Abstract: A dual clutch arrangement for a transmission that is provided with a first input shaft and a second input shaft has a clutch housing that is connectable to a drive train in a rotationally fixed fashion. The first and second friction clutches can transmit a torque between the clutch housing and the first and the second input shafts, respectively. The first and second friction clutches are nested in the radial direction with respect to each other and actuated by a first and a second actuating unit that have pistons for pressuring clutch disk packs. The compressive force exerted by the piston of the first actuating unit and the compressive force exerted by the piston of the second actuating unit are directed in axially opposite directions with respect to each other.

Abstract: A gear shift mechanism of a gear shift transmission having a plurality of gears is described. A first movable gear shift fork and at least one second movable gear shift fork are provided for engaging gears of the gear shift transmission and assuming a neutral position as well as an engaged position where a gear allocated to a respective one of the first and second gear shift forks is engaged. A locking mechanism comprising a locking element is provided that prevents that both gear shift forks can assume at the same time unintentionally an engaged position. The locking mechanism is designed such that in a locking position a force for moving the first gear shift fork out of its neutral position does not generate a resulting component of force that would force the locking element against the second gear shift fork.

Abstract: A dual clutch arrangement for a transmission that is provided with a first input shaft and a second input shaft has a clutch housing that is connectable to a drive train in a rotationally fixed fashion. The first and second friction clutches can transmit a torque between the clutch housing and the first and the second input shafts, respectively. The first and second friction clutches are nested in the radial direction with respect to each other and actuated by a first and a second actuating unit that have pistons for pressuring clutch disk packs. The compressive force exerted by the piston of the first actuating unit and the compressive force exerted by the piston of the second actuating unit are directed in axially opposite directions with respect to each other.

Abstract: The present invention relates to a hybrid drive train for a motor vehicle, comprising a clutch arrangement having a first rotatable clutch part and a second rotatable clutch part, which clutch parts can be separated from one another and which can be connected to one another, and comprising an electrical machine which is arranged concentrically with respect to the first clutch part and has a rotor, wherein the rotor is connected with the first clutch part and comprises a plurality of magnetic flux influencing portions, the magnetic flux influencing portions being arranged distributed over the circumference of the rotor with a predetermined rotor pitch. Here, the first clutch part comprises a shaft toothing that is adapted to the rotor pitch.

Abstract: The present invention relates to a hybrid drive train for a motor vehicle, comprising a clutch arrangement having a first rotatable clutch part and a second rotatable clutch part, which clutch parts can be separated from one another and which can be connected to one another, and comprising an electrical machine which is arranged concentrically with respect to the first clutch part and has a rotor, wherein the rotor is connected with the first clutch part and comprises a plurality of magnetic flux influencing portions, the magnetic flux influencing portions being arranged distributed over the circumference of the rotor with a predetermined rotor pitch. Here, the first clutch part comprises a shaft toothing that is adapted to the rotor pitch.

Abstract: A gear shift mechanism of a gear shift transmission having a plurality of gears is described. A first movable gear shift fork and at least one second movable gear shift fork are provided for engaging gears of the gear shift transmission and assuming a neutral position as well as an engaged position where a gear allocated to a respective one of the first and second gear shift forks is engaged. A locking mechanism comprising a locking element is provided that prevents that both gear shift forks can assume at the same time unintentionally an engaged position. The locking mechanism is designed such that in a locking position a force for moving the first gear shift fork out of its neutral position does not generate a resulting component of force that would force the locking element against the second gear shift fork.

Abstract: In a gearshift device for change-speed gearboxes of motor vehicles, having a shifter shaft (1) movable both axially and radially in the gearbox housing and engaging at one end with an actuating lever arrangement (3) with which in turn corresponding ends of a gearshift linkage or of Bowden gearshift cables engage, substantially parallel to the shifter shaft (1) a supporting pin (6) projecting from the gearbox housing or from a closing plate (2) and having a ball-and-socket joint (7) with only two degrees of twisting freedom is provided, on which is supported a three-armed actuating lever (8), the three arms (9, 10 and 11) of which are disposed perpendicular to each other in the manner of orthogonal axes of coordinates, one of said arms (9) being connected by way of a ball-and-socket joint (12) to a pin (4) projecting radially from the shifter shaft (1) and the two other said arms (10 and 11) being connected by way of their ball-and-socket joints (13 and 14) to the corresponding ends of a gearshift linkage or o

Abstract: In a gearshift device for a motor vehicle manual transmission, comprising a shift finger (6), located on an axially slidable and radially twistable shift shaft (1), which can be brought into engagement with grooves in shift arms of shift forks and which carries a cylindrical guide member (4), movable together with the shift finger, which co-operates with at least one spring-loaded ball catch (8), the cylindrical guide member (4) is formed of sheet material and exhibits a shift gate (9), in the form of a stamped slit, for a stationary shift pin (7), to guide the shifting movement and is provided at the outer circumference with troughs (10) extending parallel to the cylinder axis to latch with a stationary, spring loaded ball catch (8), and a part-cylindrical spring segment (11) is disposed within the cylindrical guide member (4) and is provided with a ramp-like depression (15) which co-operates with the stationary, rotatably mounted shift pin (7) to form a reverse gear shift block.