A breather device A1 for pressure relief includes a breather pipe 121 serving as a fixing part, and an inner pipe 122 serving as a communication part and is provided by the breather pipe 121 with fixation strength enough for securing the breather device A1 to a liquid tank 101. The inner pipe 122 has a vent hole P formed therein for provide fluid-communication between the inside of the liquid tank 101 and the outside thereof in a manner such that an inner surface forming the vent hole P is made of a resin.
A compact exhaust emission purifier having an exhaust passage folded at its halfway wherein diffused reducing agent can be flowed into NOX catalyst arranged in the exhaust passage on the downstream side. Housing of the exhaust emission purifier includes a body section containing the exhaust passage on the upstream side and the downstream side, and a lid attached to the first surface of the body section provided with the outlet side opening of the exhaust passage on the upstream side and the inlet side opening of the exhaust passage on the downstream side wherein the folded portion consists of a space surrounded by the body section and the lid. On one of the first surface of the body section and the second surface of the lid facing the first surface, a guide portion is arranged along the direction intersecting the first and second surfaces for introducing the exhaust gas flow, and a reducing agent diffusing portion is arranged at the halfway of the exhaust gas flow introduced by the guide portion for accelerating mixture of the reducing agent into the exhaust gas.
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
Reliability of vehicle operation is enhanced furthermore by detecting wrong learning of the full close position of an accelerator pedal surely thereby suppressing occurrence of inconvenience resulting from wrong learning. A full close position learning processing routine for actual control where the learning value of full close position of an accelerator pedal (11) is supplied to actual operation control, and a full close position learning processing routine for monitoring where the learning value of full close position of an accelerator pedal (11) is used for judging wrong learning of learning value of the full close position learning processing routine for actual control are executed independently. When the learning value of the full close position learning processing routine for actual control is below the learning value of the full close position learning processing routine for monitoring, a judgment is made that it is wrong learning state where fuel injection exceeding the original fuel injection amount may be executed.
F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
F02D 45/00 - Electrical control not provided for in groups
4.
DEVICE FOR DISTINGUISHING LIQUID REDUCING AGENT AND EXHAUST EMISSION PURIFIER OF ENGINE
A device for distinguishing a liquid reducing agent which judges empty with higher precision as compared with prior art. The device for distinguishing a liquid reducing agent is provided with a concentration sensor and a water level sensor in a storage tank of liquid reducing agent, and characterized in that empty is judged by utilizing the water level based on the water level sensor in addition to the concentration based on the concentration sensor (step 3 and step 5). Even if a bubble is adhering to the concentration sensor and a wrong signal indicative of empty is delivered although the residual quantity of liquid reducing agent is sufficient, the water level sensor does not deliver a signal indicative of empty. Consequently, wrong judgment is prevented and accurate judgment can be made as compared with prior art.
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
Reliable brake switch failure diagnosis is enabled with a simple structure. Disagreement between the output signals of two brake switches (6a, 6b) provided so as to detect the operated state of a brake pedal (1) is detected (S102). If disagreement is detected, after a predetermined time from the detection time, disagreement between the output signals of the two brake switches (6a, 6b) is detected again (S108). If disagreement is detected again, counting a predetermined increment by a judgment counter is periodically repeated (S110). When the count of the judgment counter reaches a predetermined number α, the two brake switches (6a, 6b) are judged as failed (S114, S118).
Reliable brake switch failure diagnosis is enabled with a simple structure. When it is judged that brake switches (6a, 6b) are both not in on state and not in off state (S110, S112), first and second judgment counters perform counting (S114, S120). When it is judged that the brake switches (6a, 6b) are both in on state, the count of the first judgment counter is reset to zero (S132). When it is judged that the brake switches (6a, 6b) are both in off state, the count of the second judgment counter is reset to zero (S136). This operation is cyclically repeated. When the count of one of the first and second judgment counters exceeds predetermined corresponding value α or β (S118, S214), one of the brake switches (6a, 6b) is judged as failed. Thus, a failure that one of the brake switches (6a, 6b) stays normally on or off can be detected.
Ambient air temperature is estimated by conducting correction of the intake air temperature detected by an air flow sensor on the basis of engine rotation speed and fuel feed rate. The estimation of ambient air temperature is carried out by computing each of a dynamic temperature error of heat quantity generated around an engine and a correction coefficient of thermal influence changing in accordance with the flow rate of intake air, and by correcting the intake air temperature detected by an air flow sensor by any temperature error corrected by correction coefficient. In accordance with the ambient air temperature, there is controlled an electric heater attached to at least part of a supply system for reducing agent or precursor thereof, for example, a supply piping for communication between a reducing agent container and a reducing agent feeder.
