Kev txhim kho hauv kev ua haujlwm ntawm cov tshuab hluav taws xob sab hauv tau ua rau txo qis cov pa roj cua kub. Kev nruj nruj ntawm cov pa emission txwv yuav tsum tau ua ntau txoj kev tswj emission tswj, suav nrogtom qab kev kho mobuas nws efficiency yog qhov tseem ceeb nyob ntawm cov pa cua kub.
Ob chav phab ntsa tso pa manifold thiabturbine vajmodules ua los ntawm cov ntawv hlau tau siv rau hauv cov roj av cav txij li xyoo 2009. Lawv muab lub peev xwm nyob rau hauv niaj hnub Diesel xyaw kom txo tau ob qho tib si emissions ntawm cov pa phem thiab roj noj. Lawv kuj muaj qhov zoo ntawm cov khoom hnyav thiab qhov kub thiab txias hauv qhov sib piv rau cov khoom cam khwb cia hlau.Cov txiaj ntsig tau qhia tias kev siv cov pa cua-gap insulated tso pa tawm tuaj yeem ua rau txo qis HC, CO, thiab NOx emissions ntawm tailpipe hauv ntau yam ntawm 20 mus rau 50%, nyob ntawm seb lub cav tsim, lub tsheb inertia chav kawm, thiab lub voj voog tsav tsheb, thaum piv rau lub hauv paus pa system haum nrog ib tug pa cam khwb cia hlau tso manifold thiab turbine vaj tse.
Nrog rau kev siv cov tswv yim zoo EGR, kev nce hauv lub cav tawm NOx qib tuaj yeem tso cai los ntawm kev ua kom zoo dua NOx hloov dua siab tshiab hauv SDPF. Raws li qhov tshwm sim, tag nrho cov roj txuag tau txog li 2% tau pom nyob rau hauv WLTP thiab Kev txhim kho thev naus laus zis ntxiv hauv cov tshuab hluav taws xob yog tsim nyog los ua kom tiav cov kev cai lij choj ntawm cov pa hluav taws xob ntau ntxiv thiab txo qis hauv CO2 emissions ib txhij. Hauv EU thiab qee lub tebchaws, kev txhim kho hauv cov txheej txheem kev tswj hwm, xws li Ntiaj Teb Kev Sib Haum Xeeb Lub Teeb Hluav Taws Xob Kev Ntsuas Cov Txheej Txheem (WLTP) thiab kev txwv kev tsav tsheb tiag tiag (RDE), yuav luag qee yam yuav tsum tau qhia. Kev taw qhia txog cov txheej txheem nruj no yuav xav tau kev txhim kho ntxiv hauv kev ua tau zoo. Ntxiv nrog rau DOC thiab diesel particulate filter (DPF), lub cav yav tom ntej yuav tau nruab nrog NOx tom qab kev kho cov cuab yeej xws li NOx cia catalyst lossis xaiv cov catalytic txo qhov system.
Kev siv
Bhardwaj O. P, Lüers B, Holderbaum B, Kolbeck A, Köfer T (ed.), "Innovative, Combined Systems with SCR for Upcoming Stringent Emission Standards in US & EU," 13th International Stuttgart Symposium on Automobile and Engine Technology, Stuttgart , xyoo 2013.
Post lub sij hawm: May-23-2022