Abstract: The subject of the invention is a mixture-compressing spark-ignition internal-combustion engine with a main combustion chamber and an auxiliary combustion chamber in the cylinder head. The auxiliary combustion chamber has a spark plug and is connected to the main combustion chamber by an overflow bore. The overflow bore is aligned with the piston crown in such a way that an emerging ignition jet aims at a surface region of the piston crown. According to the invention, the overflow bore is arranged concentrically with respect to the longitudinal center axis of the cylinder and the surface region of the piston crown is designed as an impact area lying opposite the bore and running orthogonally with respect to the jet direction.

Abstract: A method and apparatus for operating an air-compressing internal combustion engine with auto-ignition in which the fuel quantity to be injected is supplied initially in at least one pre-injection jet and thereafter in at least one main injection jet; the fuel of the main injection is preheated to a temperature above the temperature range critical for an evaporation of the fuel at least during operation of the engine in its upper load range while the fuel of the pre-injection is kept below the critical temperature; the injection valve includes two pressure spaces which are series-connected, whereby the pressure space disposed in second place, as viewed in the direction of flow, is arranged in heat-absorbing relationship to the interior of the working space of the internal combustion engine.

Abstract: An injection valve arrangement for a high-pressure injection of liquid fuel into a working chamber of an internal combustion engine with the arrangement including at least one valve needle which is urged by a spring force in a closing direction so that a pair of sealing cones associated with the valve needles are brought into engagement with a pair of separate valve seats. The valve needle is liftable in a direction opposite a flow direction effective in the injection process by hydraulic pressure of the fuel to be injected. Pressure chambers having a diameter larger than the respective valve seats are provided and communicate by way of appropriate ducts which merge to form a common flow cross-section. At least two separate line connectors are provided for receiving separate fuels and/or fuel components with the line connectors directing the fuels and/or fuel components to the respective pressure chambers.

Abstract: A combustion engine with internal combustion, exhaust gas return and inlet and exhaust systems separate as regards their gas paths, in which the exhaust gas return system is essentially independent in its gas paths from the inlet system.

Abstract: An internal combustion engine operating with applied ignition and with minimum-quantity-injection into an ignition chamber terminating in a main combustion space which is variable in volume, and in which the main combustion space is additionally supplied with fuel; the minimum-quantity injection nozzle coordinated to the ignition chamber is thereby connected in a fuel circulatory system into which is fed a substantially constant fuel quantity exceeding the injection quantity for the minimum-quantity injection nozzle; a throttle cross section is provided in the return of the fuel circulation downstream of the minimum-quantity injection nozzle while the supply of the fuel to the main combustion space takes place by way of a suction-pipe injection system, whereby the suction-pipe injection quantity is branched off from the return of the fuel circulation and is controlled as a function of load by the adjustment of the throttle cross section in dependence on the load.

Abstract: An internal combustion engine with applied ignition which includes at least one main combustion space and one ignition chamber coordinated to a respective main combustion space and connected therewith by way of an overflow channel and provided with a spark plug and an injection valve, and a fuel supply system for the ignition chamber independent of the fuel supply for the main combustion spaces which operates in such a manner that a fuel quantity is injected into the associated ignition chamber during a low pressure phase of the corresponding main combustion space; an electromagnetically actuatable valve which is electrically controllable in accordance with the ignition sequence of the internal combustion engine is thereby coordinated to each injection line whereby the electric control of the actuating magnets of the electromagnetically actuated valves takes place by way of a switch actuated by a cam rotating at a speed proportional to the engine rotational speed; the switch, in turn, is adapted to be changed

Abstract: An injection valve for the injection of fuel during a low pressure phase into a space subjected to pressure fluctuations, which includes an injection nozzle equipped with a nozzle seat that is provided with at least one nozzle aperture; the nozzle aperture is adapted to be covered off by a nozzle needle which is adapted to be lifted and is limited in its lifting movement by an abutment at least in its opening direction; the nozzle seat is thereby movable in the lifting direction of the nozzle needle.