Sisitimela esingesosisikhokelo kunye nentshukumo yecrankshaft, eyothuswa kancinci livili le-eccentric, apho i-motor crankshaft ishukuma kwaye ipleyiti yokutya ishukunyiswa kancinci ukwenza izinto zihambele phambili ngokukhawuleza, ukuze imathiriyeli ingakhubazeki kwaye yophukile. .