Abstract: A secondary assembly drive of an internal combustion engine and a method for operating same are provided. The secondary assembly drive includes: a first drive wheel (1) which can be rotatably connected to a crank shaft (CR) of the internal combustion engine, an electric machine which can be operated either as a generator (AL) of as a motor (M) and a second drive wheel (2) which can be rotatably connected to the electric machine (AL, M), an air-conditioning compressor (A/C) and a third drive wheel (3) which can be rotatably connected to the air-conditioning compressor, a traction element (4) which rotates infinitely and which wraps around the drive wheels, and an actuable clutch (7) for disconnecting the drive of the electric machine and of the air-conditioning compressor from the crankshaft when necessary.

Abstract: A generator drive system for the generator (3) of an internal combustion engine (1), including a flexible drive having a traction mechanism (5) which is guided across a generator pulley (6) driving the generator (3). The generator (3) is configured and electrically wired such that the generator (3) can be temporarily driven as a motor, and the generator (3) is coupled to the generator pulley (6) or the crankshaft pulley (7) is coupled to the crankshaft (8) via an overrunning clutch (4) which allows the generator (3), when operated as a motor, running faster than the generator pulley (6) or, taking into consideration a gear ratio, the crankshaft (8).

Abstract: A secondary assembly drive of an internal combustion engine and a method for operating same are provided. The secondary assembly drive includes: a first drive wheel (1) which can be rotatably connected to a crank shaft (CR) of the internal combustion engine, an electric machine which can be operated either as a generator (AL) of as a motor (M) and a second drive wheel (2) which can be rotatably connected to the electric machine (AL, M), an air-conditioning compressor (A/C) and a third drive wheel (3) which can be rotatably connected to the air-conditioning compressor, a traction element (4) which rotates infinitely and which wraps around the drive wheels, and an actuable clutch (7) for disconnecting the drive of the electric machine and of the air-conditioning compressor from the crankshaft when necessary.

Abstract: A generator drive system for the generator (3) of an internal combustion engine (1), including a flexible drive having a traction mechanism (5) which is guided across a generator pulley (6) driving the generator (3). The generator (3) is configured and electrically wired such that the generator (3) can be temporarily driven as a motor, and the generator (3) is coupled to the generator pulley (6) or the crankshaft pulley (7) is coupled to the crankshaft (8) via an overrunning clutch (4) which allows the generator (3), when operated as a motor, running faster than the generator pulley (6) or, taking into consideration a gear ratio, the crankshaft (8).

Abstract: A process for producing a sliding bearing bush in a cast component of lightweight metal, preferably a tensioning lever of a belt tensioner. The process includes the following steps: a die, which forms the seat for a sliding bearing bush to be pressed in and has radially outer groove drawing noses, is inserted into a lightweight metal pressure die-casting die. After the liquid lightweight metal has been injected into the lightweight metal pressure die-casting die and subsequently solidified, the die is then drawn out of the lightweight metal pressure die-casting die in such a way that an aperture, which has a groove profile, is formed as a seat for the sliding bearing bush to be pressed in.

Abstract: A tensioning device for a traction mechanism, in particular a belt or a chain, is provided including a lever arm (2, 19) over which the traction mechanism is guided and on which a tensioning spring is arranged with its one end, the other end of the tensioning spring is arranged on a spring holder (6, 21), by which the tensioning device (1, 18, 30) can be fastened to an external object. A holding element (11, 22, 34), which extends from the lever arm (2, 19) to the spring holder (6, 21) and is detachably arranged on both said lever arm (2, 19) and said spring holder (6, 21), holds the tensioning device (1, 18, 30) in a position with a preloaded tensioning spring (4, 20, 33).

