Abstract:
PROBLEM TO BE SOLVED: To suppress the purification performance of an exhaust gas purifying catalyst from being degraded when the arbitrary selection of driving conditions to specify the settable range of a request driving force requested for traveling is permitted. SOLUTION: In a hybrid car 20, when a deceleration request based on accelerator OFF is made when S position is selected where the arbitrary selection of shift positions SP1 to SP6 is permitted, and fuel cut can not be inhibited from the status of a battery 50, an engine 22 and motors MG2 and MG2 are controlled so that a driving force based on a request torque Tr* can be output according to fuel cut (S410, S420, S360 to S400). When the fuel cut can be inhibited from the status of the battery 50, the engine 22 actually and independently operates at the target speed Ne0, and the engine 22 and the motors MG1 and MG2 are controlled so that the driving force based on the request torque Tr* can be outputted (S340 to S400). COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To inhibit excess supply of fuel at a time of start of an internal combustion engine. SOLUTION: An automobile 20 is provided with an engine 22 provided with a cylinder fuel injection valve 25 connected to a delivery pipe 66 provided with a fuel pressure sensor 69 and injecting fuel supplied by a fuel pump 62. The automobile 20 improves startability of the engine 22 by driving a fuel pump 62 before driving a high pressure pump 64 and performing pre-supply process supplying fuel to the high pressure pump 64 when it is judged that fuel does not leak from the cylinder fuel injection valve 25 at a time of start of the engine 22. On the other hand, the pre-supply process is not performed to inhibit fuel leak from the cylinder fuel injection valve 25 when it is judged that fuel leaks from the cylinder fuel injection valve 25. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel injection device for a vehicle capable of maintaining good exhaust emission property upon starting of an engine by improving oil tightness in each injector while the vehicle operation is stopped. SOLUTION: On the downstream side of a low pressure fuel pump 180 for discharging fuel inside a fuel tank 200 at a predetermined pressure, a low pressure delivery pipe 160 which is a tubular body having the injector 120 for intake air passage injection formed therein, a fuel pressure regulator 170, a high pressure fuel pump 155, a high pressure delivery pipe 130 which is a tubular body having the injector 110 for cylinder injection formed therein, and an electromagnetic relief valve 210 are connected in series. By releasing the electromagnetic relief valve 210 when operation of the engine is stopped, fuel pressure inside the high pressure delivery pipe 130 can be lowered corresponding to the stop of the low pressure fuel pump 180, so that oil tightness of each of the injectors 110 and 120 can be secured. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To display information on fuel that has been consumed not in traveling. SOLUTION: In an automobile provided with an air-conditioner for heating a cabin with an engine as the heat source, fuel consumed by the engine is computed as fuel consumed not for traveling, when the cabin is heated by the air conditioner, the engine is running, and the vehicle is parked. The computed fuel is displayed as the fuel consumption of air-conditioning in parallel with the amount of fuel consumed by the overall vehicle on a display installed in the cabin. It is thereby possible to notify the driver and the passengers, of the amount of fuel consumed not for traveling, after comparing with the amount of fuel consumed by the vehicle as a whole. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To more appropriately estimate temperature of a fuel injection valve irrespective of automatic stop and automatic start of an internal combustion engine. SOLUTION: Tip temperature Tinj of a cylinder fuel injection valve is estimated by an engine in-operation logic when the engine is in operation (S120), and tip temperature Tinj of the cylinder fuel injection valve is estimated by an engine operation stop logic when the engine is in automatic stop (S140). Consequently, tip temperature of the fuel injection valve can be more appropriately estimated irrespective of existence of operation of the engine. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To suppress excessive temperature rise of an engine and a motor when abnormality of control signal for controlling drive of a cooling fan used for cooling of the engine, the motor or the like occurs. SOLUTION: This system determines whether abnormality exists in data input for controlling drive of the cooling fan (step S100, S110). If existence of abnormality is determined, drive level F* of the cooling fan is established to High (Hi) (step S130), and a fan motor is controlled to drive the cooling fan at established drive level F* (step S140). Consequently, the engine and the motor are prevented from reaching high temperature even if abnormality occurs in input data. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To surely start an internal combustion engine and to suppress resonance generated in the start of the engine. SOLUTION: When a battery temperature Tb does not exceed a threshold value Tb1 or a battery output limit Wout does not exceed a threshold value W1 in the start of the internal combustion engine, that is, when it is possible that motoring of the engine is not normally performed depending on a state of a battery, a fuel injection control is started before an engine speed Ne exceeds a threshold value Nref larger than a resonance speed area (S120 to S140) to start the engine. Therefore, the engine is surely started. On the other hand, when the battery can normally perform the motoring of the engine, the fuel injection control is started after the engine speed Ne exceeds the threshold value Nref larger than the resonance speed area (S120 to S140) to start the engine. Therefore, the resonance generated in the start of the engine is suppressed. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To enable a stable exhaust purification in the case when fuel is injected after active control of an air/fuel ratio is exercised. SOLUTION: When conditions for exercising an active control are established, a CPU 52 performs the active control in which a lean air/fuel ratio and rich air/fuel ratio are alternated as a target air/fuel ratio. In this case, every time the output value of a rear exhaust sensor 36 is changed, anomaly of the exhaust sensor 36 is determined on the basis of a prescribed reference time for determination. When the rear exhaust sensor 36 is determined as being normal to finish the active control, the following control is exercised. That is, in the case when the target air/fuel ratio just before the finish is a lean air/fuel ratio, the fuel/injection amount is increasingly corrected, so that the operation is continued for a neutralization control time Tntrl by correcting the target air/fuel ratio after finish of the active control to a rich air/fuel ratio. In the case when the target air/fuel ratio is a rich air/fuel ratio, the fuel injection amount is decreasingly corrected by correcting the target air/fuel ratio after finish of the active control to a lean air/fuel ratio. Thus, the amount of oxygen occlusion in an exhaust purification catalyst 31 is controlled to fall in a predetermined neutral range (range in which the purification function is not lowered). COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To more appropriately update learned values in an unlearned region and secure good startability of an internal combustion engine. SOLUTION: Out of the learned values in the unlearned region, learned values in a region in which intake air amount is smaller than that in a learn-completed region and which is not positioned in a lean side are updated after guard processing in a guard range R is performed (S190, S200). Out of the learned values in the unlearned region, learned values in a region in which intake air amount is smaller than that in the learn-completed region and which is positioned in the lean side are updated by using the learned values without performing guard processing in the guard range R (S180, S200). COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a power output device provided with an electric motor and an internal combustion engine which has an in-cylinder fuel injection valve and a port fuel injection valve, and to provide a control for switching between the fuel injection valves and adjustment of fuel injection. SOLUTION: When switching between the fuel injection from the in-cylinder fuel injection valve and the fuel injection from the port fuel injection valve is performed, counter torque Tcnt according to the switching is set (S212 to S218) and the counter torque is output from a motor (S230). The start of the corresponding adjustment is permitted, when adjustment of the fuel injection from the valves is required (S120), a requirement power P* corresponds to an adjustment power region P(Rn) in which transition to an operation point for each adjustment can be performed while preventing a driver from feeling incongruity (S160), and remaining capacity of the battery is within an allowable SOC range required for completion of the corresponding adjustment (S180). COPYRIGHT: (C)2005,JPO&NCIPI