Ukuze uthole i-carburetor noma izinjini zokujova komzimba we-throttle, i-manifold etholwayo ibhekisa emgqeni wokudla kusuka ngemuva kwe-carburetor noma umzimba we-throttle uye ngaphambi kokudla kwekhanda le-cylinder. Umsebenzi wayo ukusabalalisa ingxube yomoya nephethiloli kwi-Portinder yokungena echwebeni ngalinye nge-carburetor noma umzimba we-throttle.
Ngezinjini zokujova kwamafutha e-airway noma ama-diesel, ukudliwa okuningana kusabalalisa nje umoya ohlanzekile ekuthatheni ukudla kwesilinda ngakunye. I-Mantifold yokuthambisa kufanele isabalalise umoya, ingxube kaphethiloli noma umoya ohlanzekile ngokulinganayo ngangokunokwenzeka kwisilinda ngasinye. Ngale njongo, ubude bendatshana yegesi ekuthandeni abaningi kufanele bulinganiswe ngangokunokwenzeka. Ukuze sinciphise ukumelana kwegesi futhi sithuthukise umthamo wokudla, udonga olungaphakathi lwe-intax many kufanele lube bushelelezi.
Ngaphambi kokuthi sikhulume nge-many malifold, ake sicabange ngokuthi umoya ungena kanjani enjini. Ngokwethulwa kwenjini, sishilo ngokusebenza kwe-piston kwisilinda. Lapho injini isemadlelweni okudla, ipiston ihamba phansi ukuze ikhiqize i-vacuum kwisilinda (okungukuthi, ingcindezi iba incane), ukuze umehluko wokucindezela phakathi kwepistoni nomoya ongaphandle ungenziwa, ukuze umoya ungene ku-cylinder, ukuze umoya ungene ku-cylinder. Isibonelo, nonke ninikezwe umjovo, futhi ubonile ukuthi umhlengikazi amunca umuthi oyisirinji. Uma umgqomo wenaliti uyinjini, lapho-ke i-piston ngaphakathi kwe-barrel elahlekile idonswa ngaphandle, i-potion izoncipha emgqonyeni wenaliti, futhi injini ukudonsa umoya kwisilinda.
Ngenxa yokushisa okuphansi kokuphela kokudla, impahla eyinhlanganisela isibe yinto ethandwayo yokudla. Isisindo saso sokukhanya sibushelelezi ngaphakathi, esinganciphisa ngempumelelo ukumelana futhi sikhuphule ukusebenza kahle kokudla.
