Abstract: A fluid coupling comprising a pump having an annular pump shell with an annular core ring mounted on a pump hub and a plurality of impellers radially arranged in the pump shell, and a turbine arranged facing the pump and having an annular turbine shell with an annular core ring mounted on a turbine hub that can rotate relative to the pump hub and a plurality of runners radially arranged in the turbine shell, wherein the turbine shell is so constituted to slide on the turbine hub in the axial direction, and provision is made of a resilient urging means for pushing the turbine toward the side of the pump.

Abstract: A shift actuator for a transmission, comprising an operation rod that engages with an operation member coupled to the shift lever of the transmission, a magnetic moving means arranged on the outer peripheral surface of said operation rod, a cylindrical fixed yoke surrounding said magnetic moving means, and a pair of coils arranged side by side in the axial direction inside said fixed yoke, wherein magnetic members are arranged on both sides of said pair of coils.

Abstract: A gear change device comprises a select actuator for operating the shift lever of a transmission in the direction of selection and a shift actuator for operating the shift lever in the direction of shift. The select actuator has a casing, a shift lever support member that is arranged in the casing so as to slide in the axial direction and supports the shift lever, a magnetic moving means arranged on the outer periphery of the shift lever support member, a cylindrical fixed yoke arranged surrounding the magnetic moving means, a pair of coils arranged inside the fixed yoke, and a select position-limiting means for limiting the operation position of the shift lever support member according to a thrust produced by the shift lever support member in proportion to the amount of electric power fed to the pair of coils, and further, magnetic members are arranged on both sides of the pair of coils.

Abstract: A fluid coupling comprising a pump having a pump shell and a plurality of impellers arranged in the pump shell, a turbine having a turbine shell arranged to be opposed to the pump and a plurality of runners arranged in the turbine shell, and a baffle mechanism arranged in a fluid circulation passage formed by the pump shell and the turbine shell, wherein the baffle mechanism comprises a first baffle plate having a plurality of first openings, a second baffle plate that has a plurality of second openings and is disposed in such a manner as to overlap with the first baffle plate and as to be allowed to rotate relative thereto, and a centrifugal operation means for turning the second baffle plate relative to the first baffle plate in response to the rotational speed of the first baffle plate.

Abstract: In a fluid coupling with a baffle plate protruding on the side of an inner peripheral surface of a circulating circuit, a clutch chamber is defined between a back of a turbine impeller and a side cover covering the back of the impeller, to communicate with an outer periphery of the circulating circuit. The clutch chamber is divided by a clutch piston into an inner chamber portion on the side of the turbine impeller and an outer chamber portion on the side of the side cover. The clutch piston is axially movably connected to the turbine impeller, thereby constituting a lock-up clutch, so that a first oil passage leading to the outer chamber portion and a second oil passage leading to an inner periphery of the circulating circuit are put into alternate communication with a discharge portion of an oil pump and with an oil reservoir in a switched manner.

Abstract: A fluid coupling comprising:

Abstract: A shift-assisting device for a transmission that is equipped with an electric motor for operating a shifting mechanism in the same direction as the direction in which a speed-change lever is shifted, the shifting mechanism being coupled to the speed-change lever and actuating the synchronizing mechanism of the transmission. The shift-assisting device includes a controller for controlling the electric motor. The controller judges whether the gear is to be disengaged or engaged based on the shifting direction of the speed-change lever and on the shift stroke position of the shifting mechanism, detects the shifting operation speed, obtains an average shifting operation speed in the gear-disengaging operation or the gear-engaging operation, and determines the electric power for driving the electric motor based on the average shifting operation speed.

Abstract: A gear change device comprises a select actuator for operating the shift lever of a transmission in the direction of selection and a shift actuator for operating the shift lever in the direction of shift. The select actuator has a casing, a shift lever support member that is arranged in the casing so as to slide in the axial direction and supports the shift lever, a magnetic moving means arranged on the outer periphery of the shift lever support member, a cylindrical fixed yoke arranged surrounding the magnetic moving means, a pair of coils arranged inside the fixed yoke, and a select position-limiting means for limiting the operation position of the shift lever support member according to a thrust produced by the shift lever support member in proportion to the amount of electric power fed to the pair of coils, and further, magnetic members are arranged on both sides of the pair of coils.

Abstract: A shift actuator for a transmission, comprising an operation rod that engages with an operation member coupled to the shift lever of the transmission, a magnetic moving means arranged on the outer peripheral surface of said operation rod, a cylindrical fixed yoke surrounding said magnetic moving means, and a pair of coils arranged side by side in the axial direction inside said fixed yoke, wherein magnetic members are arranged on both sides of said pair of coils.

