I-thermostat sisivalo esilawula indlela yokupholisa.Sisixhobo sokulungelelanisa ubushushu obuzenzekelayo, ngokuqhelekileyo siqulathe icandelo elivavanya ubushushu, elivula kwaye licime ukuhamba komoya, igesi okanye ulwelo ngokwandiswa kwe-thermal okanye ukucutheka okubandayo.
I-thermostat ilungelelanisa ngokuzenzekelayo ubungakanani bamanzi angena kwiradiyetha ngokweqondo lobushushu bamanzi okupholisa, kwaye itshintsha uluhlu lokujikeleza kwamanzi ukulungelelanisa umthamo wokutshatyalaliswa kobushushu benkqubo yokupholisa kunye nokuqinisekisa ukuba injini isebenza ngaphakathi kwinqanaba elifanelekileyo lobushushu.I-thermostat kufuneka igcinwe ikwimeko elungileyo yobugcisa, kungenjalo iya kuchaphazela kakhulu ukusebenza okuqhelekileyo kwe-injini.Ukuba ivalve engundoqo ye-thermostat ivulwe kade kakhulu, iya kubangela ukuba injini ishushu;ukuba ivalve engundoqo ivulwe kwangoko kakhulu, ixesha lokufudumala kwe-injini liya kwandiswa kwaye nobushushu be-injini buya kuba sezantsi kakhulu.
Lilonke, indima ye-thermostat kukugcina i-injini ingabandi kakhulu.Ngokomzekelo, emva kokuba injini isebenza ngokuqhelekileyo, ubushushu be-injini busenokuba sezantsi kakhulu ukuba akukho thermostat xa uqhuba ebusika.Ngeli xesha, i-injini kufuneka imise okwexeshana ukungajikelezi kwamanzi ukuqinisekisa ukuba ubushushu be-injini abukho phantsi kakhulu.
Indlela i-thermostat esebenza ngayo
Eyona thermostat isetyenziswayo yi-wax yodidi lwe-thermostat.Xa iqondo lobushushu lokupholisa lingaphantsi kwexabiso elichaziweyo, iparafini esulungekileyo kumzimba weqondo lobushushu le-thermostat iqinile, kwaye ivalve ye-thermostat ivalwe phakathi kwe-injini kunye neradiyetha phantsi kwesenzo sentwasahlobo.Isisipholisi sibuyiselwa enjinini ngempompo yamanzi ukuze sijikelezwe kancinci enjinini.Xa ubushushu besipholisi bufikelela kwixabiso elichaziweyo, iparafini iqalisa ukunyibilika ize ngokuthe ngcembe ibe lulwelo, kwaye umthamo uyanda kwaye ityhubhu yerabha icinezelwe ukuze inciphe.Xa ityhubhu yerabha ishwabana, ukutyhala okuya phezulu kufakwa kwintonga yokutyhala, kwaye intonga yokutyhala ibe netyholo ebuyela umva ezantsi kwivalve ukuvula ivalve.Ngeli xesha, isisipholisi sihamba kwiradiyetha kunye nevalve ye-thermostat, kwaye emva koko sibuyela enjini ngempompo yamanzi kumjikelo omkhulu.Uninzi lwe-thermostats lucwangciswe kumbhobho wokuphuma kwamanzi wentloko ye-cylinder.Inzuzo yale nto kukuba isakhiwo silula, kwaye kulula ukususa ama-bubbles emoyeni kwinkqubo yokupholisa;i-disadvantage kukuba i-thermostat isoloko ivuliwe kwaye ivaliwe ngexesha lokusebenza, okubangela i-oscillation.
chaza isigwebo
Xa injini iqalisa ukubanda, ukuba kukho amanzi apholisayo aphuma kumbhobho wokungena wegumbi eliphezulu lamanzi letanki yamanzi, oko kuthetha ukuba ivalve engundoqo ye-thermostat ayinakuvalwa;xa ubushushu bamanzi okupholisa enjini budlula ama-70 ℃, igumbi eliphezulu lamanzi letanki lamanzi lingena ukuba akukho manzi okupholisa aphuma kumbhobho wamanzi, oko kuthetha ukuba ivalve engundoqo ye-thermostat ayinakuvulwa ngokuqhelekileyo, kwaye ulungiso luyafuneka ngeli xesha.Ukuhlolwa kwe-thermostat kunokwenziwa kwisithuthi ngolu hlobo lulandelayo:
Ukuhlolwa emva kokuba injini iqalisiwe: Vula isigqubuthelo sokungena kwamanzi kwiradiyetha, ukuba inqanaba lokupholisa kwiradiyetha limile, oko kuthetha ukuba i-thermostat isebenza ngokuqhelekileyo;ngaphandle koko, kuthetha ukuba i-thermostat ayisebenzi kakuhle.Oku kungenxa yokuba xa ubushushu bamanzi bungaphantsi kwama-70 ° C, i-cylinder yokwandisa i-thermostat ikwimeko yesivumelwano kwaye i-valve engundoqo ivaliwe;xa izinga lokushisa lamanzi liphezulu kune-80 ° C, i-cylinder yokwandisa iyanda, i-valve eyintloko ivula ngokuthe ngcembe, kwaye amanzi ajikelezayo kwi-radiator aqala ukuhamba.Xa igeyiji yobushushu bamanzi ibonisa ngaphantsi kwe-70 ° C, ukuba kukho amanzi agelezayo kumbhobho wokungena we-radiator kunye nobushushu bamanzi bufudumele, oko kuthetha ukuba i-valve engundoqo ye-thermostat ayivalwanga ngokuqinileyo, ebangela ukuba amanzi okupholisa ajikeleze. kwangaphambi kwexesha.