Abstract: The invention relates to an assembly drive or traction mechanism drive, which is designed as a belt drive, of an internal combustion engine, with one tensioning roller and/or one deflecting roller which encloses in each case one belt pulley. In the operating state of the belt pulley, a traction mechanism, which is designed as a V-ribbed belt, is guided on the running surface of the belt pulley. Here, the belt pulley of the deflecting roller has a smooth running surface against which the V-ribbed belt is supported with the profiled inner side.

Abstract: A belt drive of an internal combustion engine, wherein the belt pulleys are connected by an elastomer belt, for creating a mounting position, the belt pulley can be eccentrically pivoted about the screw connection after the screw connection has been removed whereby due to the diminishing distance between the axes of the belt pulleys, the placing of the elastomer belt in the required position is simplified.

Abstract: A drive wheel of an auxiliary unit pulley of an internal combustion engine is provided, having a rotatable sleeve which is operatively connected to a traction mechanism, having a hub which is rotationally fixed to the drive input axle of an auxiliary unit. A damping device is arranged between the rotatable sleeve and the hub for reducing torsional vibrations. In order to obtain improved damping of torsional vibrations together with increased operational reliability, the damping device (4) includes a series arrangement of a spring storage device (5) and a slip clutch (6), wherein the spring storage device (5) is arranged to act between the rotatable sleeve (2) and a driver disk (8) which is rotatably mounted on the hub (3), and the slip clutch (6) is arranged to act between the driver disk (8) and the hub (3).

Abstract: The invention relates to a tension roller (1) for a fraction drive, comprising a washer (2) mounted on an antifriction bearing and a spacer (4a). A sealing cap (13a) is provided between the washer (2) and the spacer (4a) and allows for a captivated arrangement of all components of the tension roller.

Abstract: A deflecting roller (1) for a traction mechanism drive is characterized in that a guide collar (10.5) of the spacer sleeve (10) is held by the holding bore (5.1) of the inner ring (5), and the guide collar (10.5) has a recess (10.4) in which an elastic holding element (11) is inserted, said elastic holding element (11) bearing against the holding bore (5.1) of the inner ring (5) under preload.

Abstract: A tension roller (1) for a traction drive is provided, having a running wheel (2) mounted on an anti-friction bearing and a spacer (4a). A sealing cap (13a) is provided between the running wheel (2) and the spacer (4a) and allows a captivated arrangement of all components of the tension roller.

Abstract: A tensioning device for traction means, especially for toothed belts, is provided with a tensioning arm (3) on which a tensioning roller (1) is rotatably arranged. Furthermore a stopper (12) is provided which restricts a swiveling angle of the tensioning arm (3), whereby a detachable locking device (15) is provided through which the tensioning arm (30) and the stopper (12) are locked for joint swiveling into a position provided for the stopper (12).

Abstract: A tensioner for the chain or the belt of an internal combustion engine, for example of the camshaft drive, includes a cylindrical tensioner housing (2) with a piston (1) loaded by a compression spring (13) arranged therein, the tensioner housing and the piston being axially displaceable relative to each other. The displaceable element which is displaceable relative to the fixed element in chain tensioning direction, is surrounded by a first stop ring which limits its backward movement. According to the invention, the first stop ring is configured as a retaining clip (15) whose arms engage into a locking groove (16) of the tensioner housing (2) under radial pre-stress and, upon a displacement thereof, can come to bear axially against a stop surface of the receiving housing (3).

Abstract: The proposed chain tightener is provided with a damping piston (3) in a guide bore (2). A stop ring (8) is provided between the damping piston (3) and the housing (1). The stop ring (8) cooperates with grooves (9, 17, 13) and stops (11, 10, 14) on the housing (1) and on the damping piston (3), preventing the damping piston (3) from sliding too far into the housing (1). To allow the damping piston (3) to be locked in position in the bore (2), it is proposed that the stop ring (8) should be clamped in a locking position between two contact surfaces (12, 16) on the housing (1) and damping piston (3) respectively, the contact surfaces (12, 16) being inclined in relation to the axis of the damping piston.