Ngemuva kokuthi umshini wokushayela uqalile, ushayela i-compressor crankshaft ukuze ijikeleze ngebhande elingunxantathu, eliguqulwa libe yipiston ngokusebenzisa umshini wentonga oyindilinga ukwenza ukunyakaza okuphindayo kusilinda. Lapho i-piston isuka ekhaveni iye kushaft, ivolumu yesilinda iyanda, ingcindezi esesilinda iphansi kunengcindezi yasemkhathini, futhi umoya wangaphandle ungena kwisilinda ngokusebenzisa isihlungi kanye ne-valve yokudonsa; Ngemuva kokufinyelela esikhungweni esingezansi esifile, i-piston isuka ohlangothini lwe-shaft iye ohlangothini lwekhava, i-valve yokudonsa ivaliwe, ivolumu yesilinda incipha kancane kancane, umoya okulesi silinda uyacindezelwa futhi ingcindezi iyanda. Lapho ingcindezi ifinyelela kunani elithile, i-valve yokukhipha iyacindezelwa ivuleke, bese umoya ocindezelweyo ungena ethangini lokugcina umoya ngepayipi. Ngale ndlela, icompressor isebenza nxazonke, ngokuqhubekayo idlulisa umoya ocindezelweyo ethangini lokugcina umoya, futhi ikhuphule kancane ingcindezi ethangini, Ukuze ithole umoya ocindezelweyo odingekayo.