F02D 45/00 - Electrical control not provided for in groups
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F02D 29/04 - Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
If the concentration measured by a sensor is below a predetermined threshold, the liquid is judged to be a different type of aqueous solution, and the judgment that the liquid is different is verified. If the different type judgment is valid, the number of judgments of different type is counted according to a predetermined count. If the number of judgments is a determinated threshold or more, the different type judgment is determined. At least one of the predetermined count and the determined threshold is dynamically set according to the liquid level in a reducing agent tank. As a result, count or/and different type judgment determination are carried out in consideration of the convection varying with the level change, and thus it is accurately judged whether or not the liquid is a different aqueous solution.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
10.
WATER LEVEL MEASUREMENT DEVICE AND WATER LEVEL MEASUREMENT METHOD
A water level L0 is read from a water level gauge attached to a liquid tank, and a filter value FLT in which a filter having a time constant greater than one second is applied to the water level L0 is calculated. Also, when the filter value FLT is less than a minimum value Min, the minimum value Min is sequentially revised by the filter value FLT. Finally, the minimum value Min is outputted as a final water level L. Because the minimum value using liquid surface variation characteristics is adopted as the final water level L, the measurement is less susceptible to water shake even if the water level L0 varies up and down. As a result, water level measurement accuracy is enhanced.
G01F 23/00 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
An exhaust purifying apparatus capable of reduction purification of NOx contained in exhaust with the use of a liquid reducing agent or precursor thereof (hereinafter referred to as 旜liquid reducing agent”), wherein the flow rate of liquid reducing agent added conforming to engine driving condition is computed and, on the basis of the computed addition flow rate, the addition of the liquid reducing agent is controlled, and wherein further whether or not failure occurs in the supply system of liquid reducing agent is judged on the basis of the ratio between the integrated rate obtained by sequential summation of the addition flow rate and the rate of liquid reducing agent consumed.
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
The level L0 of liquid is read from a water gauge fixed to a liquid tank, a filter value (FLT), to which a time constant greater than one second is applied, is calculated for the water level L0, and the filter value is outputted as a final water level L. With such an arrangement, even if the liquid surface undulates to vary the water level L0 up and down, the variation is smoothed by the filter. Thus, water level measurement is less susceptible to liquid undulation and the accuracy of water level measurement is improved.
G01F 23/00 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
13.
DEVICE AND METHOD FOR DETECTING ABNORMALITY OF EXHAUST GAS TEMPERATURE SENSOR
Whether an exhaust gas temperature sensor has an abnormality or not is detected based on a correlation between an exhaust gas temperature detected by an exhaust gas temperature sensor and an exhaust gas temperature estimated depending on operating conditions of the engine. The abnormality detection is made such that, when variation characteristics of the detected exhaust gas temperature follow variation characteristics of the estimated exhaust gas temperature, the exhaust gas temperature sensor is determined to be normal, and when not, the exhaust gas temperature sensor is determined to be abnormal.
It is judged that a reduction agent supply system located at the downstream of a pump for inlet and pressure feed of a liquid reduction agent in a reduction agent tank is clogged if the pressure of a liquid reduction agent remaining at the downstream of the pump and the upstream of a flow rate control valve is not lowered than a first predetermined pressure until an accumulated injection amount obtained by successively accumulating an injection amount of the liquid reduction agent calculated in real time according to the engine operation state after temporarily stopping the pump reaches a predetermined amount.
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
An engine exhaust emission control device includes: an electric pump for inlet and pressure feed of a liquid reduction agent in a reduction agent tank; a flow rate control valve for controlling the flow rate of the liquid reduction agent fed under pressure; and an injection nozzle for injecting the liquid reduction agent having a controlled flow rate to the upstream of exhaust of NOx reduction catalyst. Upon engine start, air under a high pressure is fed back to a reduction agent supply system located at the upstream of the flow rate control valve and so as to judge whether the reduction agent supply system is clogged according to the pressure change. When the number of judgments that the reduction agent supply system is clogged exceeds a predetermined number, it is judged that a fatal clogging which cannot be easily removed has occurred in the reduction agent supply system.
