车用尾气催化净化技术综述

内燃机经过多年的发展仍然是汽车和工程机械的主要动力源,有害污染物的排放是其面临的主要问题之一。对于车用内燃机,尾气后处理催化转化技术的应用已经成为各大汽车生产厂家满足各国严格排放标准的主流技术方案。本文在车用尾气催化转化的基本原理的基础上,分析了氧化催化技术和还原催化技术应用现状及前景,并提出未来催化转化技术发展方向。

A Review of Vehicle Exhaust Emissions Catalytic Reduction

With the development ofmany years, the internal combustion engine is still the main power source of the automobile and engineering machinery. The exhaust of harmful pollutants is one of the main problems which faces. For vehicle engine, application of catalytic conversion technologyof aftertreatment has become apopular technology program for the major automobile manufacturers to meet the stringent emis-sion standards. On the basis of the basic principle of catalytic conversion of vehicle exhaust gas, this paper analyzes the present situation and prospect of catalytic oxidation and reduction catalytic technology, and puts forward the development direction of future catalytic conversion technology.