Ukubuyiselwa kwevalvu ye-EGR Ngaba kuyimfuneko ukuyitshintsha?
Umsebenzi wevalvu ye-EGR kunye nefuthe lomonakalo.
Ivalvu ye-EGR (ivalvu yokubuyisela igesi ephumayo) yinxalenye ebalulekileyo yokulawula injini yeemoto, efakelwe kwinjini ukulawula ubungakanani bokubuyisela igesi ephumayo kwinkqubo yokungenisa. Xa ivalvu ye-EGR yonakele, iya kukhokelela kwiingxaki ezifana nesantya esingazinziyo sokungaqhubeki, ukukhawulezisa okungekho semgangathweni, ukusetyenziswa kwepetroli okwandisiweyo, kunye namandla angonelanga. Isizathu sokurhoxiswa kwegesi kudla ngokuba ngenxa yokuba izinto zangaphakathi zevalvu ye-EGR zingcoliswa kukwanda kwe-chlorine kwipetroli, nto leyo ebangela ukusebenza kakubi komzimba wevalvu, nto leyo enokubangela ukungasebenzi kakuhle kwenjini, kwaye kwiimeko ezigqithisileyo, imoto inokuma ngesantya esiphantsi, nto leyo eyonyusa umngcipheko wokungqubana.
Izizathu kunye nemfuneko yokukhumbula
Isizathu sokurhoxiswa kwemoto ngokuqhelekileyo kukuba izinto zangaphakathi zevalvu ye-EGR zidla ngokuba zingcoliswe kukuxinana okuphezulu kwe-chlorine kwipetroli, nto leyo ebangela ukusebenza kakubi komzimba wevalvu, nto leyo enokubangela ukungasebenzi kakuhle kwenjini, kwaye kwiimeko ezigqithisileyo, imoto inokuma ngesantya esiphantsi, nto leyo eyonyusa umngcipheko wokungqubana. Ke ngoko, ukutshintshwa kwevalvu ye-EGR ngexesha elifanelekileyo yindlela ebalulekileyo yokuqinisekisa ukusebenza okuqhelekileyo kwenjini kunye nokhuseleko lokuqhuba.
Iingenelo kunye neengxaki zokutshintsha ivalvu ye-EGR
Ukutshintsha ivalvu ye-EGR kunokuqinisekisa ukusebenza kwenjini okuqhelekileyo, kuthintele iingxaki ezinje ngesantya esingazinzanga sokungaqhubi kakuhle kunye nokukhawulezisa okungekho semgangathweni, kwaye kunciphise ukusetyenziswa kwepetroli kunye namandla angonelanga. Nangona kunjalo, ukutshintsha ivalvu ye-EGR kufuna iindleko ezithile kunye nexesha, kwaye kunokuba yimfuneko ukuba imoto ibisoloko isetyenziswa ixesha elide okanye inemayile engaphezulu; Nangona kunjalo, ukuba imoto isetyenziswa ixesha elifutshane okanye inemayile encinci, ungacinga ngokuqhubeka nokusebenzisa iindawo zokuqala ukuze uzigcine.
Yintoni ivalvu ye-egr?
Ivalvu yokujikeleza kwegesi ephumayo
Ivalvu ye-EGR yivalvu yokujikeleza igesi ephumayo. Yimveliso yokudibanisa i-electromechanical efakwe kwinjini yedizili ukulawula ubungakanani bokujikeleza igesi ephumayo ebuyela kwinkqubo yokungenisa, kwaye yinxalenye ebaluleke kakhulu nebalulekileyo kwisixhobo sokujikeleza igesi ephumayo.
Umsebenzi ophambili wevalvu ye-EGR kukulawula ubungakanani begesi yokukhupha umoya engena kwi-intake manifold, ukuze ubungakanani obuthile begesi yokukhupha umoya bungene kwi-intake manifold ukuze ijikeleziswe. Ihlala ikwicala lasekunene le-intake manifold, kufutshane nomzimba we-throttle, kwaye imisela ubungakanani begesi yokukhupha umoya edluliselwa kwi-intake manifold ngomgangatho wokuvulwa kwevalvu elawulwa yityhubhu ye-vacuum. Ngokuyalela igesi yokukhupha umoya ukusuka ekutshisweni kwenjini ukuya kwi-intake manifold ukuze ithathe inxaxheba ekutshisweni, ivalvu ye-EGR inokunciphisa ubushushu begumbi lokutsha, iphucule ukusebenza kakuhle kwenjini, iphucule imeko yokutsha, kwaye inciphise umthwalo wenjini. Kwangaxeshanye, inokunciphisa ngempumelelo ukukhutshwa kweekhompawundi ze-carbon monoxide, inciphise ukungqongqoza, kwaye yandise ubomi benkonzo yecandelo ngalinye.
