Abstract: In a method for operating an internal combustion engine with exhaust gas purification system, a rich-burn mode of the internal combustion engine with a rich exhaust gas composition or a lean-burn mode of the internal combustion engine with a lean exhaust gas composition is set alternately, and the quantity of fuel which is introduced during a combustion cycle of the internal combustion engine is introduced by at least one preinjection, at least one main injection and at least one afterinjection.

Abstract: In a method for operating an internal combustion engine with exhaust gas purification system, a rich-burn mode of the internal combustion engine with a rich exhaust gas composition or a lean-burn mode of the internal combustion engine with a lean exhaust gas composition is set alternately, and the quantity of fuel which is introduced during a combustion cycle of the internal combustion engine is introduced by means of at least one preinjection, at least one main injection and at least one afterinjection.

Abstract: The invention is based on a sliding valve (10) having a sliding sleeve (12) which is axially displaceable in a control cylinder (13) and which controls, with at least one control face (23) on its outer periphery, at least one control opening (17, 18) in the control cylinder (13) out. It is proposed that the control face (23) is radially elastically flexible in the direction of the control cylinder (13).

Abstract: In a method for operating a diesel engine having a cylinder, a piston which is guided in a longitudinally displaceable manner oscillating between an upper dead center position and a lower dead center position in the cylinder, and an injector having an injector valve for the injection of a fuel quantity into the cylinder, in a compression cycle delimited by the movement of the piston from the lower dead center position to the upper dead center position, combustion air is compressed. In a working cycle delimited by the movement of the piston from the upper dead center position to the lower dead center position, the injection of the fuel quantity occurs. In all operating states the injection begins after the upper dead center position, the injector valve being abruptly opened.

Abstract: In a method for operating a diesel engine having a cylinder, a piston which is guided in a longitudinally displaceable manner oscillating between an upper dead center position and a lower dead center position in the cylinder, and an injector having an injector valve for the injection of a fuel quantity into the cylinder, in a compression cycle delimited by the movement of the piston from the lower dead center position to the upper dead center position, combustion air is compressed. In a working cycle delimited by the movement of the piston from the upper dead center position to the lower dead center position, the injection of the fuel quantity occurs. In all operating states the injection begins after the upper dead center position, the injector valve being abruptly opened.

Abstract: A system and a process for operating a diesel engine using an automatic engine control which, as a function of characteristic diagrams, automatically controls the operation of the diesel engine and permits an automatic rich/lean controlling of the diesel engine. The automatic engine control includes a computer which, as a function of predetermined change-over criteria, causes a change-over to the rich or the lean operation of the diesel engine. A sensor system communicates with the computer and monitors the parameters necessary for change-over criteria. A memory communicates with the computer, the memory storing separate characteristic diagrams for the operation of the diesel engine for the lean operation and for the rich operation.