Abstract: In a method of injecting fuel into the combustion chambers of an internal combustion engine having a plurality of cylinders, wherein a main injection process and a variable number of secondary injection processes assigned to the main injection process are carried out during one working cycle of a piston, a change of the number of secondary injection processes is initiated initially only for some of the cylinders, while the original number of secondary injection processes is maintained for the other cylinders. Subsequently, the proportion of the cylinders to which the change of the number of secondary injection processes is applied is increased.

Abstract: A toroidal regulating device for regulating the torque of a motor vehicle toroidal variator has at least one regulator and a first regulating variable which can be fed back to the regulator. The formation of includes at least one first characteristic quantity for a transmitted torque in the toroidal variator. At least one second regulating variable is capable of being fed back. The formation of the second variable includes at least one second characteristic quantity for a pivoting speed of an intermediate roller of the toroidal variator.

Abstract: In an arrangement for supplying an internal combustion engine with fuel and a method for servicing and repairing the arrangement wherein a number of components, that is, a fuel reservoir, a fuel pumping unit, a fuel filter, a fuel level sensor and line elements are arranged in a fuel container and the container has an access opening formed in a wall thereof and sealingly closed by a cover, at least the fuel reservoir and at least one of the line elements are firmly installed in the fuel container and for servicing or replacement only the other components are removed through the access opening after being disconnected from their support mounts and associated connecting lines.

Abstract: A drive unit for driving at least two axles of an all-wheel drive vehicle, having a housing (3), an input gear (5) meshing with an output gear (4) of a gear-shift transmission (2), a center differential (6) coaxially disposed relative to the input gear (5) and one of the axles. To yield maximum rigidity at minimum structural dimensions the input gear (5) is rigidly mounted to a cage (20) of the center differential (6), the cage (20) being journalled at one end in a first tapered roller bearing (35) seated in the housing (3). A further output member (28) of the center differential (6) extends from the opposite end of the cage (20) and is rigidly connected to an output gear (10; 40) journalled in a second tapered roller bearing (36) seated in the housing (3) and provided with a third tapered roller bearing (37) wherein the other end of the cage (20) is journalled.

Abstract: A seating system for a weapon operator of a military vehicle such as a tank has adjustable chest and back supports which can be locked to secure the weapon operator in position with respect to weapon controls in spite of highly dynamic changes in the position of the vehicle.

Abstract: A method for automatically detecting connectable surfaces in a technical system. The system includes bodies that can be connected to one another in pairs by applying a joining technology. A computerized design model of the system that, for each body of the system, includes at least one surface belonging to the body, and a joining technology, for example a specific bonding method, are provided. The joining technology produces a layer between in each case two bodies of the system. The surfaces or sub-areas of surfaces of the system that can be connected by the prescribed joining technology are automatically detected. For this purpose, those interspaces between in each case two surfaces of the design model that can be filled with a layer produced by the joining technology are automatically detected. Pairs of connectable finite elements are determined thereby.

Abstract: In a device for controlling the fuel quantity supplied to an internal combustion engine via a fuel supply line and an injection nozzle which includes a nozzle needle and an actuator for controlling the position of the nozzle needle, wherein a sensor for the detection of injection parameters is provided which supplies injection parameter data to a control unit for determining, on the basis of the sensor data, control parameters for the actuator of the injection nozzle, the sensor is a mass flow sensor arranged in the fuel supply line.

Abstract: The invention relates to a method for the production of a brake disk (2) and a brake disk (2) which are characterized by the following features: several pairs of inserted bushings (8, 10) other are placed into a core box. The core (14) is closed about the bushings (8, 10) in such a way that they form an integral component of the core (14). The core (14) is inserted into a casting tool and the brake disk is cast. After the core (14) is removed, the brake disk chamber (4) and the friction ring (6) are decoupled from each other and can expand in relation to each other without shielding the brake disk (2).

Abstract: This invention relates to a method for determination of a change in volumetric efficiency for an internal combustion engine, whereby a reference volumetric efficiency is determined in advance, a first prevailing volumetric efficiency which corresponds to a sensor error is determined at a first measurement point (M1, L1) in a first rotational speed range in which a change in the flow losses in an intake tract has only a minor effect on the volumetric efficiency, a second prevailing volumetric efficiency at a second measurement point (M2, L2) in a second rotational speed range is determined, this rotational speed range being above the first rotational speed range in terms of rotational speed, the second prevailing volumetric efficiency is corrected by means of the first prevailing volumetric efficiency and the change in volumetric efficiency is determined from the reference volumetric efficiency and the corrected second prevailing volumetric efficiency.