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
Provided is a network type eco-drive diagnosis system which ranks an eco-drive according to travel data inputted from a traveling vehicle by using a network and distributes the eco-drive rank information to the traveling vehicle in real time so that a driver can be conscious of the eco-drive. Travel data is transmitted from an object vehicle traveling in a predetermined section of an object road via a radio transmission path to a server. The server accumulates the travel data for each of the predetermined sections and compares the travel data to the accumulated past travel data on the same section so as to perform ranking of the eco-drive. The server distributes the eco-drive rank information in real time to the object vehicle after the it has passed the predetermined section.
G01F 9/00 - Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
B60R 16/02 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric
G07C 5/08 - Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time
G08G 1/13 - Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles to a central station the indicator being in the form of a map
A heater component for a pipe joint, which can be simply installed on the pipe joint, which can be assembled to the pipe joint with stable quality, and which can be retrofitted to an existing joint to eliminate costs of a mold etc. The heater component for a pipe joint partially has a fitting section with a shape fitting to a part of the outer shape of the joint, and also has a holding recess for holding a heater wire and provided in that portion of the inner surface which excludes the fitting section. When the heater component is installed on the joint by fitting the fitting section to the part of the outer shape of the joint with the heater wire held in the holding recess, the heater wire held in the holding recess is in contact with the joint. When electricity is conducted to the heater wire, heat of the heater wire is transmitted to the joint.
A breather device (A1) for pressure relief comprises a breather pipe (121) as a fixed part and an inner pipe (122) as a communication part. The strength of the fixation of the breather device (A1) to a liquid tank (101) is kept by the breather pipe (121). The inner pipe (122) forms a vent hole (P) for allowing the inside of the liquid tank (101) to communicate with the outside. The inner surface of the inner pipe forming the vent hole (P) is made of a resin.
A liquid tank (7) having a pressure releasing vent (25), where a shielding plate (30) surrounding the vent (25) is placed inside the liquid tank (7). The shielding plate (30) forms an isolated chamber (32) connected to the vent (25). The shielding plate (30) allows the isolated chamber (32) and a space in the liquid tank (7), which space excludes the isolated chamber (32), to be communicated with each other at a portion (31a) located at a side, in the horizontal direction, of the vent (25). On the other hand, the shielding plate (30) blocks, at a portion (31b) located below the vent (25), movement of the liquid between the isolated chamber (32) and the space, excluding the isolated chamber (32), in the liquid tank (7).
When the temperature of NOx reducing catalyst disposed in an engine exhaust pipe becomes higher than given value, a liquid capable of lowering the exhaust temperature by evaporation heat is appropriately injected on an exhaust upstream position with respect to the NOx reducing catalyst. The above given value refers to a temperature having no adverse impact on the NOx reducing catalyst, in particular, a temperature slightly lower than the heat resistance limit of the support or components of the catalyst. As the liquid, use is made of an increment of liquid reducing agent or precursor thereof fed to the NOx reducing catalyst, or water.
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
F01N 3/04 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
The interior of a reducing agent tank for storing of a liquid reducing agent or precursor thereof is dually divided by means of a partition fitted in the vicinity of a compensating port into a subtank communicating with the compensating port and a main tank liquid-tightly partitioned therefrom. The subtank is equipped with a liquid discrimination sensor capable of discriminating whether or not the compensating liquid supplied through the compensating port is a liquid reducing agent or precursor thereof. When the liquid discrimination sensor discriminates the compensating liquid as a liquid reducing agent or precursor thereof, a reducing agent addition ECU actuates opening of an opening-closing unit mounted on a bottom plate of the partition so as to induce communicating of the subtank with the main tank.
B01D 53/74 - General processes for purification of waste gasesApparatus or devices specially adapted therefor
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
An operation aid for reducing force for operating a piston-type manual pump. The operation aid is retrofittable to a piston-type manual pump available in marketplace to facilitate pumping work. The operation aid for a piston-type manual pump can be attached to a storage container (D) by fitting a screw fitting member (4) to a mouth section of the storage container (D), where the screw fitting member (4) is rotatably provided at a suction pipe section (3) extending from a pump body (2). Reciprocating a piston rod (5) projecting from the pump body causes a piston in the pump body to operate to pump out liquid. The operation aid has a support plate (11), a strut (12), a rocking arm (13). The support plate (11) has an opening at which the mouth section of the storage container and the screw-fitting member are screwed to each other, and the support plate (11) is fixed in place by screwing the screw-fitting member to the mouth section through the opening. The strut (12) is raised on the support plate. The rocking arm (13) has a support point (13a) supported by the strut, a power point (13b) to which force is applied, and a working point (13c) provided at a position obtained by dividing internally or externally the section between the support point and the power point. The piston rod (5) is connected to the working point (13c).