Abstract: A shift actuator for a transmission for turning, in a direction of shift, a shift lever support mechanism mounting the shift lever of the transmission, wherein it comprises an operation lever coupled, at its intermediate portion, to said shift lever support mechanism, the first electromagnetic solenoid and the second electromagnetic solenoid which are each coupled to both ends of said operation lever so as to operate in the upward and downward directions; and an operation rod of said first electromagnetic solenoid is coupled to one end of said operation lever and an operation rod of said second electromagnetic solenoid is coupled to the other end of said operation lever.

Abstract: In a fluid coupling with a baffle plate protruding on the side of an inner peripheral surface of a circulating circuit, a clutch chamber is defined between a back of a turbine impeller and a side cover covering the back of the impeller, to communicate with an outer periphery of the circulating circuit. The clutch chamber is divided by a clutch piston into an inner chamber portion on the side of the turbine impeller and an outer chamber portion on the side of the side cover. The clutch piston is axially movably connected to the turbine impeller, thereby constituting a lock-up clutch, so that a first oil passage leading to the outer chamber portion and a second oil passage leading to an inner periphery of the circulating circuit are put into alternate communication with a discharge portion of an oil pump and with an oil reservoir in a switched manner.

Abstract: A vehicle driving device includes an engine installed in a vehicle, a fluid coupling actuated by the engine, and a friction clutch disposed between the fluid coupling and a transmission, the fluid coupling,having a lock-up clutch. Controlling means for controlling actuation of the lock-up clutch controls the lock-up clutch so as to be engaged during a gear change operation.

Abstract: A shift-assisting device for a transmission, that is equipped with an electric motor for operating a shifting mechanism in the direction same as the direction in which a speed-change lever is shifted, said shifting mechanism being coupled to said speed-change lever and actuating the synchronizing mechanism of the transmission, and comprises a controller for controlling the electric motor. The controller judges whether the gear is to be disengaged or engaged based on the shifting direction of the speed-change lever and on the shift stroke position of the shifting mechanism, detects the shifting operation speed and obtains an average shifting operation speed in the gear-disengaging operation or the gear-engaging operation, and operates the electric power for driving the electric motor based on the average shifting. operation speed.

Abstract: A fluid coupling comprising a pump including a pump shell having an annular core ring, and a plurality of impellers disposed in the pump shell; and a turbine including a turbine shell disposed opposite the pump and having an annular core ring, and a plurality of runners disposed in the turbine shell, wherein an annular baffle plate is mounted on an inner or outer periphery of the core ring of the pump shell or the core ring of the turbine.

Abstract: A shift-assisting device for a transmission comprising a drive means for operating a shifting mechanism in the same direction as the direction in which a speed-change lever is shifted, said shifting mechanism being coupled to said speed-change lever to operate a synchronizing mechanism of the transmission, wherein said drive means is a rotary solenoid.

Abstract: A driving device for vehicles, which comprises an engine mounted on a vehicle, a fluid coupling operated by said engine, and a friction clutch disposed between said fluid coupling and a transmission, wherein the friction clutch is composed of a multi-plate clutch.

Abstract: A power transmission arrangement for a vehicle adapted to transmit a drive power from an engine to a transmission via a wet multi-plate clutch. An electronic controller automatically disengages and engages the clutch normally, but does not engage the clutch if a transmission gear position other than a predetermined one is selected for starting of a vehicle. This prevents clutch engagement with an excessively high gear position. Otherwise, the clutch would overslip and be deteriorated soon. A torque converter may further be provided in tandem to the clutch so that the engine power is transmitted to the transmission through the clutch and torque converter.

Abstract: A clutch control arrangement designed to prevent intentional starting of a vehicle while a clutch-stroke-position learning is being performed. The clutch control arrangement includes a mechanism for automatically disengaging and engaging a clutch. The vehicle has a manual transmission of which gear position (shift position) is changed as a driver operates a shift lever. The clutch control arrangement further includes a learning unit for learning a stroke position of the clutch, and a unit for interrupting the operation of the learning unit when the shift lever is operated toward a transmission gear engaged position during the clutch-stroke-position learning. Preferably, the automatic disengagement and engagement mechanism automatically disengages or engages the clutch depending upon a gear engaged condition of the manual transmission after interrupting the clutch-stroke-position learning.

Abstract: A clutch connection/disconnection system which causes a friction clutch to slip appropriately when the clutch is automatically disconnected and connected. An engine is controlled according an accelerate command signal. During automatic clutch connection, the accelerate command signal approaches an actual accelerator pedal position signal. An approaching speed of the accelerate command signal is stepwise changed based on comparison between a particular value and a threshold value. The "particular value" is a differential value of a difference between an engine rotational speed and clutch rotational speed. When the clutch is slipping, the engine rotational speed is controlled to rise gently so that overslipping of the clutch is prevented.

Abstract: The clutch disconnection/connection device of the present invention includes manual disconnection/connection devices for manually disconnecting/connecting a clutch by operation of a clutch pedal, and automatic disconnection/connection devices for automatically disconnecting/connecting the clutch by controllably supplying air pressure to or discharging the air pressure from a clutch booster.