[Problem] To provide a catalyst-loaded carbon having a high initial activity and excellent durability. [Solution]A catalyst-loaded carbon including catalyst particles and a carbon support, the catalyst particles being loaded on the carbon support. The carbon support has a crystallite size of 3.5 nm or greater and 9 nm or less, a BET specific surface area of 300 m2/g or greater and 450 m2/g or less, and a pore size of 5.0 nm or greater and 20.0 nm or less. The catalyst particles are made of platinum or a platinum alloy, have a crystallite size of 2.5 nm or greater and 5.0 nm or less and a surface area of 40 m2/g or greater and 80 m2/g or less.
The purpose of the present invention is to solve the problem of variation in electromagnetic wave absorption characteristics that occurs in an electromagnetic wave absorber that is capable of absorbing electromagnetic waves in a high-frequency band region. The problem is solved by an electromagnetic wave absorber that contains fibrous carbon in a matrix that contains at least one component selected from a rubber, a resin, and an elastomer, wherein: the electromagnetic wave absorber has a Shore A hardness of 60 or less; and the electromagnetic wave absorber satisfies, at each frequency of 77 GHz, 24 GHz, and 40 GHz, the relationships 2≤xCPr≤14, 2≤yCPr≤14, 1.5≤xCPi≤6, 1.5≤yCPi≤6, and |xCPr-yCPr|≤2, where CPr is the real part of a complex dielectric constant, CPi is the imaginary part of the complex dielectric constant, xCPr and xCPi are respectively CPr and CPi in the X direction, and yCPr and yCPi are respectively CPr and CPi in the Y direction, in any X direction and Y direction that are perpendicular to each other.
H01B 1/24 - Matériau conducteur dispersé dans un matériau organique non conducteur le matériau conducteur comportant des compositions à base de carbone-silicium, du carbone ou du silicium
3.
CYLINDER LINER AND JOINED BODY OF CYLINDER LINER AND CYLINDER BLOCK
The present invention addresses the problem of providing a cylinder liner capable of achieving both suppression of vibration of an engine and joining force. The problem is solved by a cylinder liner having a plurality of protrusions on an outer peripheral surface, wherein the outer peripheral surface of the cylinder liner has a thermally sprayed layer only on top parts of the plurality of protrusions, or the plurality of protrusions have a thermally sprayed layer on the top parts thereof and an elastic member filled between the plurality of protrusions.
The present invention addresses the problem of providing a novel cylinder liner for suppressing vibration of an engine. The problem is solved by this joined body including a cylinder block and a cylinder liner formed by being insert cast in the cylinder block, wherein the cylinder liner has a plurality of protrusions on an outer peripheral part, and has a coating made of a resin material or a rubber material between the cylinder liner and the cylinder block.
A compression ring to be used in a spark-ignition engine using hydrogen gas fuel and to be fitted to a piston ring groove of a piston installed in a cylinder, wherein T≤10 is satisfied, when an abrasion resistance test is performed with a reciprocating friction tester in a predetermined condition in order to evaluate an outer peripheral sliding surface of the compression ring, TW1 (μm) is defined as an amount of abrasion of the outer peripheral sliding surface in the test with dropping of 1 mL/hour of a bearing oil and 0.5 mL/hour of distilled water, TO1 (μm) is defined as an amount of abrasion of the outer peripheral sliding surface in the test with dropping of only 1 mL/hour of the bearing oil, and T (μm)=TW1−TO1 is defined.
In this ball shooting device, at least one rotor among a plurality of rotors has: a rotor body supported by a body of the ball shooting device via a rotary shaft member; and an outer peripheral member attached to the rotor body so as to cover an outer peripheral surface of the rotor body and formed of an elastic body. Furthermore, in at least one rotor, the outer peripheral member is attached to the rotor body so that an outer peripheral part, which is a portion covering the outer peripheral surface of the rotor body in the outer peripheral member, can be displaced with respect to the outer peripheral surface of the rotor body.
The present invention provides a stylus to be provided at the tip of a measuring probe,
wherein the stylus includes:
a stylus tip whose outer peripheral surface is brought into contact with an object to be measured; and
a stylus shaft whose one end is connected to the stylus tip;
wherein the stylus tip has a hard coating on the outer periphery thereof, and
wherein, when a protrusion of the hard coating extending locally from the outer peripheral surface and having a height of 1 μm or more is defined as a coating protrusion, a 0.10 mm×0.10 mm region of the outer peripheral surface of the stylus tip in which region the number of the coating protrusions is 5 or less, can be selected.
Provided is a piston ring that is used in an internal combustion engine that uses a hydrogen gas fuel. In the piston ring, the piston ring satisfies 0.75≤FPS in a case in which: the transverse rupture index of the piston ring in a case in which a transverse test is conducted under a predetermined condition is taken as FP1; the post-corrosion transverse rupture index of the piston ring in a case in which the transverse test is conducted after a corrosion test is conducted in which the piston ring is immersed in a 1% aqueous nitric acid solution for 30 minutes is taken as FP2; and the transverse rupture strength maintenance rate FPS of the piston ring is defined as FPS=FP2/FP1.
A cylinder includes grooving in the inner peripheral surface of the cylinder. In the cylinder, the grooving includes a honed groove and recessed grooves of which the groove widths and groove depths are more than those of the honed groove, the honed groove and the recessed grooves extend in the circumferential direction of the cylinder and include an inclination angle with respect to a direction perpendicular to the axis direction of the cylinder, and a length of 4 mm in which four or more of the recessed grooves exist in the axis direction of the cylinder in a region in which an oil ring slides in a case in which a crank angle is 50° or more and 140° or less can be selected on the inner peripheral surface of the cylinder.
Provided are a robot, an information processing system, an information processing method, and a program that are capable of estimating emotions of a plurality of care recipients and utilizing the estimation results for care planning and implementation. An information processing system 1000 comprises: a vital data acquisition unit 11 that acquires vital data and facial expression data of a care recipient; an emotion estimation unit 31 that estimates a quantified emotion of the care recipient on the basis of the vital data and the facial expression data; a care proposal generation unit 32 that generates a proposal regarding care implementation on the basis of the quantified emotion; and a display unit 51 that displays at least one of the quantified emotion and the proposal.
The present invention provides: a resin seal ring that has an abutment part and that makes it possible, in a resin valve, to prevent damage even when used at the outer periphery of the valve; and a valve device using the seal ring. In a resin valve device 1 having a cylindrical valve body 3 and a valve 2 which is accommodated in the valve body 3 so as to be axially slidable and which has a large-diameter part 5 that slides on an inner peripheral surface of the valve body 3, a seal ring 10 is mounted to the large-diameter part 5 and thereby seals an annular space between the seal ring 10 and the adjacent large-diameter part 5. The seal ring 10 is made of resin and has an abutment part 14. An axial end of an outer peripheral surface of the seal ring 10 has a chamfered part 12. When the seal ring 10 is mounted to the large-diameter part 5 in a free state, the maximum diameter of the seal ring 10 at the chamfered part 12 is greater than the inner diameter of the inner peripheral surface of the valve body 3, and the minimum diameter of the seal ring 10 at the chamfered part 12 is less than the inner diameter of the inner peripheral surface of the valve body 3.
F16J 15/18 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par presse-étoupes pour garnitures élastiques ou plastiques
F16K 3/24 - Robinets-vannes ou tiroirs, c.-à-d. dispositifs obturateurs dont l'élément de fermeture glisse le long d'un siège pour l'ouverture ou la fermeture à faces d'obturation en forme de surfaces de solides de révolution avec corps de tiroir cylindrique
12.
