I-thermostat iyivalvu elawula indlela yokugeleza kwe-coolant. Iyidivayisi yokulungisa izinga lokushisa ngokuzenzakalelayo, ngokuvamile equkethe ingxenye yokuzwa izinga lokushisa, evula futhi ivale ukugeleza komoya, igesi noma uketshezi ngokwandiswa kokushisa noma ukufinyela okubandayo.
I-thermostat ilungisa ngokuzenzakalelayo inani lamanzi angena ku-radiator ngokwezinga lokushisa lamanzi apholile, futhi ishintsha ibanga lokujikeleza kwamanzi ukuze ilungise amandla okushisa ohlelweni lokupholisa futhi iqinisekise ukuthi injini isebenza ngaphakathi kwebanga lokushisa elifanele. I-thermostat kumele igcinwe isesimweni esihle sobuchwepheshe, ngaphandle kwalokho izothinta kakhulu ukusebenza okuvamile kwenjini. Uma i-valve eyinhloko ye-thermostat ivulwa sekwephuzile, izobangela ukuba injini ishise ngokweqile; uma i-valve eyinhloko ivulwa kusenesikhathi, isikhathi sokufudumeza injini sizokwelulwa futhi izinga lokushisa lenjini lizoba phansi kakhulu.
Sekukonke, indima ye-thermostat ukuvimbela injini ukuba ingabi bandayo kakhulu. Isibonelo, ngemva kokuba injini isebenza kahle, izinga lokushisa lenjini lingase libe phansi kakhulu uma kungekho thermostat lapho ushayela ebusika. Ngalesi sikhathi, injini idinga ukumisa okwesikhashana ukungajikelezi kwamanzi ukuqinisekisa ukuthi izinga lokushisa lenjini aliphansi kakhulu.
Indlela i-thermostat ye-wax esebenza ngayo
I-thermostat eyinhloko esetshenziswayo i-thermostat yohlobo lwe-wax. Uma izinga lokushisa lokupholisa liphansi kunenani elibekiwe, i-parafini ehlanziwe emzimbeni ozwa izinga lokushisa le-thermostat iqinile, futhi i-valve ye-thermostat ivaliwe phakathi kwenjini ne-radiator ngaphansi kokusebenza kwentwasahlobo. I-coolant ibuyiselwa enjinini ngephampu yamanzi ukuze kujikeleze kancane enjinini. Lapho izinga lokushisa le-coolant lifinyelela inani elibekiwe, i-parafini iqala ukuncibilika futhi kancane kancane iba uketshezi, futhi ivolumu iyanda futhi ithubhu yerabha iyacindezelwa ukuze inciphe. Lapho ithubhu yerabha incipha, kufakwa ukusunduza phezulu entongeni yokusunduza, futhi i-push rod inokudonsa okuphambene phansi evalvini ukuvula i-valve. Ngalesi sikhathi, i-coolant igeleza nge-radiator kanye ne-thermostat valve, bese igeleza iphindela enjinini ngephampu yamanzi umjikelezo omkhulu. Iningi lama-thermostat lihlelwe epayipini lokuphuma kwamanzi lekhanda lesilinda. Inzuzo yalokhu ukuthi isakhiwo silula, futhi kulula ukususa amabhamuza omoya ohlelweni lokupholisa; ububi ukuthi i-thermostat ivame ukuvulwa futhi ivalwe ngesikhathi sokusebenza, okuholela ekunyakazeni.
Isinqumo sikahulumeni
Uma injini iqala ukubanda, uma kukhona amanzi okupholisa aphuma epayipini lokungena legumbi lamanzi elingaphezulu lethangi lamanzi, kusho ukuthi ivalvu eyinhloko ye-thermostat ayikwazi ukuvalwa; uma izinga lokushisa lamanzi okupholisa enjini lidlula u-70 ℃, igumbi lamanzi elingaphezulu lethangi lamanzi liyangena. Uma kungekho manzi okupholisa aphuma epayipini lamanzi, kusho ukuthi ivalvu eyinhloko ye-thermostat ayikwazi ukuvulwa ngokujwayelekile, futhi ukulungiswa kuyadingeka ngalesi sikhathi. Ukuhlolwa kwe-thermostat kungenziwa emotweni kanje:
Ukuhlolwa ngemva kokuqaliswa kwenjini: Vula isembozo sokungenisa amanzi se-radiator, uma izinga lokupholisa ku-radiator lingashintshi, kusho ukuthi i-thermostat isebenza kahle; ngaphandle kwalokho, kusho ukuthi i-thermostat ayisebenzi kahle. Lokhu kungenxa yokuthi lapho izinga lokushisa lamanzi lingaphansi kuka-70°C, isilinda sokwandisa se-thermostat sisesimweni sokuncishiswa futhi ivalvu eyinhloko ivaliwe; lapho izinga lokushisa lamanzi liphakeme kuno-80°C, isilinda sokwandisa siyakhula, ivalvu eyinhloko ivuleka kancane kancane, futhi amanzi ajikelezayo ku-radiator aqala ukugeleza. Lapho igeyiji yokushisa kwamanzi ikhombisa ngaphansi kuka-70°C, uma kukhona amanzi ageleza epayipini lokungenisa le-radiator futhi izinga lokushisa lamanzi lifudumele, kusho ukuthi ivalvu eyinhloko ye-thermostat ayivaliwe kahle, okubangela ukuba amanzi apholile ajikeleze ngaphambi kwesikhathi.
