Abstract: A twin clutch transmission for a large horsepower vehicle having a compact size and a high transmission efficiency is obtained. In a twin clutch transmission, there are provided an input shaft, an odd-numbered level speed change mechanism 30, an even-numbered level speed change mechanism 60, a synchronizing speed change mechanism 100, and an output mechanism 90. The speed change mechanisms 30 and 60 include transmission gear trains 32 and 62, main clutches 34 and 64 for selectively transmitting the powers of the transmission gear trains 32 and 62 to the transmission shafts 40 and 70. The synchronizing speed change mechanism 100 includes synchronizing gear trains 110 and 120 for coupling the rotation of the odd-numbered level transmission shaft 32 with the rotation of the even-numbered level transmission shaft 62, and synchronizing clutches 112 and 122 for selecting coupling by this synchronizing gear train.

Abstract: A twin-clutch type hybrid transmission is configured to include an input shaft 10, an odd-numbered stage shift mechanism 30, an even-numbered stage shift mechanism 60, a motor power mechanism 20, and an output mechanism 90. The shift mechanisms 30 and 60 include transmission gear trains 32 and 62, and main clutches 34 and 64, respectively, the main clutches 34 and 64 for selectively transmitting the power of the transmission gear train 32 and the power of the transmission gear train 62 to transmission shafts 40 and 70, respectively. The shift mechanisms 30 and 60 also include shift gear trains 41, 43, 45, 47, 72, 74, 76, and 78 provided to the transmission shafts 40 and 70 to transmit rotation to the output mechanism 90, respectively, and mechanical clutches 50, 52, 80, and 82 for selectively engaging the corresponding shift gear trains and the transmission shafts 40 and 70, respectively. As a result, a compact twin-clutch type hybrid transmission having high transmission efficiency can be obtained.

Abstract: A twin clutch transmission for a large horsepower vehicle having a compact size and a high transmission efficiency is obtained. In a twin clutch transmission, there are provided an input shaft, an odd-numbered level speed change mechanism 30, an even-numbered level speed change mechanism 60, a synchronizing speed change mechanism 100, and an output mechanism 90. The speed change mechanisms 30 and 60 include transmission gear trains 32 and 62, main clutches 34 and 64 for selectively transmitting the powers of the transmission gear trains 32 and 62 to the transmission shafts 40 and 70. The synchronizing speed change mechanism 100 includes synchronizing gear trains 110 and 120 for coupling the rotation of the odd-numbered level transmission shaft 32 with the rotation of the even-numbered level transmission shaft 62, and synchronizing clutches 112 and 122 for selecting coupling by this synchronizing gear train.

Abstract: A twin-clutch type hybrid transmission is configured to include an input shaft 10, an odd-numbered stage shift mechanism 30, an even-numbered stage shift mechanism 60, a motor power mechanism 20, and an output mechanism 90. The shift mechanisms 30 and 60 include transmission gear trains 32 and 62, and main clutches 34 and 64, respectively, the main clutches 34 and 64 for selectively transmitting the power of the transmission gear train 32 and the power of the transmission gear train 62 to transmission shafts 40 and 70, respectively. The shift mechanisms 30 and 60 also include shift gear trains 41, 43, 45, 47, 72, 74, 76, and 78 provided to the transmission shafts 40 and 70 to transmit rotation to the output mechanism 90, respectively, and mechanical clutches 50, 52, 80, and 82 for selectively engaging the corresponding shift gear trains and the transmission shafts 40 and 70, respectively. As a result, a compact twin-clutch type hybrid transmission having high transmission efficiency can be obtained.

Abstract: A transmission system in a vehicle using a motor to transmit power assists acceleration by generating auxiliary engine power during acceleration in addition to gear changing by the motor. Where acceleration assistance is added, torque transition is conducted along a torque transmission route of dog clutch, second intermediate shaft, motor, first intermediate shaft, and gear position of first intermediate shaft before shifting so as to avoid the torque reduction in uncomfortable shocks and feelings to the driver due to torque reduction when shifting.

