Abstract: The invention relates to a method for connecting a contact plate (2) a lamp cap to the supply conductor wire (4) which is passed through an aperture (2a) in the contact plate (2). With the aid of a wire (5) which serves as filler, the supply conductor wire (4) and the contact plate (2) are soldered together, by generating an arc between the additional wire (5) and the supply conductor wire (4) or the contact plate (2). The solidified molten material of the additional wire (5) closes off the aperture (2a) and produces a reliable soldered join between the supply conductor wire (4) and the contact plate (2). The polarity of the electric voltage used to generate the arc is advantageously such that the additional wire (5) acts as an anode and the contact plate (2) or the supply conductor wire (4) acts as a cathode. The soldering process according to the invention advantageously takes place under an inert-gas atmosphere.

Abstract: The invention relates to a high-pressure discharge lamp for motor vehicle headlights which is provided with an annular flange (127) for mounting the high-pressure discharge lamp in the lamp holder of the motor vehicle headlight. According to the invention, the annular flange (127) is fixed on the base (125) by means of a snap or latching connection and is adapted to the lamp holder of motor vehicle headlights for halogen incandescent lamps. As a result, the high-pressure discharge lamp according to the invention can be inserted in motor vehicle headlights for halogen incandescent lamps.

Abstract: The invention relates to a method for connecting a contact plate (2) a lamp cap to the supply conductor wire (4) which is passed through an aperture (2a) in the contact plate (2). With the aid of a wire (5) which serves as filler, the supply conductor wire (4) and the contact plate (2) are soldered together, by generating an arc between the additional wire (5) and the supply conductor wire (4) or the contact plate (2). The solidified molten material of the additional wire (5) closes off the aperture (2a) and produces a reliable soldered join between the supply conductor wire (4) and the contact plate (2). The polarity of the electric voltage used to generate the arc is advantageously such that the additional wire (5) acts as an anode and the contact plate (2) or the supply conductor wire (4) acts as a cathode. The soldering process according to the invention advantageously takes place under an inert-gas atmosphere.

Abstract: A method of operating an internal combustion engine of a motor vehicle supplying fuel by at least one supply pump with cyclically changing supply output into a pressure storage, injecting the fuel from the pressure storage under pressure by at least one injection valve at an injection time directly into a combustion chamber of the internal combustion engine, measuring a pressure acting on the fuel, and matching cycles of a supply output of at least one supply pump and an injection time of the fuel in time relative to one another.

Abstract: The invention relates to a high-pressure discharge lamp for motor vehicle headlights which is provided with an annular flange (127) for mounting the high-pressure discharge lamp in the lamp holder of the motor vehicle headlight. According to the invention, the annular flange (127) is fixed on the base (125) by means of a snap or latching connection and is adapted to the lamp holder of motor vehicle headlights for halogen incandescent lamps. As a result, the high-pressure discharge lamp according to the invention can be inserted in motor vehicle headlights for halogen incandescent lamps.

Abstract: Method and device for operating an internal combustion engine for a motor vehicle, in which fuel is delivered under pressure by a delivery pump to a pressure chamber. The pressure acting upon the fuel in the pressure chamber is measured, and the fuel is injected by an injection valve directly into a combustion chamber of the internal combustion engine from the pressure chamber as a function of the measured pressure acting upon the fuel. When varying the working point of the internal combustion engine with regard to the pressure acting upon the fuel, it must be possible to control injection as accurately as possible even within the transient range, thus providing a sufficiently comfortable driving performance even within the transient ranges. This is achieved, in particular, in that the actual pressure acting upon the fuel is computed within the transient range and the working point of the internal combustion engine is adjusted correspondingly to this pressure.

Abstract: There are a number of controlling elements of an internal combustion engine which have an influence on the charge of the cylinders. For each controlling element, a triggering instant is determined that is adapted to its individual reaction time, so that all the controlling elements simultaneously deploy their action influencing the charge. In this manner, a desired charge is attained at a defined instant, thus permitting a harmonious adjustment of the charge to other operating parameters. This optimizes the driving properties, the performance and the fuel consumption of the internal combustion engine.

Abstract: A method and an arrangement for controlling a drive unit of a motor vehicle are suggested wherein the torque change of the drive unit is limited by a motor control system in dependence upon at least one status information of at least one other control system.

Abstract: A need-based method of heating a catalyst in the exhaust-gas system of an internal combustion engine, in which a converting power of the catalyst is determined and the catalyst is heated as a function of the converting power. Depending on the operating conditions of the internal combustion engine, different measures are undertaken for the heating of the catalyst. If the heating measures do not lead to the desired results within a predetermined time interval, a diagnostic function is started. As part of the diagnostic function, particularly effective heating measures are applied. If while using these measures a sufficient converting power of the catalyst is not obtained within a predetermined second time interval, it is assumed that the catalyst is damaged.

Abstract: The invention is directed to a method wherein measures are initiated for accelerating the warm-up of the catalyzer even for a warm engine such as after a warm start thereof. In this way and when there is an interruption of operation, the cooling off of the engine and the catalyzer, which takes place at different rates, and the effect thereof on the conversion rate is opposed. As a consequence thereof, the emission of unwanted exhaust-gas components after a warm start is reduced.