Ngexesha lokusebenza kwe-injini, ukukhupha kwayo okuninzi kutshisa ukuya kuthi ga kwiidigri ezingamakhulu, nto leyo eyingozi kwindawo exineneyo ye-injini.Ukucombulula le ngxaki, iimoto ezininzi zisebenzisa i-exhaust isikhuseli sobushushu - konke malunga nale nkcukacha kuchazwe kweli nqaku.
Injongo yesikrini sokukhupha izinto ezininzi
Njengoko uyazi, ii-injini zokutsha zangaphakathi zisebenzisa amandla akhululwe ngexesha lokutsha komxube we-fuel-air.Lo mxube, kuxhomekeke kuhlobo lweenjini kunye neendlela zokusebenza, unokutshisa kumaqondo okushisa ukuya kwi-1000-1100 ° C. Iigesi ezibangelwayo ezibangelwayo nazo zineqondo lokushisa eliphezulu, kwaye xa zidlula kwi-manifold yokukhupha, zityhila ukushisa okukhulu.Iqondo lobushushu le-exhaust manifold yeenjini ezahlukeneyo zinokusuka kwi-250 ukuya kwi-800 ° C!Yingakho i-manifolds yenziwe ngamabakala akhethekileyo ensimbi, kwaye ukuyila kwabo kunika ukuchasana okuphezulu kubushushu.
Nangona kunjalo, ukufudumeza i-manifold yokukhupha akuyingozi kuphela ngokwayo, kodwa nakwiindawo ezikufutshane.Emva kwakho konke, i-manifold ayikho kwi-void, kodwa kwi-injini ye-injini, apho kukho iinqununu ezininzi ze-injini, iintambo, izinto zombane kunye neentambo, kwaye ekugqibeleni, iinxalenye zomzimba wemoto.Ngoyilo olungaphumelelanga okanye kumagumbi e-injini axineneyo, ukufudumeza okugqithisileyo kokukhupha okuninzi kunokukhokelela ekunyibilikeni kwe-insulation ye-wiring, ukuguqulwa kwetanki zeplastiki kunye nokujikeleza kwamalungu omzimba anodonga oluncinci, ukusilela kwezinye izinzwa, kwaye kwiimeko ezinzima ngakumbi, kuse emlilweni.
Ukusombulula zonke ezi ngxaki, iimoto ezininzi zisebenzisa inxalenye ekhethekileyo - ukukhupha isikhuseli sobushushu.Isikrini sixhonywe ngaphezulu kwe-manifold (kuba ngokuqhelekileyo akukho zixhobo phantsi kwe-manifold, ngaphandle kweentonga zeqhina okanye isizinzi), ilibazisa imitha ye-infrared kwaye yenza kube nzima ukuhanjiswa komoya.Ngaloo ndlela, ukuqaliswa koyilo olulula kunye nenxalenye engabizi kunceda ukuphepha iingxaki ezininzi, ukukhusela amacandelo e-injini ekuqhekekeni, kunye nemoto emlilweni.
Iindidi kunye noyilo lokukhupha izikhuselo zobushushu ezininzi
Okwangoku, zimbini iindidi eziphambili zokukhupha izikrini ezininzi:
- Izikrini zensimbi ngaphandle kwe-thermal insulation;
- Izikrini ezinomaleko omnye okanye ngaphezulu kwe-thermal insulation.
Izikrini zohlobo lokuqala zinamashiti ensimbi afakwe isitampu semilo enzima egubungela i-manifold exhaust.Isikrini kufuneka sibe nezibiyeli, imingxuma okanye izibonda zamehlo ukuze zifakwe kwi-injini.Ukonyusa ukuthembeka kunye nokuchasana ne-deformation xa kushushu, i-stiffeners isitampu kwisikrini.Kwakhona, izimbobo zokungenisa umoya zingenziwa kwisikrini, eziqinisekisa imowudi ye-thermal eqhelekileyo yokusebenza komqokeleli, ngelixa ukhusela ukufudumeza okugqithisileyo kweendawo ezijikelezileyo.
Izikrini zodidi lwesibini nazo zinesiseko sesitampu sentsimbi, esongezelelweyo sigqunywe ngoluhlu olunye okanye ngaphezulu kwe-high-temperature resistant thermal insulation.Ngokuqhelekileyo, amashiti abhityileyo ezinto ze-mineral fibre ezigqunywe ngephepha lentsimbi (ifoyile) ebonisa imitha ye-infrared isetyenziswa njenge-thermal insulation.
