Abstract: A vehicle power transmission device equipped with a crank type transmission unit is provided in which since a first sprocket provided on an input shaft upstream portion and a second sprocket provided on an output shaft downstream portion are connected by an endless chain, and a dog clutch is disposed between the input shaft main body portion and the input shaft upstream portion, when the input shaft main body portion is seized and becomes non-rotatable, the dog clutch is disengaged so as to detach the input shaft upstream portion from the input shaft main body portion, and the driving force of an engine is transmitted to the output shaft downstream portion via the input shaft upstream portion, the first sprocket, the endless chain and the second sprocket, thereby enabling the vehicle to travel in the minimum necessary way.

Abstract: A vehicle power transmission device equipped with a crank type transmission unit is provided in which since a first sprocket provided on an input shaft upstream portion and a second sprocket provided on an output shaft downstream portion are connected by an endless chain, and a dog clutch is disposed between the input shaft main body portion and the input shaft upstream portion, when the input shaft main body portion is seized and becomes non-rotatable, the dog clutch is disengaged so as to detach the input shaft upstream portion from the input shaft main body portion, and the driving force of an engine is transmitted to the output shaft downstream portion via the input shaft upstream portion, the first sprocket, the endless chain and the second sprocket, thereby enabling the vehicle to travel in the minimum necessary way.

Abstract: An output shaft is formed from an output shaft main body portion connected to a transmission unit. An output shaft downstream portion arranged further on the downstream side in the power transmission direction than the output shaft main body portion. A dog clutch is disposed between the output shaft main body portion and the output shaft downstream portion. When the output shaft main body portion is seized and cannot rotate, it is possible, by disengaging the dog clutch to detach the output shaft downstream portion from the output shaft main body portion, to prevent a driven wheel from being locked by the seized output shaft main body portion.

Abstract: One-way clutches OWC1 and OWC2 are provided on output sides of transmissions TM1 and TM2, and the transmissions TM1 and TM2 mechanically lock when the output member 121 of the one-way clutches OWC1 and OWC2 is reversely rotated to the backward side. Clutch mechanisms CL1 and CL2 are interposed between the output member 121 and a driving target member 11 connected to a driving wheel 2. According to uphill start conditions, a controller 5 makes any one of the clutch mechanisms CL1 and CL2 enter ON state when a vehicle-backward-movement prevention control is determined to be required and the controller 5 makes the clutch mechanisms CL1 and CL2 enter OFF state when the vehicle-backward-movement prevention control is determined to be not required. Thus, it is possible to provide a vehicle driving system capable of performing a hill hold assist function with a simple control.

Abstract: A first engine ENG1, transmission TM1, one-way clutch OWC1, driving target member 11 connected to an output member 121 of the one-way clutch, main motor/generator MG1 connected to the member 11, sub motor/generator MG2 connected to an output shaft S1 of the engine ENG1, battery 8, and controller 5. The controller 5 performs EV running, engine running, and series running where power generated by a sub motor/generator MG2 using the power of the first engine ENG1 is supplied to the main motor/generator MG1. Series running is carried out between EV running and the engine running when switching from EV running to engine running is carried out. A rotational speed of the engine and/or a transmission ratio of the transmission are/is controlled so that the rotational speed input to the input member is less than the rotational speed of the output member 121 during the series running control.

Abstract: There is provided a drive system for a vehicle. The system includes: an internal combustion engine (ENG); a transmission mechanism (TM) a one-way clutch (OWC); a rotated driving member (11); an electric motor (MG1) that rotates the output shaft of the internal combustion engine; an electric motor generator (MG2) that transmits the rotational power to the rotated driving member and performs regenerative operation by receiving the rotational power output from the rotated driving member; and a controller (50) configured to cut off a fuel supply to the internal combustion engine and control the electric motor to rotate the output shaft of the internal combustion engine while the electric motor generator performs the regenerative operation.

Abstract: First and second engines ENG1 and ENG2; first and second transmissions TM1 and TM2 shifting the output of the first and second engines; first and second one-way clutches OWC1 and OWC2 that are provided in each output portion of the first and second transmissions; a driving target member 11 commonly connected to the output members 121 of the first and second one-way clutches via clutch mechanisms CL1 and CL2 and transmits the rotational power transmitted to the output members of the one-way clutches to the driving wheel 2; a main motor/generator MG1 connected to the member 11; a sub motor/generator MG2 connected to the output shaft S1 of the first engine; a battery 8 sending/receiving the electric power between both motor/generators; a synchronization mechanism 20 connecting/disconnecting the member 11 and the output shaft S2 of the second engine; and a controller 5.

Abstract: A vehicle driving system 1 includes a first and second engines ENG1 and ENG2, a first and second transmissions TM1 and TM2 with first and second one-way clutches OWC1 and OWC2 provided in each output portion respectively, a driving target member 11 connected to output members 121 of the one-way clutches OWC1 and OWC2 in common via clutch mechanisms CL1 and CL2, a main motor/generator MG1 connected to the driving target member 11, and a controller 5. The controller 5 disconnects the clutch mechanisms CL1 and CL2 when a vehicle runs rearward, the transmissions TM1 and TM2, and runs the vehicle rearward by a reverse rotation operation of the motor/generator MG1. The controller otherwise holds the clutch mechanisms CL1 and CL2 connected at the time of a start on an uphill and obtains a hill hold function using a rearward running blocking operation through the transmissions TM1 and TM2.

