Moteri y'imodoka ni igikoresho gitanga ingufu ku modoka, kandi ni wo mutima w'imodoka, ugena ingufu, ubukungu, ituze n'uburinzi bw'ibidukikije by'imodoka. Dukurikije amasoko atandukanye y'ingufu, moteri z'imodoka zishobora kugabanywamo moteri za mazutu, moteri za lisansi, moteri z'amashanyarazi n'ingufu z'ubwoko bwa hybrid.
Moteri zisanzwe za lisansi na moteri za mazutu ni moteri zikoresha lisansi zihindura ingufu za lisansi mu buryo bwa mashini zikoresha lisansi n’ingufu zisohoka. Moteri ya lisansi ifite ibyiza byo kwihuta cyane, ubuziranenge buke, urusaku ruto, gutangirira byoroshye no kugabanya ikiguzi cyo kuyikora; moteri ya mazutu ifite igipimo cyo gukanda cyane, ubushobozi bwo gukoresha ubushyuhe bwinshi, imikorere myiza mu buryo bwihuse no kohereza imyuka ihumanya kurusha moteri ya lisansi.
Moteri igizwe n'uburyo bubiri bw'ingenzi, ari bwo uburyo bwo guhuza icyuma n'uburyo bwo guhuza icyuma, ndetse n'uburyo butanu bw'ingenzi, nko gukonjesha, gushyira amavuta mu cyuma, gushyushya, gutanga lisansi no gutangiza. Ibice by'ingenzi ni silinda, umutwe wa silinda, piston, piston pin, inkoni ihuza, crankshaft, flywheel n'ibindi. Icyumba cyo gukoreramo cya moteri ya piston ihindura icyuma cyitwa silinda, kandi ubuso bw'imbere bwa silinda ni silinda. Piston ihindura icyuma muri silinda ifatanye n'inkombe imwe y'icyuma ihuza binyuze muri piston pin, naho indi mpera y'icyuma ihuza ihuzwa na crankshaft, ishyigikiwe n'icyuma kiri kuri silinda kandi ishobora guhindurirwa mu cyuma kugira ngo ikore uburyo bwo guhuza icyuma. Iyo piston igiye inyuma no inyuma muri silinda, inkoni ihuza isunika crankshaft kugira ngo izunguruke. Ahubwo, iyo crankshaft izunguruka, agasanduku k'icyuma gahuza kagenda mu ruziga muri crankcase kagatwara piston hejuru no hasi muri silinda binyuze muri crank connecting. Buri gihe cyo kuzunguruka kwa crankshaft, piston ikora rimwe buri gihe, kandi ingano ya silinda ihora ihinduka kuva ku ntoya kugera ku nini, hanyuma kuva ku nini kugera ku ntoya, n'ibindi. Igice cyo hejuru cya silinda gifunze n'umutwe wa silinda. Valve zo kwinjira n'izo gusohora zitangwa ku mutwe wa silinda. Binyuze mu gufungura no gufunga kwa valve zo kwinjira n'izo gusohora, bigerwaho no kwishyuza imbere muri silinda no gusohora hanze ya silinda. Ifungura no gufunga kwa valve zo kwinjira n'izo gusohora bitwarwa na camshaft. Camshaft itwarwa na crankshaft binyuze ku mukandara cyangwa ibikoresho bifite amenyo.
Turi Zhuomeng Shanghai Automobile Co., LTD., tugurisha ubwoko bubiri bw'ibice by'imodoka bya MG&MAUXS mu gihe cy'imyaka 20, niba imodoka yawe ikeneye ibice, ushobora kutwandikira.
