I-thermostat yivalvu elawula indlela yokuhamba kwe-coolant. Sisixhobo sokulungisa ubushushu ngokuzenzekelayo, esihlala siqulethe icandelo lokuva ubushushu, elivula kwaye livale ukuhamba komoya, igesi okanye ulwelo ngokwandiswa kobushushu okanye ukuxinana okubandayo.
I-thermostat ilungisa ngokuzenzekelayo ubungakanani bamanzi angena kwi-radiator ngokweqondo lobushushu bamanzi okupholisa, kwaye itshintsha uluhlu lokujikeleza kwamanzi ukuze ilungise amandla okusasaza ubushushu kwenkqubo yokupholisa kwaye iqinisekise ukuba injini isebenza ngaphakathi komgangatho wobushushu ofanelekileyo. I-thermostat kufuneka igcinwe ikwimeko entle yobuchwepheshe, kungenjalo iya kuchaphazela kakhulu ukusebenza kwesiqhelo kwenjini. Ukuba ivalvu ephambili ye-thermostat ivulwe kade, iya kubangela ukuba injini ishushu kakhulu; ukuba ivalvu ephambili ivulwe kwangethuba, ixesha lokufudumeza injini liya kwanda kwaye ubushushu benjini buya kuba phantsi kakhulu.
Lilonke, indima ye-thermostat kukugcina injini ingabandi kakhulu. Umzekelo, emva kokuba injini isebenza ngokuqhelekileyo, ubushushu benjini bunokuba sezantsi kakhulu ukuba akukho thermostat xa uqhuba ebusika. Ngeli xesha, injini kufuneka iyeke okwethutyana ukungajikelezi kwamanzi ukuqinisekisa ukuba ubushushu benjini abuphantsi kakhulu.
Indlela esebenza ngayo i-thermostat ye-wax
I-thermostat ephambili esetyenziswayo yi-thermostat yohlobo lwe-wax. Xa ubushushu bokupholisa buphantsi kunexabiso elichaziweyo, iparafini ecociweyo emzimbeni oqonda ubushushu be-thermostat iqinile, kwaye ivalvu ye-thermostat ivaliwe phakathi kwenjini kunye ne-radiator phantsi kwentshukumo yentwasahlobo. I-coolant ibuyiselwa enjinini ngepompo yamanzi ukuze ijikeleze kancinci enjinini. Xa ubushushu be-coolant bufikelela kwixabiso elichaziweyo, iparafini iqala ukunyibilika kwaye kancinci kancinci ibe lulwelo, kwaye umthamo uyanda kwaye ityhubhu yerabha icinezelwe ukuze inciphe. Xa ityhubhu yerabha incipha, kufakwa i-push thrust phezulu kwi-push rod, kwaye i-push rod ine-downward reverse thrust kwi-valve ukuvula ivalvu. Ngeli xesha, i-coolant idlula kwi-radiator kunye ne-thermostat valve, ize ibuyele enjinini ngepompo yamanzi umjikelo omkhulu. Uninzi lwee-thermostat zicwangciswe kumbhobho wamanzi wentloko yesilinda. Inzuzo yoku kukuba isakhiwo silula, kwaye kulula ukususa amaqamza omoya kwinkqubo yokupholisa; ingxaki kukuba i-thermostat idla ngokuvulwa kwaye ivalwe ngexesha lokusebenza, okubangela ukushukuma.
Isigwebo sikaRhulumente
Xa injini iqala ukubanda, ukuba kukho amanzi okupholisa aphuma kumbhobho wokungena wegumbi lamanzi eliphezulu letanki yamanzi, oko kuthetha ukuba ivalvu ephambili ye-thermostat ayinakuvalwa; xa ubushushu bamanzi okupholisa enjini budlula i-70 ℃, igumbi lamanzi eliphezulu letanki yamanzi liyangena. Ukuba akukho manzi okupholisa aphuma kumbhobho wamanzi, oko kuthetha ukuba ivalvu ephambili ye-thermostat ayinakuvulwa ngokuqhelekileyo, kwaye kufuneka ukulungiswa ngeli xesha. Ukuhlolwa kwe-thermostat kungenziwa kwisithuthi ngolu hlobo lulandelayo:
Ukuhlolwa emva kokuba injini iqalisiwe: Vula isigqubuthelo sokungenisa amanzi kwiradiyatha, ukuba inqanaba lokupholisa kwiradiyatha aliguquki, kuthetha ukuba i-thermostat isebenza ngokuqhelekileyo; kungenjalo, kuthetha ukuba i-thermostat ayisebenzi kakuhle. Oku kungenxa yokuba xa ubushushu bamanzi buphantsi kwama-70°C, isilinda yokwandisa ye-thermostat ikwimeko yokunqongophala kwaye ivalvu ephambili ivaliwe; xa ubushushu bamanzi buphezulu kwama-80°C, isilinda yokwandisa iyakhula, ivalvu ephambili ivuleka kancinci kancinci, kwaye amanzi ajikelezayo kwiradiyatha aqala ukuhamba. Xa igeyiji yobushushu bamanzi ibonisa ngaphantsi kwama-70°C, ukuba kukho amanzi ahamba kumbhobho wokungenisa weradiyatha kwaye ubushushu bamanzi bufudumele, kuthetha ukuba ivalvu ephambili ye-thermostat ayivalwanga kakuhle, nto leyo ebangela ukuba amanzi okupholisa ajikeleze ngaphambi kwexesha.
