A: Chotheka choyamba cha kulephera uku ndikulephera kwa valve. Ngati chimbale cha valavu chigwera mkati mwa jenereta yamagetsi yotenthetsera nthunzi, imatsekereza njira yoyendera mpweya wotentha. Njira yothetsera vutoli ndikutsegula valavu ya valve kuti ikonzedwe, kapena kusintha valavu yolephera. Kuthekera kwachiwiri ndikuti pali gasi wochuluka mu thanki yotolera gasi, yomwe imatsekereza payipi. Njira yothetsera vutoli ndikutsegula zowonjezera zowonjezera zomwe zimayikidwa mu dongosolo, monga chitseko chotulutsa mpweya pa radiator, valve yotulutsa mpweya pa thanki yosonkhanitsa mpweya, ndi zina zotero. Pali njira ziwiri zazikulu zopezera mapaipi otsekedwa: kukhudza manja ndi madzi. Njira yogwiritsira ntchito manja ndi yakuti pamene kutentha kuli kochepa, pali vuto. Njira yotulutsira madzi ndikutulutsa gawo la madzi ndi gawo, ndikukhetsa madzi pakati pa mipope yosiyana. Ngati madzi kumbali imodzi akupitiriza kuyenda patsogolo, palibe vuto ndi mapeto awa; ngati ibwerera pambuyo pakuyenda kwa kanthawi, zikutanthauza kuti mapeto awa atsekedwa, ingosokonezani gawo ili la chitoliro ndikuchotsani.
Nthawi yotumiza: Apr-21-2023