COMPRESSION RING, COMPRESSION RING COMBINATION, AND RING BODY
This compression ring has: a ring body for being fitted into a ring groove formed in a piston, the ring body having formed in the inner circumferential surface thereof an inner circumferential groove that is recessed toward the radially outer circumferential side; and a coil expander that is disposed to the radially inner circumferential side of the ring body in the ring groove, and abuts the inner circumferential groove of the ring body, and spring-urges the ring body toward the radially outer circumferential side. The ring body is made of steel. Additionally, a value (d1/a1) obtained by dividing the nominal diameter (d1) of the compression ring by the radial thickness (a1) of the ring body is 57.0 or less.
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
Provided is a braid of a carbon nanotube (CNT) core yarn excellent in tensile strength and scratch resistance. This braid is obtained by winding a plurality of monofilament or multifilament sheath yarns on a core yarn containing a CNT yarn composed of CNTs. A cord angle formed by the core yarn and the sheath yarn is 3 degrees-15 degrees inclusive.
This connection structure comprises a conductive connection member in which at least one of both axial end parts has a sleeve shape, and a seal structure that is disposed inside the connection member. The connection member includes a first connection part that is formed at one end side and is connectable to a first conductive member, a second connection part that is formed at the other end side and is connectable to a second conductive member, and a separation part which is formed between the first connection part and the second connection part and separates the first conductive member and the second conductive member inside the connection member. The seal structure is disposed in the separation part whereby the inside of the connection member is sealed.
An outer circumferential surface of a piston ring has a cut surface forming a notched portion between an outer circumferential end surface and a lower surface, the cut surface including a first surface between the outer circumferential end surface and a bottom portion, and a second surface between the bottom portion and the lower surface. The second surface is inclined away from a central axis of the piston ring as it extends toward a crank chamber side, an angle of inclination of the second surface with respect to the bottom portion being greater than or equal to 50° and less than or equal to 85°. When an axial width of the piston ring is h1 and a distance in an axial direction between a connecting portion between the cut surface and the outer circumferential end surface and a connecting portion between the cut surface and the lower surface is H, H/h1 is greater than or equal to 0.2 and less than or equal to 0.4.
A piston unit adapted to reciprocate in a cylinder includes a piston and a top land member attached to the piston. The piston includes a first portion including a piston end at one end surface side and fitted with the top land member. The first portion has a smaller outer diameter than a second portion such that there is a step therebetween. The second portion is the other portion of the piston than the first portion. The top land member has a groove wall forming surface opposed to a step surface that connects the outer circumferential surface of the first portion and the outer circumferential surface of the second portion. The first ring groove is defined by the groove wall forming surface, the step surface, and the outer circumferential surface of the first portion.
Provided are: an electromagnetic wave absorber including fibrous carbon; and an electromagnetic wave shielding composite including: the electromagnetic wave absorber; and an electromagnetic wave reflection layer formed on one surface side of the electromagnetic wave absorber. The electromagnetic wave absorber has a complex permittivity with a real part of from 6 to 30 and an imaginary part of from 1 to 25 at a frequency of 24 GHz. When the electromagnetic wave absorber is cut, the number of fiber bundles of the fibrous carbon observed on a cut surface of the electromagnetic wave absorber, the fiber bundles each having a maximum diameter of 100 nm or more, is 10 or less per 10 μm×10 μm.
[Problem]To provide an insert member for a rotary electric machine, the insert member being capable of improving the strength of joint with a motor case. [Solution] A plurality of protrusion parts are formed on the outer circumferential surface of a substantially cylindrical insert member. In a cross section obtained by cutting the insert member, when a line segment having a predetermined axial length parallel to the inner circumferential surface of the insert member is overlapped with the cross section, a substantial part region in which the protrusion parts overlap with the line segment on the line segment and a non-substantial part region in which the protrusion parts do not overlap with the line segment on the line segment are defined. When a value indicating the ratio of the substantial part region is defined as a substantial part ratio on the line segment, a chart in which the values of the plurality of substantial part ratios are plotted in order is taken as a substantial part summary chart. In an average substantial part summary chart obtained from a plurality of cross sections, when a position where an average substantial part ratio is 0 is defined as a chart end and a position where the average substantial part ratio exceeds 0.98 for the first time is defined as a chart base, the average maximum height of the protrusion, which is the distance from the chart end to the chart base, is 0.08% or more of the outer diameter of the insert member.
[Problem] To provide an insert member, the thermal conductivity of which can be satisfactorily controlled. [Solution] Provided is a substantially cylindrical insert member to be cast in an aluminum alloy motor case of a rotary electric machine. A plurality of protrusions and recesses are formed on the outer circumferential surface of the insert member. When a line along the contour of the outer circumferential surface including the contour of the plurality of protrusions and recesses is defined as a contour line in the range of a predetermined axial length in a cross-section appearing when the insert member is cut into two parts along the axial direction by a virtual plane including the central axis of the insert member, the outer circumferential surface length ratio, which is a value obtained by dividing the length of the contour line by the predetermined axial length, is 1.15 or more.
This stylus is provided at a tip of a measurement probe, the stylus comprising: a stylus tip that makes contact, on an outer peripheral surface thereof, with an object being measured; and a stylus shaft one end of which is connected to the stylus tip. The stylus tip has a hard coating on the outer periphery thereof, and a 0.10 mm × 0.10 mm area having five or fewer coating protrusions is selectable from the outer peripheral surface of the stylus tip, where the coating protrusions are defined as protrusions of the hard coating that locally protrude from the outer peripheral surface and have a height of 1 μm or more.
A land space, which is a groove-shaped space surrounded by a pair of land parts and a web part is formed on an outer peripheral part of a body ring of an oil ring. The outer peripheral surface of the body ring includes a pair of first groove wall surfaces that are provided on both sides of the bottom surface of the land space in the axial direction, connected to the bottom surface, and formed so as to increase in diameter as the first groove wall surfaces separate from the bottom surface in the axial direction. In a cross section that includes a window hole and that is orthogonal to the circumferential length direction, when an upper-side first groove wall surface, which of the pair of first groove wall surfaces is the one provided on the combustion chamber side of an internal combustion engine, forms an angle θ1 with the radial direction of the body ring, θ1 is equal to or less than 60°.
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
23.
Drip prevention device for pressurized pouring furnace
A drip prevention device for a pressurized pouring furnace according to the present disclosure is a device 10 that prevents dripping of molten metal from a molten metal outlet of the pressurized pouring furnace The drip prevention device 10 includes: a stopper 20 that brings a lower end thereof into contact with the outlet so as to block the outlet, and is provided so as to be able to rotate about a central axis 20C of the stopper with no rotation angle limitation and move vertically above the outlet; a rotation motor 30 that rotates the stopper 20; a drip detection device 60 that detects dripping of molten metal from the outlet in a case where the dripping occurs; and a control device 70 that, in a case where a drip detection signal is received from the drip detection device 60, drives the rotation motor 30 to cause the stopper 20 to perform a predetermined rotation operation.
This electrode (1) for capacitors comprises a collector (11) and an active material layer (12) that is formed on the collector (11). The active material layer (12) contains an active material, a binder and carbon nanotubes. The content of the carbon nanotubes in the active material layer (12) is 0.03 to 0.50% by mass. In addition, the volume-based median diameter of the carbon nanotubes in a dispersion liquid, which is obtained by dispersing the carbon nanotubes in water, is 3.0 µm or more.
An outer peripheral surface of a piston ring has a cut surface provided to form a cutout portion between an outer peripheral end portion and a lower surface, the cut surface includes a curved concave surface, an inclination angle of a tangent of the curved concave surface at a point closest to the combustion chamber side on the curved concave surface, with respect to a first virtual line extending in parallel to the lower surface is equal to or greater than 5° and equal to or less than 50°, and in a case where an axial direction width of the piston ring is set as h1, and an axial direction width of the cut surface is set as H, H/h1 is equal to or greater than 0.2 and equal to or less than 0.4.
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
26.
