I-valve ye-EGR (i-exhaust gas recirculation valve) iwumkhiqizo we-mechatronic ofakwe enjinini kadizili ukuze ulawule inani legesi ephumayo ekhishwa kabusha ebuyiselwa ohlelweni lokuyithatha.
I-valve ye-EGR iwumkhiqizo we-mechatronic ofakwe enjinini kadizili ukuze ulawule inani legesi ekhishwayo ephumayo ebuyiselwa ohlelweni lokuyithatha. Imvamisa itholakala ngakwesokudla kwe-manifold edonsayo, eduze nomzimba we-throttle, futhi ixhunywe kuyo ngeshubhu lensimbi elifushane eliholela ekuphumeni okuningi. Umsebenzi wayo ukulawula inani legesi ephumayo engena endaweni eningi yokukhipha, ukuze inani elithile legesi ephumayo ligeleze lingene endaweni eningi ukuze liphinde lijikelezwe. I-valve ye-EGR iyingxenye ebaluleke kakhulu futhi ebucayi kudivayisi yokukhipha kabusha igesi.
I-valve ye-EGR ihlukaniswe yaba izinhlobo ezimbili: uhlobo lwemishini kanye nohlobo lokulawula ngogesi.
I-valve ye-EGR yehlisa izinga lokushisa legumbi elivuthayo ngokuqondisa igesi yokukhipha umoya ephuma ekushisweni kwenjini iye endaweni eningi ukuze ibambe iqhaza ekushiseni, ithuthukise ukusebenza kahle kwenjini, ithuthukise indawo evuthayo, futhi yehlise umthwalo injini, inciphisa ngempumelelo ukukhishwa kwe-NO compounds, ukunciphisa ukugoqa, nokwandisa isikhathi sengxenye ngayinye. impilo yesevisi.
Igama eligcwele i-Exhaust Gas Recirculation, okungukuthi, i-exhaust gas recirculation [1] Uhlelo lusetshenziselwa ukunciphisa ukukhishwa kwe-nitrogen oxides (NOX) ku-exhaust gesi. I-nitrogen ne-oksijini isabela ngamakhemikhali kuphela ngaphansi kwezimo eziphakeme zokushisa nezimo ezicindezelayo, futhi izinga lokushisa nokucindezela ekamelweni elivuthayo lenjini kuhlangabezana nalezi zimo, ikakhulukazi ngesikhathi sokusheshisa okuphoqelekile. Lapho injini isebenza ngaphansi komthwalo, i-valve ye-EGR iyavuleka, ivumele igesi encane yokukhipha umoya ukuthi ingene endaweni eningi ewuthathayo kanye nasegunjini elivuthayo kanye nengxube evuthayo. I-valve ye-EGR ivalwa lapho ingenzi lutho, futhi igesi encane yokukhipha umoya iphinde ihanjiswe enjinini. I-automobile exhaust gas iyigesi engashi (ngaphandle kukaphethiloli kanye ne-oxidant) engahlanganyeli ekushiseni kwegumbi lomlilo. Yehlisa izinga lokushisa lomlilo kanye nokucindezela ngokumunca ingxenye yokushisa okukhiqizwa ukuvutha ukuze kuncishiswe ukukhiqizwa kwama-nitrogen oxide. Inani legesi yokukhipha igesi engena egumbini lomlilo liyakhula ngesivinini senjini nomthwalo
I-exhaust gas recirculation kuyindlela lapho ingxenye yegesi yokukhipha umoya ingeniswa khona emoyeni omusha (noma ingxube) ehogelwe ngesikhathi sokusebenza kwenjini, bese ibuyiselwa kusilinda ukuze iphinde ijikelezwe ukuze ibambe iqhaza ekushiseni. Umsebenzi wayo ukunciphisa ukukhishwa kwe-NOx. I-NOx iyigesi eyingozi kakhulu emzimbeni womuntu, ekhiqizwa kakhulu ngaphansi kwezinga lokushisa eliphezulu nezimo ezinomoya-mpilo. Phakathi nenqubo yokusebenza kwenjini, uma ingxenye yegesi yokukhipha umoya iphinde ifakwe kusilinda ngesikhathi esifanele nangendlela efanele, ngoba ingxenye eyinhloko yegesi ephumayo inomthamo wokushisa othize omkhulu kuqhathaniswa, CO2, igesi yokukhipha ingakwazi ukumunca ingxenye. wokushisa okukhiqizwa ukushiswa nokuwukhipha ku-cylinder, futhi kunomthelela omuhle engxubeni. Umphumela othile wokuhlanjululwa, ngaleyo ndlela unciphisa izinga lokushisa eliphezulu nokuqukethwe kwe-oksijini yokushiswa kwenjini, ngaleyo ndlela kuncishiswe ukwakheka kwezinhlanganisela ze-NOx.
