Abstract: A vehicle control system for reducing shocks resulting from restarting an engine under EV running mode. The vehicle control system is applied to a vehicle including an engagement device that selectively connect the engine with the powertrain, and a motor adapted to generate a drive force and connected with the powertrain. In the vehicle, a first mode is selected to propel the vehicle by the motor while interrupting the torque transmission between the engine and the powertrain and stopping the engine, and a second mode is selected to propel the vehicle by the motor while allowing the torque transmission between the engine and the powertrain and stopping the engine. The vehicle control system selects the second mode if a control response of at least any of the engagement device and the motor is estimated to be out of a predetermine range when the vehicle is running while stopping the engine.

Abstract: A tangible non-transitory computer readable medium may include instructions to analyze a first signal indicative of a speed of a turbine system and transform the first signal into a second signal. The tangible non-transitory computer-readable medium may also include instructions to transmit the second signal to control a speed of the turbine system by actuating a field device. Actuating the field device may include controlling a fluid level in a torque converter mechanically coupled to the turbine system, and the speed may be below a minimum setpoint of the turbine system.

Abstract: A method of controlling a pump for a hybrid transmission includes commanding a first line pressure of the transmission and deriving a first torque value—an open-loop torque value—from the first line pressure command, and commanding the pump to operate at the first torque value. The method monitors actual speed of the pump and derives a second torque value—a closed-loop torque value—therefrom. A third torque value is derived from the first and second torque values, and the pump commanded to operate at the third torque value. A first speed value may be derived from the first line pressure command, and the second torque value derived from the difference between the monitored and the first speed values. Deriving the third torque value may include a substantially-linear combination of the first and second torque values.

Abstract: There is disclosed a continuously variable ratio transmission assembly (“variator”) comprising a roller which transmits drive between a pair of races, the roller being movable in accordance with changes in variator ratio, a hydraulic actuator which applies a biasing force to the roller, at least one valve connected to the actuator through a hydraulic line to control pressure applied to the actuator and so to control the biasing force, and an electronic control which determines the required biasing force and sets the valve accordingly, wherein the valve setting is additionally dependent upon a rate of flow in the hydraulic line.

Abstract: A hydromechanical transmission has a housing with a planetary gear system. A power output is operatively connected to the gear system for deriving power therefrom. A control is provided for operating the gear system in either a hydromechanical or a hydrostatic mode.

Abstract: A transmission unit for drive units is used to achieve at least two operational states: a first operational state for the transmission of power with at least two gear steps, and a second operational state for braking. The transmission unit includes an input shaft and an output shaft, a hydraulic transmission part and a mechanical transmission part. The two transmission parts are arranged in series. The hydraulic part includes at least two blade wheels in the form of a primary blade wheel and a secondary blade wheel, which together form at least one toroid operating space which can be filled with operating fluid. The two blade wheels are coupled to the input shaft of the transmission unit and to the mechanical part via at least part of the first operational state in such a way that power is transmitted from the primary blade wheel to the mechanical part via the secondary blade wheel.

Abstract: A friction roller type continuously variable transmission comprises an input shaft, a first transmission mechanism, a second transmission mechanism, a thrust cam device and a hydraulically operated control device. The thrust cam device biases respective input discs of the first and second transmission mechanisms toward respective output discs of the same in accordance with a torque possessed by the input shaft. The biasing for the second input disc is indirectly made through the input shaft. The control device varies the speed change ratio of each transmission mechanism. A feedback control mechanism is employed, which is incorporated with the second transmission mechanism for feeding back the existing condition of the second transmission mechanism to the control device.

Abstract: A powertrain for passenger cars includes a high specific output engine coupled to an automatic transmission which is expanded from four to five forward speed ratios by a novel two-speed torque converter assembly within the transmission. Both of hydrodynamic action and an integral planetary gearset contribute to torque multiplication provided by the high-stall-speed torque converter when it is in its lower speed ratio, and engagement of a lockup clutch simultaneously deactivates both sources of torque multiplication to thereby establish a 100% efficient one-to-one speed ratio across the converter. Also included in the powertrain in a control system which secures high transmission efficiency early during vehicle acceleration by employing lockup of the torque converter as the first of the four upshifts for the five-speed transmission.

Abstract: A fluid coupling transmission is adapted for interposition between the engine and the propulsion unit of a marine drive. The fluid coupling transmission provides variable speed operation in both forward and reverse. A fluid pump is drivingly connected to the engine crankshaft, and is adapted to drive a turbine. A series of variable position vanes are disposed between the fluid pump and turbine at the entrance of fluid into the pump, for controlling the power transfer therebetween by controlling the amount of fluid passing through the pump and acting on the turbine. A ring gear is connected to the turbine, and a sun gear is connected to the output shaft of the transmission. One or more planet gears are provided between the ring gear and the sun gear, and are rotatably mounted to a carrier member, which extends coaxially with respect to the output shaft.