Piston ring combination, and internal combustion engine
A combination of piston rings assembled to a piston of an internal combustion engine includes four compression rings. An outer peripheral surface of a first compression ring includes a barrel surface, an outer peripheral surface of a second compression ring includes an outer peripheral end portion and a taper surface, an outer peripheral surface of a third compression ring includes an outer peripheral end portion and a taper surface, and an outer peripheral surface of a fourth compression ring includes an outer peripheral end portion and a taper surface.
[Problem] To provide a catalyst-loaded carbon which has both high initial activity and excellent durability. [Solution] This catalyst-loaded carbon is obtained by loading a carbon carrier that has a crystallite size of 3.5 nm to 9 nm, a BET specific surface area of 300 m2/g to 450 m2/g and a pore diameter of 5.0 nm to 20.0 nm with catalyst particles that are formed of platinum or a platinum alloy, the catalyst particles having a crystallite size of 2.5 nm to 5.0 nm and a catalyst surface area of 40 m2/g to 80 m2/g.
The objective of the present invention is to supply sufficient electricity to a vehicle that has run out of charge, while using a compact electricity generator. An electricity supply control device (1) installed in an engine-driven moving body capable of supplying electricity to a drive battery of an electric automobile comprises: an electricity generator (14) which is driven by an engine (11) to generate electricity; a clutch (15) capable of engaging and disengaging a motive power transmission path between the engine (11) and the electricity generator (14); an electricity supply unit for supplying electric power generated by the electricity generator (14) to a drive battery (3); an electricity supply start determining unit for determining that the supply of electricity from the electricity supply unit to the drive battery (3) has started; an engine control unit (18) for disengaging the clutch (15) to increase the rotational speed of the engine (11) when it has been determined by the electricity supply start determining unit that the supply of electricity has started; and a clutch control unit (19) for gradually engaging the clutch (15) while allowing the same to slip, if the rotational speed of the engine 11 has risen above a clutch engagement permitted value by means of the engine control unit (18).
B60W 20/13 - Commande de l'apport de puissance de chacun des moteurs primaires pour répondre à la demande de puissance requise afin de rester dans des limites de puissance d'entrée ou sortie de la batterieCommande de l'apport de puissance de chacun des moteurs primaires pour répondre à la demande de puissance requise afin d'éviter la surcharge ou la décharge excessive de la batterie
B60K 5/00 - Agencement ou montage des ensembles de propulsion à combustion interne ou à réaction
B60K 6/46 - Agencement ou montage de plusieurs moteurs primaires différents pour une propulsion réciproque ou commune, p. ex. systèmes de propulsion hybrides comportant des moteurs électriques et des moteurs à combustion interne les moteurs primaires étant constitués de moteurs électriques et de moteurs à combustion interne, p. ex. des VEH caractérisés par l'architecture du véhicule électrique hybride du type série
B60W 10/02 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande d'accouplements de la chaîne cinématique
B62J 45/00 - Agencements de matériel électrique spécialement adapté pour être utilisé comme accessoire sur cycles, non prévus ailleurs
H02P 9/04 - Commande s'exerçant sur un moteur primaire non électrique et dépendant de la valeur d'une caractéristique électrique à la sortie de la génératrice
H02P 101/25 - Adaptation particulière des dispositions pour la commande de génératrices pour moteurs à combustion
H02P 101/45 - Adaptation particulière des dispositions pour la commande de génératrices pour véhicules automobiles, p. ex. alternateurs
The present invention solves a novel problem of corrosive wear that occurs in the use of a valve seat in an internal combustion engine using a hydrogen gas fuel. The problem is solved by an iron-based sintered alloy valve seat used in an internal combustion engine using a hydrogen gas fuel, in which the Cr content is 6% by mass to 23% by mass, the Mo content is 5% by mass to 20% by mass, the Cu content is 10% by mass to 23% by mass, the Co content is 3% by mass or more, and a total content of Cr, Mo, and Co is 14% by mass to 47% by mass.
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
B22F 3/16 - Compactage et frittage par des opérations successives ou répétées
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
F01L 3/02 - Emploi de matériaux spécifiques pour corps de soupapes ou leurs siègesCorps de soupapes ou sièges de soupapes composés de plusieurs matériaux différents
The purpose of the present invention is to solve the new problem of corrosive wear occurring in the case where a valve sheet is used in an internal combustion engine utilizing a hydrogen gas fuel. The problem is solved by an iron-based sintered alloy valve sheet intended to be used in an internal combustion engine utilizing a hydrogen gas fuel, the sintered alloy valve sheet having a Cr content of 6% by mass to 23% by mass inclusive, a Mo content of 5% by mass to 20% by mass inclusive, a Cu content of 10% by mass to 23% by mass inclusive and a Co content of 3% by mass or more, in which the total content of Cr, Mo and Co is 14% by mass to 47% by mass inclusive.
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
F01L 3/02 - Emploi de matériaux spécifiques pour corps de soupapes ou leurs siègesCorps de soupapes ou sièges de soupapes composés de plusieurs matériaux différents
An oil control ring comprises: an oil ring having a pair of land parts arranged in a sliding direction and connected to each other by a web part; and a coil expander that biases the oil ring toward the outer circumferential side in the radial direction. The web part of the oil ring is provided with a plurality of window holes. In the axial cross-sectional view of the largest opening portion of the window hole in the axial direction of the oil ring, a width H1 in the sliding direction of the oil ring and a length L1 of a combustion chamber-side non-window hole part, which excludes the window hole, in the outer circumferential surface of the web part, satisfy the condition of 0.15>L1/H1≥0.
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
This piston ring is used in an internal combustion engine that uses a hydrogen gas fuel. The piston ring satisfies 0.75 ≤ FPS, when: the flexural index of the piston ring found when same is subjected to a flexural test under a prescribed condition is noted as FP1; the post-corrosion flexural index of the piston ring found when same is subjected to the flexural test after a corrosion test is performed in which the piston ring is immersed in a 1% nitric acid aqueous solution for 30 minutes is noted as FP2; and the flexural strength sustained ratio FPS of the piston ring is defined as FPS = FP2/FP1.
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
An outer peripheral surface of a compression ring includes a barrel curved surface, in a case where a width of the outer peripheral surface in an axial direction of the compression ring is set as L1, a condition of 0.2 mm≤½×L1 is satisfied, and in a case where a distance in a radial direction of the compression ring between an outer peripheral peak and each of two points on the barrel curved surface separate from the outer peripheral peak by 0.1 mm in the axial direction of the compression ring is set as d1, and a distance in the radial direction of the compression ring between the outer peripheral peak and each of two points on the barrel curved surface separate from the outer peripheral peak by ¼×L1 in the axial direction of the compression ring is set as d2, a condition of d1
This compression ring is for use in a spark-ignition engine using a hydrogen gas fuel, and is to be assembled into a piston ring groove of a piston mounted to a cylinder. In an abrasion resistance test that is conducted in order to evaluate an outer circumferential sliding surface of the compression ring and under prescribed conditions using a reciprocating sliding friction tester, in a case where TW1 (μm) represents the amount of friction on the outer circumferential sliding surface when the test is conducted by dripping bearing oil and distilled water at the rate of 1 mL/hr and 0.5 mL/hr, respectively, TO1 (μm) represents the amount of friction on the outer circumferential sliding surface when the test is conducted by dripping only the bearing oil at the rate of 1 mL/hr, and T(μm)=TW1-TO1 is satisfied, the compression ring satisfies T≤10.
A mold used for centrifugal casting includes a mold body formed in a cylindrical shape and a lid member (40) that is detachably assembled to an end part of the mold body in an axial direction. The lid member includes a lid body (41) that is attached to an opening part formed at the end part of the mold body, a protrusion part (450) that is fitted to the mold body, and a spring that applies elastic force to the lid body in a direction in which the lid body closely contacts the mold body.