A charge/discharge of a capacitor system (10) with stacked electric double layer capacitors is regulated by an inverter/converter (9) for stabilizing an output power of a wind power generator (1). The inverter/converter controller (53) controls the inverter/converter (9) such that, when the state of charge (SOC) of the capacitor system (10) exceeds an upper threshold (H1), which is smaller than an upper limit (H2), the charged power of the capacitor system (10) gradually decreases according to an excess amount. The inverter/converter controller (53) also controls the inverter/converter (9) such that, when the state of charge (SOC) is below a lower threshold (L1) which is higher than a lower limit (L2), the discharged power of the capacitor system (10) gradually decreases according to a short amount, thereby preventing overcharging and overdischarging of the capacitor system (10).
An exhaust purifier characterized by including a casing having multiple hierarchical pathways provided in its interior through partitioning of the interior so as for an exhaust pathway extending from an exhaust inlet to an exhaust outlet to be folded back at least once; a reducing catalyst capable of reduction purification of NOx with the use of a reducing agent; a nozzle for injecting of the reducing agent or a precursor thereof on the exhaust upstream side of the reducing catalyst; and a filter (DPF) for trapping of PM from the exhaust, wherein the reducing catalyst and the DPF are disposed in different hierarchical pathways. Thus, the exhaust purifier having, added thereto, both of the functions of PM trapping and NOx removal by SCR can be rendered increasingly compact.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
F01N 3/04 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
Mounted on an upper surface of a container main body are a base of a water level indicator detecting a remaining amount of liquid reducing agent, a base of a densitometer detecting concentration of liquid reducing agent, a heat exchanger surrounding detectors of the water level indicator and the densitometer, and circulating engine coolant for heat exchange between liquid reducing agent and engine coolant, and a suction tube for sucking liquid reducing agent from a position adjacent to the bottom of container main body and between water level indicator and densitometer. A box-shaped protector surrounds the water level indicator, densitometer and suction tube which are located in a region adjacent to a lower portion of the heat exchanger. Heat from the heat exchanger is trapped in the protector to generate convection in that region, thereby unfreezing frozen liquid reducing agent around the water level indicator, densitometer and suction tube.
When concentration of a reducing agent contained in a reducing agent container deviates from a predetermined range or when the residual quantity of the reducing agent becomes smaller than a predetermined quantity, it is decided that the reducing agent is a different kind of aqueous solution or is facing shortage (decision of abnormality). When decision of abnormality is made when engine restart operation is performed, and if a predetermined distance or more is traveled after the decision, engine restart is inhibited. If the time elapsed after engine stop before restart is less than a predetermined time, it is decided that engine stop is not intended and restart of engine is permitted to cope with an emergency situation. If a predetermined distance is not traveled after the decision of abnormality, restart of engine is permitted so that the distance up to a reducing agent supply point can be traveled.
F02D 43/00 - Conjoint electrical control of two or more functions, e.g. ignition, fuel-air mixture, recirculation, supercharging or exhaust-gas treatment
Not only is a reduction catalyst capable of reduction purification of NOx disposed in an engine exhaust pipe but also in two pipes branched from the exhaust pipe positioned in the exhaust upstream, there are respectively disposed plural oxidation catalysts differing from each other in the capacity of oxidation of NO to NO2. A control unit appropriately controls a flow rate control valve capable of independent and multistaged control of exhaust flow rates to the branched pipes on the basis of exhaust volume flow rate and oxidation catalyst temperature so that the ratio between NO and NO2 in the exhaust led to the reduction catalyst approaches a given ratio.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
A pouring hose (1) has an end portion (2) fixed to an extraction opening of a tank filled with liquid reducing agent, an end portion (3) inserted into the pouring opening of a container into which the liquid reducing agent is poured, and a flexible intermediate portion (4) between the end portions (2, 3). At least one ridge (3a) is provided around the outer circumferential surface of one of the end portions and at least one groove (2c) is provided around the inner circumferential surface of the other end portion. The ridge and the groove can be engage with each other to couple both end portions, which makes the intermediate portion annular. Only changing slightly the shape of the two end portions enables the pouring hose to be stowed in an annular shape that can block entry of foreign matters into the intermediate portion.
