Abstract: A multiple speed transmission includes an input and output; a first, second, third and fourth planetary gear sets, each gear set including a sun gear, a ring gear, a carrier, and pinions supported on the carrier and meshing with the sun gear and the ring gear; a first epicyclic gearing assembly including the first gear set, the second gear set, a first clutch, a first brake, a second brake, and first, second, third and fourth rotating members, said first clutch being operable to couple said first rotating member to the input, said first brake being operable to hold said fourth rotating member against rotation, and said second brake being operable to hold said second rotating member against rotation; and a second epicyclic gearing assembly including the third gear set, the fourth gear set, a second clutch, a third clutch, a third brake, and fifth, sixth, seventh and eighth rotating members, the third rotating member being secured to the eighth rotating member, said second control clutch being operable to coupl

Abstract: To reduce the axial size of a twin-clutch device including first and second clutch actuating mechanisms arranged in parallel along the axes of first and second driven shafts that are coaxial. A first clutch disconnection/connection control mechanism is provided for switching disconnection/connection of the first clutch actuating mechanism. A second clutch disconnection/connection control mechanism is provided for switching disconnection/connection of the second clutch actuating mechanism. A second clutch disconnection/connection control mechanism is arranged between first and second clutch inners so that at least a part of the second clutch disconnection/connection control mechanism is accommodated in at least one of first and second cylinder portions.

Abstract: A modification to the manual valve of an automatic transmission is provided which improves the shift quality of the automatic transmission when the transmission is shifted from a drive gear to either Park or Neutral. More particularly, the invention provides a control orifice which regulates the release of hydraulic fluid from one or more clutch circuits such that pressure to one or more clutches is gradually released. The gradual release of pressure form the one or more clutches provides an improved shift quality. In alternate embodiments, the present invention provides a further modification to an automatic transmission which allows the control orifice to be circumvented in situations where a rapid swap of pressure from on clutch control solenoid to another is required.

Abstract: To provide a transmission capable of: reducing horsepower loss by reducing the amount of lubricating oil for a power transmission system including speed gears when the present speed gear is a specified gear of the speed gears; and securing the lubricating oil amount for the transmission system during a shift performed when the present gear is the specified speed gear. The transmission includes: the power transmission system; a lubricating oil amount reducing mechanism for reducing the lubricating oil amount supplied to the power transmission system when the present gear is the specified speed gear; and controller for determining a shift point vehicle speed pertaining to the specified speed gear based on a preset shift map, and activating the oil amount reducing mechanism, when a difference between the shift point vehicle speed and actual vehicle speed exceeds a first predetermined value and while the specified speed gear is the present gear.

Abstract: A multi-speed automatic transmission includes a first planetary gear set and a second planetary gear set, which are arranged in parallel on a first output shaft and a second output shaft, respectively. An input shaft is connectable with a first ring gear through first input drive and driven gears of the input shaft and the first output shaft, being connectable with a second pinion carrier through a second input drive and driven gears of the input shaft and the second output shaft. The first output shaft is connectable with a first pinion carrier, the second output shaft being connectable with a second ring gear. A second pinion carrier is fixable to a transmission case. The first and second sun gears are connectable with the input shaft through the first input drive and driven gears and through the intermediate gear, being fixable to the transmission case.

Abstract: A hybrid drive apparatus including an input shaft; a first motor and a second motor; a power distributing planetary gear; an intermediate transmission shaft; and a partition wall provided between a motor part including the first motor and the second motor and a transmission part including the transmission such that the intermediate shaft passes through the partition wall.

Abstract: A controlling method and system for a damper clutch of an automatic transmission control a damper clutch release condition according to a direct connection status of a damper clutch. The controlling method includes: determining whether the damper clutch is in a direct connection status in a power-on state or a direct connection status in a power-off state; detecting information of a vehicle if the damper clutch is in the direct connection status of the power-on or power-off state; determining whether a release condition of the damper clutch is satisfied; and releasing the damper clutch if the release condition of the damper clutch is satisfied.

Abstract: A hybrid-electric powertrain and control method for a vehicle having forward traction wheels and rearward traction wheels in an all-wheel drive configuration. An engine and an electric motor deliver power through delivery paths to the traction wheels. The power delivery paths may have multiple ratio gearing so that more power can be delivered mechanically to improve powertrain performance and to allow the electric motor size to be reduced. The powertrain may include a controller for automatically balancing power distribution to the forward and rearward traction wheels to avoid wheel slip.

Abstract: A hydraulic control apparatus for an automatic transmission is provided with a solenoid valve that outputs a signal pressure during a failure and does not output a signal pressure during normal operation and a first clutch apply relay valve that switches between a normal position (the right half position) and a fail position (the left half position) based on this signal pressure are provided. During a failure, fail-safe control is carried out by the first clutch apply relay valve switching to the fail position. The first clutch apply relay valve inputs the engagement pressure of the hydraulic servo from the linear solenoid valve when in the normal position, and is locked in the normal position. Thereby, while the first clutch is engaged, the second brake apply control valve can be switched by the signal pressure of the solenoid valve.

