Abstract: The invention relates to a hydraulic or pneumatic operating device for operating actuators in a motor vehicle transmission. At least two acutation cylinders are provided, each containing a cylinder housing. An actuation piston is guided therein along a cylinder axis in a longitudinally displaceable manner. Each actuation piston can be hydraulically or pneumatically loaded and is operatively connected to one of the actuators. The actuation cylinders are combined into a unit which can be flange-mounted on or in a transmission housing of the motor vehicle transmission. A sensor for detecting the position of a signal element arranged on each actuation piston is associated with each cylinder housing. An electrical interface, which is signal-connected to the sensors, is integrated in the unit, via which interface the sensors can be mutually contacted.

Abstract: An electric motor driven fluid pump for forced lubrication of a manual transmission of a motor vehicle, includes a housing having a fluid inlet and a fluid outlet, and an electronically commutated electric motor incorporated therein. The electric motor has a substantially cup-shaped magnetic rotor rotatable around a rotational axis, shaped for conveying fluid, an annular stator having a motor winding which at least partially encloses the rotor in a coaxial arrangement with respect to the rotational axis when viewed along the rotational axis, and a magnetic field sensor for detecting the position of the rotor. The housing includes a stator housing section which holds the stator, separates same from a liquid chamber in which the rotor is arranged, and extends into the rotor by a housing offset formed for receiving the magnetic field sensor.

Abstract: There is disclosed a hydraulic actuating device for actuating a shift rod in particular of a gearbox for motor vehicles, which comprises a cylinder chamber provided in or on a gear housing for accommodating a shift piston which is actively connected to the shift rod and which divides the cylinder chamber into two working chambers which can selectively be acted upon by a pressure medium from a reservoir for the latter, said working chambers being separated from one another by means of a sealing arrangement arranged on the shift piston. The sealing arrangement is designed in a valve-like manner so that, when at least one working chamber is acted upon by pressure medium, it connects said working chamber to an auxiliary chamber which is delimited by the sealing arrangement and which in turn can be connected to the reservoir for the pressure medium.

Abstract: A hydraulic control device operates a sliding selector shaft, in particular a gearbox for motor vehicles, with a bore made in a wall of a gearbox housing for accommodating a plastic piston. The piston is actively connected to the sliding selector shaft and delimits a pressure chamber and, under hydraulic pressure, radially guides and axially displaces the sliding selector shaft. The piston has a body and a guide section consisting of plastic. The piston is guided directly at the bore, designed as a non-reinforced and unlined cylinder bore, in the wall of the gearbox housing, consisting of a light metal alloy. This creates control device, which is of a much simpler, and more compact design compared with prior art.