Ko te rangahau mō te tukatuka i muri i te hau o te mīhini tīhiera e aro ana ki te whakakore i te NOX me te PM. Ā, he maha ngā mahi purenga kua puta. Ko te hangarau purenga hau tīhiera ko te nuinga o te wā ko te whakahokinga hau hau (EGR), te kaitahuri whakakorikori hauhautanga (DOC), te tātari matūriki tīhiera (DPF), te pūnaha whakaiti whakakorikori whiriwhiri (SCR), me te mahanga mawhiti haukini (ASC).
1.EGR (Te Whakahokinga Hau Puta)Ko te pūnaha tukunga hau putanga, e wehewehe ana i tētahi wāhanga o te hau putanga mai i te miihini tahunga ka whakaurua ki te taha whakauru mō te tahunga anō, ka taea te whakatutuki i te pānga o te pehi i te hanga o ngā waikura hauota me te whakapai ake i te penapena wahie.
2.DOC (Kaitahuri Whakahāora Tīhiera)He hangarau whakakōkī waikura tīhiera te hangarau whakakōkī waikura e whakamahi ana i ngā whakakōkī kei roto ngā konganuku utu nui hei whakakōkī anō i te HC, CO, NO, me ngā utu hurihuri i runga i ngā mata matūriki i roto i te hau hau o te miihini, ā, mā reira ka whakaitihia te nui o te HC, CO, me te PM.
3.DPF (Tātari Matūriki Tīhiera)he momo tātari e tāutahia ana ki roto i te pūnaha putanga hau o ngā miihini tīhiera, e whakamahia ana hei hopu i ngā matūriki (PM) i roto i te putanga hau.
4.SCR (Whakaiti Whakakorikori Whiriwhiri)He pūnaha hangarau tēnei e whakamahi ana i te urea hei whakaiti i ngā waikura hauota (ngā hau paitini) i roto i te hau putanga hei hauota me te wai (kāore e kino).
5.ASC (Whakaoho Paheke Haukini)Hei whakakōkī mawhiti haukini, ka whai pūnaha ASC ētahi taraka whai muri i te maimoatanga National VI, kua tāutahia ki te pito o muri o te SCR, ā, ka whakaiti i te turuturu o te haukini (NH3) i roto i te putanga haukini o te pito o muri o te SCR mā te waikura whakakōkī.
6.POCHe matūriki whakakorikori matūriki tēnei. Ko te kaupapa mahi he kohi i ngā matūriki ka tahuna mā te pāmahana teitei o te hau putanga (250 ℃ -500 ℃) hei whakatutuki i te whāinga o te whakaiti i ngā matūriki. He mea noa te whakamahi i te POC i runga i ngā taraka mama. Hei tāpiri, ka taea te hanga anō i te POC, engari me whakamahi ā-ringa te DPF.
Te wā tuku: Hurae-31-2024