Abstract: A transmission ratio varying mechanism is configured such that transmission of rotation between a first steering shaft and an eccentric rotary plate is performed via a first rotation transmitting ball group that engages with a third cycloidal groove and a first cycloidal groove and such that transmission of rotation between the eccentric rotary plate and a second steering shaft is performed via a second rotation transmitting ball group that engages with a second cycloidal groove and a fourth cycloidal groove.

Abstract: A hydraulic control apparatus for a multi-stage automatic transmission includes solenoid valves such as the linear solenoid valves that are formed as normally closed valves. A first clutch apply relay valves that outputs a forward range pressure as a reverse input pressure during an all-solenoid-off mode, and a second clutch apply relay valve that switches between a left half position that inputs a reverse input pressure to a discharge port and a right half position that inputs the reverse pressure to the discharge port are provided. The second clutch apply relay valve is set to the right half position during normal engine startup and locked based on the lock pressure by feeding the line pressure as a lock pressure and is set at the left half position that interrupts the lock pressure after the engine is restarted during all-solenoids-off.

Abstract: A clutch-brake assembly transmits force to rotate a shaft and to retain the shaft against rotation. The assembly includes a plurality of force transmitting members which transmit force between a piston and a base member. A plurality of springs urge the piston to move relative to the base member. A plurality of spring retainers are disposed between the base member and the piston. Each of the spring retainers includes a plurality of projecting portions extending from the base portion. Each of the springs is telescopically disposed on one of the projecting portions. Each of the force transmitting members is disposed between adjacent spring retainers.

Abstract: A differential having four pinions supported for rotation on cross pins within a differential case. The differential employs a retainer system for securing the cross pins relative to the differential case. The retainer system can include a retainer, such as a clip or a pair of roll pins, that can secure at least one of the cross pins in place.

Abstract: An external-control-type fan coupling device is provided and has no restriction on the layout or positional relationship of an electromagnetic coil and a valve element of the device. As a result, the casing and the valve structure of the device can be simplified. Additionally, the design prevents leaking of oil and leaking of magnetism without adversely affecting performance.

Abstract: The present invention provides an automatic transmission having a main bearing disposed between the inner surface of a boss portion of a first drum and the outer surface of a cylindrical support, for rotatably supporting the first drum. An auxiliary bearing is press-fit into one end of the interior of the boss portion of the first drum and surrounds the cylindrical support with an annular gap therebetween. The auxiliary bearing contacts the cylindrical support only when the first drum tilts relative to the central axis of the transmission, and has a shorter axial length than that of the main bearing.

Abstract: A controller for a continuously variable transmission (CVT) mounted in a vehicle. The controller includes a first setting unit for setting a basic speed ratio of the CVT; a second setting unit for setting an adjustment speed ratio of the CVT; and a control unit for controlling the CVT based on the basic speed ratio and adjustment speed ratio. The second setting unit includes an increasing unit for progressively increasing the adjustment speed ratio according to a increase in a target torque interrelated value in a first operating area, and a decreasing unit for progressively decreasing the adjustment speed ratio according to a decrease in the target torque interrelated value in a second operating area. Between the first operating area and the second operating area, the second setting unit maintains the adjustment speed ratio that is set finally.

Abstract: In a shift control device and a shift control method of an automatic transmission that establishes a plurality of gear steps of different speed change ratios by selectively engaging a plurality of friction engagement devices, one of a shift start time point and an inertia phase start time point is used as a reference time. In a power-off shift, the shift action is compulsorily ended when the elapsed time from the reference time exceeds a first time. In a power-on shift, the shift action is compulsorily ended when the elapsed time from the reference time exceeds a second time that is set shorter than the first time. If a switch from the power-off shift to the power-on shift occurs halfway through the power-off shift, the shift action is compulsorily ended when the elapsed time from the time point of the switch exceeds a predetermined time.

Abstract: A crop sprayer control assembly includes a hand-operated control device with an up-throttle sensor operably connected to the hand-operated control device. A down-throttle sensor, an up-shift sensor and a down-shift sensor are also operably connected to the hand-operated control device.

Abstract: A transmission device between a primary drive shaft and an output shaft includes a housing inside of which is housed at least partially a reduction gear mechanism that consists of an engine-driving element, meshed with a driven element, adapted to be coupled to or uncoupled from the output shaft by a clutch mechanism that is activated/deactivated by axial movement of the gearwheel on the shaft. The clutch mechanism, retracted to the disengaged position, assumes the shape of a plate that is integral in rotation with the output shaft. The plate has on its face opposite the gearwheel, ramps designed to work during the engagement phase with ramps that are supported by the gearwheel.

Abstract: A controller for crawlers of a trencher receives an indication of the speed of an engine and the speed of an output of a torque converter coupling the engine to an excavating element for digging a trench. Based on the ratio of the speed of the engine and the speed of the output of the torque converter, the controller overrides operator input on the crawlers and stops or slows the trencher when the ratio exceeds a predetermined ranged.