Jonga emva kokuba ubushushu bamanzi bunyukile: Kwinqanaba lokuqala lokusebenza kwenjini, ubushushu bamanzi bunyuka ngokukhawuleza; xa igeyiji yobushushu bamanzi ibonisa ama-80, izinga lokufudumeza liyehla, nto leyo ebonisa ukuba i-thermostat isebenza ngokuqhelekileyo. Ngokwahlukileyo koko, ukuba ubushushu bamanzi buye benyuka ngokukhawuleza, xa uxinzelelo lwangaphakathi lufikelela kwinqanaba elithile, amanzi abilayo aphuphuma ngequbuliso, nto leyo ethetha ukuba ivalvu ephambili ibambekile kwaye ivuleke ngequbuliso.
Xa igeyiji yobushushu bamanzi ibonisa i-70°C-80°C, vula isigqubuthelo se-radiator kunye neswitshi yokukhupha amanzi ye-radiator, uze uzive ubushushu bamanzi ngesandla. Ukuba zombini zishushu, oko kuthetha ukuba i-thermostat isebenza ngokuqhelekileyo; ukuba ubushushu bamanzi kwindawo yokungena amanzi ye-radiator buphantsi, kwaye i-radiator igcwele. Ukuba akukho manzi aphumayo okanye amanzi amancinci aphumayo kumbhobho wokungena wamanzi wegumbi, oko kuthetha ukuba ivalvu ephambili ye-thermostat ayinakuvulwa.
I-thermostat ebambeke okanye engavalwanga kakuhle kufuneka isuswe ukuze icocwe okanye ilungiswe, kwaye akufuneki isetyenziswe ngoko nangoko.
Ukuhlolwa rhoqo
Isimo sokutshintsha i-thermostat
Isimo sokutshintsha i-thermostat
Ngokwengxelo, ubomi obukhuselekileyo be-thermostat ye-wax buhlala buyi-50,000km, ngoko ke kufuneka itshintshwe rhoqo ngokwempilo yayo ekhuselekileyo.
Indawo ye-thermostat
Indlela yokuhlola i-thermostat kukujonga ubushushu bokuvula, ubushushu obuvulekileyo ngokupheleleyo kunye nokuphakamisa ivalvu ephambili ye-thermostat kwizixhobo zokufudumeza eziguquguqukayo zobushushu obuqhelekileyo. Ukuba enye yazo ayifikeleli kwixabiso elichaziweyo, i-thermostat kufuneka itshintshwe. Umzekelo, kwi-thermostat yenjini yeSantana JV, ubushushu bokuvula bevalvu ephambili yi-87°C ngaphezulu okanye ngaphantsi kwe-2°C, ubushushu obuvulekileyo ngokupheleleyo yi-102°C ngaphezulu okanye ngaphantsi kwe-3°C, kwaye ukuphakamisa okuvulekileyo ngokupheleleyo yi->7mm.
Ulungiselelo lwe-thermostat
Ngokubanzi, i-coolant yenkqubo yokupholisa amanzi iphuma emzimbeni ize iphume entloko yesilinda. Uninzi lwee-thermostat zikwi-outlet head outlet line. Inzuzo yolu lungiselelo kukuba ulwakhiwo lulula, kwaye kulula ukususa amaqamza omoya kwinkqubo yokupholisa amanzi; ingxaki kukuba i-oscillation iyenzeka xa i-thermostat isebenza.
