Abstract:
An arrangement which operates an automated transmission for use in the power train of a motor vehicle has an element which can transmit motion to a gear selecting and shifting member of the transmission. The element is reciprocable by a first actuator which can employ an electric and/or fluid-operated and/or mechanical drive and is responsive to signals from an electronic control unit. A second signal-responsive actuator can be utilized to index the gear selecting and shifting member, either directly or by way of the motion transmitting element, in order to actually shift into or from a selected gear and/or to cause the member and/or the element to bypass an obstacle which can arrest the member and/or the element in an intermediate position in order to shift into or from one or more gears in certain types of transmissions.
Abstract:
An apparatus for varying the phase of the camshaft in the combustion engine of a motor vehicle has an adjuster which is connected to the camshaft and is operable to adjust the phase of the camshaft prior and subsequent to starting of the engine. To this end, the adjuster is connected with a hydraulic drive system which can operate the adjuster while the engine is idle. Once the engine is started, the drive system receives pressurized fluid from the lubricating circuit of the engine. Prior to starting of the engine, the drive system receives pressurized fluid from a source other than the lubricating circuit or from a source which is provided in addition to the lubricating circuit. The other source is preferably the hydraulic circuit of the power steering system (such as a speed-sensitive power steering system) of the motor vehicle.
Abstract:
The phase of a camshaft in an internal combustion engine can be changed by the piston rod of a double-acting hydraulic cylinder and piston unit which is controlled by a valve having a spool movable axially by an electromagnet which is adapted to be influenced by a plurality of signals including those from the engine electronics.
Abstract:
A gearbox with an actuating device for automated shifting and selection of transmission ratios includes a gearbox operating element that is driven by an actuator. The actuator has a drive source with an output element. A swivel movement of the output element causes the gearbox operating element to shift into or out of a transmission ratio or to select one of the shift slots of a shift-gate pattern and to simultaneously apply a force to an energy-storing device. The energy-storing device acts on an intermediate element which acts on the gearbox operating element. At least one retaining element limits the actuation of the intermediate element to a predetermined position.
Abstract:
The phase of a camshaft in an internal combustion engine can be changed by the piston rod of a double-acting hydraulic cylinder and piston unit which is controlled by a valve having a spool movable axially by an electromagnet which is adapted to be influenced by a plurality of signals including those from the engine electronics.
Abstract:
A device (1) for the hydraulic adjustment of the angle of rotation of a camshaft (3) in relation to a crankshaft of an internal combustion engine, situated at the drive-side end (2) of the camshaft (3) and formed of a drive unit (4) that stands in a driven connection with the crankshaft and an output unit (5) that is connected in rotationally fixed fashion with the camshaft (3) is provided. The drive unit (4) stands in a force-transmitting connection with the output unit (5) via at least two pressure chambers (6, 7) formed inside the device (1), the supply of pressure medium to the pressure chambers (6, 7) taking place via a separate distributor housing (8) that has a connecting flange (10) suitable for transmitting pressure medium to the device (1) and a control valve receptacle (9) that is connected to the connecting flange (10) via two pressure medium conduits (11, 12). The output unit (5) is fastened non-positively to the camshaft (3), which passes through the device axially with its drive-side end (2) and has a hollow construction, the end segment (13) of the camshaft (3) being enclosed by the connecting flange (10) of the distributor housing (8) and having a plurality of radial bores (17, 18) that stand in pressure medium connection with additional radial bores (19, 20) in the camshaft (3) via a distributor insert (22) that can be placed into the hollow space (21) of the camshaft (3).
Abstract:
A ring filter comprises a frame and a filter section. The frame comprises at least two first frame elements. One of the first frame elements is arranged on the axial front faces of the filter section and is fixedly connected thereto. The filter section extends in the axial direction between the two first frame elements. The filter section has a shape deviating from a straight line, as seen in longitudinal section. This significantly increases the effective filter surface and reduces throughflow resistance and the risk of the ring filter becoming clogged.
Abstract:
A device (1) for changing the timing of an internal-combustion engine (2) is provided that has a camshaft adjuster (5), which is supported on a non-rotating bearing journal (6). A driving wheel (8) of the camshaft adjuster (5) is driven by a crank-shaft (3) via a first traction mechanism drive (7). The rotation of the driving wheel (8) is transferred via an actuator (10) to a driven part (9), which is arranged so that it can rotate relative to the driving wheel (8). Second and third traction mechanism drives (11, 12) create a drive connection between the driven part (9) and two camshafts (4, 4a).
Abstract:
a cam adjuster for adjusting the angle-of-rotation positions of a cam shaft relative to a crankshaft. The cam shaft adjuster has at least two operating chambers to which pressure oil can be supplied to change the angle-of-rotation position. At least one of the operating chambers can be deactivated depending on an operating parameter by blocking the pressure oil supply.
Abstract:
A device for changing the control times of gas-exchange valves in an internal combustion engine is provided, which includes a drive wheel (2) in driven connection with the crankshaft and a vane rotor (3) fixed with the camshaft. The drive wheel (2) has a hollow space, which is formed by a hollow cylindrical peripheral wall (4) and two lateral walls (5, 6), in which at least one hydraulic work chamber (9) is formed by at least two radial limit walls (7, 8), which is divided by at least one vane (11) into an A pressure chamber (12) and a B pressure chamber (13). The vane rotor (3) can be coupled mechanically with the drive wheel (2) by a separate locking element (14), that can be moved into a locked position within a receptacle (19) in the lateral walls (5) of the drive wheel (2). The receptacle (19) is connected hydraulically to the A pressure chamber (12) via a pressure medium supply groove (18) provided in an inner surface of the lateral wall (5), so that upon pressurization of the A pressure chamber (12), the locking element (14) can move hydraulically into an unlocked position in the rotor hub (10) of the vane rotor (3). According to the invention, a local stop (20) is arranged within the pressure medium supply groove (18) in the inner surface of the lateral wall (5), through which a pressure medium supply to the receptacle (19) of the locking element (14) is possible only through a bypass (21) when the vane rotor (3) is in the base position.