Abstract: The invention is directed to a method for limiting the temperature of the exhaust gas of an internal combustion engine operating at high load. In the method, a first measure for reducing the exhaust-gas temperature is carried out when the engine is operating under high load. Then, a check is made as to whether this measure is effective. If the first measure is inadequately effective, then a second measure is carried out to reduce the exhaust-gas temperature.

Abstract: The invention relates to a method for forming a fuel-air mixture and to a fuel supply device for an internal combustion engine, having an intake manifold, into which an air intake tube with an aspirated air metering device disposed in it discharges and to which the intake tubes leading to individual combustion chambers are connected. A plurality of fuel injection valves are provided, each of which is assigned to one combustion chamber, and having a central fuel vaporizer to which fuel can be supplied by means of a fuel metering device. To form a fuel-air mixture, the fuel to be supplied to the engine is vaporized and the fuel vapor is supplied to the aspirated air. In order to lower pollutant emissions after starting during the warmup phase of the engine, vaporization of the fuel is done at relatively low temperatures, so that the fuel vapor produced essentially comprises only highly volatile fuel components.

Abstract: The invention is directed to a system for supplying an internal combustion engine with fuel which includes the following functional components: a tank; a fuel pump; a metering device for metering fuel to the intake air; a feed line for conducting fuel from the fuel pump to the metering device; a reservoir which is so configured and mounted that fuel can be pumped therefrom to the metering device and which is not filled when tanking the tank and which can be again filled from the tank; and a control unit for driving the fuel pump and the metering device. The fuel pump is fixedly connected to the reservoir so that only fuel is pumped therefrom and a reservoir fill pump is provided which continuously maintains the reservoir filled as long as fuel is present in the tank.