Hlola ngemva kokwenyuka kwezinga lokushisa lamanzi: Esigabeni sokuqala sokusebenza kwenjini, izinga lokushisa lamanzi likhuphuka ngokushesha; lapho igeyiji lokushisa lamanzi ibonisa u-80, izinga lokushisa liyehla, okubonisa ukuthi i-thermostat isebenza kahle. Ngokuphambene nalokho, uma izinga lokushisa lamanzi belilokhu likhuphuka ngokushesha, lapho ingcindezi yangaphakathi ifinyelela ezingeni elithile, amanzi abilayo ayagcwala ngokuzumayo, okusho ukuthi ivalvu eyinhloko ibambeke futhi ivuleke ngokuzumayo.
Uma igeyiji yokushisa kwamanzi ikhomba u-70°C-80°C, vula isembozo se-radiator kanye neswishi yokukhipha amanzi ye-radiator, bese uzwa izinga lokushisa kwamanzi ngesandla. Uma kokubili kushisa, kusho ukuthi i-thermostat isebenza kahle; uma izinga lokushisa lamanzi endaweni yokungena amanzi ye-radiator liphansi, futhi i-radiator igcwele. Uma kungekho manzi aphumayo noma amanzi amancane agelezayo epayipini lokungena kwamanzi legumbi, kusho ukuthi i-valve eyinhloko ye-thermostat ayikwazi ukuvulwa.
I-thermostat ebambeke noma engavaliwe kahle kufanele isuswe ukuze ihlanzwe noma ilungiswe, futhi akufanele isetshenziswe ngokushesha.
Ukuhlolwa okuvamile
Isimo sokushintsha i-thermostat
Isimo sokushintsha i-thermostat
Ngokusho kolwazi, impilo ephephile ye-thermostat ye-wax ngokuvamile ingamakhilomitha angu-50,000, ngakho-ke kudingeka ukuthi ishintshwe njalo ngokwempilo yayo ephephile.
Indawo ye-thermostat
Indlela yokuhlola ye-thermostat ukuhlola izinga lokushisa lokuvula, izinga lokushisa elivulekile ngokuphelele kanye nokuphakamisa ivalvu eyinhloko ye-thermostat emishinini yokushisa eguquguqukayo yokushisa njalo. Uma enye yazo ingahlangabezani nenani elibekiwe, i-thermostat kufanele ishintshwe. Isibonelo, kwi-thermostat yenjini ye-Santana JV, izinga lokushisa lokuvula levalvu eyinhloko lingu-87°C kanye noma lingaphansi kuka-2°C, izinga lokushisa elivulekile ngokuphelele lingu-102°C kanye noma lingaphansi kuka-3°C, kanti i-lift evulekile ngokuphelele ingu->7mm.
Ukuhlelwa kwe-thermostat
Ngokuvamile, i-coolant yesistimu yokupholisa amanzi igeleza isuka emzimbeni bese igeleza isuka ekhanda lesilinda. Ama-thermostat amaningi atholakala emgqeni wokukhipha ikhanda lesilinda. Inzuzo yalolu hlelo ukuthi isakhiwo silula, futhi kulula ukususa amabhamuza omoya ohlelweni lokupholisa amanzi; ububi ukuthi ukunyakazisa kwenzeka lapho i-thermostat isebenza.
Isibonelo, uma uqala injini ebandayo ebusika, ivalvu ye-thermostat ivaliwe ngenxa yokushisa okuphansi kwe-coolant. Uma i-coolant isesimeni esincane, izinga lokushisa likhuphuka ngokushesha bese ivalvu ye-thermostat ivuleka. Ngesikhathi esifanayo, i-coolant ephansi e-radiator igeleza emzimbeni, ukuze i-coolant iphole futhi, bese ivalvu ye-thermostat ivalwe futhi. Lapho izinga lokushisa le-coolant likhuphuka futhi, ivalvu ye-thermostat ivuleka futhi. Kuze kube yilapho izinga lokushisa layo yonke i-coolant lizinzile, ivalvu ye-thermostat izozinza futhi ngeke ivuleke futhi ivalwe ngokuphindaphindiwe. Isenzakalo sokuthi ivalvu ye-thermostat ivulwa futhi ivalwe ngokuphindaphindiwe esikhathini esifushane sibizwa ngokuthi i-thermostat oscillation. Uma lesi simo senzeka, sizokwandisa ukusetshenziswa kukaphethiloli emotweni.
