Air compressing autoigniting injection-type internal combustion engine with prechamber

Claim 1

An air-compressing, autoigniting, injection type internal combustion engine with a prechamber means arranged essentially axially in the cylinder head means and having a discharge channel means constricted in relation to the maximum cross section of the prechamber means, which includes a working piston having a substantially annularly shaped combustion space recess means and a domelike portion substantially enclosed by said annularly shaped combustion space recess means and extending in the compression end position of the piston into the prechamber means while leaving free an annular gap that is considerably smaller than the discharge aperture of the discharge channel means, means for obtaining an inflowing combustion air rotating substantially about the cylinder axis and injection nozzle means arranged at the end of the prechamber means opposite the discharge channel means for injection an essentially conical jet into the prechamber means in the direction toward the discharge channel means, characterized in that the prechamber means includes a substantially Venturi-shaped, only slightly constricted discharge channel means, and in that the injection nozzle mean injects a hollow jet of substantially conical shell shape against the walls of the discharge channel means opposite the combustion air rotating by inflowing into the prechamber means so that the injected fuel and the inflowing combustion air cross each other and a considerable air-distributed fuel component results as a result of the correspondingly intensive tearing up of the fuel while the wall-distributed fuel component is distributed filmlike by the air rotatingly displaced into the prechamber means and by the charge again rotatingly flowing our of the prechamber means, is detacted in vapor form, is mixed with the combustion air and is thereafter combusted.