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
Abstract:
PROBLEM TO BE SOLVED: To simplify a device necessary to preheat an engine and more promptly start the engine while preheating it. SOLUTION: A circulation pipe passage 61 forming a circulation passage of a heat exchange medium is provided with a heat storage tank 65 warming and holding the heat exchange medium heated by the engine 22 and a water pump 62 of which rotational shaft is mechanically connected to a crankshaft of the engine 22 for circulating the heat exchange medium inside the circulation pipe passage 61 and driven by rotational force of the crankshaft. When start of the engine 22 is instructed, if engine water temperature from a temperature sensor 23 is below predetermined temperature, cranking of the engine 22 is continued for predetermined time to preheat the engine 22. After the predetermined time passes, fuel injection and ignition are started to start the engine 22. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide the warming-up equipment of an internal combustion engine which can preferably prevent the aggravation of warming-up performance. SOLUTION: In the warming-up equipment of an internal combustion engine, prior to the operation of the internal combustion engine E, when cooling water stored in a heat accumulation tank 21 is supplied to the internal combustion engine E by an electromotive water pump 22, the supply of the cooling water by the water pump 22 is stopped when it is detected that the temperature of the internal combustion engine E is not lower than the temperature of the cooling water. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To keep performance of a working equipment mounted on a specially-equipped vehicle which is applied with a hybrid system. SOLUTION: The specially-equipped vehicle is equipped with an auxiliary working machine 400 for special application, a battery 200 that contains an electric power to be supplied to the auxiliary working machine 400 and a motor generator 550, and an ECU100 for controlling the specially-equipped vehicle. The ECU100 comprises a detection circuit that detects the state of an engine 510 and the battery 200 serving as a supply source of an electric power, a watthour detecting circuit that detects the watthour required for the specially-equipped vehicle; and a decision circuit that decides a destination of an electric power from a supply source while supplying of the electric power to the auxiliary working machine 400 is preferred than to the motor generator 550, based on the state of supply source and the required watthour. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a thermal storage system controlling a pump for thermal storage on the basis of a flow rate in a warm-up stroke of an internal combustion engine. SOLUTION: This thermal storage system controls the power supply to the pump for thermal storage to adjust a present flow rate to a target flow rate. By controlling the pump for thermal storage on the basis of the flow rate, the stable warm-up stroke can be realized by absorbing the influence due to the individual variation of the pump and a piping system, and the change of properties with time. When the warm-up is completed, a value of electric power in completion is recorded as a present learning value. The present learning value is utilized as the initial applied power in the next warm-up stroke. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a heat storage system for dispersing a load on a pump. SOLUTION: The heat storage system operates a warm-up pump 18 in a warm-up stroke and does not operate it in a heat storage stroke. Alternatively, in the heat storage stroke, a heater pump 15 is operated to accelerate the collection of hot water. The collection of the hot water can also be accelerated by increasing the rotating number of a circulation pump 3. Since a great load is exerted on the warm-up pump 18 during warm-up stroke, the heat storage stroke is executed by another pump, whereby the operating frequency of the warm-up pump 18 is reduced and the life of the warm-up pump 18 is elongated. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To solve such a problem that the exhaust heat of an inverter is not collected in a hybrid car. SOLUTION: An ECU for the inverter determines whether the inverter cooling water is collected in a thermal storage tank or not (S10). In a case when the inverter cooling water is collected (Y of S10) in an internal combustion engine stopped state (Y of S12), the ECU for inverter compares a temperature of the engine cooling water with a temperature of the inverter cooling water (S14). The ECU for inverter opens a selector valve (S16), when the temperature of the inverter cooling water is higher (Y of S14). COPYRIGHT: (C)2004,JPO