Abstract: A pivot actuator (1), comprising: a housing (2); a piston (3) that is supported in the housing (2) and displaceable along a longitudinal axis (7) of the housing; a drive shaft (4) that protrudes from the housing (2) wherein the piston (3) engages the drive shaft (4) by form locking so that the drive shaft (4) is pivoted about a drive axis (8) by a pivot angle (10) to an end position through a displacement of the piston; and a switching cam (11, 26) that is fixed torque proof at the drive shaft (4) and configured to contact a stop element (5) at the housing (2) with a convex stop surface (18) at the switch element, wherein the end position is adjustable by an adjustment angle (25) about the drive axis (8) by displacing the stop element (5) along an adjustment axis (20) transversal to the drive axis (8), characterized in that the stop surface (18) follows an involute (22) of a circle (23) about the drive axis (8) wherein the involute is arranged in a direction transversal to the drive axis (8) so that the circl

Abstract: A pivot actuator comprising: a housing; a piston supported in the housing; a drive shalt protruding from the housing wherein the piston engages the drive shaft to rotate the drive shaft about a drive axis by a pivot angle between two end positions; and a switching cam coupled to the drive shaft and configured to contact a stop element in the two end positions, wherein the switching cam includes two discs arranged adjacent to one another along the drive axis.

Abstract: A pivot actuator includes a housing, a drive shaft rotatably coupled to the housing, a piston within the housing and configured to engage the drive shaft so that movement of the piston along a longitudinal axis of the housing causes the drive shaft to pivot in a first direction about a drive axis within a first pivot angle to a first end position, a first stop element configured to adjustably select the first end position, and a switching cam configured to be coupled to and pivot with the drive shaft about the drive axis. The switching cam includes a first disc having a first stop surface configured to contact the first stop element to limit rotation of the drive shaft in the first direction about the drive axis to the first end position, wherein the first stop surface includes a first convex stop surface.

Abstract: A pivot actuator (1), comprising: a housing (2); a piston (3) that is supported in the housing (2) and displaceable along a longitudinal axis (7) of the housing; a drive shaft (4) that protrudes from the housing (2) wherein the piston (3) engages the drive shaft (4) by form locking so that the drive shaft (4) is pivoted about a drive axis (8) by a pivot angle (10) to an end position through a displacement of the piston; and a switching cam (11, 26) that is fixed torque proof at the drive shaft (4) and configured to contact a stop element (5) at the housing (2) with a convex stop surface (18) at the switch element, wherein the end position is adjustable by an adjustment angle (25) about the drive axis (8) by displacing the stop element (5) along an adjustment axis (20) transversal to the drive axis (8), characterized in that the stop surface (18) follows an involute (22) of a circle (23) about the drive axis (8) wherein the involute is arranged in a direction transversal to the drive axis (8) so that the circl

Abstract: The invention relates to a pivot actuator (1), comprising: a housing (2); a piston (3) that is supported in the housing (2) and displaceable along a longitudinal axis (7) of the housing; a drive shalt (4) that protrudes from the housing (2) wherein the piston (3) engages the drive shaft (4) by form locking so that the drive shaft (4) is pivoted about a drive axis (8) by a pivot angle between two end positions through a displacement of the piston; and a switching cam (11) that is fixed torque proof at the drive shaft and configured to contact a stop element (5) at the housing (2) with a respective contact surface (ill) of the switch cam in the two end positions, characterized in that the switching cam (11) includes two discs (15) that are arranged adjacent to one another along the drive axis (8), wherein one respective contact surface (18) of the two contact surfaces (18) is arranged at each of the two discs (15) respectively.

Abstract: A method includes checking whether an electromagnetically actuated gas injector arranged in an internal combustion engine between a fuel source and a combustion chamber is in the closed end position thereof. According to the method, an electric test voltage is applied to the gas injector and the discharge current generated by the electric test voltage is measured.

Abstract: The invention relates to a method for checking whether an electromagnetically actuated gas injector (1) arranged in an internal combustion engine between a fuel source and a combustion chamber is in the closed end position thereof. According to said method, an electric test voltage is applied to the gas injector (1) and the discharge current (I) generated by the electric test voltage is measured.

Abstract: Ignition device for an internal combustion engine comprising an ignition coil which is feedable on its primary side by a voltage supply unit and a secondary current measuring device for measuring the course of the secondary side current and a control device for at least temporary controlling of the primary side voltage or the primary side current in dependence on the measured course of the secondary side current, wherein, subsequent to an interruption of the primary side voltage or current supply of the ignition coil during an ignition process or subsequent to the drop of the primary side voltage or the primary side current in the ignition coil below a predeterminable threshold during the ignition process, said control device energises or regulates the primary side voltage or current supply of the ignition coil above the predeterminable threshold only when the secondary side current induced thereby acts in the direction of the predetermined course of the secondary side current.

Abstract: An Ignition device for an internal combustion engine comprising a control device and an ignition coil which is feedable on its primary side by a voltage supply unit, wherein said control device is provided to interrupt or reduce the voltage impressed on the primary side of the ignition coil when a magnitude of a magnetic induction B on the primary side of the ignition coil is greater than a predeterminable maximum value.

Abstract: A spark plug connector (2), in particular for large engines, with an inductive interference suppression device (3) which has a ferromagnetic core (14) with at least one winding (13), preferably a coil, and an ohmic d.c. resistance of at least 20 ? at 20° C.