富氧燃烧对柴油机排放特性的影响

The Effect of Lean-burn on Emission Characteristic for Diesel Engines

柴油机因其废气中的碳烟排放高而被排除在清洁发动机之外。减少碳烟排放的一种方法是增加缸内空气的氧含量 ,使燃烧更彻底充分进行。本文介绍了在S195柴油机上进行富氧燃烧试验 ,对其排放特性进行比较与分析 ,通过试验研究 。

Although diesel engines are the engines thathave the highest efficiency, the black smoke in their exhaust hasgenerally kept these engines off the list of clean engines. One Way to reduce the black smoke emission is to increase the oxygen content in the cylinder air so that the engine will burn the fuel more thoroughly. The way, however, has always had a catch. Reduction in smoke is accompanied by an increase in nitrogen oxide emissions. This paper introduces the lean-burn on a model S195 diesel engine, and compares emission characteristics of the diesel engine under various oxygen contents. The aid is to find out the method of reducing smoke and NOx emission at the same time under the condition of air rich in oxygen by means of experiment.