欧ⅳ 排放技术对比（Europe IV emission technology comparison）.docVIP

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欧ⅳ 排放技术对比（Europe IV emission technology comparison）.doc

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欧ⅳ 排放技术对比（Europe IV emission technology comparison）

欧ⅳ 排放技术对比（Europe IV emission technology comparison） The Euro IV and after heavy duty diesel engine emission control technology compared to 2011-05-09 Author: Xin wood source: automobile and parts - commercial vehicle and engine text size: [great] [in] [small] in order to meet Euro IV to Euro VI emission regulations, heavy commercial vehicles and diesel in Europe is the main machine the two emission control technology routes: one is the optimization of combustion +SCR (selective catalytic reduction) technology route, SCR route; the EGR+DOC/DPF/POC (exhaust gas recirculation + diesel oxidation catalyst / diesel particulate filter / particulate oxidation catalyst) technology route, among which the most widely used EGR+DPF, referred to as EGR+ route. Key words: Euro IV SCR EGR in order to meet Euro IV to Euro VI emission regulations, heavy commercial vehicles and diesel in Europe is the main machine of two emission control techniques: one is the optimization of combustion +SCR (selective catalytic reduction) technology route, SCR route, it is through the optimization of fuel injection and combustion process. Try to control the PM particles in the machine production, and in the machine outside the postprocessing process, using urea solution to carry out selective catalytic reduction of nitrogen oxides NOx, this technology mainstream in Europe, the European long-distance truck almost all using this program, the relevant production enterprises are mainly Mark, Cummins, Detroit diesel engine, Daimler, Volvo, Chrysler Duff and Yi Weike; the other is EGR+DOC/DPF/POC (exhaust gas recirculation + diesel oxidation catalyst / diesel particulate filter / A The particle oxidation catalyst) technology route, among which the most widely used EGR+DPF , referred to as the EGR+ route, which is based on the exhaust gas recirculation, the inhibition of NOx in the machine production of diesel oxidation catalytic converter, or a diesel particulate filter used in machine postprocessing proce