Ntchito mfundo injini chachikulu cha mafuta wopanda kompresa mpweya: pamene galimoto amayendetsa kompresa crankshaft kuti atembenuza, mwa kufala kwa ndodo kulumikiza, pisitoni ndi kondomu kudzikonda popanda kuwonjezera lubricant aliyense adzayenda mmbuyo ndi mtsogolo, ndi buku ntchito wopangidwa ndi khoma lamkati lamkati, mutu wamiyala ndi pamwamba pisitoni zidzasintha nthawi ndi nthawi. Pisitoni ya compressor ya piston ikayamba kugwira ntchito kuyambira pamutu wamphamvu, voliyumu yogwira ntchitoyo imakulirakulirakulirakulirabe, kenako mpweya umakankhira valavu yolowera pambali yolowera ndikulowa. Voliyumu yogwira ikafika pazipita, valavu yolowera idzatsekedwa; Pisitoni ya piston compressor imayenda mbali inayo, kenako valavu yotulutsa imatha. Njira yogwirira ntchito ndi iyi: crankshaft ya piston compressor imazungulira kamodzi, pisitoni imabwereranso kamodzi, ndipo njira yolowetsa, kupanikizika ndi kutulutsa zimakwaniritsidwa motsatizana mu silinda, ndiye kuti ntchito yomaliza yatha. Kapangidwe ka shaft imodzi ndi silinda iwiri imapangitsa kuti mpweya wa kompresa utuluke kawiri kuposa yamphamvu imodzi pamlingo wina wovoteledwa, ndipo wayang'aniridwa mwamphamvu pakulumikizana ndi phokoso. Muyeso womaliza wotsimikizira ndikuti chizindikiritso cha makinawa ndi chokwanira komanso choyenera. Magawo omwe amadziwika malinga ndi machitidwe apadziko lonse lapansi akuphatikiza magawo amiyeso ndi magawo aku America. Nthawi zambiri, opanga omwe ali ndi chizindikiritso chosavuta alibe zida zoyeserera, ndipo magawo ena sangakwaniritse ukadaulo waluso. Chifukwa chake, tikulimbikitsidwa kuti mufunse wopanga kuti apereke magawo mwatsatanetsatane kuti muthe kusankha bwino.