Abstract:
PROBLEM TO BE SOLVED: To provide a hybrid vehicle that can improve fuel consumption more when an accelerator operation quantity is increased only for a short time, and that to drive decrease at once afterwards.SOLUTION: A hybrid vehicle 10 includes an internal combustion engine 20; a second power generation electric motor MG2; a battery 64; a first power generation electric motor MG1; transmission mechanisms (30, and 50), and control devices (PMECU 70, motor ECU 72, and engine ECU 73, and the like). When an engine request output becomes smaller than the engine stop threshold in operation of the engine 20, the control device stops operation of the engine 20. However, the control device performs load operation of the engine to the point that the engine operation duration becomes longer than the engine stop permission time, even if the engine request output becomes smaller than the engine stop threshold and, as a result, the electric power that charges the battery from the first power generation electric motor MG1 is generated.
Abstract:
PROBLEM TO BE SOLVED: To provide a hybrid vehicle that can fill an acceleration request by output of an engine by starting the engine when driving to increase accelerator operation quantity little for a short while.SOLUTION: A control device starts driving of an engine 20, when the engine request output decided according to the accelerator operation quantity, during operation stop of the engine 20 grows more than the engine starting threshold, and stops driving of the engine 20, when the engine request output becomes smaller than the engine stop threshold during operation of the engine 20. The control device makes the torque equal to a user request torque decided according to the accelerator operation quantity to act on drive shaft 53 by controlling "the output torque of the engine 20 and the output torque of the second power generation electric motor MG2". In addition, when the engine 20 is stopped, the control device reduces the engine starting threshold smaller, longer the continuous time when the accelerator operation quantity is not zero.
Abstract:
PROBLEM TO BE SOLVED: To provide a vehicle drive control device with an engine, a traveling electric motor, and a catalytic device, wherein an engine output fluctuation when warming-up ending of the catalytic device is suppressed and thereby degradation of emission is reduced.SOLUTION: A catalyst warming-up control warms up the catalytic device 76 with an engine 14 while restricting an engine output so that the engine 14 becomes in a state of a predetermined warming-up drive for warming up the catalytic device 76, and the control is finished when a catalyst temperature TEMPbecomes higher than a catalyst temperature determination value TEMP1, and where a user-requested power P0* is smaller than a predetermined user-requested determination value P01*. As a result, the user-requested power P0* is suppressed when the catalyst warming-up control is finished, and an engine output Pe corresponding to the suppression is lowered. The temporary fluctuation of the engine output Pe is thereby suppressed when the catalyst warming-up control is finished, and an emission degradation is reduced.
Abstract:
PROBLEM TO BE SOLVED: To provide a hybrid vehicle which includes an internal combustion engine and a motor each outputting a power for traveling, the hybrid vehicle obtaining torque for traveling corresponding to the driving force request operation of a driver while suppressing deterioration in emission, immediately after the initial start of the internal combustion engine after the start of traveling. SOLUTION: In the hybrid vehicle, when it is determined that a required power Perq is equal to or more than a power limit determination threshold Pref based on a cooling water temperature Tw showing the temperature of the engine (steps S120 to S140) after the start of the engine in response to an initial start request after the start of traveling is completed, the engine is self sustained only for a power limit time tref, and the engine and motors MG1 and MG2 are controlled so that running torque based on a required torque Tr* can be obtained (steps S180 to S260). COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide the control device of a hybrid car, preventing the deterioration of fuel consumption by enlarging a traveling distance in EV traveling. SOLUTION: A vehicle 100 includes: a charging part 30 for performing the external charging of electricity accumulating parts 4-1 and 4-2 by receiving a power from an external power source; and a first motor generator MG1 generating a power by receiving a driving force from an engine 18. Electricity accumulating parts 4-1 and 4-2 are configured so as to be internally charged by receiving a power from the power generator MG1. The vehicle 100 selects either an EV priority mode in which internal charging to the electricity accumulating parts by the power generator is restricted, or an HV priority mode in which the internal charging by the power generator is controlled in order to maintain the charging state value of the electricity accumulating part within a prescribed range. When prescribed operation conditions are established under the traveling of the vehicle 100, a drive request is made to an engine 18 by a control device 2. The control device 2 changes the operation conditions of the engine 18 in the EV priority mode and the HV priority mode. