Abstract: A tensioning device for a chain drive of an internal combustion engine, having a support member (1) which is pivotally mounted thereupon and is axially snapped onto and retained on a bearing journal (4) of the support member (1) via a bearing lug (5). The support member (1) is formed as a deep-drawn sheet metal component and is formed in a single piece with the bearing journal (4). The bearing journal (4) is provided with a cup-shaped hollow form. The tensioning rail (2) is axially secured to the support member (1) by a wrap-around (12).

Abstract: A device for electrically adjusting the relative rotation of two shafts, particularly a camshaft (15) in relation to a crankshaft of an internal combustion engine is provided. The adjusting device includes an adjusting gear system which is embodied as a triple-shaft gear mechanism and is provided with a crankshaft-fixed input part, a camshaft-fixed output part, and an adjusting shaft (13) that is connected in a torsion-proof manner to an electric adjusting motor shaft (32) of an electric adjusting motor (3). The adjusting motor (3) is configured as a brushless DC motor having a housing-fixed stator (35) and a permanent magnet rotor (34). A high degree of adjustment accuracy and adjustment speed are provided with minimal space requirements and low power consumption.

Abstract: A locking device is provided with a locking finger (12), the locking finger (12) being provided with a clearance space (12a).

Abstract: In a linear rolling bearing comprising a guide carriage (1) that can be mounted through rolling bearing rollers (7) on a guide rail (2), said guide carriage (1) comprising at least one endless roller channel (8) for the rollers (7), said roller channel (8) comprising a load-bearing channel (9) for load-bearing rollers (7), a return channel (10) for returning rollers (7) and two deflecting channels (11) that connect the load-bearing channel (9) and the return channel (10) to each other, said guide carriage (1) further comprising a carrier body (3) in which said return channel (10) and said load-bearing channel (9) are arranged, and, on two front ends of the carrier body (3), end members (4) in which said deflecting channels (11) are arranged, said return channel (10) comprising a return tube (27) whose tube ends are connected to said end members (4), and said roller channel comprising raceways for the rollers and side surfaces for laterally delimiting the roller channel, the return tube (27) comprises tongues

Abstract: A tensioner for a traction member includes a faceplate that is stationarily secured to a machine part, with a working eccentric member rotatably supported on the faceplate for limited rotation against a spring force. After pre-installation of the tensioner, a locking device fixes the position of the working eccentric member relative to the faceplate. In one installation position, a catch limits the pivot range of the working eccentric member.

Abstract: A tensioner for a traction drive to maintain a belt under tension includes a base part and a pivot arm connected to the base part for swinging about a rotation axis and having a free end for rotatable arrangement of a roller which is supported on the power transmitting member. A torsion spring acts on the pivot arm for urging the roller against the belt and applies an axial force on a damping unit for damping an adjusting movement of the pivot arm. The damping unit includes a slitted friction bushing constructed to have a wedge ring with conical inner and outer surfaces for formfitting engagement in a circular ring shaped recess of the base part or the pivot arm. The recess has contact surfaces to complement the inner and outer surfaces of the friction bushing for formation of two conical contact zones.

Abstract: An electromagnetic hydraulic valve (1), which including an electromagnet (2) with an armature (3) and of a valve housing (4) with an axial bore (5) and a piston valve (6) located therein is provided. The valve housing (4) includes several annular grooves (8, 9, 10) in which several radial openings (11, 12, 13) are located, which open into the axial bore (5), through which the hydraulic valve (1) has a fluid connection with a pressure connection (P), a tank connection (T) and two consumer connections (A, B). The piston valve (6) is acted upon by the armature (3) of electromagnet (2) and includes two ring-shaped control sections (14, 15), which connect alternatively the pressure connection (P) and the tank connection (T) with one of the consumer connections (A, B) through axial movement of piston valve (6). According to the invention, the radial openings (11, 12, 13) in valve housing (4) are provided as windows having a rectangular cross section.