Umzekelo, xa uqalisa injini ebandayo ebusika, ivalvu ye-thermostat ivaliwe ngenxa yobushushu obuphantsi be-coolant. Xa i-coolant ikwi-cycle encinci, ubushushu bunyuka ngokukhawuleza kwaye ivalvu ye-thermostat ivuleka. Kwangaxeshanye, i-coolant yobushushu obuphantsi kwi-radiator ingena emzimbeni, ukuze i-coolant iphole kwakhona, kwaye ivalvu ye-thermostat ivalwe kwakhona. Xa ubushushu be-coolant bunyuka kwakhona, ivalvu ye-thermostat ivuleka kwakhona. De kube ubushushu bayo yonke i-coolant buzinzile, ivalvu ye-thermostat iya kuzinza kwaye ayivuli kwaye ivalwe ngokuphindaphindiweyo. Imeko yokuba ivalvu ye-thermostat ivulwa kwaye ivalwe ngokuphindaphindiweyo kwixesha elifutshane ibizwa ngokuba yi-thermostat oscillation. Xa le meko isenzeka, iya kunyusa ukusetyenziswa kwepetroli emotweni.
I-thermostat ingalungiswa nakwipayipi yokuphuma kwamanzi yeradiator. Olu lungiselelo lunokunciphisa okanye luphelise i-oscillation ye-thermostat, kwaye lunokulawula ngokuchanekileyo ubushushu be-coolant, kodwa ulwakhiwo lwayo luyinkimbinkimbi kwaye ixabiso liphezulu, kwaye isetyenziswa kakhulu kwiimoto ezisebenza kakuhle kunye neemoto ezihlala ziqhuba ngesantya esiphezulu ebusika. [2]
Ukuphuculwa kweWax Thermostat
Uphuculo kwiCandelo leDrive eliLawulwa bubushushu
IYunivesithi yoBunjineli neTekhnoloji yaseShanghai iphuhlise uhlobo olutsha lwe-thermostat ene-paraffin thermostat njengomzimba womzali kunye ne-cylindrical coil spring-shaped copper-shape memory alloy njengento yokulawula ubushushu. I-thermostat ikhetha intwasahlobo xa ubushushu besilinda yokuqala yemoto buphantsi, kwaye i-compression alloy spring yenza i-main valve ivale kwaye i-assistant valve ivuleke umjikelo omncinci. Xa ubushushu be-coolant bunyuka ukuya kwixabiso elithile, i-memory alloy spring iyakhula kwaye icinezele i-bias. I-spring yenza i-main valve ye-thermostat ivuleke, kwaye njengoko ubushushu be-coolant bunyuka, ukuvulwa kwe-main valve kuyanda kancinci kancinci, kwaye i-assistant valve ivala kancinci kancinci ukuze yenze umjikelo omkhulu.
Njengeyunithi yokulawula ubushushu, i-memory alloy yenza ukuba isenzo sokuvulwa kwevalvu sitshintshe ngokutyibilikayo ngobushushu, nto leyo eluncedo ekunciphiseni impembelelo yoxinzelelo lobushushu lwamanzi okupholisa kubushushu obuphantsi kwitanki yamanzi kwi-cylinder block xa injini yokutshisa yangaphakathi iqala, kwaye kwangaxeshanye iphucula ubomi benkonzo ye-thermostat. Nangona kunjalo, i-thermostat iguqulwa ngokusekelwe kwi-wax thermostat, kwaye uyilo lwesakhiwo se-thermostat control control element lunqunyelwe kwinqanaba elithile.
Ukuphuculwa kweeValve
I-thermostat inefuthe lokuthomalalisa ulwelo olupholisayo. Ukulahleka kolwelo olupholisayo oluhamba nge-thermostat kukhokelela ekulahlekelweni kwamandla kwenjini yokutsha yangaphakathi, into engenakuyityeshelwa. Ivalvu yenzelwe njengesilinda esincinci esineemingxunya eludongeni olusecaleni, kwaye umjelo wokuhamba kolwelo wenziwa ngumngxuma osecaleni kunye nomngxuma ophakathi, kwaye ubhedu okanye i-aluminium isetyenziswa njengesixhobo sevalvu ukwenza umphezulu wevalvu ube mpuluswa, ukuze kuncitshiswe ukumelana nokuphucula ubushushu.
Ukulungiswa kwesekethe yokuhamba kwesixhobo sokupholisa
Imeko efanelekileyo yokusebenza ngobushushu yenjini yokutsha yangaphakathi kukuba ubushushu bentloko yesilinda buphantsi kwaye ubushushu bebhloko yesilinda buphezulu. Ngenxa yesi sizathu, inkqubo yokupholisa eqhekekileyo iai iyavela, kwaye ulwakhiwo kunye nendawo yokufakela ye-thermostat zidlala indima ebalulekileyo kuyo. Ulwakhiwo lofakelo lomsebenzi odibeneyo we-thermostats, ii-thermostats ezimbini zifakwe kwi-bracket enye, i-sensor yobushushu ifakiwe kwi-thermostat yesibini, i-1/3 yokuhamba kwe-coolant isetyenziselwa ukupholisa ibhloko yesilinda, 2/3 Ukuhamba kwe-coolant kusetyenziselwa ukupholisa intloko yesilinda.
