Abstract: A traction drive of an internal combustion engine and a method for operating same. In two drive planes the traction drive includes an auxiliary drive (1) and a starter (7) and enables, in addition to a normal operating mode, the following operating modes: starting of the internal combustion engine, boosting of the internal combustion engine, auxiliary air conditioning and decoupling of the auxiliary drive (1).

Abstract: A tensioning device (11) for a traction mechanism drive (1) which is arranged on an internal combustion engine and includes a drive wheel (3) arranged on a drive shaft (30) of an engine (4), one or more additional driving wheels (5, 6), and a continuously revolving traction element (2), which wraps around the drive wheel and additional driving wheels. The tensioning device has two tensioning arms (13, 14) having tensioning wheels (9, 10) mounted thereon, which apply a tensioning force to the traction element in front of and behind the drive wheel in the direction of revolution, and is provided with a spring (16) generating the tensioning force, and a tensioner housing (12), which movably mounts at least one of the tensioning arms to which the force of the spring means is applied. The tensioner housing is mounted on the engine pivotably about the axis (29) of the drive shaft.

Abstract: A tensioning device (2) is provided for a starter generator drive belt of an internal combustion engine and a starter generator (1) equipped with such a tensioning device. It includes a tensioning housing (8, 8a, 8b) with two belt pulleys (6, 7) and a bearing support (9) fastened at the machine housing (3) of the starter generator, on which the tensioning housing is pivotally supported via a friction bearing.

Abstract: A tensioning device (2) for a starter generator belt drive of an internal combustion engine and a starter generator (1) with such a tensioning device. The tensioning device is to be supported on the machine housing (3, 3?) of the starter generator by a slide bearing.

Abstract: A device for connecting a generator to a belt drive of an internal combustion engine is provided, which includes a belt pulley (1) that is guided so that it can rotate relative to a hub (2) set on a shaft (3). At least one spring element is arranged between the belt pulley (1) and the hub (2) and connects the belt pulley (1) and the hub (2) to each other elastically for transferring rotational motion and here sets a relative rotation between the belt pulley (1) and the hub (2) corresponding to an effective torsional stiffness. The at least one spring element is placed with a defined movement play (s) with respect to the belt pulley (1) and/or the hub (2), in order to allow relative rotation through the movement play (s) in a first region (I) with a low torsional stiffness, while, in a second region (2), a high torsional stiffness can be generated by the at least one spring element.

Abstract: A torque-transmission system with a decoupler (1) between a shaft (2) and a belt pulley (3) of a starter generator is provided. The belt pulley can rotate relative to the shaft (2). For reducing rotary oscillations, the decoupler (1) includes a damping device arranged between the belt pulley (3) and the shaft (2) with at least one spring element (5). The decoupler (1) includes an automatic locking device (7) that is dependent on a direction of rotation and that produces, at a low rotational speed level, a coupling between the belt pulley (3) and the shaft (2), and this coupling automatically disconnects when a pre-determined rotational speed is reached.

Abstract: A device for connecting a generator to a belt drive of an internal combustion engine is provided, which includes a belt pulley (1) that is guided so that it can rotate relative to a hub (2) set on a shaft (3). At least one spring element is arranged between the belt pulley (1) and the hub (2) and connects the belt pulley (1) and the hub (2) to each other elastically for transferring rotational motion and here sets a relative rotation between the belt pulley (1) and the hub (2) corresponding to an effective torsional stiffness. The at least one spring element is placed with a defined movement play (s) with respect to the belt pulley (1) and/or the hub (2), in order to allow relative rotation through the movement play (s) in a first region (I) with a low torsional stiffness, while, in a second region (2), a high torsional stiffness can be generated by the at least one spring element.

Abstract: A shaft-hub connection (10) between a belt pulley (14) and a shaft (16), in particular, between a belt pulley and the generator shaft of a belt-driven starter generator, wherein the belt pulley (14) has a decoupler shaft (12) and the generator shaft (16) has a coaxial thread (20) that is connected to the decoupler shaft (12) for transmitting torque. The connection between the decoupler shaft (12) and the thread (20) of the generator shaft (16) is secured against loosening. In addition, a belt-driven starter generator with such a shaft-hub connection is provided.

Abstract: The decoupler for a drive wheel arrangement for an auxiliary unit of an internal combustion engine has a belt pulley connected to a flexible drive element and a shaft. A damping device is arranged between the shaft and the belt pulley and includes a spring. The belt pulley is connected to a damper cage, which is connected via at least one spring to a damper cage which is positioned such that it can rotate on the shaft.

Abstract: A method implements a starting process for an internal combustion engine which has a drive unit and a transmission with at least two transmission input shafts and a multiple clutch device, in particular a double clutch device. During the starting process, the first gear is engaged in a first clutch of the multiple clutch device and is activated, while the second gear speed is engaged in a second clutch of the multiple clutch device but not activated. During the starting process, a current velocity is compared with a predefinable reference velocity, and when the reference velocity is reached a control unit causes the first clutch to be opened and thus causes the first gear to be deactivated while, in parallel with this, the second clutch is closed and the second gear is thus activated.

Abstract: A torque-transmission system with a decoupler (1) between a shaft (2) and a belt pulley (3) of a starter generator is provided. The belt pulley can rotate relative to the shaft (2). For reducing rotary oscillations, the decoupler (1) includes a damping device arranged between the belt pulley (3) and the shaft (2) with at least one spring element (5). The decoupler (1) includes an automatic locking device (7) that is dependent on a direction of rotation and that produces, at a low rotational speed level, a coupling between the belt pulley (3) and the shaft (2), and this coupling automatically disconnects when a pre-determined rotational speed is reached.

Abstract: The invention relates to a drive wheel (1) of an auxiliary unit belt drive of an internal combustion engine, having a running casing (2) which is operatively connected to a traction mechanism, having a hub (3) which is rotationally fixedly connected to the drive axle of an auxiliary unit, and having a damping device (4), which is arranged so as to act between the running casing (2) and the hub (3), for reducing rotary oscillations, with the damping device (4) comprising a spring store (5) which is arranged so as to act between the running casing (2) and the hub (3). In order that the running casing can be produced more economically, the invention provides that the running casing (2) is composed of a running part (6), a driver part (7) and a spring receptacle (8), with the running part (6) being rotationally fixedly and permanently connected to the driver part (7), and wherein the driver part (7) can be or is connected in a form-fitting manner to the spring receptacle (8).

Abstract: The decoupler for a drive wheel arrangement for an auxiliary unit of an internal combustion engine has a belt pulley connected to a flexible drive element and a shaft. A damping device is arranged between the shaft and the belt pulley and includes a spring. The belt pulley is connected to a damper cage, which is connected via at least one spring to a damper cage which is positioned such that it can rotate on the shaft.

Abstract: A method implements a starting process for an internal combustion engine which has a drive unit and a transmission with at least two transmission input shafts and a multiple clutch device, in particular a double clutch device. During the starting process, the first gear is engaged in a first clutch of the multiple clutch device and is activated, while the second gear speed is engaged in a second clutch of the multiple clutch device but not activated. During the starting process, a current velocity is compared with a predefinable reference velocity, and when the reference velocity is reached a control unit causes the first clutch to be opened and thus causes the first gear to be deactivated while, in parallel with this, the second clutch is closed and the second gear is thus activated.