Abstract: A method for detecting a rotational direction of the secondary side of a starting clutch in a motor vehicle string comprising the steps of determination of the primary speed of rotation of the primary side and of the secondary speed of rotation of the starting clutch. If the secondary speed of rotation is greater than the primary speed of rotation, an actuator operates in a closing direction, whereby the degree of closure of the starting clutch is adjusted to be dependent upon the acceleration of the secondary speed of rotation. A specified value for a rotational speed of the driving motor is produced which represents the secondary speed of rotation. To the extent that this value exceeds the value of the primary rotational speed, the rotational speed of the motor is regulated to the specified value. If the primary and secondary rotational speeds are equivalent within a preselected period of time, then detecting the same rotational direction for the primary and secondary sides of the starting clutch.

Abstract: A motor vehicle for controlling an automatic gearshift stepped variable speed transmission that can be driven by a drive engine, in which, depending on an accelerator pedal position and an engine speed, upshifts or downshifts between the gear steps are triggered automatically and in which a kick-down switch is present. In a first speed range below a first boundary speed (n1) actuation of the kick-down switch triggers a downshift. For one or more upper gear steps in a second engine speed range above a second boundary speed (n_KD_Schw), even at high loads, no downshifts is triggered and an upshift is only triggered by actuation of the kick-down switch.

Abstract: In an automated multi-group transmission consisting of one front-mounted group, one main group and one range group and in which the front-mounted group transmission and the range group transmission comprise a first shifting position for a low-speed total transmission ratio, a second shifting position for a high-speed total transmission ratio and a third shifting position as neutral position for interrupting the torque transmission, in a gear-shifting method for gear change, the range group transmission and the front-mounted group transmission are simultaneously brought to their respective neutral shifting position, which makes it possible to shift a deceleration of the main transmission. With the start of the gear-shifting process in the neutral positions, there also begins the control of the engine rotational speed to the total ratio of the target gear.

Abstract: A method for controlling the gear release in an automated multi-speed drive in a vehicle drive with a drive motor and a separating clutch positioned between the drive motor and the multi-speed drive that the events “application of a shifting power” and “opening of the separating clutch” are determined dependent on reaching certain vehicle accelerations (agear—release, aclutch—engage). The vehicle acceleration (aveh) decreases at the beginning of the shifting process due to the reduction of the fuel injection quantity (EM) supplied to the drive motor.

Abstract: With a drive arrangement of a motor vehicle with a drive motor (2) actuated by means of E-gas and a manual gear shift (10), which is operationally connectable electively with the output shaft (4) of the drive motor (2) by a disconnection-type clutch, which can be manually activated by the driver, the rotational speed of the output shaft (4) of the drive motor (2) is adjusted to a desired rotational speed which depends upon the rotational number of the input shaft (8) of the gear shift (10) as long as the clutch is open.

Abstract: Control of shiftable clutches by a clutch control signal that is a function of the difference between the actual and desired engine rotational speeds and of the gradient of the actual engine rotational speed and wherein the clutch control signal values are generated by the employment of a set of clutch engagement and disengagement speed curves.