B22D 13/10 - Accessoires pour machines à couler par centrifugation, p. ex. moules, leur garnissageMoyens pour l'alimentation en métal liquide, pour le nettoyage des moules ou pour l'extraction des pièces
B22D 13/12 - Commande, surveillance, spécialement adaptées à la coulée centrifuge, p. ex. pour des raisons de sécurité
36.
Thermoelectric conversion module and structure for thermoelectric conversion element
A thermoelectric conversion module includes a base material having heat insulation properties and carbon nanotube yarn that is helically wound around the base material, P-type parts and N-type parts are alternately arranged and are series-connected in an extension direction of the carbon nanotube yarn, one side part of a helix formed by the carbon nanotube yarn is formed as a heat reception part, and the other side part across the base material from the one side part is formed as a heat dissipation part, lengths of the P-type parts and lengths of the N-type parts are shorter than a length of a one-turn portion of the helix, and the P-type parts and the N-type parts are arranged such that respective one end parts are included in the heat reception part and respective other end parts are included in the heat dissipation part.
H10N 10/855 - Matériaux actifs thermoélectriques comprenant des compositions inorganiques comprenant des composés contenant du bore, du carbone, de l'oxygène ou de l'azote
H10N 10/17 - Dispositifs thermoélectriques comportant une jonction de matériaux différents, c.-à-d. dispositifs présentant l'effet Seebeck ou l'effet Peltier fonctionnant exclusivement par les effets Peltier ou Seebeck caractérisés par la structure ou la configuration de la cellule ou du thermocouple constituant le dispositif
The present invention addresses the problem of providing a CrN coating film which has excellent peeling resistance such that peeling thereof starting at a crack is unlikely to occur even in a more severe lubrication environment. The problem is solved by a CrN coating film which has a preferred orientation of 200 as determined by XRD, and in which the X-ray diffraction intensity ratio of the (200) plane with respect to the (111) plane, (200)/(111), is 5.5 or higher, and the ratio of crystal grains of 1 μm or smaller is 85% or higher in a crystal grain size distribution measured by an EBSD analysis.
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 14/32 - Évaporation sous vide par explosionÉvaporation sous vide par évaporation suivie d'une ionisation des vapeurs
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
A retaining unit that retains a stack body in which piston rings are stacked in an axial direction, a cutting-out unit that delivers a piston ring at the tip end of the stack body from the stack body, and a detecting unit that detects a boundary between the piston rings that are adjacent to each other in the stack body are included, and the cutting-out unit includes a moving unit that moves a pushing-out unit and a restricting unit, and after inserting the pushing-out unit and the restricting unit into a dividing portion that is a boundary between the piston ring at the tip end and a piston ring that is adjacent to the piston ring at the tip end in the stack body, in a state in which movement of the piston ring that is adjacent to the piston ring at the tip end in a delivering direction in which the piston ring at the tip end is delivered is restricted by the restricting unit, the moving unit moves the pushing-out unit in the delivering direction, so that the piston ring at the tip end is separated from the stack body, and the piston ring at the tip end is delivered along the retaining unit.
B23P 19/08 - Machines pour placer des rondelles, bagues annulaires élastiques ou éléments analogues sur des boulons ou autres éléments
B25B 27/12 - Outils à main ou outillage d'établi, spécialement conçus pour assembler ou séparer des pièces ou des objets, que cela entraîne ou non une certaine déformation, non prévus ailleurs pour assembler des objets par ajustage à la presse, ou pour les détacher pour monter ou démonter des segments de piston
3 bonding is observed in the DLC coating in addition to a G band derived from the graphite structure and a D band derived from the defects of the graphite structure, and these bands satisfy specific relationships.
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 14/32 - Évaporation sous vide par explosionÉvaporation sous vide par évaporation suivie d'une ionisation des vapeurs
An object of the present invention is to provide a sliding member coated with a DLC coating in which microfractures on the sliding surface thereof due to the progression of cracks are less likely to occur, and in which an increase in abrasive wear can be reduced. The present invention achieves the above-mentioned object by a sliding member having, on the outer peripheral sliding surface thereof, a DLC coating in which the amount of plastic deformation work as measured by a nanoindentation test is within a specific range.
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
A casting system (10) includes a plurality of mold tables (41 and 42), molten metal pouring trucks (21 and 22), and a molten metal supply furnace (30). The mold tables are each provided with centrifugal casting molds (81 to 84 and 91 to 94). Each molten metal pouring truck can move to the position of each mold table and pour molten metal into the molds installed on the mold table. The molten metal supply furnace supplies molten metal to the molten metal pouring trucks.
B22D 13/10 - Accessoires pour machines à couler par centrifugation, p. ex. moules, leur garnissageMoyens pour l'alimentation en métal liquide, pour le nettoyage des moules ou pour l'extraction des pièces
B22D 13/12 - Commande, surveillance, spécialement adaptées à la coulée centrifuge, p. ex. pour des raisons de sécurité
42.
ELECTROMAGNETIC WAVE ABSORBER AND ELECTROMAGNETIC WAVE SHIELDING COMPOSITE
Provided are: an electromagnetic wave absorber which contains fibrous carbon, has a complex permittivity having a real part value of 6 to 30 and an imaginary part value of 1 to 25 at a frequency of 24 GHz, and is made from fiber bundles of the fibrous carbon observed in a cross-section of the electromagnetic wave absorber when the electromagnetic wave absorber is cut, wherein the number of fiber bundles having a maximum diameter of 100 nm or greater is 10 or less per 10 µm x 10 µm; and an electromagnetic wave shielding composite which has the electromagnetic wave absorber and an electromagnetic wave reflection layer disposed on one surface side of the electromagnetic wave absorber.
A device according to the present disclosure is a workpiece retaining device 10 that retains a retained portion 110 of an axial-directional end portion of a workpiece 100 that is cylindrical. The workpiece retaining device 10 includes a core member 32 that is round and that comes into contact an inner perimeter face of the retained portion 110 of the workpiece 100, a pressing member 33 that presses an outer perimeter face of the retained portion 110 of the workpiece 100 to an inner side in a radial direction, and an aligning member 44 that, upon a pressing force from the pressing member 33 acting thereupon, allows the core member 32 to move in the radial direction, in accordance with a magnitude and a direction of the pressing force.
5), and a control device (60). The radiation thermometers detect pre-cooling temperatures that are temperatures at a plurality of places on the mold before cooling water is sprayed from the plurality of nozzle parts to the mold. The control device individually sets a cooling time to each of the plurality of places on the mold based on a deviation between the pre-cooling temperature at the place on the mold and a target temperature and controls the electromagnetic valves based on the cooling times individually set to the plurality of respective places on the mold.
B22D 13/10 - Accessoires pour machines à couler par centrifugation, p. ex. moules, leur garnissageMoyens pour l'alimentation en métal liquide, pour le nettoyage des moules ou pour l'extraction des pièces
B22D 13/12 - Commande, surveillance, spécialement adaptées à la coulée centrifuge, p. ex. pour des raisons de sécurité
45.
Combination of piston rings, and combination structure of piston and piston rings
A combination of piston rings assembled to a piston includes a first compression ring, a second compression ring, a third compression ring and an oil ring. When an axial width of the first compression ring is h1(1), an axial width of the second compression ring is h1(2), an axial width of the third compression ring is h1(3) and an axial width of the oil ring is h1(4), h1(1)≥h1(2) and h1(1)≥h1(3), and when h1(TOTAL)=h1(1)+h1(2)+h1(3)+h1(4), h1(TOTAL)≥3.1 mm.
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
46.