Abstract: A device for increasing a selection force is integrated into a support arrangement of a shift lever. The device is pivotable around a pivot axis and also around a tilt axis aligned transversely to the pivot axis. The selection force upon pivoting movements of the shift lever around the tilt axis is produced by at least one lever that is movable against a spring and a runoff roller placed in operative connection with the lever (24, 38). The device is integrated into a support arrangement for pivotable support of the shift lever by a casing in a housing. The support arrangement supports the shift lever pivotably with respect to the casing around the pivot axis and also supports the shift lever with the casing pivotably with respect to the housing around the tilt axis aligned transversely to the pivot axis.

Abstract: A device for controlling cylinder disconnection in internal combustion engines, with a control device which permits in one of its two switching states an actuation of the valve concerned, with transmission devices which, in dependence on the switching state of the control device, transmit the cam stroke to the valve, and with a control unit acting on the control device. This provides a high switch over reliability with only small requirements for the changeover technology used. For this, the device has a data memory for the detection of the time course of the movement behavior of the gas exchange valves of cylinders of the internal combustion engine, and a data processing unit which provides a combination of gas exchange valves into valve groups with regard to a common activation or deactivation.

Abstract: A hydraulic device in an internal combustion engine for adjusting a rotation angle of a camshaft in relation to a crankshaft includes a tubular stator and a rotor connected in fixed rotative engagement with the camshaft and having plural vanes in spaced apart relationship to define pressure chambers on both sides of the vanes. The stator is connected in fixed rotative engagement with a crankshaft-drive timing pulley and constructed to define with the rotor vanes the pressure chambers. The stator is made by a shaping process without material to effect a mass reduction. Pressure medium is supplied to or purged from the pressure chambers to selectively adjust the position of the rotor in relation to the stator and thereby the position of the camshaft in relation to the crankshaft.

Abstract: A switching element (1) for a valve drive of an internal combustion engine is provided, preferably for deactivating a valve. The switching element has an outer section (2), in addition to an inner element (4) that can be axially displaced in a bore (3) of the outer section. The outer section (2) and the inner element (4) are displaced away from one another by action of lost-motion spring elements (5) and can be coupled together in an axially-distant relative position, whereby at least one piston (6), which is situated in a bore (7) that runs transversally through the inner element (4), acts as a coupling element. An annular groove (8), into which the piston (6) can be partially displaced to adopt its coupling position, is located in the bore (3) of the outer section (2).

Abstract: A linear drive comprising a housing and a rail, which is mounted on the housing such that they can move relatively. Drive elements on the housing and on the rail to produce relative movement between the housing and the rail. The housing has a braking device to interact with a brake track provided on the rail. The brake track is in a groove in the rail. Anti-friction elements between the housing and the rail ride in the groove.

Abstract: A hydraulic device in an internal combustion engine for adjusting a rotation angle of a camshaft in relation to a crankshaft includes a tubular stator and a rotor connected in fixed rotative engagement with the camshaft and having plural vanes in spaced apart relationship to define pressure chambers on both sides of the vanes. The stator is connected in fixed rotative engagement with a crankshaft-drive timing pulley and formed in single-piece construction with an end wall to thereby exhibit a pot-shaped structure. The pot is made without material removal from a sheet metal part and constructed to define with the rotor vanes the pressure chambers. Pressure medium is supplied to or purged from the pressure chambers to selectively adjust the position of the rotor in relation to the stator and thereby the position of the camshaft in relation to the crankshaft.

Abstract: A bearing (3) for fixing a steering shaft (1) in a housing (4) is characterized in that the inner bearing ring (8) comprises, in at least one axial direction, an integrally formed cylindrical extension (11) adjoining the raceway (9), and the inner bearing ring (8) is pressed onto the steering shaft (1) with this cylindrical extension (11) which comprises through-holes (12) through which a locking ring (13) positively engages a groove (26) of the steering shaft (1).

