A method for operating a motor vehicle includes, when a target differential speed is set for a separating clutch (4), determining a power transmission factor depending on the target differential speed and an internal combustion engine-driven torque to be transmitted by the separating clutch (4). The method also includes determining an actuating pressure for the separating clutch (4) depending on the power transmission factor, controlling the separating clutch (4) with the actuating pressure, ascertaining an actual differential speed forming at the separating clutch (4) depending on the actuating pressure, determining a corrected power transmission factor with a controller (10) depending on a deviation between the target differential speed and the actual differential speed, determining a corrected actuating pressure for the separating clutch (4) depending on the corrected power transmission factor and the internal combustion engine-driven torque to be transmitted, and controlling the separating clutch (4) with the corrected actuating pressure.

A method and an open-loop and closed-loop control device for compensating for a clutch torque of a separating clutch located between an internal combustion engine and an electric machine in a hybrid drive of a motor vehicle. The compensation takes into consideration the rotational speed of the electric machine. The rotational speed of the electric machine impacts clutch torque. A compensation factor is calculated, and increases or decreases the necessary clutch torque, causing a corresponding actuation of an actuator to achieve the necessary clutch torque.

A clutch control method for a hybrid vehicle with a DCT is provided. The method includes determining an energy-saving possible period based on a selection state of shifting ranges, operation states of an accelerator pedal and a brake pedal, and the gradient of a road on which the vehicle is driven. An operation current is set for maintaining a clutch, which is configured to engage the first gear, engaged as 0 A in response to determining that a current state of the vehicle is in the energy-saving possible period.

A method and a system for controlling a backlash of a powertrain included in a vehicle in connection with a gear shifting operation is presented. The method comprises: controlling, in connection with a first gear shifting operation, a clutch included in the powertrain to a slipping position, in which slipping position the clutch transfers a slipping torque that is less than a torque being transferred in a closed position for the clutch; analyzing a change of a rotational speed for an input shaft of a gearbox included in the powertrain; determining a position for the clutch, for which position the change of the rotational speed has a value corresponding to a backlash torque, the backlash torque having a predetermined value for eliminating the backlash; and utilizing the determined clutch position for controlling the clutch in connection with a second subsequent gear shifting operation.

Methods and systems for automatic braking for vehicles having a manual transmission are disclosed. An exemplary method includes providing a vehicle with at least one vehicle sensor, at least one actuator, and a controller in communication with the at least one vehicle sensor and the at least one actuator, determining a vehicle speed and an engine speed, receiving sensor data from the at least one vehicle sensor, calculating if the vehicle speed should be reduced based on the sensor data from the at least one vehicle sensor, generating a first control signal if the vehicle speed should be reduced, calculating if the engine speed is below a predetermined idle speed, generating a second control signal if the engine speed is below the predetermined idle speed, and automatically controlling the at least one actuator based on the first and second control signals.

According to one embodiment, for example, a transfer control device controls a transfer that adjusts torque distribution to front wheels and rear wheels of a four-wheel vehicle and that includes a wet type multi-disc clutch and a piston. The transfer control device includes: a detector that detects, based on an output value of a sensor provided in the vehicle, whether a predetermined condition corresponding to a state immediately before ignition of the vehicle is turned ON is established; a controller that starts moving the piston when the detector detects that the predetermined condition is established, so that the multi-disc clutch is switched to a connected state from a disconnected state; and a storage that stores therein, while the piston is moved by the controller, information on a connection start state at which connection of the multi-disc clutch is started.

This clutch control device includes a clutch apparatus configured to connect and disconnect power transmission between a prime mover and an output target, a clutch actuator configured to output a driving force for actuating the clutch apparatus, a control unit configured to drive the clutch actuator, and an operating force transmission mechanism configured to transmit an operating force of a driver with respect to a clutch operator to the clutch apparatus, an operating force sensor configured to detect the operating force of the driver is provided in the operating force transmission mechanism, and the control unit drives the clutch actuator according to a detection value of the operating force sensor.

A clutch control device includes a clutch apparatus (26) configured to connect and disconnect power transmission between a prime mover (13) and an output object (21), a clutch actuator (50) configured to output a driving force for actuating the clutch apparatus (26), a controller (40) configured to control driving of the clutch actuator (50), and a clutch operator configured to operate the clutch apparatus (26) regardless of the driving of the clutch actuator (50), the controller (40) detects that there is a manual operation by the clutch operator when a difference of a predetermined value or more is detected between a reference output value of the clutch actuator (50) configured to operate the clutch apparatus (26) and a measured value of an output value of the clutch actuator (50).

A vehicle includes a transmission that performs a method of operating a clutch of a vehicle. The vehicle includes the clutch, an actuator device and a processor. The actuator device includes a piston movable to operate the clutch. The processor is configured to receive a pressure signal indicative of a selected fluid pressure for operating the clutch, determine a position for the piston in the actuator device from the pressure signal, and move the piston to the position to operate the clutch at the selected fluid pressure.

This clutch control device includes a clutch apparatus configured to connect and disconnect power transmission between a prime mover and an output target, a clutch actuator configured to output a driving force for actuating the clutch apparatus, a control unit configured to drive the clutch actuator, and an operating force transmission mechanism configured to transmit an operating force of a driver with respect to a clutch operator to the clutch apparatus, an operating force sensor configured to detect the operating force of the driver is provided in the operating force transmission mechanism, and the control unit drives the clutch actuator according to a detection value of the operating force sensor.