I-thermostat ingahlelwa futhi epayipini lokuphuma kwamanzi le-radiator. Lokhu kuhlelwa kunganciphisa noma kuqede ukwenzeka kokunyakazisa kwe-thermostat, futhi kungalawula ngokunembile izinga lokushisa le-coolant, kodwa isakhiwo sayo siyinkimbinkimbi futhi izindleko ziphakeme, futhi isetshenziswa kakhulu ezimotweni ezisebenza kahle kakhulu nasezimotweni ezivame ukushayela ngesivinini esikhulu ebusika. [2]
Ukuthuthukiswa kwe-Wax Thermostat
Ukuthuthukiswa Kwezingxenye Zedrayivu Ezilawulwa Ukushisa
I-Shanghai University of Engineering and Technology ithuthukise uhlobo olusha lwe-thermostat ene-paraffin thermostat njengomzimba womzali kanye ne-cylindrical coil spring-shape-based coil memory alloy njengesici sokulawula izinga lokushisa. I-thermostat ikhetha intwasahlobo lapho izinga lokushisa lesilinda sokuqala semoto liphansi, kanti i-compression alloy spring yenza i-main valve ivaleke futhi i-assistant valve ivuleke umjikelezo omncane. Lapho izinga lokushisa le-coolant likhuphuka liye enanini elithile, i-memory alloy spring iyakhula futhi icindezele i-bias. Intwasahlobo yenza i-main valve ye-thermostat ivuleke, futhi njengoba izinga lokushisa le-coolant likhuphuka, ukuvulwa kwe-main valve kuyanda kancane kancane, futhi i-assistant valve ivala kancane kancane ukuze yenze umjikelezo omkhulu.
Njengeyunithi yokulawula izinga lokushisa, i-memory alloy yenza isenzo sokuvulwa kwe-valve sishintshe kahle ngokushisa, okuzuzisa ukunciphisa umthelela wokucindezeleka kokushisa kwamanzi okupholisa asezingeni eliphansi ethangini lamanzi ku-cylinder block lapho injini yokushisa yangaphakathi iqala, futhi ngesikhathi esifanayo ithuthukisa impilo yesevisi ye-thermostat. Kodwa-ke, i-thermostat iguqulwa ngokusekelwe ku-wax thermostat, futhi ukwakheka kwesakhiwo se-element ye-drive yokulawula izinga lokushisa kunqunyelwe ngezinga elithile.
Ukuthuthukiswa kwamavalvu
I-thermostat inomthelela wokugoqa uketshezi olupholisayo. Ukulahleka koketshezi olupholisayo olugeleza nge-thermostat kuholela ekulahlekelweni kwamandla kwenjini yokushisa yangaphakathi, okungenakunakwa. I-valve yakhelwe njengesilinda esincane esinezimbobo odongeni oluseceleni, kanti isiteshi sokugeleza koketshezi sakhiwa yimbobo eseceleni kanye nembobo ephakathi, kanti ithusi noma i-aluminium kusetshenziswa njengezinto ze-valve ukwenza ubuso be-valve bube bushelelezi, ukuze kuncishiswe ukumelana futhi kuthuthukiswe izinga lokushisa.
Ukulungiswa kwesekethe yokugeleza kwe-cooling medium
Isimo esifanelekile sokusebenza ngokushisa kwenjini yokushisa yangaphakathi ukuthi izinga lokushisa lekhanda lesilinda liphansi kakhulu kanti izinga lokushisa lebhulokhi yesilinda liphezulu kakhulu. Ngenxa yalesi sizathu, kuvela uhlelo lokupholisa oluhlukanisiwe iai, futhi isakhiwo kanye nendawo yokufaka ye-thermostat kudlala indima ebalulekile kuyo. Isakhiwo sokufakwa komsebenzi ohlangene wama-thermostat, ama-thermostat amabili afakwe ku-bracket efanayo, inzwa yokushisa ifakiwe ku-thermostat yesibili, 1/3 yokugeleza kokupholisa isetshenziselwa ukupholisa ibhulokhi yesilinda, 2/3 Ukugeleza kokupholisa isetshenziselwa ukupholisa ikhanda lesilinda.