PISTON UNIT, TOP LAND MEMBER, AND COMBINATION OF PISTON UNIT PARTS
This piston unit, which reciprocates in a cylinder, comprises a piston and a top land member mounted to the piston. The piston has a first portion that includes an end part of a side of one end face of the piston and on which the top land member is mounted. The first portion has a smaller outer diameter than a second portion of the piston excluding the first portion such that a step is formed between the first portion and the second portion. The top land member has a groove wall-forming surface opposing a step surface connecting the outer circumferential surface of the first portion and the outer circumferential surface of the second portion, and a first ring groove is demarcated by the groove wall-forming surface, the step surface, and the outer circumferential surface of the first portion.
The present invention makes it possible to improve recyclability, achieve a reduction in weight, and improve environmental friendliness. To this end, a cylinder liner (30) according to the present disclosure is provided only to a part of a region of an inner surface (21i) of a cylinder (21) in a reciprocating engine, said region being where a piston ring (50) fitted to a piston (40) that reciprocates in the cylinder (21) slides. The total length L of the liner along the axial direction of the cylinder (21) is less than the inner diameter B of the cylinder. One lower end part (30d), which is toward the bottom dead center side of the piston ring (50) in the axial direction, has protrusions and recesses formed therein.
A combination of piston rings assembled to a piston includes a first compression ring, a second compression ring, a third compression ring and an oil ring. When an axial width of the first compression ring is h1(1), an axial width of the second compression ring is h1(2), an axial width of the third compression ring is h1(3) and an axial width of the oil ring is h1(4), h1(1)≥h1(2) and h1(1)≥h1(3), and when h1(TOTAL)=h1(1)+h1(2)+h1(3)+h1(4), h1(TOTAL)≥3.9 mm.
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
The outer peripheral surface of this piston ring has a cut surface that is provided so as to form a cutout between the outer peripheral end and the lower surface. The cut surface includes a curved concave surface. The angle of inclination of the tangent line of the curved concave surface at the point closest to the combustion chamber on the curved concave surface with respect to a first imaginary line extending parallel to the lower surface falls within the range of 5-50°. H/h1 falls within the range of 0.2-0.4, where h1 is defined as the axial width of the piston ring and H is defined as the axial width of the cut surface.
The outer peripheral surface of this piston ring has a cut surface that forms a cutout between the outer peripheral end and the lower surface. The cut surface includes a first surface provided between the outer peripheral end surface and the bottom, and a second surface provided between the bottom and the lower surface. The second surface is inclined away from the center axis of the piston ring with approach towards a crank chamber, and the inclination angle of the second surface with respect to the lower surface falls within the range of 50-85°. H/h1 falls within the range of 0.2-0.4, where h1 is defined as the axial width of the piston ring and H is defined as the distance in the axial direction between the connection portion between the cut surface and the outer peripheral end surface and the connection portion between the cut surface and the lower surface.
Provided is a cylinder liner which can reduce the friction of the sliding surface from conventional levels and improve fuel efficiency without increasing oil consumption from conventional levels.
When the inner circumferential surface of a cylinder liner or cylinder bore used in an internal combustion engine has a first sliding region, a second sliding region, and a third sliding region, and when respective surface roughness Rvk is from 0.05 μm to 0.3 μm, from 0.4 μm to 1.5 μm, and from 0.15 μm to 0.7 μm, a friction can be reduced while maintaining oil consumption.
The present invention addresses the problem of providing a sintered alloy valve guide capable of inhibiting valve adhesion even in a high-temperature environment. The problem can be solved by a sintered alloy valve guide impregnated with a lubricating oil including pores that are sealed on the valve guide outer circumferential surface. More particularly, the problem is solved by the sealing step of performing a sealing treatment of pores on the outer circumferential surface of a sintered body impregnated with a lubricating oil.
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
B22F 7/00 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage
B22F 3/16 - Compactage et frittage par des opérations successives ou répétées
B22F 3/24 - Traitement ultérieur des pièces ou objets
Provided is a cylinder having grooving in a cylinder inner circumferential surface. The grooving includes a honed groove and a recessed groove having a larger groove width and a larger groove depth than the honed groove. The honed groove and the recessed groove extend in a cylinder circumferential direction and have an inclination angle in relation to a direction perpendicular to the cylinder axial direction. In a sliding region of an oil ring when a crank angle is from 50º to 140º, the cylinder inner circumferential surface is such that, in the cylinder axial direction, a length of 4 mm in which the recessed groove is present in four or more places can be selected.
A piston ring combination for mounting to a piston in an internal combustion engine is provided which comprises four compression rings. An outer peripheral surface of a first compression ring includes a barrel face, an outer peripheral surface of a second compression ring includes an outer peripheral end portion and a tapered face, an outer peripheral surface of a third compression ring includes an outer peripheral end portion and a tapered face, and an outer peripheral surface of a fourth compression ring includes an outer peripheral end portion and a tapered face.
The present invention addresses the problem of providing a sliding member covered with a DLC coating with which microfractures in a sliding surface due to development of cracks are less likely to occur, and an increase in abrasive wear can be suppressed. The problem is solved by a sliding member having on an outer peripheral sliding surface a DLC coating, wherein the amount of work of plastic deformation which is measured by a nanoindentation test is within a specific range.
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
G01N 3/00 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique
G01N 3/42 - Recherche de la dureté ou de la dureté au rebondissement en effectuant des empreintes sous une charge permanente par des dispositifs de pénétration, p. ex. sphère, pyramide
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
The present invention addresses the problem of providing a sliding member that is covered by a DLC coating, is less likely to have micro-fractures on the sliding surface that have been caused by the progression of cracks, and is able to suppress increases in abrasive wear. This problem is solved by means of a sliding member having a DLC coating on the outer peripheral surface thereof. In the DLC coating, an S-band derived from an sp3 bond is measured in addition to a G-band derived from a graphite structure and a D-band derived from defects in the graphite structure, and these bands satisfy a specific relationship.
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
An oil ring according to the present invention includes: a pair of segments that are formed following a perimeter direction of the oil ring and that are provided arrayed in the axial direction of the oil ring, independent from each other, with an annular wire rod as a base material of each; and a space expander that is disposed between the pair of segments. Of the pair of segments, the base material of an upper-side segment that is situated on a combustion chamber side in an internal combustion engine has higher wear resistance than the base material of a lower-side segment of the pair of segments that is situated on a crank chamber side in the internal combustion engine.
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
This oil ring comprises a pair of segments that are annularly formed so as to follow the circumferential direction of the oil ring and that are arranged independently of each other in the axial direction of the oil ring, and a spacer expander disposed between the pair of segments. A surface treatment film is formed, on at least part of at least one of at least one axial end surface of at least one of the pair of segments, such that the surface colors of the pair of segments are different from each other.
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
59.
COMBINATION OF PISTON RINGS AND COMBINED STRUCTURE OF PISTON AND PISTON RINGS
The combination of piston rings assembled to a piston comprises a first compression ring, a second compression ring, a third compression ring, and an oil ring. When the first compression ring has an axial width of h1(1), the second compression ring has an axial width of h1(2), the third compression ring has an axial width of h1(3), and the oil ring has an axial width of h1(4), h1(1)≥h1(2) and h1(1)≥h1(3) are established. When h1(TOTAL)=h1(1)+h1(2)+h1(3)+h1(4), h1(TOTAL)≥3.1 mm is established.
This combination of piston rings assembled on pistons includes a 1st compression ring, a 2nd compression ring, a 3rd compression ring, and an oil ring. Letting h1(1) be the axial width of the first compression ring, h1(2) be the axial width of the second compression ring, h1(3) be the axial width of the third compression ring, and h1(4) be the axial width of the oil ring, h1(1) ≥ h1(2) and h1(1) ≥ h1(3), and when h1(TOTAL) = h1(1)+h1(2)+h1(3)+h1(4), h1(TOTAL) ≥ 3.9 mm.
