Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle and converting kinetic energy of the drive axle into electric energy in a regenerative mode, and an electric energy storage unit connected through a drive control circuit to the electric motor, for storing electric energy. The control system has a regenerative quantity determining unit which includes first, second, and third first regenerative quantity establishing units. The first regenerative quantity establishing unit establishes a first regenerative quantity for the electric motor based on a vehicle speed of the hybrid vehicle when the supply of fuel to the engine is stopped upon deceleration of the hybrid vehicle. The second regenerative quantity establishing unit establishes a second regenerative quantity for the electric motor based on a remaining capacity of the electric energy storage unit.

Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle and converting kinetic energy of the drive axle into electric energy in a regenerative mode, and an electric energy storage unit connected through a drive control circuit to the electric motor, for storing electric energy. The control system has a regenerative quantity determining unit which includes first, second, and third first regenerative quantity establishing units. The first regenerative quantity establishing unit establishes a first regenerative quantity for the electric motor based on a vehicle speed of the hybrid vehicle when the supply of fuel to the engine is stopped upon deceleration of the hybrid vehicle. The second regenerative quantity establishing unit establishes a second regenerative quantity for the electric motor based on a remaining capacity of the electric energy storage unit.

Abstract: A power transmitting apparatus for a hybrid vehicle having an engine, first and second power distributors, and first and second motors includes a rotation transmitting unit for transmitting a drive power of the second motor to a power output shaft at a speed reduction ratio &agr;1 greater than a speed reduction ratio &agr;2 at the first power distributor and a speed reduction ratio &agr;3 (<&agr;2) at the second power distributor, a second clutch assembly for selectively connecting an output shaft of the first motor to the first power distributor and an output shaft of the engine, and a first clutch assembly for selectively connecting an output shaft of the second motor to the second power distributor and the rotation transmitting unit. A controller controls operation of the clutch assemblies and the motors depending on an operating state of the hybrid vehicle.

Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle, and electric energy storage means for supplying electric energy to the electric motor. The control system has an electric motor control unit which calculates an output power of the electric motor depending on an operating status of the hybrid vehicle and assists the engine based on the calculated output power of the electric motor. The electric motor control unit also reduces the output power of the electric motor when the rotational speed of the engine or the speed of the hybrid vehicle exceeds a predetermined value.

Abstract: A hybrid vehicle includes: a metal V-belt type infinitely variable gear-change mechanism 20 whereby the rotation of an engine E is subjected to change in gear ratio, a forwards clutch 14 and a reverse brake 15 that perform engagement/disengagement control of the engine and the infinitely variable gear-change mechanism, and a second motor generator 50 capable of driving the drive wheels arranged parallel with the engine. The control device is provided with a first hydraulic pump 3 for engine drive, a second hydraulic pump 56 that is driven by an electric motor 55 for pump drive, and a forwards/reverse clutch control valve 73 that performs changeover control of supply of working hydraulic pressure to the forwards clutch 14 etc.

Abstract: A control system for a hybrid vehicle prevents a voltage across an electric energy storage device from dropping excessively when the electric energy storage device is discharged with a generator/motor operating as an electric motor, for thereby effectively utilizing electric energy stored in the electric energy storage device as much as possible to operate the generator/motor as the electric motor. The control system also prevents the voltage across the electric energy storage device from rising excessively when the electric energy storage device is charged with the generator/motor operating as an electric generator, for thereby charging the electric energy storage device with electric energy generated by the generator/motor as much as possible while protecting the electric energy storage device.

Abstract: A regenerative braking system for generating a regenerative torque depending on a predetermined torque command in an electric motor has a current detector, a voltage detector, a rotational speed detector, a target generated power calculating unit for calculating a target generated power from the voltage of a power supply of the electric motor, the rotational speed of the electric motor, and a predetermined torque command, an actual generated power calculating unit for calculating an actual generated power of the electric motor from the armature current of the electric motor and the voltage of the power supply of the electric motor, a manipulative quantity calculating unit for calculating a manipulative quantity to eliminate the difference between the target generated power and the actual generated power from the difference according to a feedback control process, and a regenerative control unit for controlling the armature current of the electric motor depending on the manipulative quantity upon regenerative

Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for converting kinetic energy of the drive axle into electric energy in a regenerative mode, a drive control circuit for controlling the electric motor, and electric energy storage device for storing electric energy. The control system has an intake air control unit for controlling an amount of intake air supplied to the engine, and an exhaust gas recirculation control valve for controlling recirculation of exhaust gases from an exhaust system of the engine to an intake system of the engine. A control unit operates the intake air control unit to reduce the amount of intake air and operating the exhaust gas recirculation control valve in an opening direction when the electric motor operates in the regenerative mode while the hybrid vehicle is decelerating.

Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle and converting kinetic energy of the drive axle into electric energy in a regenerative mode, and an electric energy storage unit connected through a power drive unit to the electric motor, for storing electric energy. The control system has a regenerative quantity determining unit which includes first, second, and third first regenerative quantity establishing units. The first regenerative quantity establishing unit establishes a first regenerative quantity for the electric motor based on a vehicle speed of the hybrid vehicle when the supply of fuel to the engine is stopped upon deceleration of the hybrid vehicle. The second regenerative quantity establishing unit establishes a second regenerative quantity for the electric motor based on a remaining capacity of the electric energy storage unit.

