Ukuphuculwa kokusebenza kakuhle kweenjini zokutsha zangaphakathi kuye kwakhokelela ekunciphiseni ubushushu begesi yokukhupha.Ukuqiniswa kwangaxeshanye kwemida yokukhupha umbhobho kufuna iindlela ezintsonkothileyo zolawulo lokukhupha, kuqukaemva konyangoukusebenza kwawo kuxhomekeke kakhulu kubushushu berhasi yokukhupha.
Ukukhupha okuphindwe kabini kunyeizindlu zeinjini yomoyaiimodyuli ezenziwe kwi-sheet metal ziye zasetyenziswa kwiinjini zepetroli ukususela ngo-2009. Banikezela ngekhono kwiinjini ze-Diesel zanamhlanje ukunciphisa zombini ukukhutshwa kwezinto ezingcolileyo kunye nokusetyenziswa kwamafutha.Kwakhona banikezela ngeenzuzo ngokubhekiselele kubunzima becandelo kunye namaqondo okushisa aphezulu xa kuthelekiswa namacandelo ensimbi.Iziphumo zibonisa ukuba ukusetyenziswa kweendlela zokukhupha i-air-gap insulated exhaust systems zingakhokelela ekunciphiseni i-HC, CO, kunye nokukhutshwa kwe-NOx kwi-tailpipe. Uluhlu lwe-20 ukuya kwi-50%, ngokuxhomekeke kuyilo lwenjini, udidi lwe-inetia yesithuthi, kunye nomjikelo wokuqhuba, xa kuthelekiswa nesiseko senkqubo yokukhupha efakelwe intsimbi eqhelekileyo yokukhupha intsimbi kunye nezindlu ze turbine.
Ngokusetyenziswa kwezicwangciso ze-EGR eziphuculweyo, ukunyuka kwe-injini ngaphandle kwamanqanaba e-NOx kunokuvunyelwa ngokuthatha inzuzo yezinga eliphezulu lokuguqulwa kwe-NOx kwi-SDPF.Ngenxa yoko, ukongiwa kwamafutha okuya kuthi ga kwi-2% kubonwe kwi-WLTP kunye nolunye uphuculo lobuchwepheshe kwiinjini zedizili luyimfuneko ukuze kuzalisekiswe umthetho ongqongqo werhasi yokuphuma kunye nokunciphisa ngaxeshanye kokukhutshwa kweCO2.Kwi-EU nakwamanye amazwe, ukuphuculwa kweenkqubo ezigunyazisiweyo, ezifana neWorldwide harmonised Light vehicles Test Procedure (WLTP) kunye ne-real driving emissions (RDE) limits, phantse ngokuqinisekileyo ziya kuqaliswa.Ukuqaliswa kwezi nkqubo zingqongqo kuya kufuna uphuculo olongezelelweyo ekusebenzeni kwenkqubo.Ukongeza kwi-DOC kunye ne-diesel particulate filter (DPF), iinjini ezizayo ziya kuxhotyiswa nge-NOx emva kwesixhobo sonyango njenge-NOx yokugcina i-catalyst okanye inkqubo yokunciphisa i-catalytic ekhethiweyo.
Isalathiso
UBhardwaj O. P, Lüers B, Holderbaum B, Kolbeck A, Köfer T (ed.), "IiNkqubo eziNtsha, eziDityanisiweyo kunye ne-SCR yeMigangatho eMiselweyo eMiselweyo ezayo kwi-US & EU," i-13th International Stuttgart Symposium kwi-Automobile kunye ne-Engine Technology, eStuttgart. , 2013.
Ixesha lokuposa: May-23-2022