Mbere ya byose, impeta yo mu kirere. Impeta ya gaze ihuza gazi yaka nubushyuhe bwinshi hamwe numuvuduko mwinshi, kandi ubushyuhe buri hejuru cyane mugihe gikora. Ubushyuhe bwo hejuru hamwe n’umuvuduko mwinshi wa gaze yaka yinjira muri pisitori ya piston kuva mu cyuho kiri hagati yurukuta rwa silinderi na piston, hanyuma igahura namavuta ya moteri yazanwe nigikorwa cyo kuvoma impeta ya piston, bizatera amavuta kokiya kandi gushimangira; hiyongereyeho, iyo moteri ihagaze, inshinge zanyuma Amavuta yatewe mucyumba cyaka ntabwo yaka, kandi mugikorwa cyubushyuhe bwo hejuru busigaye bwa piston, nayo izokera kandi ikomere, amaherezo hazashyirwaho ububiko bwa karubone kandi yashyizwe muri piston impeta. Iri ni ihame ryo gushiraho gaze impeta ya karubone. Gusa mu mpeta yo mu kirere, amavuta ya moteri yazanwe nigikorwa cyo kuvoma impeta ya piston ni nto cyane, kandi ibyinshi muri byo ni ububiko bwa karubone bwabitswe no gutwikwa kwa lisansi kutuzuye. Nukuvuga ko ibyinshi mububiko bwa karubone bwashyizwe kumpeta ya gaze biterwa na lisansi, kandi ubwiza no gutwikwa kwa lisansi bigira ingaruka kuburyo butaziguye ubwinshi n'imiterere yabibitse.

Impeta ya piston ihora izamuka hejuru no mumashanyarazi ya piston, kandi silinderi ntabwo izenguruka rwose. Piston isubirana hejuru no hepfo muri silinderi, kandi impeta ya piston ihora ihindagurika kandi irambuye. Amabuye ya karubone, guhora asunikwa, ntashobora kugumana, gusa imyuka ya karubone mu cyuho cyinyuma irashobora kuguma. Mu yandi magambo, ububiko bwa karubone busigara gusa kuruhande rumwe rwimpeta yikirere, kandi ntibishoboka gufunga impeta yikirere kugeza gupfa, kandi ntibishoboka gutera moteri gutwika amavuta. Muri icyo gihe, ububiko bwa karubone bushyirwa mu cyuho cyinyuma, ibyo bikaba bigabanya kugabanya icyuho cyinyuma, ariko birashobora gushimangira kashe no kugabanya ingaruka zo kuvoma.