A combination starter-generator device is provided for a work vehicle having an engine. The starter-generator device includes an electric machine; and a gear set configured to receive rotational input from the electric machine and from the engine and to couple the electric machine and the engine in a first power flow direction and a second power flow direction. The gear set is configured to operate in one of multiple relatively high-torque, low-speed start gear ratios in the first power flow direction and a relatively low-torque, high-speed gear ratio in the second power flow direction.

A torsional damper arrangement for a motor vehicle with a housing. The housing encloses a wet space. A momentum start clutch arrangement is arranged in the housing.

The present invention relates to a freewheel (2) comprising an inner ring (30), an outer ring (28), a clamping gap (32) between the inner ring (30) and the outer ring (28), a side wall (40) for lateral limitation of the clamping gap (32) and at least one clamping element (34) in the clamping gap (32) which is biased by means of a spring element (66), wherein the spring element (66) is supported or supportable on one side on the clamping element (34) and on the other side on a support projection (70), which is formed by a supporting tongue (74) bent out of the side wall (40) and projecting into the clamping gap (32). In addition, the present invention relates to a method for producing such a freewheel (2).

A hybrid drive device includes an internal combustion engine, an electric machine and an impulse start module which comprises two clutches and a flywheel mass. A method for operating the hybrid device includes opening the first clutch of the impulse-start module and establishing a start-up requirement for the internal-combustion engine. The method also includes closing the first clutch with the second clutch in an open or closed position for a start of the internal-combustion engine.

The invention relates mainly to a starter (11) for a motor vehicle combustion engine, comprising: an electric motor (15), a drive pinion (60), a pinion body (61) on which said drive pinion (60) is mounted, a drive shaft (12) able to transmit a torque derived from the electric motor (15) to the drive pinion (60) via the pinion body, the pinion body (61) being mounted with the ability to slide axially with respect to the drive shaft (12), and in which, with there being a chamber (86) delimited notably by one end of the drive shaft (12) and one end of the pinion body (61) opposite the end of the drive shaft (12), the chamber (86) is vented via a through-opening (85) made in an annular wall of the drive shaft (12) or of the pinion body (61).

A power transmitting apparatus with rotary electrical machine disposed in a power transmission path from an output shaft of an internal combustion engine to a transmission in a vehicle is disclosed. The power transmitting apparatus includes a rotary electrical machine disposed coaxially with the output shaft, and a transmission apparatus disposed adjacent to the power transmitting apparatus and the rotary electrical machine. The transmission apparatus is configured to mechanically switch at least two power transmission paths having different reduction ratios between one of an outer shell of the power transmitting apparatus and a synchronous rotation member that rotates synchronously with the outer shell and a rotor of the rotary electrical machine

A starter for an engine is equipped with a planetary gear train as a torque variator to change torque used to start the engine. The torque variator is capable of changing the degree of torque which is transmitted between a planetary carrier and an outer gear of the planetary gear train, thereby changing a ratio of speed of a sun gear to speed of the planetary carrier of the planetary gear train to increase or decrease the degree of torque required to start the engine. This ensures the stability in starting the engine, for example, in cold conditions and achieves a quick start of the engine as needed.

A device for operatively connecting an engine starter to an engine where the engine includes an engine crankshaft and the engine starter has a starter shaft with a length and a worm, or worm screw, of a worm drive spaced radially from the starter adapter shaft and within the length of the shaft is described herein. The device compromises a worm gear assembly as operatively attached to the starter adapter shaft. The a worm gear assembly includes a worm gear, or worm wheel, positioned to engage the worm and an overrunning clutch positioned radially between the worm gear and the starter adapter shaft and operatively engaging the starter adapter shaft.

Disclosed is a freewheel (4) comprising a first race (38), a second race (40), a clamping gap (46) designed between the first and second race (38, 40), at least one clamping element (48) in the clamping gap (46), and biasing feature (64) for biasing the clamping element (48) into a clamping position within the clamping gap (46), wherein the biasing feature (64) have an accordion spring (66), which is supported directly or indirectly on the first race (38) and which comprises corrugation peaks (70) lying radially outward, corrugation troughs (72) lying radially inward, and a support leg (76) for direct or indirect support on the clamping element (48). In addition, disclosed is a freewheel arrangement (2) comprising such a freewheel (4).

The present invention relates to a method to control a hybrid powertrain, comprising a combustion engine, an electric machine, a gearbox with input shaft and output shaft, wherein the combustion engine and the electric machine are connected to the input shaft. The method comprises the following steps: a) disconnecting the combustion engine from the input shaft with a coupling device, b) engaging a starting gear in the gearbox, which starting gear is higher than the gear at which the combustion engine's torque at idling speed is able to operate the input shaft, c) generating a torque in the input shaft with the electric machine, d) accelerating the electric machine, and e) connecting the combustion engine to the input shaft with the coupling device when the electric machine has reached substantially the same rotational speed as the combustion engine. The invention also relates to a hybrid powertrain and a vehicle.