| 摘要 |
An air-compressing, direct-injection internal combustion engine formed with a combustion chamber in the shape of a solid of revolution in the piston crown into which fuel is injected via only one jet through an injection nozzle arranged obliquely in the cylinder head, in the direction of the rotating air for combustion. The working of the internal combustion engine is proposed to be improved in such a way that fuel deflection liable to occur in all operating ranges, mainly at the start and at the end of injection due to the rotating air flow and, respectively, when the gas is flowing out of the combustion chamber after the top dead center position, is prevented from affecting the working of the engine and from producing erosion on the piston crown and/or cylinder head. According to the new disclosure, this is essentially achieved by having the fuel jet discharge point of the injection nozzle at top dead center of the piston lying below the piston crown level and projecting into the combustion chamber, and by having the injection nozzle surrounded, with a clearance, by a longitudinally slotted sleeve which is open at the end and projects beyond the discharge orifice (fuel emission point). |
