Hwaro hwekusiyanisa mhete dzepamusoro kana dzecomp kubva papiston mhete ndeyekuti mhete yekumusoro inopenya, chena, uye gobvu, uye comp ring yakasviba, nhema, uye nhete. Kureva kuti, mhete yepamusoro ichena yesirivha uye comp ring itema. Mhete yekumusoro inopenya kupfuura comp ring, uye mhete yekumusoro yakakora. Mhete dzecomp dzakati tete.

Mhete yepiston ichava nemucherechedzo, uye kazhinji divi rine mavara nenhamba rakatarisa kumusoro. Iyo piston mhete ndiyo yakakosha chikamu cheinjini yemafuta. Inovhara gasi rehuni necylinder, piston, uye cylinder wall. Gasoline uye injini dzedhiziri dzine mafuta akasiyana, saka zvindori zvepiston zvinoshandiswa zvakasiyana. Iwo mana mabasa episton mhete kuisa chisimbiso, kudzora mafuta (kugadzirisa oiri), kuitisa kupisa, uye kutungamira. Kuisa chisimbiso kunoreva kuvhara gasi kudzivirira gasi riri mukamuri rinopisa kuti risadonhe richienda ku crankcase kuti rivandudze kushanda zvakanaka kwemafuta. Kudzora mafuta kudzima mafuta ekuzora akawandisa pamadziro ecylinder uchivhara madziro ecylinder nefirimu remafuta akatetepa kuti uve nechokwadi chekuzora. Heat conduction mafambisirwo ekupisa kubva papiston kuenda kucylinder liner yekutonhodza.