I-Thermostat uhlobo lwedivayisi elawula ukushisa okuzenzakalelayo, evame ukuba nengxenye yokuzwa ukushisa, ngokwandisa noma ukunciphisa ukuvula nokuvala ukugeleza koketshezi olupholile, okungukuthi, ukulungisa amanzi ngokuzenzakalelayo kurediyetha ngokuya ngokushisa koketshezi olupholile, ukushintsha ububanzi bokujikeleza koketshezi olupholile, ukulungisa amandla okushisa ohlelweni lokupholisa.
I-thermostat eyinhloko yenjini yi-thermostat yohlobo lwe-wax, elawulwa yi-parafini ngaphakathi ngesimiso sokwanda kokushisa kanye nokuncipha kokubanda ukulawula ukujikeleza kwe-coolant. Lapho izinga lokushisa lokupholisa liphansi kunenani elibekiwe, i-parafini ehlanziwe emzimbeni wokuzwa izinga lokushisa kwe-thermostat iqinile, i-valve ye-thermostat ngaphansi kwesenzo sesiphethu ukuvala isiteshi phakathi kwenjini ne-radiator, i-coolant ngephampu yamanzi ukubuyela enjinini, umjikelezo wenjini omncane. Lapho izinga lokushisa le-coolant lifinyelela enanini elibekiwe, i-parafini iqala ukuncibilika futhi kancane kancane iba uketshezi, futhi ivolumu iyanda futhi icindezele ithubhu yerabha ukuze inciphe. Ngesikhathi esifanayo, ithubhu yerabha iyancipha futhi isebenzise ukusunduza phezulu entongeni yokusunduza. Induku yokusunduza inokucindezela phansi evalweni ukuze ivuleke. Ngalesi sikhathi, i-coolant igeleza nge-radiator kanye ne-thermostat valve, bese igeleza iphindela enjinini ngephampu yamanzi ukuze kujikeleze kakhulu. Iningi le-thermostat lihlelwe epayipini lokuphuma kwamanzi lekhanda lesilinda, elinenzuzo yesakhiwo esilula futhi kulula ukukhipha amabhamuza ohlelweni lokupholisa; Ububi ukuthi i-thermostat ivame ukuvula nokuvala lapho isebenza, okudala ukuguquguquka.
Uma izinga lokushisa lokusebenza kwenjini liphansi (ngaphansi kuka-70°C), i-thermostat ivala ngokuzenzakalelayo indlela eholela ku-radiator, bese ivula indlela eholela empompini yamanzi. Amanzi okupholisa aphuma ejakethini lamanzi angena empompini yamanzi ngqo ngepayipi, bese ethunyelwa ejakethini lamanzi ngepompo yamanzi ukuze ajikeleze. Ngenxa yokuthi amanzi okupholisa awanyamalali yi-radiator, izinga lokushisa lokusebenza lenjini lingakhuphuka ngokushesha. Uma izinga lokushisa lokusebenza lenjini liphezulu (ngaphezu kuka-80°C), i-thermostat ivala ngokuzenzakalelayo indlela eholela empompini yamanzi, bese ivula indlela eholela empompini. Amanzi okupholisa aphuma ejakethini lamanzi apholiswa yi-radiator bese ethunyelwa ejakethini lamanzi ngepompo yamanzi, okuthuthukisa ukuqina kokupholisa futhi kuvimbele injini ekushiseni ngokweqile. Lo mzila womjikelezo ubizwa ngokuthi umjikelezo omkhulu. Uma izinga lokushisa lokusebenza kwenjini liphakathi kuka-70°C no-80°C, imijikelezo emikhulu nemincane ikhona ngesikhathi esisodwa, okungukuthi, ingxenye yamanzi okupholisa omjikelezo omkhulu, kanye nenye ingxenye yamanzi okupholisa omjikelezo omncane.
Umsebenzi we-thermostat yemoto ukuvala imoto ngaphambi kokuba izinga lokushisa lingafiki ezingeni lokushisa elijwayelekile. Ngalesi sikhathi, uketshezi olupholile lwenjini lubuyiselwa enjinini ngephampu yamanzi, futhi ukujikeleza okuncane enjinini kwenziwa ukuze injini ifudumale ngokushesha. Uma izinga lokushisa lidlula izinga elijwayelekile lingavulwa, ukuze uketshezi olupholile ludlule kulo lonke ithangi le-radiator ukuze kujikelezwe kakhulu, ukuze kusheshiswe ukushabalaliswa kokushisa.