Abstract: An automobile driving system includes an engine and a transmission. The transmission includes a variable gear ratio mechanism and a gear ratio of the transmission can be set to infinity. A one-way clutch is provided at an output portion of the transmission. At a time of a engine stopping controller controlling to stop the engine, a transmission-and-control device uses inertia from the engine up to an input member of the one-way clutch as assisting force for driving operations of the variable gear ratio mechanism to change the gear ratio at the transmission to infinity or close to infinity, before the engine actually stops.

Abstract: One-way clutches OWC1 and OWC2 are provided on output sides of transmissions TM1 and TM2, and the transmissions TM1 and TM2 mechanically lock when the output member 121 of the one-way clutches OWC1 and OWC2 is reversely rotated to the backward side. Clutch mechanisms CL1 and CL2 are interposed between the output member 121 and a driving target member 11 connected to a driving wheel 2. According to uphill start conditions, a controller 5 makes any one of the clutch mechanisms CL 1 and CL2 enter ON state when a vehicle-backward-movement prevention control is determined to be required and the controller 5 makes the clutch mechanisms CL1 and CL2 enter OFF state when the vehicle-backward-movement prevention control is determined to be not required. Thus, it is possible to provide a vehicle driving system capable of performing a hill hold assist function with a simple control.

Abstract: A first engine ENG1, transmission TM1, one-way clutch OWC1, driving target member 11 connected to an output member 121 of the one-way clutch, main motor/generator MG1 connected to the member 11, sub motor/generator MG2 connected to an output shaft S1 of the engine ENG1, battery 8, and controller 5. The controller 5 performs EV running, engine running, and series running where power generated by a sub motor/generator MG2 using the power of the first engine ENG1 is supplied to the main motor/generator MG1. Series running is carried out between EV running and the engine running when switching from EV running to engine running is carried out. A rotational speed of the engine and/or a transmission ratio of the transmission are/is controlled so that the rotational speed input to the input member is less than the rotational speed of the output member 121 during the series running control.

Abstract: A vehicle driving system 1 includes a first and second engines ENG1 and ENG2, a first and second transmissions TM1 and TM2 with first and second one-way clutches OWC1 and OWC2 provided in each output portion respectively, a driving target member 11 connected to output members 121 of the one-way clutches OWC1 and OWC2 in common via clutch mechanisms CL1 and CL2, a main motor/generator MG1 connected to the driving target member 11, and a controller 5. The controller 5 disconnects the clutch mechanisms CL1 and CL2 when a vehicle runs rearward, the transmissions TM1 and TM2, and runs the vehicle rearward by a reverse rotation operation of the motor/generator MG1. The controller otherwise holds the clutch mechanisms CL1 and CL2 connected at the time of a start on an uphill and obtains a hill hold function using a rearward running blocking operation through the transmissions TM1 and TM2.

Abstract: First and second engines ENG1 and ENG2; first and second transmissions TM1 and TM2 shifting the output of the first and second engines; first and second one-way clutches OWC1 and OWC2 that are provided in each output portion of the first and second transmissions; a driving target member 11 commonly connected to the output members 121 of the first and second one-way clutches via clutch mechanisms CL1 and CL2 and transmits the rotational power transmitted to the output members of the one-way clutches to the driving wheel 2; a main motor/generator MG1 connected to the member 11; a sub motor/generator MG2 connected to the output shaft S1 of the first engine; a battery 8 sending/receiving the electric power between both motor/generators; a synchronization mechanism 20 connecting/disconnecting the member 11 and the output shaft S2 of the second engine; and a controller 5.

Abstract: There is provided a drive system for a vehicle. The system includes: an internal combustion engine (ENG); a transmission mechanism (TM) a one-way clutch (OWC); a rotated driving member (11); an electric motor (MG1) that rotates the output shaft of the internal combustion engine; an electric motor generator (MG2) that transmits the rotational power to the rotated driving member and performs regenerative operation by receiving the rotational power output from the rotated driving member; and a controller (50) configured to cut off a fuel supply to the internal combustion engine and control the electric motor to rotate the output shaft of the internal combustion engine while the electric motor generator performs the regenerative operation.

Abstract: An automobile driving system includes an engine and a transmission. The transmission includes a variable gear ratio mechanism and a gear ratio of the transmission can be set to infinity. A one-way clutch is provided at an output portion of the transmission. At a time of a engine stopping controller controlling to stop the engine, a transmission-and-control device uses inertia from the engine up to an input member of the one-way clutch as assisting force for driving operations of the variable gear ratio mechanism to change the gear ratio at the transmission to infinity or close to infinity, before the engine actually stops.