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a control device of a hybrid vehicle which can prevent deterioration of mileage by extending a traveling distance in EV (Electric Vehicle) traveling. SOLUTION: A vehicle 100 includes: a charging part 30 for carrying out external charge of capacitors 4-1 and 4-2 receiving power from an external power supply; and a first motor generator MG 1 which can generate electric power when receiving driving force from an engine 18. The capacitors 4-1 and 4-2 are constituted so as to be internally chargeable when receiving the power from a power generation part. The vehicle 100 travels by selecting either an EV priority mode wherein internal charge to the capacitor by the power generation part is restricted, or an HV priority mode which controls internal charge by the power generation part so that a charge status value of the capacitor is maintained within a predetermined limit. A control device 2 generates an operation request to an engine 18 when a predetermined operating condition is satisfied during traveling of the vehicle 100. The control device 2 changes the operating condition of the engine 18 between the EV priority mode and the HV priority mode. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To inhibit the deterioration of emission by more appropriately executing first fuel injection at the start of an internal combustion engine. SOLUTION: An estimated intake air quantity KL is estimated based on engine speed Ne, a throttle opening Th, intake pipe negative pressure Pin and the like (S140), an initial fuel injection quantity τ is set based on the estimated intake air quantity KL (S150), and a correction coefficient k1 is set in a tendency of being smaller as engine speed Ne which is calculated first immediately after the determination of a crank angle CA becomes higher (S160). An execution fuel injection quantity τ* is set by multiplying the initial fuel injection quantity τ by the set correction coefficient k1 (S170), and the engine is started by executing the fuel injection of execution fuel injection quantity τ*. Consequently, fuel injection is executed more appropriately and the deterioration of emission during the start can be inhibited. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To allow a driver not to sense vibrations due to instability of combustion of an internal combustion engine in the case in which an operation of the internal combustion engine is needed for heating by a heating apparatus. SOLUTION: When there is no need to operate an engine 22 for vehicle requiring power P* but there is a need to operate the engine 22 for heating by an air conditioner (S120, S140), if the remaining capacity SOC of a battery is small (S150), a vehicle control method sets a target engine speed Ne* and target torque Te* of the engine 22 by using engine power Pe* having a tendency to become smaller as a vehicle speed V is higher (S160, S170), and performs a load operation of the engine 22. Thereby the method may make the combustion of the engine 22 stable in comparison with a spontaneous operation of the engine 22, and may prevent the driver from sensing the vibrations due to the instability of the combustion. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust odor suppression device of an internal combustion engine capable of further promptly suppressing an exhaust odor becoming pronounced in an idle operation of the engine. SOLUTION: An electronic control device 50 executes exhaust odor suppression control for making an air-fuel ratio in a preset period in an idle operation of the internal combustion engine 10 lean. In executing the exhaust odor suppression control, the electronic control device increases an idle revolving speed and thereby increases an exhaust air flow rate in the execution of the exhaust odor suppression control as compared with that in a non-execution time thereof. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress reduction of energy efficiency of a vehicle.SOLUTION: During the running stop of an engine, when required power Pe* is outside of a NV power range, a fuel economy running point is set to an imagined running point according to a fuel economy operation line and the required power Pe* and, when the required power Pe* is within the NV power range, a NV running point is set to an imagined running point according to the NV operation line and the required power Pe* (S400 to S460). When the imagined running point is not a running point on the NV operation line (it is a running point on the fuel economy operation line), a value Ps1 is set to a start threshold value Pstart and, when the imagined running point is a running point on the NV operation line, a value Ps2 or a value Ps3 larger than the value Ps1 is set to a start threshold value Pstart (S480 to S530).