Ukuphakama komhlaba okuphezulu komqhele we-piston kunyukile ngokuhamba kwesikhathi ukuze kuvikeleke isimo sesilinda. Ngenxa yokwenyuka kobukhulu bomhlaba ongaphezulu, idiphozithi endaweni engaphezulu isibucayi kakhulu kunezinjini zomhlaba ezimfishane.Indandatho ye-PC yethulwe kusukela ngo-2000.（PS:Ukuze kuthuthukiswe ipiston kuzoshicilelwa esihlokweni esisha.

Indandatho yokuhlanza i-piston ihlelwe phezulu kwe-cylinder liner.Indandatho yokuhlanza i-piston ifakwe ukuze ivikele ukwakheka kwediphozithi ngokweqile endaweni engaphezulu komqhele we-piston ngokukhuhla amadiphozithi lapho ipiston isondela esikhungweni se-top dead (TDC).
Izindandatho zokuhlanza i-piston zibuyekezwa ngokuqoqwa kokuhlangenwe nakho.