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F16L 33/00 - Arrangements for connecting hoses to rigid membersRigid hose-connectors, i.e. single members engaging both hoses
F16L 33/28 - Arrangements for connecting hoses to rigid membersRigid hose-connectors, i.e. single members engaging both hoses for hoses with one end terminating in a radial flange or collar
A container (1) for a liquid, comprising a container body (2), a hose (3) connected to the container body (2), and a hose connector (4) detachably connecting the hose (3) to a tank (6) in the inserted state of the tip of the hose into the tank by a prescribed length. The hose connector (4) comprises a first locking part (42) brought into contact with the peripheral wall (61a) of the tank (6) forming a hose insertion hole (H) in that inserted state to stop the insertion of the hose (3) into the tank (6) beyond a length exceeding the prescribed length and a second locking part (43) limiting the movement of the hose (3) in a direction apart from the tank (6) by engaging with the peripheral wall (61a) of the hose insertion hole.
A bag-in box, wherein an inner bag formed integrally with a liquid spout detachably threaded with a cap or a hose is stored in an outer box in a roughly rectangular parallelepiped shape comprising four side plates forming a body part, a top plate forming a double structure top part, and a bottom plate forming a double structure bottom part. A slit of a roughly channel-shape having a tip extending from a fold line in the direction of the top plate is bent inward along the fold line at a position apart a prescribed distance from the upper end of the side plate arranged continuously with the top plate positioned on the inside of the double structure. A fixed hole for fixedly fitting the liquid spout and an elongated hole allowing a worker to insert a finger therein are formed from the fold line at the portion of the side plate surrounded by the slit to the tip side in this order, and a perforation enabling the cutoff of the portion thereof facing the fixed hole and the elongated hole is formed on the top plate positioned on the outside of the double structure.
Use is made of temperature-sensitive urea sensor (74). On the basis of temperature information detected by the urea sensor (74), there is determined the size of convection of urea water occurring in storage tank (41). For the detection of abnormality, use is made of concentration (Dn) detected when the convection is weak and determined as not influencing the accurate detection of abnormality, for example, in the instance of being low in temperature change ratio (GRDt) of the urea water.
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
F02D 45/00 - Electrical control not provided for in groups
Temperature sensors are disposed to a tank for storing a liquid reducing agent at two close positions, respectively, and a concentration sensor with a heater is attached to one temperature sensor. At every predetermined time after starting an engine, the heater of the concentration sensor is operated and the concentration of the liquid reducing agent is measured indirectly from the temperatures detected by the temperature sensors. If the measured concentration is lower than a lower limit threshold, between the lower and an upper limit threshold and higher than an upper limit threshold, the liquid reducing agent is judged to be a different kind of aqueous solution, normal or empty, respectively. When the liquid reducing agent is judged to be empty or a different kind, it is judged whether the judgment is proper or not on the basis of the state of the liquid reducing agent. If the judgment of empty or a different kind is proper, the number of judgments of empty or different kind is counted. If the number of judgments of empty or different kind is not smaller than a first predetermined value, the judgment is finally determined.
A reduction catalyst is placed in an exhaust passage of an engine, and a reducing agent added to an exhaust gas and NOx in the exhaust gas are reacted on the catalyst. A member for passing the exhaust gas added with the reducing agent is provided, and this member is formed by welding in the axial direction. This member is arranged so that the inner surface of the welded portion overhangs in the exhaust passage.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 13/08 - Other arrangements or adaptations of exhaust conduits
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
34.
UNIT CAPABLE OF JUDGING CONDITION OF REDUCING AGENT INJECTION USED IN EXHAUST PURIFICATION SYSTEM
An exhaust purification system adapted to mix a liquid reducing agent with air and carry out injection feeding of the mixture upstream of reduction catalyst (20) to thereby effect reduction purification of NOx contained in exhaust, wherein noting the correlation between factors, such as travel distance, fuel consumption, air consumption and driving time, and the amount of liquid reducing agent consumed, whether the condition of injection of liquid reducing agent is normal or abnormal is monitored through judging of whether or not the amount of liquid reducing agent consumed at given travel distance, given fuel consumption, given air consumption or given driving time falls within a given range.
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/04 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
35.
Hybrid vehicle and method of controlling the vehicle
A controller (10) of a hybrid vehicle determines an engine torque at a point on an engine torque high efficiency line at the current engine rotation speed as a target engine torque, and determines the current engine torque from the current engine rotation speed and current accelerator depression amount. Then, when the gear position of a transmission (2) is neutral, the vehicle is stationary and a storage device (9) requires charging, the controller (10) sets the difference between the target engine torque and the current engine torque as a target power generation torque of a motor generator (4), sets a transitional time period corresponding to the target power generation torque, and performs control over the transitional time period to raise the power generation torque of the motor generator gradually to the target power generation torque.
patents
