Abrégé

A gas injection valve for a high-pressure difference gas engine, comprising an electromagnetic valve (1), an armature (2), a limiting ring (3), a limiting disc (4), a valve shell (5), a valve plate (6), a cylindrical pin (7), a valve seat (8) and a reset spring (13). A stepped through hole is formed at the center of the valve shell (5) in a penetrating mode, an air outlet is formed at the lower end of the valve shell (5), and a slotted gas intake hole (51) is formed at the side wall of the valve shell (5). The valve seat (8), the valve plate (6), the limiting disc (4) and the limiting ring (3) are sequentially mounted in the stepped through hole from bottom to top. The lower end face of the valve plate (6) is mated with the upper end face of the valve seat (8), and a valve plate rudder-shaped gas flow channel or a valve seat rudder-shaped gas flow channel is formed. Gas can be supplemented timely and effectively, and a gas intake throttle effect is reduced. A sealing area of the valve seat (8) and the valve plate (6) can be reduced, the sealing specific pressure is increased, and the sealing specific pressure is positively correlated with the working environment pressure. The problem that an electromagnetic force of the electromagnetic valve (1) is insufficient in a high-pressure difference environment is avoided, the valve plate (6) can be smoothly opened in a high-pressure difference gas environment, the engine performance is further optimized, and a response speed is increased.

Classes IPC  ?

• F02M 21/02 - Appareils pour alimenter les moteurs en combustibles non liquides, p. ex. en combustibles gazeux stockés sous forme liquide en combustibles gazeux

Abrégé

A multi-cylinder combined high-pressure oil pump of a marine low-speed machine, comprising: a pump body assembly (1), which comprises: a pump body (101) and a bearing bush (102), the pump body (101) being provided with a first horizontal middle hole and a plurality of first vertical middle holes, the first horizontal middle hole being in communication with the first vertical middle holes; a pump cover (2), which is mounted on an upper side of the pump body (101), the pump cover (2) having a second horizontal middle hole (201) and a plurality of second vertical middle holes which are in communication with the second horizontal middle hole; a plunger and barrel assembly (4), a plunger spring (6), a lower spring seat (7) and a guiding piston assembly (8) are mounted in each vertical middle hole formed by the first vertical middle hole and the second vertical middle hole; the plunger and barrel assembly (4) is screwed into the second vertical middle hole, and an oil inlet/outlet valve assembly (9) is mounted in the plunger and barrel assembly (4); a camshaft (10) is mounted in the first horizontal middle hole of the pump body (101); a cooling circulation oil path is provided in an electric control proportional valve; and a mixed oil path is provided in the pump cover (2). By means of electronic control, oil path layering and optimization of the sealing structure, the oil supply regulation sensitivity and heavy oil reliability of the high-pressure oil pump are improved, and moreover, the application range of heavy oil of a low-speed machine is expanded, and the usage environment of heavy oil of 750 Cst is satisfied.

Classes IPC  ?

• F02M 59/10 - Pompes spécialement adaptées à l'injection de combustible non couvertes dans les groupes du type à piston alternatif caractérisées par l'entraînement du piston
• F02M 59/46 - Clapets
• F02M 53/00 - Appareils d'injection de combustible caractérisés par des moyens de chauffage, de refroidissement ou d'isolation thermique

Abrégé

Disclosed is an electronic control common-rail-type heavy oil injector, comprising an oil injector body (1), an electro-hydraulic control member, and a nozzle member, wherein an annular groove (110) is provided in the middle of an outer side of a guide sleeve (8) in the electro-hydraulic control member, a transverse through hole is provided in the middle of the annular groove (110) and is in direct communication with a middle hole of the guide sleeve (8), and sealing rings (10) are arranged on two sides of the annular groove (110) to divide the interior of the oil injector body (1) into three cavities. Three annular grooves (111) are provided in a guide section of a control valve core (9), and the second annular groove (111) is in communication with the transverse through hole in the middle of the guide sleeve (8). An electromagnetic element is in contact with cooling oil, and a cooling oil way is isolated from a fuel oil way by means of dynamic sealing, static sealing and drainage, such that corrosion and thermal damage being caused to electronic elements by heavy oil can be effectively prevented; and a countersunk groove is provided in the middle of the top end of a metering hole plate (14), a ball valve seat guide sleeve (11) can be sleeved in the countersunk groove of the metering hole plate (14) and is in clearance fit with a ball valve seat (12), and the ball valve seat guide sleeve has certain guiding capacity for axial movement of the ball valve seat (12).