Khangela emva kokunyuka kobushushu bamanzi: Kwinqanaba lokuqala lomsebenzi we-injini, ukushisa kwamanzi kuphakama ngokukhawuleza;xa iqondo lokushisa lamanzi libonisa i-80, izinga lokushisa liyancipha, libonisa ukuba i-thermostat isebenza ngokuqhelekileyo.Ngokuchasene noko, ukuba ukushisa kwamanzi kuye kwanda ngokukhawuleza, xa uxinzelelo lwangaphakathi lufikelela kwinqanaba elithile, amanzi abilayo aphuphuma ngokukhawuleza, oku kuthetha ukuba i-valve eyintloko ibambelele kwaye ivule ngokukhawuleza.
Xa igeyiji yobushushu bamanzi ibonisa i-70°C-80°C, vula isigqubuthelo seradiyetha kunye nesixhobo sokucoca iradiyetha, kwaye uve ubushushu bamanzi ngesandla.Ukuba zombini zishushu, kuthetha ukuba i-thermostat isebenza ngokuqhelekileyo;ukuba iqondo lobushushu lamanzi kwi-radiator yokungena kwamanzi liphantsi, kwaye iradiyetha izaliswe Ukuba akukho manzi aphumayo okanye amanzi amancinci aqukuqelayo kumbhobho wokungena wamanzi wegumbi, oko kuthetha ukuba ivalve engundoqo ye-thermostat ayinakuvulwa.
I-thermostat ebambelele okanye engavalwanga ngokuqinileyo kufuneka isuswe ukuze icocwe okanye ilungiswe, kwaye akufanele isetyenziswe ngokukhawuleza.
Ukuhlolwa rhoqo
Ubume bokutshintsha kweThermostat
Ubume bokutshintsha kweThermostat
Ngokolwazi, ubomi obukhuselekileyo be-wax thermostat ngokuqhelekileyo bungama-50,000km, ngoko ke kufuneka kutshintshwe rhoqo ngokobomi bayo obukhuselekileyo.
Indawo yeThermostat
Indlela yokuhlola i-thermostat kukujonga ubushushu bokuvula, ubushushu obuvulelekileyo ngokupheleleyo kunye nokunyuswa kwevalve ephambili ye-thermostat kwiqondo lobushushu eliguquguqukayo eliguquguqukayo lokufudumeza izixhobo.Ukuba enye yazo ayihlangabezani nexabiso elichaziweyo, i-thermostat kufuneka itshintshwe.Umzekelo, kwi-thermostat ye-injini ye-Santana JV, ubushushu bokuvulwa kwevalve ephambili yi-87 ° C kunye okanye thabatha i-2 ° C, iqondo lokushisa elivuleke ngokupheleleyo yi-102 ° C kunye okanye thabatha 3 ° C, kunye nokuphakanyiswa okuvulekile ngokupheleleyo. yi>7mm.
Ulungiselelo lweThermostat
Ngokubanzi, isisipholisi senkqubo yokupholisa amanzi iphuma emzimbeni kwaye iphuma kwintloko yesilinda.Uninzi lwe-thermostats lubekwe kumgca we-cylinder head outlet line.Inzuzo yolu lungiselelo kukuba isakhiwo silula, kwaye kulula ukususa ama-bubbles emoyeni kwinkqubo yokupholisa amanzi;into engalunganga kukuba i-oscillation iyenzeka xa i-thermostat isebenza.
