Abstract: A power transmission apparatus 1 for a hybrid vehicle having an engine 6 and a motor 7 is provided with a planetary gear mechanism 31 configured to differentially rotate a sun gear 32, a carrier 36, and a ring gear 35. The sun gear 32 is connected to one of a first input shaft and a second input shaft and to the motor 7. The ring gear 35 is connected to a lock mechanism capable of stopping a rotation state. The carrier 36 is configured to transmit power to a counter shaft 14. The other of the first input shaft and the second input shaft is configured to transmit power to the counter shaft 14 without passing through the planetary gear mechanism 31.

Abstract: When an idling stop request is generated, in the case of a B zone (the discharge limited zone) or a C zone (the discharge prohibited zone), then an internal combustion engine ENG is made to continue driving, and charging of an electric storage device BATT is performed. Thereafter, when an idling stop release request is generated, in the case of the B zone, a vehicle is started by driving an electric motor MG, while continuing driving of the internal combustion engine ENG and setting a first clutch C1 to an interrupted state. On the other hand, in the case of the C zone, the vehicle is started by continuing driving the internal combustion engine ENG, and setting the first clutch C1 to the connected state.

Abstract: A control unit 2 includes a standard control map Map1 in which an EV driving permitting region is set according to the SOC of a battery 3 and a substitute control map Map2 in which the EV driving permitting region of the standard control map Map1 is narrowed, whereby when an air conditioning compressor 112A, 112B is actuated to operate, the driving is controlled by selecting the substitute control map Map2 to be referred to in place of the standard control map Map1.

Abstract: A power transmission apparatus 1 for a hybrid vehicle having an engine 6 and a motor 7 is provided with a planetary gear mechanism 31 configured to differentially rotate a sun gear 32, a carrier 36, and a ring gear 35. The sun gear 32 is connected to one of a first input shaft and a second input shaft and to the motor 7. The ring gear 35 is connected to a lock mechanism capable of stopping a rotation state. The carrier 36 is configured to transmit power to a counter shaft 14. The other of the first input shaft and the second input shaft is configured to transmit power to the counter shaft 14 without passing through the planetary gear mechanism 31.

Abstract: With a hybrid vehicle driven at extremely low speeds only by power from the electric motor, when a state-of-charge of the battery becomes equal to or smaller than a predetermined level or when a rotational speed required on the air conditioner compressor is less than a desired rotational speed, power from the internal combustion engine is transmitted to the output shaft by engaging the first engaging and disengaging mechanism, starting the internal combustion engine by power from the electric motor, and thereafter, engaging the first engaging and disengaging mechanism or the second engaging and disengaging mechanism between a fully applied state and a fully released state.

Abstract: A power output apparatus 1 to 1D including an engine 6, a motor 7, and a transmission 20 to 20D having two transmission shafts connected to the engine 6 is provided. The transmission includes a power combination mechanism 30 adapted so as to be able to rotate first to third elements differentially from each other. The first element is connected to any one of the two transmission shafts, the second element is connected to a driving shaft 9 or 9, and the third element is connected to the motor 7. The second element combines the power transmitted from the first element and the power transmitted from the third element, and transmits the combined power to the driving shaft 9 and 9. The other transmission shaft of the two transmission shafts transmits power to the driving shaft 9 or 9 without going via the power combination mechanism 30.

Abstract: While driving is performed by transmitting the power of an engine 6 through a gear of a second gear group, pre-shifting is performed to a gear of a first gear group, the gear being on a higher speed side than the gear of the second gear group, so that the rotation speed of a motor 7 does not exceed a predetermined rotation speed.

Abstract: A power transmission apparatus 1 for a hybrid vehicle having an engine 6 and a motor 7 is provided with a planetary gear mechanism 31 configured to differentially rotate a sun gear 32, a carrier 36, and a ring gear 35. The sun gear 32 is connected to one of a first input shaft and a second input shaft and to the motor 7. The ring gear 35 is connected to a lock mechanism capable of stopping a rotation state. The carrier 36 is configured to transmit power to a counter shaft 14. The other of the first input shaft and the second input shaft is configured to transmit power to the counter shaft 14 without passing through the planetary gear mechanism 31.

Abstract: A transmission has a first transmission group which is capable of transmitting motive power from an electric motor and/or an engine to driven wheels and which is provided with a plurality of transmission stages having different transmission ratios and a second transmission group capable of transmitting motive power from the engine to the driven wheels. If the temperature of a battery detected by a temperature sensor is below a first predetermined temperature or a second predetermined temperature or higher, then an ECU sets the transmission stage of the first transmission group at an intermediate stage and carries out control so as to travel at an intermediate stage of the second transmission group which is adjacent to the intermediate stage of the first transmission group.

Abstract: The present invention provides a hybrid vehicle driving system which can implement sufficient lubrication while a vehicle is being driven. A hybrid vehicle driving system 1 of the invention includes a lubrication pump 122 which is connected to a first input shaft 11 and which is adapted to lubricate a transmission 20 and a lubricated state determination unit 55 which determines a lubricated state of the transmission 20. When the lubricated state determination unit 55 determines that lubrication is necessary, the first input shaft 11 is rotated by an electric motor 7 so as to drive the lubrication pump 122, or the first input shaft 11 is rotated by an internal combustion engine 6 by engaging a first engaging and disengaging unit to thereby drive the lubrication pump 122.