Kodwa-ke, ukuphindaphinda kwegesi ephumayo ngokweqile kuzothinta ukusebenza okuvamile kwenjini, ikakhulukazi uma injini isebenza ngesivinini esingenzi lutho, isivinini esiphansi nomthwalo ophansi futhi injini isebenza endaweni ebandayo, nalapho amandla enjini edingeka ngomthwalo ogcwele. (i-throttle egcwele), i-recirculation Exhaust gas izoba nomthelela omkhulu ekusebenzeni kwenjini. Ngakho-ke, inani legesi ephumayo elibamba iqhaza ekusetshenzisweni kabusha kufanele lilungiswe ngokuzenzakalelayo ngokuya ngezimo zangempela zokusebenza zenjini kanye nezinguquko ezimweni zokusebenza. Ukuzijwayeza kufakazele ukuthi, ngokwezinhlaka ezihlukene zezinjini, inani legesi ephumayo elibandakanyekayo ekujikelezweni kabusha lihluka phakathi kuka-6% no-13%.
Ukuze kwenziwe inani lokujikeleza kabusha kwegesi yokukhipha umoya kungabi nomthelela omkhulu ekusebenzeni kwenjini, izinjini zesimanje ezilawulwa nge-elekthronikhi nazo zisebenzisa isu lokulawula iluphu elivaliwe lokujikeleza kabusha kwegesi yokukhipha umoya, futhi inzwa ye-valve ye-EGR ifakwa lapho kuphuma kabusha igesi. i-valve (amanye amamodeli asebenzisa izinzwa zokushisa kwegesi ephumayo). noma inzwa yokucindezela), ukulawulwa kwempendulo yokulungiswa kweluphu evaliwe yenani langempela lokuzungeza igesi ephumayo iyenziwa.Indawo yokuhamba yebhizinisi. Ubude bephansi ukusuka phansi buphansi, futhi izinga lokusebenzisa indawo yangaphakathi liphakeme kakhulu phakathi kwemikhiqizo efanayo, ephakeme ngo-19% kunemikhiqizo efanayo; isikhala esikhulu
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Amandla amakhulu
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Ukushuna kwe-chassis okuqinile, okusezingeni eliphezulu kwe-MIRA kunikeza umuzwa wokushayela ofana nowemoto yomgibeli. Ubuchwepheshe bokumiswa komoya bungathuthukisa kakhulu ikhono lokuhlukanisa ukudlidliza komgwaqo, futhi buthuthukise ngokugcwele umkhawulo wokulawula nokunethezeka [19]
Ithembekile futhi ihlala isikhathi eside
Ishidi lensimbi eliyisipesheli elinamacala amabili, upende we-EPP ongancibiliki emanzini, izinqubo ezine zokwelashwa kopende we-phosphating, i-electrophoresis, i-middle coat kanye ne-topcoat ukuqinisekisa ukuthi ngeke ugle iminyaka engu-10. (Izinga likazwelonke lidinga iminyaka engu-7)
【Ukuphepha Okuphelele】: Umzimba othwele umthwalo onesakhiwo esihlanganisiwe, sohlaka lwekheji
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