Kwi-carburetor okanye i-throttle body injection ye-injini yepetroli, i-manifold intake ibhekisa kumgca wokuthatha ukusuka emva kwe-carburetor okanye umzimba we-throttle ukuya ngaphambi kokuthatha intloko yesilinda. Umsebenzi wayo kukuhambisa umoya kunye nomxube wamafutha kwi-cylinder nganye yokuthatha i-port nge-carburetor okanye i-throttle body.
Kwii-injini ze-injini yamafutha omoya okanye ii-injini ze-diesel, i-manifold intake isasaza umoya ococekileyo kwi-cylinder nganye. Ubuninzi bokuthatha kufuneka busasaze umoya, umxube wamafutha okanye umoya ococekileyo ngokulungeleleneyo kangangoko kunokwenzeka kwisilinda ngasinye. Ngenxa yale njongo, ubude bomzila wegesi kwi-manifold intake kufuneka bulingane ngokusemandleni. Ukuze kuncitshiswe ukuxhathisa kokuhamba kwegesi kunye nokuphucula umthamo wokuthatha, udonga lwangaphakathi lwe-manifold yokuthatha kufuneka lube lula.
Ngaphambi kokuba sithethe ngobuninzi bokuthatha, makhe sicinge ngendlela umoya ongena ngayo enjinini. Kwintshayelelo ye-injini, sikhankanye ukusebenza kwepiston kwi-cylinder. Xa i-injini ikwi-intake stroke, i-piston ihlehla ukuze ivelise i-vacuum kwi-cylinder (oko kukuthi, uxinzelelo luba luncinci), ukwenzela ukuba umahluko woxinzelelo phakathi kwepiston kunye nomoya wangaphandle unokwenziwa, ukuze umoya ingangenisa isilinda. Umzekelo, nonke ninikwe inaliti, kwaye niyibonile indlela umongikazi alifunxa ngayo iyeza kwisirinji. Ukuba umgqomo yenaliti yi-injini, ngoko xa ipiston ngaphakathi kwingqayi yenaliti ikhutshiwe, i-potion iya kutsalwa kwi-naliti yenaliti, kwaye injini iya kutsala umoya kwi-cylinder.
Ngenxa yobushushu obuphantsi besiphelo sokuthatha, imathiriyeli edibeneyo iye yaba yinto ethandwayo yokuthatha izinto ezininzi. Ubunzima bayo obulula bulula ngaphakathi, obunokunciphisa ngokufanelekileyo ukuchasana kunye nokwandisa ukusebenza kakuhle kokuthatha.