Abstract: [Subject] In a hybrid drive power apparatus, loss of drive power caused by drag torque of a friction clutch is decreased to reduce fuel consumption rate.

Abstract: In a hybrid power system, when a change-speed stage selected in one of gear-shift mechanisms for first and second drive trains is switched over to another change-speed stage in the other gear-shift mechanism, deceleration in rotation speed of an engine detected by a rotation speed sensor is compared with a preset upper limit. When the deceleration in rotation speed of the engine exceeds the upper limit, the motor-generator in drive connection with an input shaft of the second drive train is activated as an electric motor to cause load torque canceling or offsetting input torque applied to the input shaft of the other gear-shift mechanism from the engine, and engagement of the change-speed stage in the other gear-shift mechanism is released after the occurrence of the load torque.

Abstract: In an automatic dual-clutch transmission, a lowest speed driven gear, other driven gears and a reverse gear are provided on a first output shaft to be freely rotatable. A 2nd speed driven gear and a highest speed driven gear are provided on a second output shaft to be freely rotatable. Further, the 2nd speed driven gear is provided with a large-diameter gear meshing with a 2nd speed drive gear and a small-diameter gear provided bodily with the large-diameter gear, being fewer in tooth number and smaller in diameter than the large-diameter gear, and meshing with the reverse gear. Thus, the automatic dual-clutch transmission is reduced in diameter by not having an output shaft dedicated to the reverse gear and is able to set the gear ratio for reverse to be large.

Abstract: A hybrid-type power transmission in which an internal combustion engine and an electric rotating machine are used as a source of power for driving an output shaft through a change-speed mechanism. In the hybrid power transmission, the operation of the electric rotating machine is controlled in such a manner that the rotation speed of a rotor-side rotary member is synchronized with the rotation speed of an input-side or output-side rotary member when the rotation speed of the rotor-side rotary member becomes higher in a predetermined difference than the rotation speed of the input-side or output-side rotary member in shifting operation of a sleeve coupled with the rotor-side rotary member.

Abstract: In an automatic dual-clutch transmission, a lowest speed driven gear, other driven gears and a reverse gear are provided on a first output shaft to be freely rotatable. A 2nd speed driven gear and a highest speed driven gear are provided on a second output shaft to be freely rotatable. Further, the 2nd speed driven gear is provided with a large-diameter gear meshing with a 2nd speed drive gear and a small-diameter gear provided bodily with the large-diameter gear, being fewer in tooth number and smaller in diameter than the large-diameter gear, and meshing with the reverse gear. Thus, the automatic dual-clutch transmission is reduced in diameter by not having an output shaft dedicated to the reverse gear and is able to set the gear ratio for reverse to be large.

Abstract: [Subject] In a hybrid drive power apparatus, distortional oscillation of power transfer shafts caused by fluctuation in output torque of an engine is restrained to prevent the occurrence of unpleasant noises such as hitting noise of gear teeth, harsh noise in the vehicle body and the like.

Abstract: In a hybrid power system, when a change-speed stage selected in one of gear-shift mechanisms for first and second drive trains is switched over to another change-speed stage in the other gear-shift mechanism, deceleration in rotation speed of an engine detected by a rotation speed sensor is compared with a preset upper limit. When the deceleration in rotation speed of the engine exceeds the upper limit, the motor-generator in drive connection with an input shaft of the second drive train is activated as an electric motor to cause load torque canceling or offsetting input torque applied to the input shaft of the other gear-shift mechanism from the engine, and engagement of the change-speed stage in the other gear-shift mechanism is released after the occurrence of the load torque.

Abstract: [Subject]To rapidly rise a temperature of lubricant in a transmission housing of a hybrid drive power apparatus when the lubricant temperature is lower than a preset lower limit value.

Abstract: [Subject] In a hybrid drive power apparatus, loss of drive power caused by drag torque of a friction clutch is decreased to reduce fuel consumption rate.

Abstract: A transmission for a vehicle is provided with a plurality of gears supported on shaft members rotatably supported in a case to extend in an axial direction, first and second large-diameter gears soaked at lower parts thereof in lubrication oil stored in a lubrication oil storage region formed at a lower portion of the case for scooping upward lubrication oil during rotations, and first and second receivers arranged to extend in the axial direction of the shaft members for collecting the upwardly scooped lubrication oils to supply the same to parts to be lubricated. The first and large-diameter gears are arranged respectively on one and the other end sides of the plurality of gears in the axial direction. Other gears of the plurality of gears except for the first and second large-diameter gears are formed to diameters that hardly agitate the lubrication oil in the lubrication oil storage region.

Abstract: A gear-type transmission apparatus includes a first input shaft, a second input shaft provided coaxially and rotatably relative to the first input shaft, a first counter shaft and a second counter shaft arranged in parallel to the first and the second input shafts, an output shaft, a dual clutch mechanism having a first clutch and a second clutch for transmitting a rotation of a driving shaft driven by a power source to the first and the second input shafts, a first gear change mechanism, a second gear change mechanism, a reverse gear set having a reverse shift stage driving gear, a reverse shift stage intermediate gear, and a reverse shift stage driven gear, and a switching clutch having a reverse shift stage engaging member for establishing/interrupting a torque transmission from the driving shaft to the output shaft via the reverse shift set.

