A commercial vehicle with at least one driven axle, at least one service brake, at least one propulsion engine, and wheels characterized in that the parking brake function of the vehicle is solved by a bistable locking means acting on both wheels. At least one multi-speed gearbox is provided to concurrently activate a first gear stage and a second gear stage having different ratios.

Ideally, when a transmission is in Neutral, no torque should be exerted on the vehicle wheels by the powertrain. However, even with all clutches in a gearbox disengaged, some torque may be transmitted from a turbine shaft to the transmission output due to clutch drag and transmission component inertia. To avoid transmitting torque, a subset of clutches may be engaged to produce an input tie-up state, this holding the turbine shaft against rotation while permitting rotation of the output element.

An apparatus and a method for controlling operation of a vehicle includes a controller having a processor and a tangible, non-transitory memory. The vehicle includes a park assembly with a park actuator motor having an actuator shaft. The vehicle has a park mode and an out-of-park mode. The controller is configured to determine if the park actuator motor has reached an out-of-park position when a shift command to the out-of-park mode is received. The controller is configured to obtain and store at least one dynamic parameter associated with the park actuator motor prior to the detent member reaching the out-of-park position. The method includes determining a load factor based on the dynamic parameter over time when at least one of a predefined time threshold and a predefined motor position threshold is reached. Operation of the vehicle is controlled based at least partially on the load factor.

An apparatus and a method for controlling operation of a vehicle includes a controller having a processor and a tangible, non-transitory memory. The vehicle includes a park assembly with a park actuator motor having an actuator shaft. The vehicle has a park mode and an out-of-park mode. The controller is configured to determine if the park actuator motor has reached an out-of-park position when a shift command to the out-of-park mode is received. The controller is configured to obtain and store at least one dynamic parameter associated with the park actuator motor prior to the detent member reaching the out-of-park position. The method includes determining a load factor based on the dynamic parameter over time when at least one of a predefined time threshold and a predefined motor position threshold is reached. Operation of the vehicle is controlled based at least partially on the load factor.

A control apparatus for a vehicle that includes an engine; a transmission; a damper and a clutch. The transmission has a gear ratio that is variable in a range including a torque-fluctuation insufficient absorption region in which a damper spring of the damper is elastically deformed to a certain maximum limit when a misfire occurs in the engine. The control apparatus includes: a misfire determination portion configured to determine occurrence of the misfire in the engine; and a misfire-case shift control portion configured, upon determination of the occurrence of the misfire in the engine by the misfire determination portion when the gear ratio of the transmission is in the torque-fluctuation insufficient absorption region, to cause the transmission to execute a shift-down action such that the gear ratio becomes higher than a higher threshold value of the torque-fluctuation insufficient absorption region.

A method for holding a vehicle on a gradient. The vehicle has a transmission with an output, a first clutch and a second clutch. The primary sides of the first and second clutches are mechanically operatively connected to one another. The secondary sides of the first and second clutches are mechanically operatively connected to one another and to the output of the transmission. Different transmission ratios can be engaged by way of the first clutch and the second clutch, and the first clutch is in an engaged state. The method includes the additional closure of the second clutch in order to block the transmission and thus hold the vehicle at a standstill on a gradient.

A method for holding a vehicle on a gradient. The vehicle has a transmission with an output, a first clutch and a second clutch. The primary sides of the first and second clutches are mechanically operatively connected to one another. The secondary sides of the first and second clutches are mechanically operatively connected to one another and to the output of the transmission. Different transmission ratios can be engaged by way of the first clutch and the second clutch, and the first clutch is in an engaged state. The method includes the additional closure of the second clutch in order to block the transmission and thus hold the vehicle at a standstill on a gradient.

A drive control system for a motor vehicle operated by electric motor has a drive position selector device and an electronic control unit which is connected to the drive position selector. The drive control system is configured in such a way that when a first alternative automatic drive position is selected a comparatively high, not freely selectable recuperation level can be predefined and crawl mode is deactivated, and when a second alternative automatic drive position is selected at least one constant recuperation level or a sailing mode can be predefined and crawl mode is activated.

Systems and methods for performing a garage shift of an automatic transmission of a vehicle comprise maintaining a clutch at a first holding pressure while the transmission is in a neutral gear and a brake input signal satisfies a threshold and maintaining the clutch at a lower second holding pressure while the transmission is in the neutral gear and the brake input signal satisfies the threshold to mitigate or eliminate causing drive torque to be transferred from a torque generating system of the vehicle to its driveline via the transmission. When the brake input signal satisfies the threshold and a shift from the neutral gear to a non-neutral gear is requested, the garage shift is then executed.

Systems and methods for performing a garage shift of an automatic transmission of a vehicle comprise maintaining a clutch at a first holding pressure while the transmission is in a neutral gear and a brake input signal satisfies a threshold and maintaining the clutch at a lower second holding pressure while the transmission is in the neutral gear and the brake input signal satisfies the threshold to mitigate or eliminate causing drive torque to be transferred from a torque generating system of the vehicle to its driveline via the transmission. When the brake input signal satisfies the threshold and a shift from the neutral gear to a non-neutral gear is requested, the garage shift is then executed.