Ndife akatswiri pazigawo za injini zapamwamba kwambiri.
Chilankhulo
Mphete zitatu za mphete ya pisitoni zimagawidwa m'magulu awiri, mphete ya pisitoni pa dzenje la pisitoni ndi mphete yamafuta, ndipo mphete zina ziwirizo ndi mphete yamafuta. Mphete ya mpweya imatchedwanso kuti mphete ya compression. Ntchito yake imagwiritsidwa ntchito makamaka kusindikiza pisitoni, kuteteza silinda kuti isatuluke, ndipo imatha kutumiza kutentha kuchokera pamwamba pa pisitoni kupita ku cylinder liner, ndiyeno kutentha kumachotsedwa ndi madzi ozizira. Mtundu wina ndi mphete yamafuta, yomwe imatha kusunga gawo lina la mafuta kuti azipaka mafuta opangira silinda ndikuchotsa mafuta ochulukirapo pazanja.
Mphete zitatu za mphete ya pisitoni zimagawidwa m'magulu awiri, mphete ya pisitoni pa dzenje la pisitoni ndi mphete yamafuta, ndipo mphete zina ziwirizo ndi mphete yamafuta. Mphete ya mpweya imatchedwanso kuti mphete ya compression. Ntchito yake imagwiritsidwa ntchito makamaka kusindikiza pisitoni, kuteteza silinda kuti isatuluke, ndipo imatha kutumiza kutentha kuchokera pamwamba pa pisitoni kupita ku cylinder liner, ndiyeno kutentha kumachotsedwa ndi madzi ozizira. Mtundu wina ndi mphete yamafuta, yomwe imatha kusunga gawo lina la mafuta kuti azipaka mafuta opangira silinda ndikuchotsa mafuta ochulukirapo pazanja.
Chifukwa chiyani mphete ya pisitoni imakhala yoyera komanso yakuda?
Mtundu wa mphete ya mpweya wa pistoni ndi wosiyana, makamaka wokhudzana ndi zinthu za mphete ya mpweya. Pamwamba pa mphete yoyera ya gasi nthawi zambiri amakutidwa ndi chitsulo cha chrome, pomwe mphete yakuda ya gasi imakhala yakuda pang'ono chifukwa ndi mphete yachitsulo.
Kawirikawiri, mphete yoyamba ya mpweya wa pistoni ndi mphete yoyera, ndipo mphete yoyera imakhala ngati mbiya. Ziribe kanthu momwe pisitoni iliri, imatha kukwanira bwino ndi bwalo lamkati la mbiya ya silinda. Mphete yachiwiri yamphepo ndi mphete yakuda yamlengalenga ndipo imakhala yamakona anayi. Chifukwa chomwe sichimayikidwa pamalo a mphete yoyamba ya mpweya makamaka chifukwa kugwedezeka kwa mphete yamakona anayi kudzapaka khoma lamkati la silinda, ndipo ntchito yosindikiza si yabwino.
Momwe mungasungire mphete ya pistoni?
1. Onjezani mafuta apamwamba kwambiri mgalimoto. Pamene injini ikuyenda bwino, mphete ya pistoni idzayenda mwamphamvu ndi pisitoni, ndipo mafuta apamwamba adzakhala ndi mafuta abwino kwambiri, omwe angachepetse kuvala kwake mpaka kufika pamlingo wina.
2. Nthawi zonse muzitsuka zinthu zakunja mu silinda. Kuwonongeka kwamafuta ochulukirapo, ma depositi a kaboni ndi zinthu zina zimakhudza momwe mphete ya pistoni imagwirira ntchito, kukulitsa kuvala kwa silinda, komanso kupangitsa kuti silinda ikokedwe mozama.
3.Piston kuyika mphete kuyenera kufanana. Ngati mphete ya pistoni sikugwirizana ndi silinda ya silinda, imatsogolera ku mapindikidwe mosavuta.
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