An electric vehicle is provided with an electric motor serving as a driving source and is not provided with an internal combustion engine from which power is transmitted to drive wheels driven by power from the electric motor. The electric vehicle includes: a torque converter that is disposed coaxially with an output shaft of the electric motor, and to which the power is transmitted from the electric motor; an automatic transmission disposed on a power transmission path between the electric motor and the drive wheels, and configured to achieve a shift stage at which the power is interrupted; and a mechanical oil pump driven by the power from the electric motor, and disposed on the power transmission path, at a position upstream of the automatic transmission in a direction of power transmission from the electric motor to the drive wheels. The mechanical oil pump is disposed in the electric motor.

A transmission includes a variator configured to transmit power from a first shaft to a second shaft. The transmission further includes a first gearing arrangement configured to selectively transmit power from the second shaft to a third shaft. The first gearing arrangement transmits power at a positive speed ratio when a first clutch is engaged and at a negative speed ratio when a second clutch is engaged. The transmission also includes a second gearing arrangement configured to selectively transmit power from the first shaft to the third shaft.

An actuator system has a power source, an output member, a first fluidic coupling and a second fluidic coupling. The fluidic couplings generate a variable amount of torque transmission. A transmission operatively couples the fluidic couplings to the power source and to the output member in at least first load path and a second load path, the first load path and the second load path being parallel to one another, the first load path including the first fluidic coupling, the second load path including the second fluidic coupling. The fluidic couplings are operable for torque from the power source to be transmitted solely via the first load path, solely via the second load path, and cumulatively via the first load path and the second load path.

A continuously variable transmission, a vehicular powertrain that includes a continuously variable transmission and a method of limiting belt slippage in a continuously variable transmission in a vehicle. The continuously variable transmission includes a pulley assembly, shafts, a clutch and hydraulic system. The hydraulic system is cooperative with both the clutch and the pulley assembly so that hydraulic pressures and associated clamping forces sent to both allow the clutch to preferentially absorb any driving load coming from the axle and wheels that is in excess of the normal load experienced at the continuously variable transmission. This in turn means that any additional load that would ordinarily cause slippage in the belt is instead experienced by the clutch. By providing such a clutch, the pump of the hydraulic system does not need to be oversized in order to provide excess clamping force, as any excess load experienced by the shaft that is coupled to the wheels of the vehicle will be taken up by slippage in the clutch so that slippage-related wear to the belt is avoided.

A device for transmitting a rotation movement includes first and second force transmission sections, each with a drive input and a drive output, and with a first chain guide. The chain guide is arranged between the drive input and output and accommodates an endless chain, which circulates between the drive input and drive output. A middle force transmission section with a middle drive input and a middle drive output, and with a conduit that is arranged between these. The conduit accommodates a hydraulic fluid and transmits forces between the first and the second force transmission section. The hydraulic fluid circulates between the middle drive input and the middle drive output and transmits push forces between the middle drive input and the middle drive output. The first drive output is coupled to the middle drive input, and the middle drive output is coupled to the second drive input.

Torque is transmitted from an electric motor to an output unit through different gear trains depending on direction of rotation of the electric motor. The drive unit includes an electric motor, a first gear train, a second gear train, a third gear train, and a moving mechanism. The first gear train includes a first drive gear, a first driven gear, and a clutch member. The clutch member moves inside the first driven gear and receives torque transmitted from the first driven gear. The second gear train transmits to an output unit the torque transmitted from the first gear train. The third gear train transmits to the output unit the torque transmitted from the first gear train. The moving mechanism axially moves the clutch member toward the second drive gear when the electric motor is forwardly rotated and toward the third drive gear when the electric motor is reversely rotated.

Torque is transmitted from an electric motor to an output unit through different gear trains depending on direction of rotation of the electric motor. The drive unit includes an electric motor, a first gear train, a second gear train, a third gear train, and a moving mechanism. The first gear train includes a first drive gear, a first driven gear, and a clutch member. The clutch member moves inside the first driven gear and receives torque transmitted from the first driven gear. The second gear train transmits to an output unit the torque transmitted from the first gear train. The third gear train transmits to the output unit the torque transmitted from the first gear train. The moving mechanism axially moves the clutch member toward the second drive gear when the electric motor is forwardly rotated and toward the third drive gear when the electric motor is reversely rotated.

A torque converter for coupling an engine to a manual transmission and a method of controlling the same are provided. The torque converter includes a housing rotating with the engine, a cover abutting the housing, a stator, a pump circulating fluid within the torque converter, and a turbine driven by the circulating fluid. An integrated disconnect clutch controls pump speed and a torsional damper attenuates vibrations transmitted through the housing. A first output shaft is coupled with the turbine and drives a first forward gear of the manual transmission while permitting slip. A second output shaft is coupled with the torsional damper, the integrated disconnect clutch, and the pump and drives at least one other forward gear of the manual transmission without slip. An output connection member rotatably couples the pump with the torsional damper, the integrated disconnect clutch, and the second output shaft.

A torque converter for coupling an engine to a manual transmission and a method of controlling the same are provided. The torque converter includes a housing rotating with the engine, a cover abutting the housing, a stator, a pump circulating fluid within the torque converter, and a turbine driven by the circulating fluid. An integrated disconnect clutch controls pump speed and a torsional damper attenuates vibrations transmitted through the housing. A first output shaft is coupled with the turbine and drives a first forward gear of the manual transmission while permitting slip. A second output shaft is coupled with the torsional damper, the integrated disconnect clutch, and the pump and drives at least one other forward gear of the manual transmission without slip. An output connection member rotatably couples the pump with the torsional damper, the integrated disconnect clutch, and the second output shaft.

The present invention relates to a method for heating a transmission (1) for a working machine having a plurality of hydraulically actuated shifting elements (8; 9; 10; 11; 12; 13). The method involves the sending (III) of a closing signal for closing shifting elements (8; 9; 10; 11; 12; 13) in order to block the transmission (1). In addition, the method entails pulsed actuation (V) for opening and closing of at least one of the closed shifting elements (8; 9; 10; 11; 12; 13) while the transmission (1) remains blocked. Furthermore, the present invention relates to a control unit which is designed to carry out such a method, and to a transmission for a working machine with such a control unit.