【摘 要】
：
The NOx of motor vehicle exhaust is toxic gas,therefore the NOx content of motor vehicle exhaust have clear limits required in many countries.Emission control,pollution reduction are becoming an impor
【机 构】
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School of Energy & Power Engineering (SEPE),USST,ShangHai,200093,China
【出 处】
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The 6th International Conference on Separation and Technolog
论文部分内容阅读
The NOx of motor vehicle exhaust is toxic gas,therefore the NOx content of motor vehicle exhaust have clear limits required in many countries.Emission control,pollution reduction are becoming an important direction of automotive technological development.The cooled exhaust gas recirculation system (CEGR) undermine the formation of NOx conditions,which is high-temperature oxygen-rich,by pull a small quantity of exhaust from internal combustion engine in cylinder to reduce the peak combustion speed and the combustion temperature,to reduce the concentration of O2 gas mixture.The CEGR system is one kind of most effective technologies to reduce the NOx in the exhaust,and just in the stage of constant adjustment and improvement.The article has introduced the NOx formed in the engine and the automotive exhaust technology,and the working principle of the NOx reduction by the CEGR system.The article has pointed at that the CEGR system,although with the problems recently,is the direction of research and development in the future.
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