Abstract: A hybrid vehicle has an engine as a propulsive power unit for the hybrid vehicle, an electric energy storage device for storing electric energy, and a generator motor operable alternatively as an electric motor for generating an assistive output power to be added to an output power generated by the engine, from the electric energy stored by the electric energy storage device, and as an electric generator for regenerating electric energy to be charged into the electric energy storage device.

Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle with electric energy and converting kinetic energy of the drive axle into electric energy, and an electric energy storage unit or a capacitor for supplying electric energy to the electric motor and storing electric energy outputted by the electric motor.

Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle with electric energy and converting kinetic energy of the drive axle into electric energy, and an electric energy storage unit for supplying electric energy to the electric motor and storing electric energy outputted by the electric motor. The control system has a deceleration demand sensor for detecting a deceleration demand for the hybrid vehicle, a braking sensor for detecting whether the hybrid vehicle is braked or not, and a decelerating regenerative control unit for causing the electric motor to regenerate electric energy when the deceleration demand sensor detects the deceleration demand.

Abstract: A control system for a hybrid vehicle includes an internal combustion engine, a drive shaft driven by the engine, a motor having an assisting function of driving the drive shaft by operating on electrical energy and a regenerating function of converting kinetic energy of the drive shaft to electrical energy, and an electrical storage device for supplying electrical energy to the motor and for storing electrical energy output from the motor. An amount of remaining charge in the electrical storage device is detected. A driver demanded output of the engine is calculated based on operating conditions of the engine. Running resistance of the hybrid vehicle is calculated based on running conditions of the hybrid vehicle. A required extra output of the engine is calculated based on a relationship between the driver demanded output of the engine and the running resistance of the hybrid vehicle. A desired output of the motor is calculated based on the extra required output of the engine.

Abstract: A control system for a hybrid vehicle including an internal combustion engine, a drive shaft driven by the engine, a generator for converting kinetic energy of the drive shaft to electrical energy to generate electric power, and an electrical storage device for storing electrical energy output from the generator, wherein idling of the engine is detected. An amount of electrical energy to be regenerated by the generator during the idling of the engine is calculated. An output from the generator is calculated based on the amount of electrical energy to be regenerated by the generator. An amount of intake air supplied to the engine is controlled in a manner such that the amount of intake air to be supplied to the engine is increased when the generator regenerates electrical energy during the idling of the engine. And an air-fuel ratio of a mixture supplied to the engine is controlled to a leaner value than a stoichiometric value during the idling of the engine.

Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle, and electric energy storage unit for supplying electric energy to the electric motor.

Abstract: A control system is provided for a hybrid vehicle including an internal combustion engine, a drive shaft driven by the engine, a generator for converting kinetic energy of the drive shaft to electrical energy to generate electric power, and an electrical storage device for storing electrical energy output from the generator. Deceleration of the engine is detected. Supply of fuel to the engine is interrupted during the deceleration of the engine. An amount of intake air supplied to the engine is controlled such that the amount of intake air supplied to the engine is increased when the generator regenerates electrical energy during the deceleration of the engine. Calculation is made of an amount of electrical energy to be regenerated by the generator during the deceleration of the engine. An output from the generator is controlled based on the amount of electrical energy calculated.

Abstract: An electric power generating apparatus having an electric generator is mounted on a hybrid vehicle which has a propulsive electric motor powered by a battery and an internal combustion engine for actuating the electric generator to generate an electric power output to charge the battery. A goodness-of-fit calculator and a generator operational amount calculator determine an operational amount for the electric generator based on a membership function and fuzzy rules stored in a fuzzy reasoning memory according to fuzzy reasoning from vehicle operating conditions including a charged and discharged condition of the battery and a vehicle speed of the hybrid vehicle, detected by operating condition detectors.

Abstract: There is provided a control system for a hybrid vehicle including an internal combustion engine, a drive shaft driven by the engine, a motor operable on electrical energy for driving the drive shaft, and electrical storage device for supplying electrical energy to the motor. An amount of assistance of the motor to the engine by driving the drive shaft is calculated based at least on load on the engine. An output from the motor is controlled based on the amount of assistance of the motor to the engine. It is determined whether conditions are satisfied for a lean operating mode of the engine in which an air-fuel ratio of a mixture supplied to the engine is controlled to a leaner value than a stoichiometric value.

Abstract: An electric power generating apparatus is mounted on a vehicle which has a propulsive electric motor powered by a battery, and has an electric generator and an internal combustion engine for actuating the electric generator to charge the battery depending on a charged/discharged state of the battery. A first operation controller operates the internal combustion engine to enable the electric generator to charge the battery if the amount of electric energy stored in the battery is smaller than a predetermined value or the time-dependent rate of increase of an amount of electric energy discharged from the battery is greater than a predetermined level. A second operation controller operates the internal combustion engine to purge a canister if the charged/discharged state of the battery fails to satisfy a condition for the first operation controller to operate the internal combustion engine and if the amount of a purged gas adsorbed in the canister is greater than a predetermined amount.