Engine ventilation is necessary, that in the case of a cranked shaft there was no harmful superfluous pressure. As piston rings cannot carry out densely enough hermetic sealing, combustible gases get in картер a cranked shaft. The mix of hot oil and fuel steams can create superfluous pressure which harmfully influences on krivoshipno-shatunnyj the mechanism. In order to avoid it gases should be sucked away through a connecting hose of the engine and be burnt.
The closed ventilation of the engine does not demand maintenance service. |