A control device of an internal speed change device of a wheel hub for clutching operation includes a rod; a lever installed on the rod; the lever being connected to a controlling claw sliding block; an electric sliding block installed on a lever sleeve; the lever sleeve serving to receive a back end of the lever; an electric bushing located at an outer side of the lever sleeve; a controlling ring located at an outer side of the electric bushing; and wherein force of attraction or repulsion between the controlling ring and the electric sliding block drives the electric sliding block to rotate or move axially so as to drive the lever to move forwards or backwards axially; and moving of the lever drives the controlling claw sliding block to control clutching of the internal speed change device.

A control device of an internal speed change device of a wheel hub for clutching operation includes a rod; a lever installed on the rod; the lever being connected to a controlling claw sliding block; an electric sliding block installed on a lever sleeve; the lever sleeve serving to receive a back end of the lever; an electric bushing located at an outer side of the lever sleeve; a controlling ring located at an outer side of the electric bushing; and wherein force of attraction or repulsion between the controlling ring and the electric sliding block drives the electric sliding block to rotate or move axially so as to drive the lever to move forwards or backwards axially; and moving of the lever drives the controlling claw sliding block to control clutching of the internal speed change device.

A vehicle drive unit that provides improved power transfer to a differential input member of a differential assembly. The vehicle drive unit is configured with an interlock system that is configured to inhibit the supply of electrical power from a source of electrical power if certain predetermined conditions are not met.

A case-emphasized propulsion method improves vehicle fuel efficiency. The ratio of the most-used speed to the most-desired speed of an IC engine is employed to control the engine to always run at its optimal working state with an efficient single-stage gear transmission. The propulsion method used with different brands of IC engines demonstrates a reduction in fuel consumption between 5 and 39%. An n-ratio automatic single-stage gear transmission implements the propulsion method. The transmission design executes the proposed propulsion method as well a continuous transmission, but it can also increase the propulsion efficiency about 8 to 18% when applied to replace traditional automatic transmissions or continuously variable transmissions in vehicle drivetrains.

The present disclosure relates to an electromagnetic clutch, including a selector sleeve which is arranged in a rotationally fixed manner on a first shaft and is adapted to be shifted linearly along the first shaft between an engaged and a disengaged state, a coupling body which is aligned coaxially to the first shaft, a stator which has a coil which serves to shift an armature ring linearly along the first shaft, the armature ring being mounted radially in an axial guide separately from the first shaft and the coupling body, wherein a shifting of the armature ring by the coil is also accompanied by a shifting of the selector sleeve. The present disclosure also relates to a method of closing and opening an electromagnetic clutch.

A wedge clutch, including: an outer carrier; a first clutch plate non-rotatably connected to the outer carrier; a wedge clutch plate; a hub radially inward of the outer carrier; an engagement assembly including a pin partially disposed within the hub and in contact with the wedge clutch plate; and an actuator. For a first synchronization stage for closing the wedge clutch: the actuator is arranged to clamp the first clutch plate and the wedge clutch plate; and a first portion of the pin extending radially outward beyond an outer circumference of the hub is arranged to transmit torque between the hub and the carrier. For a second synchronization stage for closing the wedge clutch: the hub or the wedge clutch plate are arranged to circumferentially displace with respect to each other; and the wedge clutch plate is arranged to displace the pin radially inward.

A synchromesh mechanism is activated when cancelling a disconnection state, and, when an electronic control unit determines that a rotation speed of an input shaft has been synchronized with a rotation speed of a first ring gear, a second intermeshing clutch is engaged, and then a first intermeshing clutch is engaged. For this reason, in the first intermeshing clutch, a decrease in the rotation speed of the first ring gear is suppressed as a result of engagement of the second intermeshing clutch. This suppresses out of synchronization between the rotation speed of the first ring gear and the rotation speed of the input shaft at the time when the first intermeshing clutch is engaged.

A case-emphasized propulsion method improves vehicle fuel efficiency. The ratio of the most-used speed to the most-desired speed of an IC engine is employed to control the engine to always run at its optimal working state with an efficient single-stage gear transmission. The propulsion method used with different brands of IC engines demonstrates a reduction in fuel consumption between 5 and 39%. An n-ratio automatic single-stage gear transmission implements the propulsion method. The transmission design executes the proposed propulsion method as well a continuous transmission, but it can also increase the propulsion efficiency about 8 to 18% when applied to replace traditional automatic transmissions or continuously variable transmissions in vehicle drivetrains.

A wedge clutch, including: an outer carrier; a first clutch plate non-rotatably connected to the outer carrier; a wedge clutch plate; a hub radially inward of the outer carrier; an engagement assembly including a pin partially disposed within the hub and in contact with the wedge clutch plate; and an actuator. For a first synchronization stage for closing the wedge clutch: the actuator is arranged to clamp the first clutch plate and the wedge clutch plate; and a first portion of the pin extending radially outward beyond an outer circumference of the hub is arranged to transmit torque between the hub and the carrier. For a second synchronization stage for closing the wedge clutch: the hub or the wedge clutch plate are arranged to circumferentially displace with respect to each other; and the wedge clutch plate is arranged to displace the pin radially inward.

A vehicle drive unit that provides improved power transfer to a differential input member of a differential assembly. The vehicle drive unit is configured with an interlock system that is configured to inhibit the supply of electrical power from a source of electrical power if certain predetermined conditions are not met.