Ubude bomhlaba obuphezulu bepiston bunyukile ngokuhamba kwexesha ukukhusela imeko yesilinda. Ngenxa yokunyuka kwemilinganiselo yomhlaba ephezulu, iidiphozithi kumhlaba ongaphezulu zibaluleke kakhulu kuneenjini zomhlaba ezimfutshane.Iringi yePC iye yaziswa ukususela ngo-2000.

Umsesane wokucoca i-piston ulungelelaniswe phezulu kwi-cylinder liner.I-piston yokucoca i-piston ifakwe ukukhusela idiphozithi engaphezulu kwe-deposit-up kwi-piston Crown top land ngokukhupha iidiphozithi xa ipiston isondela kwiziko eliphezulu lokufa (TDC).
Amakhonkco okucoca ipiston ahlaziywa kunye nokuqokelela kwamava.