Abstract: A hybrid-type power transmission in which an internal combustion engine and an electric rotating machine are used as a source of power for driving an output shaft through a change-speed mechanism. In the hybrid power transmission, the operation of the electric rotating machine is controlled in such a manner that the rotation speed of a rotor-side rotary member is synchronized with the rotation speed of an input-side or output-side rotary member when the rotation speed of the rotor-side rotary member becomes higher in a predetermined difference than the rotation speed of the input-side or output-side rotary member in shifting operation of a sleeve coupled with the rotor-side rotary member.

Abstract: A dual clutch transmission apparatus includes a first input shaft, a second input shaft arranged coaxially with the first input shaft and freely rotatable, a first counter shaft and a second counter shaft arranged in parallel with the first and the second input shafts, a dual clutch including a first clutch and a second clutch, the first and the second clutches transmitting rotational torque from a power source to the first and the second input shafts respectively, a first gear change mechanism provided between the first and the second input shafts and the first counter shaft, a second gear change mechanism provided between the first and the second input shafts and the second counter shaft and an output shaft connected to the first and the second counter shafts via a first reduction gear train and a second reduction gear.

Abstract: A dual clutch type automated transmission apparatus includes first and second input shafts, an output shaft, a dual clutch mechanism having a first clutch actuator operating a first clutch portion for establishing/interrupting a first torque transmitting path and a second clutch actuator operating a second clutch portion for establishing/interrupting a second torque transmitting path, plural first gear trains, plural first connecting portions selectively connecting/disconnecting the first and second input shafts to/from the output shaft via one of the first gear trains, a second gear train provided between the first input shaft and the output shaft, and a second connecting portion provided at the second gear train and connected to the second clutch actuator. The second clutch actuator operates the second connecting portion to connect/disconnect the first input shaft to/from the output shaft via the second gear train while operating the second clutch portion to interrupt the second torque transmitting path.

Abstract: A vehicle transmission apparatus includes an engine generating a driving force; a transmission having, therein, at least one input shaft being connectable to the engine and an output shaft connected to a drive wheel, the transmission being capable of establishing, therein, one of plural shift stages in response to a vehicle driving condition; at least one clutch mechanism for establishing and interrupting transmission of a driving force of the engine to the transmission, the at least one clutch mechanism being capable of being connected to the at least one input shaft; and a braking means for applying a braking force to the engine.

Abstract: A gear-type transmission apparatus includes a first input shaft, a second input shaft provided coaxially and rotatably relative to the first input shaft, a first counter shaft and a second counter shaft arranged in parallel to the first and the second input shafts, an output shaft, a dual clutch mechanism having a first clutch and a second clutch for transmitting a rotation of a driving shaft driven by a power source to the first and the second input shafts, a first gear change mechanism, a second gear change mechanism, a reverse gear set having a reverse shift stage driving gear, a reverse shift stage intermediate gear, and a reverse shift stage driven gear, and a switching clutch having a reverse shift stage engaging member for establishing/interrupting a torque transmission from the driving shaft to the output shaft via the reverse shift set.

Abstract: A shifting apparatus for a transmission includes a shift-and-select shaft, a retaining member, at least one shifting member rotatably and slidably supported by the shaft to be in contact with an axial end of the retaining member, plural driving pins, plural neutral interlock grooves formed at outer plan surfaces of the retaining member to be slidably engaged with the driving pins, plural shifting interlock grooves, a stepped recessed-portion formed at one of outer plan surfaces of the shifting member, and plural non-shifting grooves formed at the other outer plan surfaces of the shifting member. The shifting member is rotated and detected in a selected position relative to the retaining member. Then, the retaining member and the shifting member are reciprocated so that one of the driving pins makes a contact with the shifting inclined surface of the shifting member and the fork shaft is reciprocated.

Abstract: A synchronizer mechanism for a transmission includes a clutch hub fixed to a transmission shaft, a sleeve fixed to the transmission shaft and splined to the clutch hub, a speed change gear including a movable conical surface, a synchronizer ring supported by the sleeve, a synchronous torque assisting member including a fixed conical surface, and a biasing member biasing the speed change gear to the clutch hub. The speed change gear is rotatably provided and axially movably mounted between the clutch hub and the synchronous torque assisting member. The movable conical surface and the fixed conical surface are mutually engageable. By axially actuating the synchronizer ring, a conical hole formed at the synchronizer ring is engaged with a conical surface formed at the speed change gear. Then the speed change gear moves against the biasing member and the movable conical surface and the fixed conical surface are mutually engaged.

Abstract: A dual clutch transmission apparatus includes a first input shaft, a second input shaft arranged coaxially with the first input shaft and freely rotatable, a first counter shaft and a second counter shaft arranged in parallel with the first and the second input shafts, a dual clutch including a first clutch and a second clutch, the first and the second clutches transmitting rotational torque from a power source to the first and the second input shafts respectively, a first gear change mechanism provided between the first and the second input shafts and the first counter shaft, a second gear change mechanism provided between the first and the second input shafts and the second counter shaft and an output shaft connected to the first and the second counter shafts via a first reduction gear train and a second reduction gear.

Abstract: A vehicle transmission apparatus includes an engine generating a driving force; a transmission having, therein, at least one input shaft being connectable to the engine and an output shaft connected to a drive wheel, the transmission being capable of establishing, therein, one of plural shift stages in response to a vehicle driving condition; at least one clutch mechanism for establishing and interrupting transmission of a driving force of the engine to the transmission, the at least one clutch mechanism being capable of being connected to the at least one input shaft; and a braking means for applying a braking force to the engine.