Abstract: A gas exchange valve arrangement, especially for an internal combustion engine, with a valve head, which is mounted on a valve body. The valve body can be moved in a straight line in either of two opposite directions by an actuating element, which can be moved in either of the two directions of movement such that, as a result of a movement of the actuating element in at least one direction, the valve body is caused to move in the same direction. The actuating element comprises a piston, which can be moved relative to a space by a fluid medium. The space comprises a feed opening for the fluid medium, and the gas exchange valve arrangement includes a throttle device, which at least temporarily throttles the movement of the actuating element in at least one direction of its movement.

Abstract: A gas exchange valve arrangement, especially for an internal combustion engine, with a valve head, which is mounted on a valve body. The valve body can be moved in a straight line in either of two opposite directions by an actuating element, which can be moved in either of the two directions of movement such that, as a result of a movement of the actuating element in at least one direction, the valve body is caused to move in the same direction. The actuating element comprises a piston, which can be moved relative to a space by a fluid medium. The space comprises a feed opening for the fluid medium, and the gas exchange valve arrangement includes a throttle device, which at least temporarily throttles the movement of the actuating element in at least one direction of its movement.

Abstract: A reciprocating piston engine which is selectively operable in either a gas operation mode with a gaseous fuel or a diesel operation mode with a liquid fuel includes a main combustion chamber which has an inlet for receiving gas and/or air, an injection device and an outlet. At least one precombustion chamber is connected to the main combustion chamber by at least one precombustion chamber output that opens into said main combustion chamber. Each precombustion chamber has an applied-ignition device for igniting the contents of the precombustion chamber during gas operation. An optimization of exhaust gas values, particularly of the NO.sub.x concentrations, is attained by the applied-ignition device and a separate gas line for supplying the precombustion chamber with gas, thereby allowing a leaner fuel mixture to be used in the main combustion chamber.

Abstract: A gas engine with electronically controlled and/or regulated injection of relatively small quantities of injection oil in such a way as to improve the metering accuracy of the injection oil quantity, the flexibility with which the required ignition oil quantity is provided and the ability to freely preset the timing of ignition oil injection. The engine comprises a separate electronically controllable injection system for each cylinder including at least one ignition oil injection device 13 connected via an injection line 14 to a separate ignition oil hydraulic pump 16 which is in fluid communication with a pressure accumulator 15. An electronically controllable switching device 19 associated with the injection device 13 is electronically connected to an engine control device 20 that controls, regulates and monitors the ignition oil injection.