Abstract: A power transmitting device 1 having: first and second main input shafts 11, 12 connected to engine 2 via clutches C1 and C2; idler shaft 17 parallel to the first main input shaft 11; a sub input shaft 13 parallel to the idler shaft 14; gears 17a and 17b of an output shaft 17 allowing gears 18a and 18b disposed on the first input shaft 11 and selectively connected to the output shaft 17, and gears 19a and 19b able to connect the sub input shaft 13 and the output shaft 17, to engage with gears 17a and 17b in common; and a differential rotation mechanism 9, allowing a sun gear 9s on the first input shaft 11 and an electric motor 3, a carrier 9c connected to gear 18a, and a ring gear 9r connected to a synchronizer SL to rotate differentially with respect to one another.

Abstract: A control unit 2 includes a standard control map Map1 in which an EV driving permitting region is set according to the SOC of a battery 3 and a substitute control map Map2 in which the EV driving permitting region of the standard control map Map1 is narrowed, whereby when an air conditioning compressor 112A, 112B is actuated to operate, the driving is controlled by selecting the substitute control map Map2 to be referred to in place of the standard control map Map1.

Abstract: At least one of a state and a storage amount of a battery is detected, and a battery output that can be outputted by the battery is calculated on the basis of it. A state of an electric motor is detected, and at least one of electric motor torque and electric motor output that can be outputted from the electric motor and maximal torque of the electric motor are calculated on the basis of it. A state of an engine is detected, and engine starting torque required to start the engine is calculated on the basis of it. An EV range in which the engine is cut off to be capable of driving with only the electric motor is set up on the basis of the calculated battery output, at least one of the calculated electric motor torque and electric motor output, and the calculated engine starting torque.

Abstract: In a twin-clutch type transmission in which an electric motor is connected to one of transmission shafts, when downshifting is executed during EV running, a braking force is ensured by controlling in a cooperative fashion a regenerative brake and wheel brakes B1 to B4 so as to compensate for the loss of braking force during downshifting by the wheel brakes B1 to B4 or a braking force is ensured by making use of engine braking effects.

Abstract: With a hybrid vehicle driven at extremely low speeds only by power from the electric motor, when a state-of-charge of the battery becomes equal to or smaller than a predetermined level or when a rotational speed required on the air conditioner compressor is less than a desired rotational speed, power from the internal combustion engine is transmitted to the output shaft by engaging the first engaging and disengaging mechanism, starting the internal combustion engine by power from the electric motor, and thereafter, engaging the first engaging and disengaging mechanism or the second engaging and disengaging mechanism between a fully applied state and a fully released state.

Abstract: The present invention provides a hybrid vehicle driving system which can implement sufficient lubrication while a vehicle is being driven. A hybrid vehicle driving system 1 of the invention includes a lubrication pump 122 which is connected to a first input shaft 11 and which is adapted to lubricate a transmission 20 and a lubricated state determination unit 55 which determines a lubricated state of the transmission 20. When the lubricated state determination unit 55 determines that lubrication is necessary, the first input shaft 11 is rotated by an electric motor 7 so as to drive the lubrication pump 122, or the first input shaft 11 is rotated by an internal combustion engine 6 by engaging a first engaging and disengaging unit to thereby drive the lubrication pump 122.

Abstract: When an idling stop request is generated, in the case of a B zone (the discharge limited zone) or a C zone (the discharge prohibited zone), then an internal combustion engine ENG is made to continue driving, and charging of an electric storage device BATT is performed. Thereafter, when an idling stop release request is generated, in the case of the B zone, a vehicle is started by driving an electric motor MG, while continuing driving of the internal combustion engine ENG and setting a first clutch C1 to an interrupted state. On the other hand, in the case of the C zone, the vehicle is started by continuing driving the internal combustion engine ENG, and setting the first clutch C1 to the connected state.

Abstract: ECU controls an electric motor, in the state where the connection between an engine and the electric motor is disconnected and the engine is stopped, to be a creep speed corresponding to a creep rotational speed set larger than a rotational speed capable of starting the engine by a predetermined rotational speed. Further, ECU controls to start the engine by the motive power of the electric motor by connecting the engine and the electric motor, if an engine starting condition is satisfied and at the rotational speed of the electric motor capable of starting the engine or more during creep running.

Abstract: A transmission has a first transmission group which is capable of transmitting motive power from an electric motor and/or an engine to driven wheels and which is provided with a plurality of transmission stages having different transmission ratios and a second transmission group capable of transmitting motive power from the engine to the driven wheels. If the temperature of a battery detected by a temperature sensor is below a first predetermined temperature or a second predetermined temperature or higher, then an ECU sets the transmission stage of the first transmission group at an intermediate stage and carries out control so as to travel at an intermediate stage of the second transmission group which is adjacent to the intermediate stage of the first transmission group.

Abstract: In a twin-clutch type transmission in which an electric motor is connected to one of transmission shafts, when downshifting is executed during EV running, a braking force is ensured by controlling in a cooperative fashion a regenerative brake and wheel brakes B1 to B4 so as to compensate for the loss of braking force during downshifting by the wheel brakes B1 to B4 or a braking force is ensured by making use of engine braking effects.