The invention relates to a method of detecting a change in the direction of rotation of a rotatable shaft (5) based on non-direction sensitive rotational speed data, the method comprising the steps: .circle-solid.determining a speed (17) of a rotatable shaft (5) of a vehicle transmission (3) based on non-direction sensitive speed data received from a non-direction sensitive rotational speed sensor (7), wherein the speed (17) of the rotatable shaft (5) is the absolute value of the rotational speed of the rotatable shaft (5); .circle-solid.determining, based on the speed (17) of the rotatable shaft (5), if the duration of a first continuous time interval (20) during which the speed (17) of the rotatable shaft (5) is continually smaller than a first predetermined speed value (18) is shorter than a predetermined duration (24); and .circle-solid.detecting that a change in the direction of rotation of the rotatable shaft (5) has occurred during the first continuous time interval (20) if the duration of the first continuous time interval (20) is shorter than the predetermined duration (24). The invention further relates to a controller (8) for carrying out the method and to a driveline (100; 200) including the controller (8). The invention allows to determine a change in direction although the sensor as such is not direction sensitive. This is based on the insight that decelerating to a speed value below a threshold and subsequently accelerating again to a value which is above this threshold corresponds to a change in direction if this process occurs within a short time period.

The invention relates to a method of detecting a change in the direction of rotation of a rotatable shaft (5) based on non-direction sensitive rotational speed data, the method comprising the steps: .circle-solid.determining a speed (17) of a rotatable shaft (5) of a vehicle transmission (3) based on non-direction sensitive speed data received from a non-direction sensitive rotational speed sensor (7), wherein the speed (17) of the rotatable shaft (5) is the absolute value of the rotational speed of the rotatable shaft (5); .circle-solid.determining, based on the speed (17) of the rotatable shaft (5), if the duration of a first continuous time interval (20) during which the speed (17) of the rotatable shaft (5) is continually smaller than a first predetermined speed value (18) is shorter than a predetermined duration (24); and .circle-solid.detecting that a change in the direction of rotation of the rotatable shaft (5) has occurred during the first continuous time interval (20) if the duration of the first continuous time interval (20) is shorter than the predetermined duration (24). The invention further relates to a controller (8) for carrying out the method and to a driveline (100; 200) including the controller (8). The invention allows to determine a change in direction although the sensor as such is not direction sensitive. This is based on the insight that decelerating to a speed value below a threshold and subsequently accelerating again to a value which is above this threshold corresponds to a change in direction if this process occurs within a short time period.

The invention relates to a method for improved gear shifting of a vehicle having an Otto-engine and a vehicle transmission with a manually actuated clutch of the vehicle transmission, comprising the steps of: determining a first set of condition parameter values, said parameters comprising clutch position, requested engine torque and engine speed; determining if the first set of condition parameter values meet first predetermined conditions; if the first predetermined conditions of said first set of condition parameter values are met, activating a function for interrupting fuel provision of the engine before disengaging the vehicle transmission during gear shifting. The invention also relates also to system and a computer program product for implementing the method and a motor vehicle equipped with the system.

A vehicle control system for an agriculture vehicle. The vehicle control system includes a processing circuit including a processor and memory, the memory having instructions stored thereon that, when executed by the processor, cause the processing circuit to receive an engine speed of the agricultural vehicle, determine a difference between the engine speed and a desired engine speed, determine whether the difference is larger than an engine speed threshold, and control, responsive to the difference being larger than the engine speed threshold, the agricultural vehicle to shift to neutral.

A vehicle control system for an agriculture vehicle. The vehicle control system includes a processing circuit including a processor and memory, the memory having instructions stored thereon that, when executed by the processor, cause the processing circuit to receive an engine speed of the agricultural vehicle, determine a difference between the engine speed and a desired engine speed, determine whether the difference is larger than an engine speed threshold, and control, responsive to the difference being larger than the engine speed threshold, the agricultural vehicle to shift to neutral.

A clutch control method of the vehicle provided with the double clutch transmission may include determining, by the controller, whether a vehicle is travelling at the lowest shifting stage or the highest shifting stage and the pre-engagement of a proximate shifting stage is completed or not; storing a learned driveshaft clutch torque and a current clutch temperature and initiating a timer when it is determined that the learned driveshaft clutch torque is considered reliable by the controller learning the driveshaft clutch torque; determining, by the controller, a plurality of conditions including the passage of time to determine whether a touch point learning of the non-driveshaft clutch is necessary or not; and disengaging, by the controller, the proximate shifting stage of the non-driveshaft to neutral when it is determined that the touch point learning is necessary and performing the touch point learning of non-driveshaft.

A controller includes: an automatic shifting control section that carries out automatic shifting control in which a shifting actuator is driven in response to a predetermined automatic shifting command; and an assist control section that, when a predetermined assist condition is met, carries out assist control in which the shifting actuator is driven to assist motion of a manual shifting power transmission mechanism actuated upon operation of a shifting operation member by a driver.

A power transmission device for a hybrid vehicle with a first clutch (1a) and a second clutch (1b). The first clutch (1a) is capable of transmitting or cutting off driving power of an engine (E) to driving wheels (D). The second clutch (1b) is capable of transmitting or cutting off power of a motor (M) to the driving wheels (D). The power transmission device is capable of appropriately operating the first clutch (1a) and the second clutch (1b) in accordance with driving conditions of the vehicle. When the engine (E) is started by transmitting power from the motor (M) to the engine (E), via the first clutch (1a) and the second clutch (1b), the power transmission device slip-controls the first clutch (1a) and the second clutch (1b).

A power transmission device for a hybrid vehicle with a first clutch (1a) and a second clutch (1b). The first clutch (1a) is capable of transmitting or cutting off driving power of an engine (E) to driving wheels (D). The second clutch (1b) is capable of transmitting or cutting off power of a motor (M) to the driving wheels (D). The power transmission device is capable of appropriately operating the first clutch (1a) and the second clutch (1b) in accordance with driving conditions of the vehicle. When the engine (E) is started by transmitting power from the motor (M) to the engine (E), via the first clutch (1a) and the second clutch (1b), the power transmission device slip-controls the first clutch (1a) and the second clutch (1b).

A clutch control method of the vehicle provided with the double clutch transmission may include determining, by the controller, whether a vehicle is travelling at the lowest shifting stage or the highest shifting stage and the pre-engagement of a proximate shifting stage is completed or not; storing a learned driveshaft clutch torque and a current clutch temperature and initiating a timer when it is determined that the learned driveshaft clutch torque is considered reliable by the controller learning the driveshaft clutch torque; determining, by the controller, a plurality of conditions including the passage of time to determine whether a touch point learning of the non-driveshaft clutch is necessary or not; and disengaging, by the controller, the proximate shifting stage of the non-driveshaft to neutral when it is determined that the touch point learning is necessary and performing the touch point learning of non-driveshaft.