No ka carburetor a i ʻole throttle body gasoline injection engine, ʻo ka intake manifold e pili ana i ka laina intake mai hope o ka carburetor a i ʻole throttle body a i mua o ka lawe ʻana i ke poʻo cylinder. ʻO kāna hana ka hāʻawi ʻana i ka ea a me ka hui ʻana i kēlā me kēia cylinder intake port e ka carburetor a i ʻole throttle body.
No nā ʻenekini hoʻoheheʻe wahie a i ʻole nā ʻenekini diesel, hāʻawi wale ka intake manifold i ka ea maʻemaʻe i kēlā me kēia pahu pahu. Pono ka intake manifold e puʻunaue i ka ea, ka huila wahie a i ʻole ka ea maʻemaʻe e like me ka hiki i kēlā me kēia cylinder. No kēia kumu, pono e like ka lōʻihi o ke kahe kinoea i loko o ka intake manifold. I mea e hōʻemi ai i ke kahe ʻana o ke kinoea a hoʻomaikaʻi i ka hiki ke komo, pono e maʻalahi ka paia o loko o ka intake manifold.
Ma mua o ka kamaʻilio ʻana e pili ana i ka intake manifold, e noʻonoʻo kākou i ke komo ʻana o ka ea i loko o ka ʻenekini. I ka hoʻomaka ʻana i ka mīkini, ua haʻi mākou i ka hana o ka piston i loko o ka cylinder. Ke komo ka enekini i ka hahau intake, ne'e ka piston i lalo e hana i ka hakahaka i loko o ka cylinder ('o ia ho'i, e li'ili'i ke kaomi), i hiki ke ho'oulu 'ia ka 'oko'a pu'e ma waena o ka piston a me ka ea waho, i hiki ai i ka ea ke komo i loko o ka cylinder. No ka laʻana, ua hāʻawi ʻia ʻoe i kahi injection, a ua ʻike ʻoe i ke ʻano o ke kahu hānai ʻana i ka lāʻau i loko o ka syringe. Inā ʻo ka pahu nila ka ʻenekini, a laila i ka wā e huki ʻia ai ka piston i loko o ka pahu nila, e omo ʻia ka lāʻau i loko o ka pahu nila, a e huki ke ea i loko o ka pahu.
Ma muli o ka haʻahaʻa haʻahaʻa o ka hopena intake, ua lilo ka mea composite i mea kaulana i ka intake manifold. ʻO kona kaumaha māmā i loko, hiki ke hoʻemi pono i ke kū'ē a hoʻonui i ka pono o ka laweʻana.
