Isimiso sokusebenza senjini eyinhloko ye-air-free compressor yomoya: lapho imoto ishayela i-crankhaft ye-compressor ukuze ijikeleze, ngokudluliswa kwenduku yokuxhuma, i-piston ene-self lubrication ngaphandle kokungeza i-lubricant izohamba iye emuva naphambili, futhi ivolumu yokusebenza yenziwe udonga lwangaphakathi lwesilinda, isilinda ikhanda ne-piston phezulu ingashintsha njalo. Lapho i-piston ye-piston compressor iqala ukusebenza kusuka ekhanda lesilinda, ivolumu yokusebenza kusilinda izokhula kancane kancane, bese igesi izocindezela i-valve yokufaka eceleni kwepayipi lokungena bese ingena kwisilinda. Lapho ivolumu yokusebenza iba esiphezulu, i-valve yokungena izovalwa; I-piston ye-piston compressor ihamba iye kolunye uhlangothi, bese kuthi i-valve yokukhipha ivalwe. Inqubo yokusebenza ejwayelekile yile: i-crankshaft ye-piston compressor ijikeleza kanye, i-piston iphinda ibuye kanye, futhi inqubo yokudla, ukucindezela kanye nokukhipha kutholakala ngokulandelana ku-cylinder, okungukuthi, umjikelezo wokusebenza usuphothuliwe. Umklamo wesakhiwo somgodi owodwa nesilinda esimbili wenza ukugeleza kwegesi kwe-compressor kuphindwe kabili kukasilinda owodwa ngejubane elithile elilinganisiwe, futhi kulawulwe kahle ekulawulweni kokudlidliza nangomsindo. Izinga lokugcina lesethenjwa ukuthi ngabe ukuhlonza ipharamitha lobuchwepheshe lomshini kuphelele futhi kufanelekile. Amapharamitha akhonjwe ngokomkhuba wamazwe omhlaba afaka amayunithi emethrikhi namayunithi aseMelika. Ngokuvamile, abakhiqizi abanenkomba elula yepharamitha abanayo imishini yokuhlola efanelekile, futhi amanye amapharamitha awakwazi ukuhlangabezana namazinga ajwayelekile wezobuchwepheshe. Ngakho-ke, kunconywa ukuthi ubuze umenzi ukuthi ahlinzeke ngemingcele enemininingwane ukuze ukwazi ukukhetha kahle.