Pali chubu chokoka mpweya pafupi ndi fyuluta ya mpweya. Kodi chikuchitika ndi chiyani?
Iyi ndi chubu chomwe chili mu crankcase ventilation system chomwe chimawongolera mpweya wotuluka ku intake manifold kuti uyake. Injini ya galimotoyo ili ndi crankcase forced ventilation system, ndipo injini ikayamba kugwira ntchito, mpweya wina umalowa mu crankcase kudzera mu piston ring. Ngati mpweya wochuluka ulowa mu crankcase, kuthamanga kwa crankcase kumawonjezeka, zomwe zimakhudza piston pansi, komanso zimakhudza magwiridwe antchito otseka injini. Chifukwa chake, ndikofunikira kutulutsa mpweya uwu mu crankcase. Ngati mpweya uwu utulutsidwa mwachindunji mumlengalenga, udzaipitsa chilengedwe, ndichifukwa chake mainjiniya adapanga crankcase forced ventilation system. crankcase forced ventilation system imawongolera mpweya kuchokera ku crankcase kupita ku intake manifold kuti ulowenso mu chipinda choyaka. Palinso gawo lofunikira la crankcase ventilation system, lomwe limatchedwa oil and gas separator. Gawo la mpweya wolowa mu crankcase ndi exhaust gas, ndipo gawo ndi mafuta. Olekanitsa mafuta ndi gas ndi cholinga cholekanitsa mpweya wotuluka ndi mafuta, zomwe zingapewe vuto la mafuta oyaka injini. Ngati cholekanitsa mafuta ndi gasi chasweka, chidzapangitsa kuti nthunzi ya mafuta ilowe mu silinda kuti igwire nawo ntchito yoyaka, zomwe zidzapangitsa kuti injini ikayake mafuta, komanso zidzapangitsa kuti kaboni ichuluke m'chipinda choyaka. Ngati injini ikayaka mafuta kwa nthawi yayitali, ikhoza kuwononga chosinthira chamagetsi cha njira zitatu.