Ukongeza, iivalvu ze-EGR zahlulwe zibe ziintlobo ezimbini zolawulo loomatshini kunye nolwe-elektroniki ukuze zivumelane neemfuno zeenjini ezahlukeneyo. Kwinjini yanamhlanje elawulwa nge-elektroniki, ukuze kulawulwe ngokuchanekileyo ubungakanani bokujikeleza kwegesi ephumayo, kusetyenziswa icebo lokulawula i-closed-loop, kwaye isenzi sesigaba sibekwe kwivalvu ye-EGR ukuze siqonde imeko yokusebenza kwenjini ngexesha langempela, kwaye ngokwale ngcaciso, ivalvu ye-EGR ilungiswa ukuze ivuleke kwaye ivalwe, ukuze kufezekiswe ulawulo oluchanekileyo lobungakanani bokujikeleza kwegesi ephumayo.
Ivalvu yemoto egr yaphukile, yintoni uphawu enalo?
Ziziphi iimpawu ezicacileyo onokuzibona xa ivalvu ye-EGR yemoto yakho ingaphumeleli?
Ivalvu ye-EGR, ivalvu yenkqubo yokujikeleza igesi ephumayo, xa ingasebenzi kakuhle, imoto iya kuvela uthotho lwemiqondiso yesilumkiso. Okokuqala, ukungazinzi okungenamsebenzi okanye ukutsha yimeko eqhelekileyo, kwaye isibane sempazamo sinokukhanya rhoqo ukukukhumbuza ukuba unikele ingqalelo kwimeko yenjini. Okwesibini, ngenxa yokuba ukungaphumeleli kwevalvu ye-EGR kunokukhokelela ekukhutshweni komoya okungaphantsi komgangatho, imoto inokujongana neentloni zokungaphumeleli ukuphumelela kuhlolo lonyaka.
Ukuba ivalvu ye-EGR igcinwa ivuliwe, iziphumo zibaluleke ngakumbi: imoto iya kubonisa umsi omnyama kunye nokungabikho kokukhawulezisa, ngelixa ukusebenza kakuhle kwepetroli kuncipha kwaye ukusetyenziswa kwepetroli kuyanda. Ngokwahlukileyo koko, ukuba ivalvu ye-EGR ivaliwe, ukukhutshwa komoya ophumayo kuya kuchaphazeleka kwaye kunokukhokelela ngokuthe ngqo ekungaphumelelini ukuphumelela imigangatho yokuhlolwa kovavanyo lonyaka.
Ngokuphathelele izizathu zomonakalo wevalvu ye-EGR, kukho iinkalo ezininzi: iingxaki zomgangatho wenkqubo yokujikeleza kwakhona kwegesi emdaka, ukugcinwa okungafanelekanga, umgangatho weoyile ophantsi kunye nokuguga kwevalvu ngokwayo. Umzekelo, ukusetyenziswa kwepetroli ecocekileyo okanye ukongezwa okungafanelekanga kweoyile yepetroli kunokuba yinto ebangela ukungaphumeleli kwevalvu ye-EGR. Iivalvu ze-EGR zisebenza kumaqondo obushushu aphezulu enjini, kwaye ekuhambeni kwexesha, njengee-valve chamber cover pads kunye neeringi zerabha, ziya kuguga ngenxa yokuguga.
Lilonke, impilo yevalvu ye-EGR ibalulekile ukugcina ukusebenza kwenjini kunye nokukhutshwa komoya ongcolileyo, xa ezi mpawu zingasentla zifunyenwe, kufuneka kufunwe ulondolozo lobuchwephesha ngokukhawuleza ukuqinisekisa ukuba iimfuno zokhuseleko lokuqhuba kunye nokusingqongileyo ziyafezekiswa.
Ukuba ufuna ukwazi okungakumbi, qhubeka ufunda amanye amanqaku kule sayithi!
Nceda usitsalele umnxeba ukuba ufuna iimveliso ezinjalo.
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