Externally ignited directly injected reciprocating piston internal combustion engine has injector tip located so that penetration point of injector axis with regard to valve head is spaced to provide optimum injector position

摘要

The engine has two inlet valves (5) with fully variable lifts located in the combustion chamber bowl (1). The injector (4) away from the circumferential region (1') of the bowl in the direction of the inlet valves is located with its injector tip (6) centrally between them in such a way that the penetration point of the injector axis (7) at least through the plane of an inlet valve head (5') level with the sealing seat has a spacing (a) determined by a mathematical expression to provide an optimum injector position.