Pa injini zojambulira mafuta za carburetor kapena throttle body, intake manifold imatanthauza mzere wolowera kuchokera kumbuyo kwa carburetor kapena throttle body kupita ku intake ya silinda. Ntchito yake ndikugawa mpweya ndi mafuta ku doko lililonse lolowera la silinda pogwiritsa ntchito carburetor kapena throttle body.
Pa injini zolowetsa mafuta mumlengalenga kapena injini za dizilo, intake manifold imangogawa mpweya woyera ku silinda iliyonse yolowera. Intake manifold iyenera kugawa mpweya, mafuta osakaniza kapena mpweya woyera mofanana momwe zingathere ku silinda iliyonse. Pachifukwa ichi, kutalika kwa njira ya mpweya mu intake manifold kuyenera kukhala kofanana momwe kungathekere. Pofuna kuchepetsa kukana kwa mpweya kuyenda ndikuwongolera mphamvu ya intake, khoma lamkati la intake manifold liyenera kukhala losalala.
Tisanalankhule za intake manifold, tiyeni tiganizire momwe mpweya umalowera mu injini. Poyambira injini, tatchula momwe pisitoni imagwirira ntchito mu silinda. Injini ikalowa mu intake stroke, pisitoni imatsika kuti ipange vacuum mu silinda (ndiko kuti, kuthamanga kumakhala kochepa), kotero kuti kusiyana kwa kuthamanga pakati pa pisitoni ndi mpweya wakunja kupangidwe, kotero kuti mpweya ulowe mu silinda. Mwachitsanzo, nonse mwapatsidwa jakisoni, ndipo mwawona momwe namwino adayamwa mankhwalawo mu syringe. Ngati singano ndi injini, ndiye kuti pisitoni yomwe ili mkati mwa singano ikatulutsidwa, mankhwalawo adzayamwa mu singano, ndipo injiniyo idzakoka mpweya mu silinda.
Chifukwa cha kutentha kochepa kwa gawo lolowera, zinthu zopangidwa ndi zinthu zosiyanasiyana zakhala chinthu chodziwika bwino cholowera. Kulemera kwake kopepuka ndi kosalala mkati, komwe kungathandize kuchepetsa kukana ndikuwonjezera mphamvu ya gawo lolowera.