Abstract: A hydraulically actuated, preferably variable, valve drive of an internal-combustion engine is provided, with a slave unit (15), which is embodied as a separate component relative to a master unit. A special characteristic is that the slave unit is provided with a hydraulic backlash compensation element (9), which is connected to a path (12) for feeding hydraulic medium only outside of a stroke phase of a slave piston (5). As a result, on one hand an easy-to-produce valve drive with slave unit (15) is provided. On the other hand, unnecessary “pumping up” of the backlash compensation element (9) during the stroke phases of the slave piston (5) is prevented by the previously mentioned admission of hydraulic medium.

Abstract: A tensioner for a traction drive includes a cylinder arranged in a housing at a distance to a housing wall to thereby define an interior space which contains hydraulic fluid. A piston is received in the cylinder for back-and-forth movement and bounds a pressure chamber containing hydraulic fluid. The piston has a cylinder-distal end which is operatively connected to a spring-biased tension roller supported on a traction member. Formed between the piston and the cylinder is a leakage gap, and a reservoir for hydraulic fluid is provided in an area of the leakage gap to prevent ingress of air into the pressure chamber, when the traction drive is at a rest.

Abstract: A linear rolling bearing has a guide carriage (1) that is U-shaped in cross-section and has two U-legs (6). The guide carriage (1) is slidably supported through balls (3) on two longitudinal sides of a guide rail (2). Each U-leg (6) comprises on an inner surface opposing the guide rail (2) a ground raceway (10) for the balls (3). The raceway (10) is made by a grinding wheel whose diameter is larger than the diagonal dimension of the carriage cavity (7). According to the invention, a stop surface (12) having a retaining contour for a guide member (4) containing the balls (3) is configured on a guide rail-distal outer surface of each U-leg (6) of the guide carriage (1), and the raceway (10) on one of the two U-legs (6) and the stop surface (12) having the retaining contour on the other of the two U-legs (6) are made in common in one work step by the grinding wheel.

Abstract: A finger lever (1) of a valve train of an internal combustion engine, said finger lever (1) being switchable to different valve lifts for at least one gas exchange valve and comprising an outer lever (2) having two arms (3a, 3b) between which an inner lever (4) is arranged for pivoting relative to the outer lever (2), which outer and inner levers (2, 4) can be coupled to each other by a coupling means (15), the outer lever (2) comprising on one closed end (5), a support (5a) for a gas exchange valve and the finger lever (1) comprising on an opposite end (6), a complementary surface (7, 30) for a support element, the inner lever (4) having a fulcrum (10) in a region of the opposite end (6), and at least this inner lever (4) comprising a contact surface (11) for a cam whereby in the finger lever (1), the outer lever (2) has a substantially open fork-like configuration, the contact surface (11) for the cam on the inner lever (4) is configured as a rotatable roller (12) and the coupling means (15) comprises at le

Abstract: In a linear antifriction bearing comprising a guide rail (1) which has a U-shaped cross section and on whose inner side raceways (4) parallel to the rail longitudinal direction are arranged, and comprising a running carriage (2) which can be displaced longitudinally and is supported by rolling elements (3) on the raceways (4) inside the guide rail (1), the rolling elements (3) are arranged in a plurality of endless tracks on a supporting body (5) of the running carriage (2). According to the invention, the supporting body (5) has an opening parallel to the raceways (4), and return channels are formed by a filling body (8) which is arranged in the opening and which has recesses (15) which run in the longitudinal direction to accommodate returning rolling elements (3).

Abstract: The invention relates to an internal-combustion engine with a hydraulic device (1) for rotation angle adjustment of a camshaft (3) relative to a crankshaft thereof, which is arranged on the drive-side end (2) of the camshaft (3) supported in several radial bearings (4) in the cylinder head (5) of the internal-combustion engine. The device essentially includes a drive unit (6) drivingly connected with the crankshaft and also of a driven unit (7) rotationally fixed to the camshaft (3).