1. Cov Cuab Yeej Siv Hluav Taws Xob Recirculation (EGR) system txo cov pa nitrogen oxide (NOx) emissions los ntawm cov pa tawm. Cov tshuaj tiv thaiv tsuas yog tshwm sim nyob rau hauv qhov kub thiab txias txias, ua kom lub cav combustion chamber kub thiab siab ua tau raws li cov kev cai no, tshwj xeeb tshaj yog thaum lub sij hawm quab yuam acceleration.
2. Thaum lub cav nyob rau hauv load, EGR valve qhib, tso cai rau ib tug me me ntawm cov pa pa nkag mus rau hauv lub intake manifold thiab sib tov nrog cov combustible sib tov ua ntej nkag mus rau hauv lub combustion chamber. Thaum EGR valve kaw, lub cav tsis ua haujlwm, thiab yuav luag tsis muaj cov pa roj rov qab mus rau lub cav.
3. Automotive pa gases tsis yog -flammable (tsis muaj roj los yog oxidizer) thiab tsis koom nyob rau hauv combustion nyob rau hauv lub combustion chamber. Lawv txo combustion kub thiab siab los ntawm absorbing ib co ntawm cov tshav kub generated thaum lub sij hawm combustion, yog li txo tus nqi ntawm NOx tsim. Raws li cav ceev thiab load nce, tus nqi ntawm exhau
