Umsebenzi wendandatho ye-piston uhlanganisa ukubekwa uphawu, uwoyela olawulayo (ukulawula uwoyela), ukuqhutshwa kokushisa (ukudlulisa ukushisa), isiqondiso (ukusekelwa) izindima ezine. Ukubeka uphawu: kubhekiselwa kwigesi yokuvala, ungavumeli ukuvuza kwegesi yegumbi elivuthayo ku-crankcase, ukuvuza kwegesi kulawulwa okungenani, kuthuthukisa ukusebenza kahle okushisayo. Ukuvuza komoya ngeke nje kunciphise amandla enjini, kodwa futhi kwenza ukuwohloka kwamafutha, okuwumsebenzi oyinhloko wendandatho yegesi; Lungisa uwoyela (ukulawula uwoyela) : uwoyela wokugcoba owedlulele odongeni lwesilinda uyakhishwa, futhi udonga lwesilinda lumbozwe ifilimu yamafutha amancane ukuze kuqinisekiswe ukugcotshwa okujwayelekile kwesilinda nepiston nendandatho, okuwumsebenzi oyinhloko indandatho yamafutha. Ezinjini zanamuhla ezinesivinini esikhulu, ukunakwa okukhethekile kunikezwa indima yefilimu yokulawula indandatho ye-piston; Ukushisa kokushisa: ukushisa kwepiston kudluliselwa ku-cylinder liner ngokusebenzisa indandatho yepiston, okungukuthi, umphumela wokupholisa. Ngokusho kwedatha ethembekile, u-70 ~ 80% wokushisa otholwe ngenhla yepiston yepiston engapholisiwe uhlakazwa ngeringi ye-piston odongeni lwesilinda, futhi u-30 ~ 40% wepiston yokupholisa uhlakazwa ngeringi yepiston kuya kusilinda. udonga; Ukusekela: I-piston ring igcina i-piston kusilinda, ivimbela ukuthintana okuqondile phakathi kwepiston nodonga lwesilinda, iqinisekisa ukunyakaza okushelelayo kwepiston, inciphisa ukumelana nokungqubuzana, futhi ivimbela i-piston ekushayeni isilinda. Ngokuvamile, ipiston yenjini kaphethiloli isebenzisa izindandatho ezimbili zegesi nendandatho kawoyela eyodwa, kuyilapho injini kadizili ivamise ukusebenzisa izindandatho zikawoyela ezimbili nendandatho eyodwa yegesi.