Abstract: A transmission system in a vehicle using a motor to transmit power assists acceleration by generating auxiliary engine power during acceleration in addition to gear changing by the motor. Where acceleration assistance is added, torque transition is conducted along a torque transmission route of dog clutch, second intermediate shaft, motor, first intermediate shaft, and gear position of first intermediate shaft before shifting so as to avoid the torque reduction in uncomfortable shocks and feelings to the driver due to torque reduction when shifting.

Abstract: In a shift system wherein the transfer of power is performed using a motor, the smaller the gear ratio difference is, the smaller can be made the motor output. However, the number of gears must be increased in order to reduce the gear ratio. As the number of gears increases, the problem of gear noise becomes more serious. It is necessary to prevent both an increase in the number of gears and an increase of the motor output.

Abstract: A transmission system in a vehicle using a motor to transmit power assists acceleration by generating auxiliary engine power during acceleration in addition to gear changing by the motor. Where acceleration assistance is added, torque transition is conducted along a torque transmission route of dog clutch, second intermediate shaft, motor, first intermediate shaft, and gear position of first intermediate shaft before shifting so as to avoid the torque reduction in uncomfortable shocks and feelings to the driver due to torque reduction when shifting.

Abstract: An automatic transmission, wherein an electric motor is between a couple of clutch shafts of twin-clutch type automatic transmission. The torque and speed of the electric motor establishes a smooth and efficient gear shifting control, and enables a creep control, idling stop starting control, R-to-D, and D-to-R selecting control. As the friction control of the clutch is not performed, smooth gear shift work can be realized. The same control scheme allows creep control, idling stop starting control, R-to-D, and D-to-R selecting control to be enabled, which leads to such an effect that the life is extended without the clutch being worn away.

Abstract: To enable compactness by lowering the connecting force of dog clutch so as to decrease the energy consumption and reduce the size of a system. A method of changing gears of automobile which moves the dog clutch in the axial direction at the time of gear change, while applying weak periodic torque vibration between the gear of the dog clutch and change gear of the gear shifter, and disconnects the two gears and, after the gear of the dog clutch and change gear of the gear shifter have been disconnected, also moves the dog clutch in the axial direction, while applying weak periodic rotating speed vibration between the gear of the dog clutch and another change gear of the gear shifter, and connects the two gears.

Abstract: An automotive shift change control system and automatic transmission system is provided to give passengers a comfortable feeling of shift changing or of driving. A transmission connects a vehicle-driving engine, an electrical rotary machine, and axles via a differential gearbox, transmits the power of the engine to the axles via the electrical rotary machine during a shift change, and conducts the shift change. The automotive shift change control unit that controls the change gear ratio of the transmission includes a driving force controller to control the driving force of the electrical rotary machine, a shift-changing speed controller to send a driving force command from the electrical rotary machine to the driving force controller, and a target shift-changing speed changeover device to output the target shift-changing speed that becomes a target value of the shift-changing speed controlled by the shift-changing speed controller.

Abstract: The object of the invention is to provide a less expensive active transmission control system for an automobile, capable of disconnecting an engine, without increasing the number of dog clutches. In an active shift transmission, a second intermediate shaft is provided between a transmission input shaft connected with an engine and a transmission output shaft, and the transmission ratio is determined by the product of gear ratios of two sets of transmission gears. Further, a differential gear box is connected between both intermediate shafts and a motor is connected to the third shat of this differential gear box, so that the engine torque is borne by the motor on a temporary basis, whereby active transmission is performed. When the transmission gear of the input shaft is released, the engine rotation loss at the time of regenerative braking can be eliminated by disconnecting the engine.