Classes IPC  ?

• F02M 53/04 - Injecteurs avec moyens de chauffage, de refroidissement ou d'isolation thermique
• F02M 51/06 - Injecteurs particuliers à cet effet
• F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
• F02M 61/10 - Autres injecteurs avec corps des clapets allongés, p. ex. du type soupapes à aiguille
• F02M 61/18 - Buses d'injection, p. ex. comportant des sièges de clapets
• F02M 61/16 - Détails non couverts dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
• F02M 63/00 - Autres appareils d'injection ayant des caractéristiques particulières non couvertes dans les groupes ou Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes

Produits et services

Fuel conversion apparatus for internal combustion engines; turbines, other than for land vehicles; taps [parts of machines, engines or motors]; hydraulic controls for machines, motors and engines; sparking plugs for internal combustion engines; gasoline engines, other than for land vehicles; igniting devices for internal combustion engines.

Produits et services

Igniting devices for internal combustion engines; turbines, other than for land vehicles; taps being parts of machines, engines or motors; hydraulic controls for machines, motors and engines; sparking plugs for internal combustion engines; gasoline engines not for land vehicles

Produits et services

Carburetter feeders; trimming machines; metalworking machines; stands for machines; tools (parts of machines); injectors for engines; joints (parts of engines); cylinder heads for engines; motors for boats; control mechanisms for machines, engines or motors; centrifugal machines; pumps (parts of machines, engines or motors); pressure valves (parts of machines); shaft couplings (machines); steam/oil separators; speed governors for machines, engines and motors; machine wheelwork; journals (parts of machines).

Produits et services

Carburetor feeders; trimming machines, namely, paper trimming machines for commercial and industrial use; metalworking machines; stands for machines; tools being parts of machines, namely, machine tools for removing waste material; injectors for engines; joints being parts of engines, namely, joints for driving shafts; cylinder heads for engines; motors for boats; control mechanisms for machines, engines or motors, namely, hydraulic controls for machines, motors and engines; centrifugal grinding machines; pumps being parts of machines, engines or motors; pressure valves being parts of machines; shaft couplings for machines; steam/oil separators being parts of machines; speed governors for machines, engines and motors; machine wheelwork; journal camshafts/boxes being parts of machines

Produits et services

Carburetter feeders; trimming machines; metalworking machines; stands for machines; tools (parts of machines); injectors for engines; joints (parts of engines); cylinder heads for engines; motors for boats; control mechanisms for machines, engines or motors; centrifugal machines; pumps (parts of machines, engines or motors); pressure valves (parts of machines); shaft couplings (machines); steam/oil separators; speed governors for machines, engines and motors; machine wheelwork; journals (parts of machines).

Produits et services

Carburetor feeders; trimming machines, namely, paper trimming machines for commercial and industrial use; metalworking machines; stands for machines; tools being parts of machines, namely, machine tools for removing waste material; injectors for engines; joints being parts of engines, namely, joints for driving shafts; cylinder heads for engines; motors for boats; control mechanisms for machines, engines or motors, namely, hydraulic controls for machines, motors and engines; centrifugal grinding machines; pumps being parts of machines, engines or motors; pressure valves being parts of machines; shaft couplings for machines; steam/oil separators being parts of machines; speed governors for machines, engines and motors; machine wheelwork; journal camshafts/boxes being parts of machines