Wɔakyekyɛ onwini nhyehyɛe mu titiriw abien: mframa a ɛma onwini ne nsu a ɛyɛ nwini. Mframa a ɛma onwini nhyehyɛe no ma engine no fã a ɛkorɔn-engine no yɛ nwini denam ɔhyew no a ɛpaapae tẽẽ kɔ wim no so; Bere a nsu a ɛma onwini no di kan de ɔhyew no kɔ coolant no mu, na afei coolant no ma ɔhyew no kɔ wim. Wɔde nsu a ɛma onwini no di dwuma kɛse wɔ kar engine mu esiane mfaso horow a ɛwɔ so te sɛ onwini a ɛyɛ pɛ, nkɛntɛnso pa ne dede a ɛyɛ engine a ɛba fam nti. Wɔ nsuo a ɛma onwini no mu no, ɛsɛ sɛ wɔma onwini no hyew kɔ so wɔ 80 ~ 90 digrii ntam na ama engine no ayɛ adwuma sɛnea ɛsɛ.
Mframa a ɛma onwini no gyina mframa so titiriw sɛ nea ɛma onwini no, na ɔhyew a ɛwɔ ɔhyew a ɛkɔ fam no mu no nam mframa a ɛsen no so kɔ wim. Nhyehyɛe no yɛ nneɛma te sɛ fan, mframa akwankyerɛ, ɔhyew sink, cylinder mframa akwankyerɛ ne splitters titiriw, a ɛka bom yɛ ɔhyew a wɔsɛe no nhyehyɛe a etu mpɔn.
Cylinder block ne cylinder ti a ɛwɔ mframa mu-engine a ɛyɛ nwini no nyinaa wɔ ɔhyew a ɛkɔ fam, na wɔtaa tow saa afã abien yi gu ahorow na wɔboaboa ano. Wɔde aluminum alloy na ɛyɛ cylinder no ti na wɔde ɔhyew a ɛware sinks ahyɛ mu esiane sɛ ɛyɛ hyew sen biara nti. Sɛnea ɛbɛyɛ a ɛbɛma onwini no ayɛ kɛse na ama ayɛ sɛ onwini no, mframa a ɛma onwini no nso wɔ mframa akwankyerɛ ne splitter. Fan no gyinabea gu ahorow sɛnea engine no nhyehyɛe te. Ebia ɛwɔ engine no anim mfinimfini anaasɛ wɔde si benkum ne nifa so cylinders no anim.
Mfaso a ɛwɔ mframa a ɛma onwini so ne ne nhyehyɛe a ɛnyɛ den, adwumayɛ a wotumi de ho to so, emu duru a emu yɛ hare, ɔhyew a ɛba ntɛmntɛm na ɛho ka sua. Eyi ma ɛfata titiriw sɛ wɔde di dwuma wɔ mmeae a ɛhɔ yɛ hyew kɛse te sɛ anhweatam ne mmeae a ɛhɔ yɛ nwini te sɛ mmeae a ɛwɔ po so. Nanso, ɛwɔ ɔhaw ahorow bi nso, te sɛ nea ɛyɛ den sɛ wɔbɛsakra onwini no mu pɛpɛɛpɛ, ahoɔden a wɔde di dwuma kɛse ne dede bere a wɔreyɛ adwuma no. Enti, wɔde saa onwini kwan yi di dwuma titiriw wɔ kar nketewa bi-displacement kar ne asraafo kar engine ahorow mu.
Ɔkwan foforo so no, nsu a ɛma onwini no de coolant (anaa nsu) di dwuma sɛ ade a ɛma onwini. Bere a engine no reyɛ adwuma no, nea ɛma onwini no bɛkɔ so adi akɔneaba bere nyinaa, atwe ɔhyew a ɛboro so afi engine no mu nsu a wɔde hyɛ mu no mu, na afei asɛe no akɔ wim. Sɛnea ɔkwan a wɔfa so ma onwini no di akɔneaba no kyerɛ no, wobetumi akyekyɛ nsu a ɛma onwini no mu abiɛsa: nsu a ɛyɛ hyew, abɔde mu mogya a ɛkɔ nipadua no mu ne nea wɔhyɛ no ma ɛkyinkyini. Mprempren, wɔtaa de nsu a ɛma ɛyɛ nwini a wɔhyɛ ma ɛkyinkyini no di dwuma wɔ kar mu, a ɛde ne ho to nsu pɔmpɛ no so ma ɛma onwini no di akɔneaba wɔ engine no mu.