Abstract: The object of the invention is to provide a less expensive active transmission control system for an automobile, capable of disconnecting an engine, without increasing the number of dog clutches. In an active shift transmission, a second intermediate shaft is provided between a transmission input shaft connected with an engine and a transmission output shaft, and the transmission ratio is determined by the product of gear ratios of two sets of transmission gears. Further, a differential gear box is connected between both intermediate shafts and a motor is connected to the third shat of this differential gear box, so that the engine torque is borne by the motor on a temporary basis, whereby active transmission is performed. When the transmission gear of the input shaft is released, the engine rotation loss at the time of regenerative braking can be eliminated by disconnecting the engine.

Abstract: A transmission system in a vehicle using a motor to transmit power can assist acceleration by generating auxiliary engine power during acceleration in addition to gear changing by the motor. In this system, however, the acceleration assistance is interrupted in gear changing since the motor power is used to drive a vehicle when a gear-shifting is made. In a conventional geared transmission mechanism, the torque decreases after a gear change for up-shifting is made. If acceleration assistance is added, the torque reduction in shifting becomes greater and gives uncomfortable shocks and feelings to the driver. Torque transition is conducted along a torque transmission route of dog clutch, second intermediate shaft, motor, first intermediate shaft, and gear position of first intermediate shaft before shifting.

Abstract: To enable compactness by lowering the connecting force of dog clutch so as to decrease the energy consumption and reduce the size of a system. A method of changing gears of automobile which moves the dog clutch in the axial direction at the time of gear change, while applying weak periodic torque vibration between the gear of the dog clutch and change gear of the gear shifter, and disconnects the two gears and, after the gear of the dog clutch and change gear of the gear shifter have been disconnected, also moves the dog clutch in the axial direction, while applying weak periodic rotating speed vibration between the gear of the dog clutch and another change gear of the gear shifter, and connects the two gears.

Abstract: A transmission, a vehicle control unit equipped with the transmission, or control method thereof comprising two input shafts, output shaft, two input clutches that are engaged and disengaged to transmit rotational force from drive source to the two input shafts, multiple gear sets which transmit drive force at respective gear ratios between the two input shafts and output shaft, multiple shifting clutches to select a gear set which transmits the drive force among the multiple gear sets, and friction clutch which transmits drive force between two input shafts. Thereby, maximum vehicle drivability and riding comfort requested by drivers are provided without any complicated control and adjustment such as a dual friction clutch transmission.

Abstract: The object of the invention is to provide a less expensive active transmission control system for an automobile, capable of disconnecting an engine, without increasing the number of dog clutches. In an active shift transmission, a second intermediate shaft is provided between a transmission input shaft connected with an engine and a transmission output shaft, and the transmission ratio is determined by the product of gear ratios of two sets of transmission gears. Further, a differential gear box is connected between both intermediate shafts and a motor is connected to the third shaft of this differential gear box, so that the engine torque is borne by the motor on a temporary basis, whereby active transmission is performed. When the transmission gear of the input shaft is released, the engine rotation loss at the time of regenerative braking can be eliminated by disconnecting the engine.

Abstract: In a shift system wherein the transfer of power is performed using a motor, the smaller the gear ratio difference is, the smaller can be made the motor output. However, the number of gears must be increased in order to reduce the gear ratio. As the number of gears increases, the problem of gear noise becomes more serious. It is necessary to prevent both an increase in the number of gears and an increase of the motor output.

Abstract: To enable compactness by lowering the connecting force of dog clutch so as to decrease the energy consumption and reduce the size of a system. A method of changing gears of automobile which moves the dog clutch in the axial direction at the time of gear change, while applying weak periodic torque vibration between the gear of the dog clutch and change gear of the gear shifter, and disconnects the two gears and, after the gear of the dog clutch and change gear of the gear shifter have been disconnected, also moves the dog clutch in the axial direction, while applying weak periodic rotating speed vibration between the gear of the dog clutch and another change gear of the gear shifter, and connects the two gears.

Abstract: In a control unit for an automobile power transmission apparatus which includes a gear-type transmission and several of the motors are controlled so as to suppress thrust or push-up on the torque of the output shaft of the transmission due to inertia torque or to suppress draw or pull-in on the output shaft.