Zonke izikrini zenziwe ngendlela yokulandela imilo ye-exhaust manifold okanye ukuvala indawo yayo ephezulu.Ezona zikrini zilula liphepha lentsimbi eliphantse libe caba eligqume umqokeleli osuka phezulu.Izikrini ezinzima ngakumbi ziphinda iimilo kunye neekhonto zomqokeleli, ezigcina indawo kwindawo ye-injini ngelixa iphucula iimpawu zokukhusela ukushisa.
Ukufakwa kwezikrini kuqhutyelwa ngokuthe ngqo kwi-manifold (ininzi rhoqo) okanye ibhloko ye-injini (incinci kaninzi), iibholiti ezi-2-4 zisetyenziselwa ukufakela.Ngolu fakelo, isikrini asidibanisi nezinye iindawo ze-injini kunye ne-injini ye-injini, eyandisa iqondo lokukhusela kwayo kwaye ihlangabezana neemfuno zokhuseleko lomlilo.
Ngokubanzi, izikrini ezininzi zokukhupha zilula kakhulu kuyilo kwaye zithembekile, ngoko zifuna ingqalelo encinci.
Imiba yogcino kunye nokutshintshwa kwezikrini ezininzi zokukhupha
Ngexesha lokusebenza kwemoto, ukukhupha isikrini esininzi sixhomekeke kwimithwalo ephezulu ye-thermal, ekhokelela ekunxibeni kwayo okunzulu.Ngoko ke, isikrini kufuneka sihlolwe ngamaxesha athile ukuthembeka kwayo - kufuneka ingabikho ekutshiseni kunye neminye umonakalo, kunye nokugqwala okukhulu.Ingqwalasela ekhethekileyo kufuneka ihlawulwe kwiindawo apho isikrini sifakwe khona, ngakumbi ukuba izibiyeli.Inyani kukuba ngamanqaku oqhagamshelwano nomqokeleli aphantsi kobushushu obukhulu, kwaye ngoko ke awona mngcipheko womonakalo.
Ukuba kukho nawuphi na umonakalo okanye ukutshatyalaliswa kufunyenwe, isikrini kufuneka sitshintshwe.Esi sincomo sisebenza ngokukodwa kwiimoto apho i-screen exhaust manifold ifakwe ngokuqhelekileyo (ukusuka kwifektri).Ukutshintshwa kwenxalenye kwenziwa kuphela kwi-injini ebandayo, ukwenza umsebenzi, kwanele ukukhulula iibholithi ezibambe isikrini, susa inxalenye endala kwaye ufake enye entsha.Ngenxa yokuvezwa rhoqo kumaqondo obushushu aphezulu, iibholiti "zincamathele", ngoko kuyacetyiswa ukuba ziphathwe ngeendlela ezithile eziququzelela ukuphuma.Kwaye emva koko, kuyimfuneko ukucoca yonke imingxuma efakwe kwi-corrosion kunye nokungcola.Akukho mfuneko yokuba wenze enye into.
Ukuba imoto yayingenaso isikrini, ukubuyisela kwakhona kufuneka kwenziwe ngononophelo.Okokuqala, kufuneka ukhethe isikrini esifanelekileyo kuyilo, imilo, ubungakanani kunye noqwalaselo.Okwesibini, xa unyuswa isikrini, akufuneki kubekho ucingo, itanki, abenzi boluvo kunye nezinye izinto ezisecaleni kwayo.Kwaye okwesithathu, isikrini kufuneka sixhonywe ngokuthembeka okuphezulu, ukuthintela ukungcangcazela kunye nokunyakaza kwayo ngexesha lokusebenza kwemoto.
Ekugqibeleni, akukhuthazwa ukuba upende isikrini somqokeleli (nangona ngoncedo lweepeyinti ezikhethekileyo ezichasene nokushisa), sebenzisa i-thermal insulation kuyo kwaye utshintshe uyilo.Ukupeyinta kunye nokutshintsha uyilo lwesikrini kunciphisa ukhuseleko lomlilo kwaye kwandisa ubushushu kwindawo ye-injini.
Ngokufakela okufanelekileyo kunye nokutshintshwa kwesikrini sokukhupha isikrini, iqondo lokushisa elikhululekile liya kugcinwa kwindawo ye-injini, kwaye imoto iya kukhuselwa emlilweni.
Ixesha lokuposa: Aug-27-2023