F16J 9/00 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
F16J 9/12 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général Détails
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
The present invention addresses the problem of providing a cylinder liner or a cylinder bore, which can reduce not only friction on a sliding surface but also oil consumption. In a piston sliding direction of the cylinder bore, grooves of a second sliding region positioned on the side of crankcase have a higher groove area ratio at a depth of 0.3 μm than grooves of a first sliding region positioned on the side of combustion chamber, and the groove area ratio is in a specific range, whereby friction and oil consumption can be reduced.
The present invention addresses the problem of providing a sintered alloy valve guide with which valve adhesion can be prevented even in a high-temperature environment. This problem is resolved by means of a sintered alloy valve guide in which holes in an outer peripheral surface of the valve guide that are impregnated with lubricating oil are sealed. More specifically, the problem is resolved by means of a seal processing step of performing seal processing of holes in an outer peripheral surface of a sintered body that are impregnated with lubricating oil.
This space expander comprises: an expander body that is annularly formed along the circumferential direction of an oil ring and that urges a pair of segments outward in the radial direction of the oil ring, the expander body including a pair of abutment ends that form an abutment by facing each other and, and the expander body being formed in a wavy shape that is continuous in the circumferential direction when viewed in the radial direction of the oil ring; an expander groove formed in the expander body so as to span between the abutments and extend along the circumferential direction of the oil ring; and a linear member including a fitting part formed in an arc along the circumferential direction of the oil ring, the fitting part being fitted into the expander groove so as to span between the abutments.
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
This oil control ring comprises: an oil ring in which a pair of land sections disposed along the sliding direction are coupled by a web section; and a coil expander that forces the oil ring radially toward the outer periphery. In the web section of the oil ring, a plurality of window apertures are formed. In a cross-section along the axial direction of the window-aperture maximum opening along the axis of the oil ring, the width H1 of the oil ring along the sliding direction and the length L1 of a non-window-aperture section excluding the window apertures at the combustion chamber side of the web-section outer peripheral surface satisfy the relation 0.15 > L1 / H1 ≥ 0.
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
65.
PISTON AND PISTON RING COMBINATION STRUCTURE AND PARTITION RING
According to the present invention, a piston and piston ring combination structure comprises a ring groove that is provided in an outer circumferential surface of a piston and is for installing a piston ring, one or more piston rings that are installed in the ring groove, and a partition ring that is installed in the ring groove so as to be aligned with the one or more piston rings in the axial direction of the piston. The partition ring is fitted onto a bottom groove wall surface that is a bottom surface of the ring groove so as to be at a prescribed interval from an inner wall of a cylinder.
This dripping prevention device for pressurized pouring furnace is a device 10 for preventing dripping of hot water from the hot water outlet of a pressurized pouring furnace. Said dripping prevention device 10 is provided with: a stopper 20, the bottom end of which contacts the outlet to close said outlet, and which is provided so as to be capable of rising and lowering above the outlet and so as to be capable rotating about the center axis 20C of said stopper without restriction on the rotation angle; a rotation motor 30 which rotates said stopper 20; a dripping detection device 60 which detects dripping when hot water drips from the outlet; and a control device 70 which, in the case that a dripping detection signal has been received from the dripping detection device 60, drives the rotation motor 30 and causes the stopper 20 to perform a prescribed rotation action.
155), and a control device (60). The radiation temperature meters respectively detect, at a plurality of parts of a mold, pre-cooling temperatures which are the temperatures before the plurality of nozzle parts spray the mold with cooling water. On the basis of the deviations between the respective pre-cooling temperatures of the plurality of parts of the mold and corresponding target temperatures, the control device individually sets cooling times for the plurality of parts of the mold. The control device controls the electromagnetic valves on the basis of the respective cooling times which are individually set for the plurality of parts of the mold.
B22D 13/10 - Accessoires pour machines à couler par centrifugation, p. ex. moules, leur garnissageMoyens pour l'alimentation en métal liquide, pour le nettoyage des moules ou pour l'extraction des pièces
The present invention addresses the problem of providing a sliding coating film which is capable of suppressing separation phenomenon that is different from detrition due to sliding. The problem is solved by a sliding coating film which is a multilayer film that is obtained by sequentially superposing an adhesive layer, a first carbon layer and a second carbon layer in this order on a metal-based substrate that constitutes a sliding member, wherein: a peak is present between the loss energy of 280 eV and the loss energy of 290 eV in the electron energy loss near edge structures (C-K loss edge ELNES) of the first carbon layer and the second carbon layer as determined by TEM-EELS; and the peak height of the first carbon layer is higher than the peak height of the second carbon layer.
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
The present invention comprises a holding part that holds a stacked body in which piston rings have been stacked in the axial direction, a cutting-off part that delivers the tip-end piston ring from the stacked body, and a detection unit that detects the boundaries between adjacent piston rings in the stacked body, wherein: the cutting-off part has a movement part that moves a push-out part and a restriction part; and the movement part inserts the push-out part and the restriction part into a separation site that is the boundary between the piston ring at the tip end of the stacked body and the piston ring adjacent to the tip-end piston ring and then, in a state in which the restriction part restricts the piston ring adjacent to the tip end piston ring from moving in the delivery direction in which the tip-end piston ring is to be delivered, moves the push-out part in the delivery direction, whereby the tip-end piston ring is separated from the stacked body and is delivered along the holding part.
B23P 19/00 - Machines effectuant simplement l'assemblage ou la séparation de pièces ou d'objets métalliques entre eux ou des pièces métalliques avec des pièces non métalliques, que cela entraîne ou non une certaine déformationOutils ou dispositifs à cet effet dans la mesure où ils ne sont pas prévus dans d'autres classes
B23P 19/02 - Machines effectuant simplement l'assemblage ou la séparation de pièces ou d'objets métalliques entre eux ou des pièces métalliques avec des pièces non métalliques, que cela entraîne ou non une certaine déformationOutils ou dispositifs à cet effet dans la mesure où ils ne sont pas prévus dans d'autres classes pour le montage d'objets à la presse, ou pour le démontage de ces objets
B23P 21/00 - Machines pour l'assemblage de nombreuses pièces différentes destinées à composer des ensembles, avec ou sans usinage de ces pièces avant ou après leur assemblage, p. ex. à commande programmée
An outer peripheral surface of this compression ring includes a barrel curved surface, wherein: if L1 is a width of the outer peripheral surface in an axial direction of the compression ring, the condition 0.2 mm<1/2×L1 is satisfied; and if d1 is a distance in the radial direction of the compression ring between an outer peripheral vertex and each of two points on the barrel curved surface separated by 0.1 mm from the outer peripheral vertex in the axial direction of the compression ring, and d2 is a distance in the radial direction of the compression ring between the outer peripheral vertex and each of two points on the barrel curved surface separated by 1/4×L1 from the outer peripheral vertex in the axial direction of the compression ring, the condition d1
A casting system (10) is provided with a plurality of mold tables (41, 42), pouring carriages (21, 22), and a pouring furnace (30). The mold tables are provided with centrifugal casting molds (81-84, 91-94). The pouring carriages can move to each position of the mold tables and pour molten metal into the molds provided on the mold tables. The pouring furnace pours molten metal into the pouring carriages.
B22D 13/10 - Accessoires pour machines à couler par centrifugation, p. ex. moules, leur garnissageMoyens pour l'alimentation en métal liquide, pour le nettoyage des moules ou pour l'extraction des pièces
Oil grooves (40) formed in at least one of surfaces of a ring-shaped member (30) each have a longitudinal direction that forms an angle falling within a range of from 40 degrees to 75 degrees with respect to a radial direction of the ring-shaped member, and are arranged at equal intervals in a circumferential direction of the ring-shaped member (30). The oil grooves (40) include communicating oil grooves (40A) and non-communicating oil grooves (40B) formed to extend to the vicinity of an outer peripheral end (34), and are arranged with periodic regularity in the circumferential direction of the ring-shaped member (30). In addition, a communicating oil groove area ratio expressed by Expression: “S1/(S1+S2)” falls within a range of from 0.15 to 0.85, where S1 represents a sum of plane areas of the communicating oil grooves (40A), S2 represents a sum of the non-communicating oil grooves (40B).
