Abstract: A method for operation of a drive train having a drive machine and an automatic, unsynchronized gearwheel variable-speed transmission, which can be connected to the drive machine by using an automatic clutch is described. A control device carries out a selection process as a function of vehicle parameters and/or operating variables of the motor vehicle to determine whether a gear change of the unsynchronized gearwheel variable-speed transmission will be carried out with the clutch engaged or disengaged. To ensure reliable operation of the motor vehicle, a gear change is carried out with the clutch disengaged in a time interval after initial starting up of the drive train and/or after starting of the drive machine and/or when a malfunction is identified in a component in the drive train.

Abstract: A method and a device for the automated application of a self-adhesive paint film to a three-dimensionally curved bodywork part, using a robotic application tool, the paint film being held ready in the form of a multi-layered film composite ready for picking up. After picking up has taken place, a protective strip on the adhesive side is removed from the film section, which is held taut, by means of a contact piece attached to the film composite on the end side and the adhesive side of the film section is thereby exposed. The paint film section is subsequently aligned above the body part to be covered, at a small distance from it, and is progressively pressed onto the bodywork part from the spaced-apart, taut position by means of a roller or doctor moving over the paint film.

Abstract: In a braking device for a camshaft adjuster of an internal combustion engine wherein the camshaft adjuster includes at least two adjustment inputs, a respective braking element is provided for each adjustment input to brake the respective adjustment input, the braking elements being operable by an excitation coil arrangement, which, depending on the direction of energization of an excitation coil arrangement, subjects either the one or the other braking element to magnetic flux for initiating braking of the respective adjustment input.

Abstract: The invention relates to hydrophobic and scratch-resistant paints, particularly for coating metal surfaces, comprising: A) organic binders having free —OH groups, B) network formers, which during the curing process of the liquid coatings form an inorganic silicate network made of mixtures of (B1) partially hydrolyzed and partially polycondensated organosilazane mixtures, and (B2) partially hydrolyzed and partially polycondensated organosilane mixtures, C) polysiloxanes having free —OH groups, aqueous solvent, and additives.

Abstract: The invention relates to a method and device (1) for producing a composite component, wherein a tubular, hollow section blank (5) is placed into the die cavity (3) of a combination tool comprising an inner high-pressure shaping tool (2) and an injection-molding tool, the combination tool is filled with a fluid in such a way that the blank (5) is wetted from the inside by the fluid, and the ends of the combination tool are sealed by two axial molding plugs (6 and 7). The filled blank (5) under pressure is then widened. The finished hollow section (22) is then plastic-coated in the same tool. In order to produce the composite component in a relatively simple manner and by a reliable process, it is suggested to empty the hollow section (22) after shaping in the sealed state at least until it is no longer dripping, wherein the pressurized fluid (19) is expelled under pressure from the hollow section (22) through at least one discharge channel formed in the axial molding plugs (6 and 7).

Abstract: In an adjustment device for adjusting the phase position of a camshaft relative to a crankshaft of an internal combustion engine which includes a hydraulic system for supplying hydraulic fluid under pressure to the adjustment device for the controlled admission to, and release thereof from, operating chambers of the adjustment device under the control of a control device including a control valve, the operating chambers are in communication with one another via control valves to permit flow of hydraulic fluid from one set of operating chambers to another by the varying torques effective on the camshaft or by controlling fluid supply to the operating chambers from the hydraulic fluid supply system.

Abstract: A safety valve for a compressed gas storage tank (12) includes a relief conduit (16, 18) provided for fluid connection to an interior chamber (14) of the compressed gas storage tank (12), and a closing member (22) sealing the relief conduit (16, 18); a retaining device (24) being provided which, in a normal condition, locks the closing member (22) in place and which, in safety-critical conditions, opens a cross-sectional flow area (30) in such a manner that the relief conduit (16, 18) is open to the atmosphere. In accordance with the present invention, the closing member (22) is connected to an adjustor (26) which adjusts the cross-sectional flow area (30) of the relief conduit (16, 18) as a function of an upstream interior pressure.

Abstract: A method of operating a hybrid transmission includes controlling the transmission according to a drive mode, which includes a continuously variable speed ratio, and according to automatic and manual fixed speed relationships modes, which include a plurality of fixed speed relationships including mechanics gear ratios and virtual gear relationships. The method also includes receiving a driver request for transmission operation in one of an Economy or a Sport mode, and operating the transmission in the requested Economy or Sport modes.

Abstract: A plurality of flow field plate assemblies forms a fuel cell stack. Each flow field plate assembly has a first flow field plate positionable on an anode side of a membrane electrode assembly (MEA) of a first fuel cell, a second flow field plate positionable on a cathode side of an MEA of a second fuel cell, adjacent the first fuel cell. At least one back-feed channel is interposed between the first and second flow field plates. At least a portion of the back-feed channel or a reactant manifold opening formed by the first and second flow field plates has a geometry that forms regions of high and low capillary forces, promoting liquid migration toward regions substantially isolated from a flow of reactants, to prevent water collection and ice formation. The migrated liquid being is purged during a purge of the fuel cell stack after operation.

Abstract: A motor vehicle transmission device is described. The transmission has an actuating unit, used for canceling a tooth-on-tooth position of coupling elements, wherein the actuating unit actuates a transmission brake when the tooth-on-tooth position is detected. The transmission also has a second actuating unit for actuating a disconnect clutch, the second actuating unit actuating the disconnect clutch when the tooth-on-tooth position is detected. The actuating unit for actuating the transmission brake and the second actuating unit for actuating the disconnect clutch are actuated in coordination with one another, in order to cancel the tooth-on-tooth position.

Abstract: The invention relates to a method for producing a bearing surface (5) of a radial shaft bearing from electrically conductive material. In said method, the contour of the bearing surface (5) is machined down in a first machining step, and the bearing surface (5) is electrochemically machined in a subsequent step. Also disclosed are an electrode for electrochemical machining as well as a connecting rod (1) to be used in machines.

Abstract: An interior lamp is provided for illuminating an interior of a vehicle having a glass surface, particularly a glass roof. At least one such interior lamp is integrated in the laminated glass of the glass surface.

Abstract: A device and a method for influencing the spring force characteristic of an active chassis of a motor vehicle are provided. A wheel spring device is arranged between a vehicle body and a wheel carrier of the motor vehicle. The spring force characteristic of the wheel spring device can be modified by controlling an actuating device. A sensor detects a prediction variable representing the vertical profile of a route ahead in the direction of travel of the motor vehicle. A control device controls the actuating device as a function of the detected prediction variable in such a way that the spring force characteristic of the wheel spring device is adapted in a predictive fashion to the course of the sensed vertical profile of the route ahead in the direction of travel of the motor vehicle.

Abstract: The invention relates to a method for machining a coated, subtantially cylindrical frictional contact surface (2) made of electrically conductive material. In said method, the frictional contact surface (2) is machined in an electrochemical manner. Also disclosed is an electrode (3) for electrochemical machining.