Okokuqala, indandatho yomoya. Indandatho yegesi ithintana ngqo negesi evuthayo enokushisa okuphezulu nokucindezela okukhulu, futhi izinga lokushisa liphezulu kakhulu ngesikhathi sokusebenza. Igesi evuthayo eshisa kakhulu futhi enomfutho ophezulu ingena endaweni eyingi ye-piston isuka esikhaleni esiphakathi kodonga lwesilinda ne-piston, bese ihlangana nowoyela wenjini olethwe isenzo sokupompa indandatho ye-piston, okuzokwenza ukuthi uwoyela ucoke futhi. qinisa; ngaphezu kwalokho, lapho injini ima, umjovo wokugcina I-fuel injected ekamelweni lokushisa ayishisi, futhi ngaphansi kwesenzo sokushisa okuphezulu okusele kwe-piston, izophinde i-coke futhi iqine, futhi ekugcineni i-carbon deposits izokwakhiwa futhi ifakwe ku-piston ring groove. Lona umgomo wokwakhiwa kwe-gas ring carbon deposition. Kuseringini yomoya kuphela, uwoyela wenjini olethwe isenzo sokupompa indandatho yepiston mancane kakhulu, futhi iningi lawo idiphozithi yekhabhoni efakwe ukushiswa okungaphelele kukaphethiloli. Okusho ukuthi, amadiphozithi amaningi ekhabhoni afakwe eringini yegesi abangelwa uphethiloli, futhi ikhwalithi kanye nesimo sokushiswa kukaphethiloli kuthinta ngqo ubuningi kanye nemvelo ye-carbon deposits.

Iringi ye-piston ilokhu yehla yenyuka endaweni eyi-piston ring groove, futhi isilinda aliyona into eyisiyingi ngokuphelele. I-piston ibuyisela phezulu naphansi kusilinda, futhi indandatho yepiston ihlale icindezelekile futhi yeluliwe. Amadiphozithi ekhabhoni, elokhu ecindezelwa, awakwazi ukugcinwa, amadiphozithi ekhabhoni kuphela egebe elingemuva angasala. Ngamanye amazwi, amadiphozithi e-carbon asele kuphela ohlangothini olulodwa lwendandatho yomoya, futhi akunakwenzeka ukukhiya indandatho yomoya ukuze ife, futhi akunakwenzeka ukuba kubangele injini ukuba ishise uwoyela. Ngesikhathi esifanayo, i-carbon deposits ifakwe emgodini ongemuva, okunciphisa ngokulinganayo igebe elingemuva, kodwa lingaqinisa uphawu futhi linciphise umphumela wokupompa.