The present invention provides a mold that is used for centrifugal casting and is provided with a mold body that is formed into a cylindrical shape and a lid member (40) that is detachably attached to an end of the mold body in the axial direction. The lid member is provided with a lid body (41) that is attached to an opening formed in the end of the mold body, a protruding part (450) that is fitted to the mold body, and a spring that provides the lid body with an elastic force in a direction to make the same closely contact with the mold body.
B22D 13/10 - Accessoires pour machines à couler par centrifugation, p. ex. moules, leur garnissageMoyens pour l'alimentation en métal liquide, pour le nettoyage des moules ou pour l'extraction des pièces
The present invention addresses the problem of providing a CrN coating film which has excellent peeling resistance and is not susceptible to separation of the coating film, said separation beginning at a crack, even in a severer lubricating environment. The problem is solved by a CrN coating film which has a 200 preferred orientation as determined by XRD, wherein: the X-ray diffraction intensity ratio of the (200) plane to the (111) plane, namely (200)/(111) is 5.5 or more; and the proportion of crystal grains having a crystal grain size of 1 μm or less is 85% or more in the crystal grain size distribution as determined by EBSD analysis.
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
The device according to the present disclosure is a workpiece holding device 10 for holding a held portion 110 located at an axial-direction end section of a tubular workpiece 100. The workpiece holding device 10 comprises: a circular core member 32 that abuts an inner peripheral surface of the held portion 110 of the workpiece 100; a pressing member 33 that presses an outer peripheral surface of the held portion 110 of the workpiece 100 radially inward; and an aligning member 44 that allows the core member 32 to move in the radial direction, when a pressing force from the pressing member 33 is applied, in response to the size and direction of the pressing force.
In a surface of a wire, a first side surface forming an outer circumferential surface in a piston ring includes a tapered surface and a protruding surface, the protruding surface is divided into a first part and a second part by a first virtual surface extending from the tapered surface, and the first part includes a top and is formed in a protruding shape.
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
B23P 15/06 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe de segments de piston, en une seule pièce
Provided is a thrust washer that can reduce torque and wear, decrease the torque amplitude width, and suppress oil burns. This thrust washer is such that the longitudinal direction of oil grooves 40 provided in at least one surface of a ring-shaped member 30 forms an angle of 40-75 degrees in relation to the radial direction of the ring-shaped member. The oil grooves 40 are disposed at equal intervals in the circumferential direction of the ring-shaped member 30, include a communicating oil groove 40A and a non-communicating oil groove 40B, which is provided so as to extend to an edge of an outer circumferential end 34, and are arranged so as to have cyclic regularity in relation to the circumferential direction of the ring-shaped member 30. In addition, a communicating oil groove area ratio indicated by equation (1) below is 0.15-0.85. • Equation (1) Communicating oil groove surface area ratio = S1/(S1 + S2) [in equation (1), S1 denotes the sum total of the plane area of the respective communicating oil grooves 40A, S2 denotes the sum total of the plane area of the non-communicating oil grooves 40B, n denotes the total number of communicating oil grooves 40A, and m denotes the total number of non-communicating oil grooves 40B.]
Provided are a heat-shielding ring for a cylinder liner that is less likely to be damaged due to a groove for forming an insulation air layer, and an internal combustion engine that uses said heat-shielding ring. The present invention is a heat-shielding ring 10 for a cylinder liner and an internal combustion engine 200 that uses the heat-shielding ring 10. In the heat-shielding ring 10 for a cylinder liner, the cross-sectional shape of a groove 34 provided in an outer peripheral surface 30 of a ring-form member 20 constituting the heat-shielding ring 10 is any one or more shapes selected from the group comprising (1) a first cross-sectional shape in the form of a letter V, (2) a second cross-sectional shape in which the vicinities of the corners of the first cross-sectional shape are rounded into a curve, (3) a third cross-sectional shape formed from only an arcuate curve, and (4) a fourth cross-sectional shape in the form of a letter U.
A thrust washer is provided with a ring-shaped portion that surrounds an insertion hole, the thrust washer is provided with a sliding surface and an oil groove configured to allow lubricating oil to flow in, the oil groove is provided with an opening portion configured to allow the lubricating oil to flow in from the insertion hole side in an inner peripheral end side, an outer periphery end side of the ring-shaped portion of at least one of the oil groove is provided with an oil stop wall which is configured to suppress flow of the lubricating oil toward an outer periphery side of the ring-shaped portion, and a sliding area ratio of each of the sliding surfaces to a projection plane in plan view of the ring-shaped portion is provided within a range of from 60% to 85%
A cylinder liner of the present invention is a cylinder liner mounted on a cylinder block and formed of flaky graphite cast iron, at least a nitrided layer is provided on an inner periphery of the cylinder liner, and a cross hatching section is formed on the inner periphery, a roughness curve of the inner periphery has a plateau honing shape, a ten-point average roughness Rz of the inner periphery pursuant to JIS B0601:1982 is 4.0 μm or less, and an average value of an area ratio of pits generated in the inner periphery is 8% or less.
B24B 33/02 - Machines ou dispositifs de finissageAccessoires à cet effet pour travailler intérieurement des surfaces de révolution, p. ex. de forme cylindrique ou conique
B22D 19/08 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final pour établir des garnitures ou revêtements, p. ex. de métal antifriction
83.
SPINY LINER, METHOD FOR MANUFACTURING SAME, AND METHOD FOR DISCRIMINATING JOINING STRENGTH
The present invention addresses the problem of providing a spiny liner that can further improve joining strength when integrated with metal on an outer circumferential surface side. The spiny liner having a plurality of protrusions on the surface, including narrowed mid-section protrusions, and capable of solving the problem, wherein the total value of the following (I) and (II) for the protrusions is 1.55 or more, where Pc is the number of the narrowed mid-section protrusions per 100 mm2, h (mm) is the average height of the protrusions, and dw (mm) is the average maximum thickness and dn (mm) is the average minimum thickness of any 20 protrusions from among the narrowed mid-section protrusions. (I) = Pc × [(0.35hπ/12) × (2dw2- dw × dn - dn2)]; (II) = Pc × {(dn2/4) × π × 0.35h}
The present invention addresses the problem of providing a cylinder liner that can improve fuel efficiency by reducing the friction of a sliding surface compared to conventional levels without increasing oil consumption compared to conventional levels. In this cylinder liner or cylinder bore used for internal combustion engines, the inner circumferential surface of the cylinder liner or the cylinder bore has a first sliding region, a second sliding region, and a third sliding region which respectively have surface roughnesses Rvk of 0.05-3 μm, 0.4-1.5 μm, and 0.15-0.7 μm, and it is thus possible to reduce friction while keeping oil consumption the same.
Provided is a wire material of which a first side surface for forming an outer peripheral surface of a piston ring includes a tapered surface and a protruding surface. The protruding surface is divided into a first portion and a second portion by a first virtual surface which is an extension of the tapered surface. The first portion includes an apex part and is formed to have a projecting shape.
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
An object of the present invention is to provide a cylinder liner for insert casting that can improve the joining strength between a cylinder liner and a cylinder block by reducing voids generated between the cylinder liner and the cylinder block.
av between top portions of protrusions (mm) (1).
B22D 19/00 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final
B22D 19/08 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final pour établir des garnitures ou revêtements, p. ex. de métal antifriction
2 component ratio of 0.5 to 0.85 as determined from a TEM-EELS spectrum obtained by a combination of a transmission electron microscope (TEM) and electron energy loss spectroscopy (EELS), as well as a coating hardness of 12 GPa to 26 GPa and a Young's modulus of 250 GPa or less as measured by a nanoindentation method.