Umzekelo, xa uqala injini ebandayo ebusika, ivalve ye-thermostat ivaliwe ngenxa yobushushu obuphantsi bokupholisa.Xa isisipholisi sikumjikelo omncinci, ubushushu bunyuka ngokukhawuleza kwaye ivalve ye-thermostat iyavuleka.Kwangaxeshanye, isisipholisi esinobushushu obuphantsi kwiradiyetha singena emzimbeni, ukuze isisipholisi siphole kwakhona, kwaye ivalve ye-thermostat ivalwe kwakhona.Xa iqondo lokupholisa linyuka kwakhona, ivalve ye-thermostat iyavuleka kwakhona.De ubushushu baso sonke isisipholisi sizinzile, ivalve ye-thermostat iya kuzinza kwaye ayiyi kuvuleka kwaye ivale ngokuphindaphindiweyo.Isenzeko sokuba ivalve ye-thermostat ivulwe ngokuphindaphindiweyo kwaye ivalwe ngexesha elifutshane ibizwa ngokuba yi-thermostat oscillation.Xa le nto isenzeka, iya kwandisa ukusetyenziswa kwamafutha emoto.
I-thermostat nayo inokulungiswa kumbhobho wokukhupha amanzi we-radiator.Eli lungiselelo linokunciphisa okanye liphelise i-oscillation phenomenon ye-thermostat, kwaye inokulawula ngokuchanekileyo ubushushu besipholisi, kodwa isakhiwo sayo sinzima kwaye ixabiso liphezulu, kwaye lisetyenziswa kakhulu kwiimoto ezisebenza kakhulu kunye neemoto ezihlala ziqhuba isantya esiphezulu ebusika.[2]
Ukuphuculwa kweWax Thermostat
Ukuphuculwa koBubushushu obuLawulwayo kumacandelo okuqhuba
IYunivesithi yaseShanghai yobuNjineli neTekhnoloji iphuhlise uhlobo olutsha lwethermostat eneparafini ithermostat njengomzimba wabazali kunye necylindrical coil emile okwentwasahlobo-ekwimilo yenkumbulo ye-copper-based shape memory alloy njengesixhobo sokulawula ubushushu.I-thermostat biases entwasahlobo xa ubushushu be-cylinder yokuqala yemoto iphantsi, kwaye i-compress alloy spring yenza i-valve engundoqo ivale kwaye i-valve encedisayo ivule umjikelo omncinci.Xa ubushushu bokupholisa bunyukela kwixabiso elithile, i-memory alloy spring iyanda kwaye icinezele i-bias.Intwasahlobo yenza ivalve ephambili ye-thermostat ivuleke, kwaye njengoko ubushushu bokupholisa bukhula, ukuvulwa kwevalve ephambili kuyanda, kwaye ivalve encedisayo ivala ngokuthe ngcembe ukwenza umjikelo omkhulu.
Njengeyunithi yokulawula ubushushu, i-alloy yememori yenza ukuba isenzo sokuvula ivalve sitshintshe ngokufanelekileyo kunye nobushushu, nto leyo eluncedo ekunciphiseni impembelelo yoxinzelelo lwe-thermal yobushushu obuphantsi bokupholisa amanzi kwitanki yamanzi kwibhloko ye-cylinder xa injini yokutsha yangaphakathi iqala, kwaye ngexesha elifanayo liphucula ubomi benkonzo ye-thermostat.Nangona kunjalo, i-thermostat iguqulwa ngesiseko se-thermostat ye-wax, kunye noyilo lwesakhiwo sesici sokulawula ubushushu silinganiselwe kwinqanaba elithile.
Uphuculo lweValve
I-thermostat inefuthe lokupholisa kulwelo olupholisayo.Ukulahleka kolwelo olupholisayo oluhamba nge-thermostat lukhokelela ekulahlekelweni kwamandla enjini yokutsha yangaphakathi, engenakuhoywa.Ivalve iyilwe njengesilinda esibhityileyo esinemingxuma eludongeni olusecaleni, kwaye umjelo wokuhamba kolwelo wenziwa ngomngxuma osecaleni kunye nomngxuma ophakathi, kwaye ubhedu okanye i-aluminium isetyenziswa njengesixhobo sevalve ukwenza umphezulu wevalve ube lula, ukuze ukunciphisa ukuxhathisa kunye nokuphucula ubushushu.ukusebenza kakuhle kwesixhobo.
Ukulungiswa kwesekethe equkuqelayo yesiphakathi sokupholisa
Imeko efanelekileyo yokusebenza kwe-thermal ye-injini yokutsha yangaphakathi kukuba ubushushu bentloko ye-cylinder buphantsi kwaye ubushushu bebhloko ye-cylinder buphezulu.Ngenxa yesi sizathu, inkqubo yokupholisa i-split-flow iai ibonakala, kwaye isakhiwo kunye nokufakwa kwendawo ye-thermostat kudlala indima ebalulekileyo kuyo.Isakhiwo sokufakela umsebenzi odibeneyo we-thermostats, i-thermostats ezimbini zifakwe kwi-bracket efanayo, inzwa yokushisa ifakwe kwi-thermostat yesibini, i-1/3 ye-coolant flowing isetyenziselwa ukupholisa ibhloko yesilinda, i-2/3 yokupholisa. flow isetyenziselwa ukupholisa intloko yesilinda.
