Abstract: In an internal combustion engine valve drive switching device with a switching unit, the switching unit includes an implementation unit for implementing a first switching process based on at least one signal and thereafter, to implement a second switching process independently of an electronic evaluation.

Abstract: In an actuating device with at least one electrical or electromagnetic actuation unit, at least two activation sequences performed by different actuation elements of the actuation unit are associated with at least two different electrical and/or electromagnetic states of the actuation unit via electric coil units energized by current flowing in different flow directions.

Abstract: In an internal combustion engine valve drive train switching arrangement with a switching unit, the switching unit has at least one actuating unit with at least two switching members and at least one switching device for actuating the two switching members independently in an at least partial chronological offset, so as to perform a first switching process based on a first signal and then a second switching process, independently of an electronic evaluation.

Abstract: In a camshaft adjusting device including a positioning actuator for adjusting a phase position of a camshaft with respect to a crankshaft of an internal combustion engine, wherein the camshaft is driven by the crankshaft via a drive input, and a base drive torque of the camshaft is provided by a positioning actuator, a spring element is arranged between the camshaft and the crankshaft and has a spring torque selected so as to compensate for at least part of a mean load torque of a load unit connected to the camshaft to be driven thereby and at most only a part of the base drive torque.

Abstract: In a device for adjusting the phase angle between two rotating, drive-connected elements, which are interconnected by means of an adjustment device, a control arrangement is provided for the energy-saving adjustment of the phase angle based on an alternating torque of one element which is also used in the event of a fault, to provide for an emergency operation in which the relative angular phase position between the two elements is kept essentially constant.

Abstract: In an adjusting apparatus, particularly for an internal combustion engine having cylinders arranged in an engine block, with a crankshaft and with pistons movably disposed in the cylinders, the adjusting apparatus includes a pick-up which causes an adjustment of an adjustable device, and an adjusting element which is operatively connected to the pick-up, the adjusting element being arranged movably on an adjusting shaft (9) which can be moved by an actuator translationally with a cone as adjusting element or rotationally with an eccentric (8) as adjusting element.

Abstract: In a stroke-transmitting device for a variable transmission of an operating stroke to a member to be actuated, specifically a gas exchange valve for an internal combustion engine, including a control unit with first and second control structures, a control cam coupling the first and second control structures and having different control regions which are displaceable for an adjustment of the stroke of the member to be actuated with at least first and second degrees of freedom for controlling the stroke transmitted to the member to be actuated.

Abstract: In an internal combustion engine including cylinders arranged in a housing, a crankshaft, pistons disposed in the cylinders so as to be movable by the crankshaft, and a device for varying a compression ratio of the internal combustion engine wherein the device, for varying the compression ratio, includes an adjusting structure which varies the effective length of a connecting rod of the piston, the lift of the crankshaft or the position of the cylinder with respect to the center of the crankshaft, an operating structure is provided by rotation of which the position of the adjusting structure can be controlled, and a drive device for controlling the operating structures contains a coupling mechanism with an integrated brake function, whereby h the adjusting structure can either be placed in operative connection with the crankshaft or can be blocked.

Abstract: In a camshaft adjusting device comprising an adjusting mechanism for adjusting the phase positions of first and second camshafts with respect to a crankshaft driving the camshaft adjusting device, the adjusting mechanism includes an adjustment input and first and second outputs connected to the first and second camshafts respectively, with first and second transmission ratios, respectively, for changing the phase angles between the drive input and the first and second outputs respectively, at different rates when the adjustment input is actuated.

Abstract: In an adjusting device for an internal combustion engine, in particular a camshaft adjusting device, an adjusting unit is provided which comprises at least one currentless sensor unit for carrying out in at least one mode an adjustment as a function of a momentary phase angle between cooperating relatively rotatable members.

Abstract: In a camshaft adjusting device for an internal combustion engine, wherein the adjustmen device includes a brake unit which has at least one eddy-current brake for generating a braking torque (Mb) which correlates with a phase angle of a camshaft, a supplementary unit is provided to at least supplement the eddy-current brake with respect to its adjusting function in at least one operating range.

