Isiseko sokwahlula amakhonkco aphezulu okanye aphuma kwiringi yepiston kukuba umsesane ophezulu uqaqambile, umhlophe, kwaye ungqindilili, kwaye umsesane wekhomp umnyama, umnyama, kwaye ubhityile. Oko kukuthi, umsesane ophezulu umhlophe wesilivere kwaye umsesane we-com umnyama. Iringi ephezulu iqaqambile kune-com, kunye neringi ephezulu iyajiya. Izangqa zecom zincinci kakhulu.

Iringi yepiston iya kuba nophawu, kwaye ngokubanzi icala elinoonobumba kunye namanani lijonge phezulu. Iringi yepiston yinxalenye engundoqo ye-injini yamafutha. Itywina irhasi yamafutha ngesilinda, ipiston, kunye nodonga lwesilinda. Ipetroli kunye neenjini zedizili zineempawu ezahlukeneyo zamafutha, ngoko ke amakhonkco episton asetyenziswayo nawo ahlukile. Imisebenzi emine yeringi yepiston kukutywina, ulawulo lweoyile (ukulungisa ioyile), ukuqhuba ubushushu, kunye nesikhokelo. Ukutywinwa kubhekiselele ekutywineni irhasi ukuthintela irhasi ekwigumbi lokutsha ukuba ingavuzi kwikrankcase ukuphucula ukusebenza kakuhle kobushushu. Ulawulo lweoyile kukusula ioyile yokuthambisa egqithileyo kudonga lwesilinda ngelixa ugquma udonga lwesilinda ngefilimu encinci yeoli ukuqinisekisa ukuthambisa okuqhelekileyo. Ukuhanjiswa kobushushu kukuqhuba kobushushu ukusuka kwipiston ukuya kwi-cylinder liner ukuze kupholiswe.