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/22 - Segments pour empêcher l'usure des gorges ou logements du même genre
F16J 9/28 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers de matériaux non métalliques
In this piston ring combination, a second outer peripheral surface, which is the outer peripheral surface of a second ring, has a second protruding surface curved into a convex shape, and a pair of third outer peripheral surfaces, which are the outer peripheral surfaces of a pair of segments, each have a third outer peripheral area in which a third protruding surface is formed, the third protruding surfaces being curved into convex shapes. In at least one of the pair of third outer peripheral surfaces, the peripheral edge on a crank-chamber side is positioned farther outward in the diametrical direction than the peripheral edge on a combustion-chamber side, and a peak of the third protruding surface is positioned nearer to the crank chamber than the center of the third outer peripheral surface.
F16J 9/20 - Segments à section spécialeSegments racleurs d'huile
F16J 9/06 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général utilisant des ressorts séparés pour dilater les segmentsRessorts à cet effet
The present invention addresses the problem of providing a cylinder liner or a cylinder bore that makes it possible to reduce friction on a sliding surface and reduce oil consumption. In a piston sliding direction of a cylinder bore, the groove part of a second sliding area positioned on a crank side has a higher groove area ratio at a depth of 0.3 μm than a groove part of a first sliding area positioned on a combustion room side and falls within a specific range to thereby make it possible to reduce friction and reduce oil consumption.
An aspect of the present invention provides a binder which makes it possible to obtain an electrode excellent in heat resistance. The binder contains: a re-emulsifiable resin powder coated with inorganic particles; and a metal-crosslinking thickening agent forming a hydrophobic gel by being crosslinked, in an aqueous system, via metal ions derived from an electrode active material.
Provided is a binder with which an electrode that has exceptional heat resistance is obtained. The binder contains: a re-emulsifiable resin powder covered with inorganic particles; and a metal cross-linking thickener that crosslinks in a water system with metal ions derived from an electrode active material, and forms a hydrophobic gel.
The present invention addresses the problem of providing a compression ring which has favorable thermal conductivity and is capable of maintaining tension in hot environments. The present invention solves this problem by providing a compression ring which is to be used by mounting to an internal combustion engine piston, and comprises a copper alloy having a thermal conductivity of 30W/m·K or higher and a tension reduction rate of 50% or less after being kept at 250°C for 3 hours.
F02F 5/00 - Segments de piston, p. ex. associés avec la tête de piston
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
This hybrid capacitor is configured so that: a positive electrode includes graphite as a positive electrode active material; a positive-electrode-side current collector is made of an aluminum material; and the aluminum material is coated by a carbon plating film in which the content ratio sp2/(sp2+ sp3) of sp2 structures is 80% or higher.
2 on the outer peripheral surface, and (ii) when two 15.2 mm×0.03 mm lines are set in parallel with a gap of 3.8 mm therebetween at an arbitrary position on the outer peripheral surface of the cylinder liner, the total number of projections that are in contact with the two lines is 8 or less.
B22D 19/08 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final pour établir des garnitures ou revêtements, p. ex. de métal antifriction
F16J 10/04 - Surfaces de contactChemises de cylindres
B22D 19/00 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final
95.
CURRENT COLLECTOR FOR POWER STORAGE DEVICE ELECTRODE, MANUFACTURING METHOD THEREOF, AND POWER STORAGE DEVICE
A current collector for a power storage device electrode that increases output and excels in output characteristics while maintaining a high energy density, a method for manufacturing the current collector for a power storage device electrode, and a power storage device having the current collector for a power storage device electrode are provided. The current collector for a power storage device electrode according to the present invention includes an aluminum material and an amorphous carbon coating film formed on the aluminum material. The ratio of sp2bonded carbons to the total amount of sp2bonded carbons and sp3bonded carbons in the amorphous carbon coating film (sp2/(sp3+ sp2)) is 0.35 or more. The ratio (sp2/(sp3+ sp2)) was measured by an X-ray absorption fine structure (XAFS) method.
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
H01M 4/587 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx pour insérer ou intercaler des métaux légers
H01G 11/28 - Électrodes caractérisées par leur structure, p. ex. multicouches, selon la porosité ou les caractéristiques de surface agencées ou disposées sur un collecteur de courantCouches ou phases entre les électrodes et les collecteurs de courant, p. ex. adhésifs
H01G 11/68 - Collecteurs de courant caractérisés par leur matériau
H01G 11/70 - Collecteurs de courant caractérisés par leur structure
H01G 11/86 - Procédés de fabrication de condensateurs hybrides ou EDL ou de leurs composants spécialement adaptés pour les électrodes
F16J 10/04 - Surfaces de contactChemises de cylindres
B22D 19/08 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final pour établir des garnitures ou revêtements, p. ex. de métal antifriction
[Problem] To provide a porous body which has a relatively uniform pore distribution and has a smaller pore size. [Solution] The present invention includes: Si as a main component; and Ge dissolved in the Si. The present invention may further include Mg. The present invention may further include Mg. The distribution peak of fine pores having a size of at most 2,000 nm is preferably 10-700 nm.
Applicability to a composite material with high purity and high strength, and a material requiring high conductivity or high thermal conductivity is enhanced. The present invention relates to a multi-walled carbon nanotube having two or more tubes of a graphene sheet where carbon atoms are arranged in a hexagonal honeycomb form, coaxially, wherein a diameter of an outermost wall based on observation of an image by a transmission electron microscope is 3 nm or more and 15 nm or less, and a length based on observation of an image of a scanning electron microscope is 1.0 mm or more, an aggregate of multi-walled carbon nanotubes and a method for preparing the multi-walled carbon nanotube.
This method for manufacturing a seal ring (10) includes: a base ring forming step of using a resin as a material to form a base ring (30) in which an abutment (47) having an overlap in at least an axial direction exists in a gas-tight manner between a one-end side engaging portion (45) on one end side in a circumferential direction and an other-end side engaging portion (46) on the other end side in the circumferential direction; a cavity arrangement step of arranging the base ring (30) in a cavity (101) of a mold (100); a tension ring setting step of setting, in a ring arrangement portion (32) of the base ring (30), a metal tension ring (60) having a gap portion (61) in a position corresponding to the one-end side engaging portion (45) and the other-end side engaging portion (46); and a sealing step of causing liquid resin to flow into the cavity (101) to enclose the tension ring (60) by forming a lid portion (50), and to form retaining portions (36), (51) for preventing the base ring (30) and the lid portion (50) from detaching from one another, between the base ring (30) and the lid portion (50).
F16J 9/26 - Segments de piston, leurs logementsSegments d'étanchéité de structure similaire en général caractérisés par l'emploi de matériaux particuliers
F16J 9/16 - Obturation des fentes de segments par empilement des segments
A novel method for producing a porous carbon material which makes it possible to easily produce a porous carbon material having a desired shape. The method includes immersing a carbon-containing material having a desired shape and composed of a compound, alloy or non-equilibrium alloy containing carbon in a metal bath, the metal bath having a solidification point that is lower than a melting point of the carbon-containing material, the metal bath being controlled to a lower temperature than a minimum value of a liquidus temperature within a compositional fluctuation range extending from the carbon-containing material to carbon by decreasing the other non-carbon main components, to thereby selectively elute the other non-carbon main components into the metal bath while maintaining an external shape of the carbon-containing material to give a porous carbon material having microvoids.
C22C 1/10 - Alliages contenant des composants non métalliques
C22C 32/00 - Alliages non ferreux contenant entre 5 et 50% en poids d'oxydes, de carbures, de borures, de nitrures, de siliciures ou d'autres composés métalliques, p. ex. oxynitrures, sulfures, qu'ils soient soient ajoutés comme tels ou formés in situ
brevets
