Abstract: In a valve operating device for an internal combustion engine with at least one actuating device which is provided to adjust an axially displaceable cam element by means of at least one slotted guide track, the valve operating device comprises a safety unit for moving the axially displaceable cam element in at least one operating mode into a defined basic safety position.

Abstract: In an internal combustion engine valve drive train switching arrangement with a switching unit, the switching unit includes at least two control structure arranged at adjacent ends of at least two switching devices of the actuating units and an actuating unit cooperating with at least one control track formed by the switching devices of the actuating unit.

Abstract: In an internal combustion engine valve drive train switching device, at least one safety device is provided for preventing an unscheduled switching of a valve train switching unit.

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 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 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 injector for an accumulator injection system comprising an injector having an injector housing with an injection nozzle and an actuator for operating the injection nozzle arranged in a fuel-filled pressure space of the injector housing wherein the actuator includes a piezoelectric element disposed between an actuator head and an actuator the base with a fuel-tight casing at least partially surrounding the actuator head and the actuator base, the casing is engaged in a sealing fashion by a first annular element with the actuator base and by a second annular element with the actuator head.

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 balance shaft for a multi-cylinder in-line engine with at least two imbalance weight sections and at least one bearing structure wherein the balance shaft has imbalance weight sections being arranged symmetrically relative to the bearing position and at least one of the imbalance weight sections is connected to a further shaft section at an end facing away from the bearing position, a flexible coupling element that enables a deflection of the end of the connected imbalance weight section in the direction of the resulting centrifugal forces when the balance shaft rotates is provided between the end of the at least one imbalance weight section facing away from the bearing position and the further shaft section.

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 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 camshaft adjusting device for adjusting a phase position of a camshaft, including a rotary actuator having a stator and at least one axially displaceable rotor and including a gear mechanism which is arranged operatively between two of at least three shafts, one of the shafts being a control shaft which is acted upon by the rotary actuator, one of the shafts being a drive shaft which is connected to the crankshaft, and one of the shafts being an output shaft which is connected to the camshaft, a compact locking structure is provided whereby at least two of the at least three shafts can be locked to one another in a rotationally fixed manner by a spring depending on operating conditions and released by an auxiliary coil which, upon energization, provides for axial movement of the rotor out of its locked position to permit adjustment thereof.