Abstract: In a camshaft operating unit having a friction torque variation simulation arrangement for controlling a camshaft adjustment device with at least two camshafts one of which is at least adjustable camshaft and at least one camshaft adjusting unit, the friction torque variation simulation arrangement is provided to simulate a friction torque camshaft required to rotate the camshaft.

Abstract: In an adjusting mechanism which is connected to first and second camshafts of a camshaft drive arrangement including a control device for adjusting the phase position of at least one of the camshafts relative to a crankshaft of an internal combustion engine, and having a drive device for driving the camshaft arrangement, a first partial mechanism for driving the first camshaft and a second partial mechanism for driving the second camshaft are provided so as to be driven in parallel by means of a common drive device for adjusting the angular position of the first and second camshafts relative to the crankshaft of the engine.

Abstract: In an adjusting mechanism having an adjusting device for adjusting a phase position of a camshaft in relation to a crankshaft of an internal combustion engine, and a drive gear driven by the crankshaft, for driving the camshaft, a four-shaft transmission configured as an epicyclic summing gear train for the adjustment of the phase position of the camshaft is provided in a housing from which four shafts extend and two of them are concentric for connection to corresponding shafts of a control motor capable of applying different braking torques to the two concentric shafts.

Abstract: In a camshaft adjusting device comprising an adjusting mechanism for adjusting the phase positions of first and second camshafts with respect to a crankshaft driving the camshaft adjusting device, the adjusting mechanism includes an adjustment input and first and second outputs connected to the first and second camshafts respectively, with first and second transmission ratios, respectively, for changing the phase angles between the drive input and the first and second outputs respectively, at different rates when the adjustment input is actuated.

Abstract: In a device for adjusting the phase angle between two rotating, drive-connected elements, which are interconnected by means of an adjustment device, means are provided for the energy-saving adjustment of the phase angle based on an alternating torque of one element which is also used in the event of a fault, to provide for an emergency operation in which the relative angular phase position between the two elements is kept essentially constant.

Abstract: In an apparatus for adjusting a phase position of a camshaft in relation to a crankshaft which drives the camshaft, including an electric actuator for operating an adjustment mechanism, which can move the camshaft to a basic or emergency-operating position in the event of a shut-down as a result of an operational fault, the emergency-operating position can be reliably reached with the aid of the electric actuator which is supplied with energy by an energy supply that is separate from an operational energy supply and which is capable of moving the adjustment mechanism to the emergency-operating position. Also, a method for operating an apparatus for adjusting a phase position of a camshaft is provided.

Abstract: In an adjusting mechanism having an adjusting device for adjusting a phase position of a camshaft in relation to a crankshaft of an internal combustion engine, and a drive gear driven by the crankshaft, for driving the camshaft, a four-shaft transmission configured as an epicyclic summing gear train for the adjustment of the phase position of the camshaft is provided in a housing from which four shafts extend and two of them are concentric for connection to corresponding shafts of a control motor capable of applying different braking torques to the two concentric shafts.

Abstract: In an adjusting mechanism which is connected to first and second camshafts of a camshaft drive arrangement including a control device for adjusting the phase position of at least one of the camshafts relative to a crankshaft of an internal combustion engine, and having a drive device for driving the camshaft arrangement, a first partial mechanism for driving the first camshaft and a second partial mechanism for driving the second camshaft are provided so as to be driven in parallel by means of a common drive device for adjusting the angular position of the first and second camshafts relative to the crankshaft of the engine.

Abstract: In a motor vehicle engine and transmission support arrangement at the front end of a motor vehicle wherein the engine has a drive shaft with a drive wheel mounted thereon, and a torque converter unit with an input shaft and an input wheel mounted on the input shaft which is vertically displaced from the output shaft of the engine a power transmission structure is disposed between the drive wheel of the engine and the input wheel of the torque converter unit for transmitting the engine power to the torque converter unit.