A park lock system for a vehicle transmission, includes a movable primary carrier, a secondary carrier, a rod, a first biasing member, an engagement carrier, and a first actuator. The movable primary carrier defines a primary internal space. The secondary carrier is located within the primary internal space and is movable relative to the primary carrier. The rod fixedly extends from the secondary carrier and includes a rod portion located outside of the primary internal space. The first biasing member is located within the primary internal space between the secondary carrier and the primary carrier. The engagement carrier is configured to receive the rod portion and includes a terminal portion operably connected to a pawl and a park lock wheel arrangement to lock and unlock the vehicle transmission. The first actuator is configurable in a first state or a second state.

A method for operating a parking lock device (21) with a hydraulic system (1), the method including, when there is a demand to engage the parking lock device (21) originating from a disengaged operating condition of the parking lock device (21), applying a pilot pressure (p_EDS4) at the parking lock valve (PSV) and applying the main pressure (p_sys) at the parking lock valve (PSV), if necessary, via the positioning valve (POSV). The pilot pressure (p_EDS4) and the main pressure (p_sys) are each guided to defined pressure levels at which the parking lock valve (PSV) is transferrable into the further operating condition range of the parking lock valve (PSV) by the active actuating force against the pilot pressure (p_EDS4) and against the pressure between the parking lock valve (PSV) and the parking lock cylinder (23).

The invention relates to a method for activating a parking lock system (20) in the drive train (18) of a vehicle (10) having at least one electrical machine (24) comprising a transmission which is connected to driven wheels (16), wherein the following method steps are carried out: a) comparing a rotational speed n.sub.E of the at least one electrical machine (24) with the transmission to a predetermined threshold value for a limiting speed n.sub.G, b) in the event that the rotational speed n.sub.E is below the threshold value for the limiting speed n.sub.G, triggering (38) a command for the actuation of an actuator system for activating the parking lock system (20) takes place, c) in the event that the rotational speed n.sub.E exceeds the threshold value for the limiting speed n.sub.G, the triggering of a command for actuation of an actuator system for activating the parking lock system (20) is prevented (42), and d) miming through a second comparison stage (44) so long as n.sub.E≥n.sub.G and, when n.sub.E≤n.sub.G is reached, branching to method step b).

A vehicle control device controls a vehicle control system, which includes a shift range switching system configured to switch a shift range by controlling a drive of a shift actuator, and an electric brake system configured to brake a vehicle by controlling a drive of a brake actuator. The vehicle control device includes a drive control unit, an abnormality monitoring unit, and a presence determination unit. The drive control unit controls a drive of a shift actuator. The abnormality monitoring unit monitors an abnormality of the shift range switching system. The presence determination unit determines whether the driver is in the driver's seat. When the abnormality of the range mismatch, which the actual shift range does not match the target shift range in a state where the driver is absent, the vehicle control device executes the fail safe process different from the fail safe process when the driver is present.

A shift device and method for coupling with a vehicle including a transmission and an electric parking actuator. The shift device includes a housing, a battery, a display interface, and a shift device connector. The shift device connector is on an end of the housing for electrically coupling the shift device to the vehicle. The shift device also includes a processor operatively connected to the battery, the display interface, and the shift device connector. Upon insertion of a first connector of the vehicle into the shift device connector, the controller receives a shift position of the transmission and controls the electric parking actuator to change the shift position of the transmission.

The invention relates to a control device (10) for a parking brake device, having an electronic device (12) by means of which, in the event of failure of a power supply system of a vehicle equipped with the control device (10) and the parking brake device during a procedure for parking the vehicle, at least one activation signal (14) can be output to a triggering device (16) of the parking brake device, so that the triggering device (16) can be activated by means of the at least one activation signal (14) and the parking brake device can be transferred to a locking mode by means of the activated triggering device (16), such that the vehicle is locked in its current parking position by means of the parking brake device present in its locking mode. Therefore, even in such a situation, secure parking of the vehicle with a minimised risk of rolling away is ensured. The invention likewise relates to parking brake devices for vehicles. The invention also relates to a method for operating a parking brake device of a vehicle.

A vehicle control device controls a vehicle control system, which includes a shift range switching system configured to switch a shift range by controlling a drive of a shift actuator, and an electric brake system configured to brake a vehicle by controlling a drive of a brake actuator. The vehicle control device includes a shift control unit and a brake control unit. The shift control unit controls a drive of the shift actuator. The brake control units control a drive of a brake actuator. When the start switch of the vehicle is turned off, the power of the brake control units is turned off after the shift range switching system completes switching to the P range.

A parking brake apparatus is provided for an autonomously drivable vehicle having components of a parking brake system for applying a parking brake. The parking brake apparatus comprises a first controller arranged to provide one or more control signals to be applied to components of the parking brake system to apply the parking brake in response to a signal requesting the parking brake to be applied. The parking brake apparatus also comprises a second controller arranged to provide one or more control signals to be applied to other components of the parking brake system to apply the parking brake in response to unavailability of the first controller to cause the parking brake to be applied.

A park lock system for a vehicle transmission, includes a movable primary carrier, a secondary carrier, a rod, a first biasing member, an engagement carrier, and a first actuator. The movable primary carrier defines a primary internal space. The secondary carrier is located within the primary internal space and is movable relative to the primary carrier. The rod fixedly extends from the secondary carrier and includes a rod portion located outside of the primary internal space. The first biasing member is located within the primary internal space between the secondary carrier and the primary carrier. The engagement carrier is configured to receive the rod portion and includes a terminal portion operably connected to a pawl and a park lock wheel arrangement to lock and unlock the vehicle transmission. The first actuator is configurable in a first state or a second state.

A vehicle transmission shifter assembly including a housing pivotally supporting a shifter lever between Park, Reverse, Neutral, Drive and Manual shifter positions. A plurality of gate locations configured upon an underside of the housing and corresponding to each of Park, Reverse, Neutral and Drive gear positions. A gate lock incorporated into the lever and biased against a selected one of the gate locations. A PCB board with processor and sensor integrated into the housing communicating with a motor connected to the shifter lever. Upon the processor determining existence of a return to park condition, a return to park mechanism actuates the motor for returning the shifter lever to the Park position.