A mechanical unlocking mechanism for electronic parking is provided, which comprises a parking cam assembly, a pawl assembly, a parking gear, a pull cord assembly and an actuating assembly. The parking cam assembly comprises a parking guide shaft and a parking cam. The parking cam is sleeved on the parking guide shaft. The outer side of the parking cam is provided with an arc protrusion along a circumferential direction, so that with the rotation of the parking cam, the pawl assembly is in a first position where the parking gear parks in and a second position where the parking gear parks out. One end of the pull cord assembly is connected with the actuating assembly, and the other end of the pull cord assembly is connected with the parking guide shaft. The actuating assembly drives, via the pull cord assembly, the parking guide shaft to translate, thereby driving the pawl to move from the first position to the second position. The mechanical unlocking mechanism according to the present disclosure provides an emergent mechanical unlocking function when the parking motor is powered off, and the driver can perform manual mechanical unlocking in the cab without getting off the vehicle, so it has high safety and good operation comfort.

An electric drive for a motor vehicle includes: a drive housing with a motor housing section and a motor chamber. A stator and a rotor, the rotor being rotatably mounted relative to the stator by a rotor shaft, are arranged in the motor chamber. The electric drive also includes a parking lock with an engagement mechanism configured to lock the rotor shaft relative to the drive housing is arranged in the electric drive.

A power transmission device includes a gear mechanism, a wall part that overlaps with the gear mechanism in an axial direction, a plate provided between the wall part and the gear mechanism in the axial direction, and a park lock mechanism. The park lock mechanism has a parking pawl on a side of a surface of the plate facing the wall part. The park lock mechanism has a manual shaft and/or a detent mechanism on a side of a surface of the plate facing the gear mechanism.

A power transmission device includes a bearing, a differential mechanism, a case that houses the differential mechanism, a pinion gear supported by the case, a wall part that overlaps the case in an axial direction, a plate that is provided between the wall part and the case in the axial direction, and that supports the case with the bearing being interposed, and a parking pawl that is rotatably fixed to the plate in a position that overlaps the plate in the axial direction.

A power transmission path switching device has a friction engaging device; a rotation transmission state switching device comprising a first member and a second member arranged coaxial with each other and having: a free mode and/or a one-way clutch mode allowing rotation of the first member with respect to the second member, and a lock mode preventing rotation of the first member with respect to the second member; and a control device that, when connecting the friction engaging device and setting the rotation transmission state switching device to the lock mode, has a function of connecting the friction engaging device, and then while maintaining the friction engaging device in a connected state, switches the rotation transmission state switching device to the lock mode.

A power transmission path switching device has a friction engaging device; a rotation transmission state switching device comprising a first member and a second member arranged coaxial with each other and having: a free mode and/or a one-way clutch mode allowing rotation of the first member with respect to the second member, and a lock mode preventing rotation of the first member with respect to the second member; and a control device that, when connecting the friction engaging device and setting the rotation transmission state switching device to the lock mode, has a function of connecting the friction engaging device, and then while maintaining the friction engaging device in a connected state, switches the rotation transmission state switching device to the lock mode.

A gearshift lock for a gearbox includes a gearshift cylinder and a pawl wheel with a toothing. The gearshift lock includes a rotatably positioned pawl, and the pawl engages in the toothing of the pawl wheel in a locked position, and is disengaged from the pawl wheel in a freewheeling position. The pawl is pretensioned by a spring element in the direction of the locked position, and an engagement element is connected to the pawl. The engagement element holds the pawl in the freewheeling position by directly interacting with the gearshift cylinder against the effect of the spring element when the gearshift cylinder takes up a rotational position in a freewheeling rotational range, and the pawl can be released from the gearshift cylinder into a locked position by the engagement element when the gearshift cylinder takes up a rotational position in a locked rotational range.

A hydraulic control system for a multiple speed motor vehicle automatic transmission having electronic transmission range selection (ETRS) provides both a forward gear ratio and Park options during default conditions where the transmission loses electronic control when the ETRS system is in a drive mode. The hydraulic control system includes a two position default disable solenoid valve, an ETRS valve, a park servo, position sensors, a default disable valve, a drive select valve, various orifices and blow-off valves as well as main and auxiliary pumps, a torque converter, a torque converter regulator and control valve and a plurality of linear force solenoid valves and clutch regulation valves which control a like plurality of clutch and brake actuators.

A parking mechanism located on a final drive or primary drive of a vehicle to engage or disengage an output shaft connected to wheels of the vehicle. The parking mechanism includes a back drive chain on the final drive or primary drive that engages with a parking pawl. A cam assembly biases the parking pawl to engage with the back drive chain to prevent rotation of the wheels.

A transmission shifting assistance device, in particular for a motorcycle, is provided. The transmission shifting assistance device, which allows shifting when the clutch is closed, includes a housing, a piston arranged in the housing, and at least one pressure spring provided in the housing. The piston may be moved relative to the housing by compressing at least one pressure spring. Furthermore, transmission shifting assistance device further includes a locking device separate from the at least one pressure spring. The locking device fixes the piston in a neutral position relative to the housing below a predetermined unlocking force exerted on the piston or the housing.