Abstract: A telematics service in a motor vehicle is provided by a mobile radio link between a telematics controller in the motor vehicle and an external telematics center. The telematics center is provided with data which identifies the motor vehicle from a first database and with data which identifies the mobile radio link from a second database. The the telematics center uses the data that has been provided to produce the authorization automatically.

Abstract: In a multistage oil pumping system for an oil supply system of a motor vehicle comprising at least two oil pumps arrange axially in side-by-side relationship, each of the oil pumps is connected to a separate drive so that the oil pumps can be operated independently of one another.

Abstract: In a method of operating an internal combustion engine with direct fuel injection such that, in the engine startup period, a three-way catalytic converter disposed in the engine exhaust system is rapidly heated to a working temperature, in that a fuel quantity which is injected is injected in two separate injection steps with the first fuel volume being injected during the intake stroke and the second fuel volume being injected during the expansion stroke so as to form immediately before the ignition instant a rich stratified charge cloud in the region of the spark plug thereby ensuring reliable ignition of the stratified cloud while, overall, achieving a lean fuel/air mix in the combustion chamber.

Abstract: In a method for influencing the roll behavior of a motor vehicle having at least one axle with wheels at opposite sides of the motor vehicle, vehicle body movements caused by transverse forces acting at the center of gravity are reduced in that for each vehicle axle wheel, a stabilizer with a hydraulic actuator generating a controllable force is provided and the stabilizer force is transmitted to the respective wheels and vehicle body for counteracting the vehicle body roll movements so as to improve the roll behavior of the vehicle with respect to accuracy and reaction speed.

Abstract: In an internal combustion engine comprising a cylinder-head with at least one combustion chamber in the cylinder head and the cylinder head has at least one intake passage and one exhaust passage, and an external exhaust gas recirculation line which branches off from the exhaust passage and opens at least into one of the intake passages, a pivotable flap is arranged between the exhaust gas recirculation passage and the associated intake passage in the region where the exhaust gas recirculation line is connected to the intake passage, the flap opening or closing a connection between the intake passage and the exhaust gas recirculation passage as a function of the pivoting position adjustment of the flap.

Abstract: A method for producing a vehicle part with an integrated antenna element includes providing a plastic substrate by a molding process, providing a coating layer by a film coating process, and providing at least one antenna element disposed between the coating layer and the plastic substrate.

Abstract: In an expansion container for a fuel system of a motor vehicle wherein the expansion container includes a container wall and a gas vent connector mounted on the container wall so as to be in communication with the interior of the expansion container by way of a valve, the expansion container and the gas vent connector consist of metal and are joined by at least a first seal structure and the gas vent connector is connected to the valve by at least a second seal structure.

Abstract: The invention relates to a lightweight valve that consists of a valve base, the latter comprising a valve stem and a hollow valve cone, and a valve head cover, whereby the valve base is linked with the valve head cover by means of a material-displacing welding method. A weight-reducing cavity is defined between the valve cone and the valve head cover in the assembled state of the valve, said cavity being provided with a stability-enhancing support structure. Suitable welding methods are projection welding, capacitor discharge welding and friction welding.

Abstract: In an internal combustion engine for a motor vehicle having a support for supporting the internal combustion engine and a system for routing fresh gas and exhaust gas to and from the engine, a mixing valve of an exhaust gas recirculation system is integrated in the support of the engine.

Abstract: The invention proposes a device (1) for guiding a loading floor (3), the height of which can be adjusted manually and which can be pivoted about a first spindle (9), of a motor vehicle. The device (1) is distinguished by lever parts (7), which are arranged opposite one another, can be pivoted about a second spindle (11) and on which the loading floor (3) is pivotably mounted, wherein the loading floor (3) can be adjusted between a lower loading floor position and an upper loading floor position by a pivoting movement of the lever parts (7).

Abstract: Air supply device is provided for a vehicle seat of an open-top motor vehicle having at least one air outflow opening which is provided in the upper region of the vehicle seat and via which an airstream can be applied to the head area, shoulder area and nape area of the sitting vehicle occupant in order to reduce undesired draught phenomenon. The airstream can be regulated by means of a control device. In order to provide improved comfort for the sitting vehicle occupant when driving with the top open, the airstream is adjusted, when the air supply device is switched on, by means of the control device as a function of an automatically sensed external parameter value or of a predefined value selectable by the sitting vehicle occupant, to an assigned basic value, starting from which the further adjustment of the airstream is carried out as a function of an automatically sensed further parameter value.