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Nitrogen Oxides Emission Characteristics of Diesel Engine Fuelled by GTL Fuel

机译：GTL燃料供油的柴油机氮氧化物排放特性

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摘要

This paper carried out nitrogen oxides emission characteristics of diesel engine fuelled by GTL fuel. A DI engine for passenger cars is chosen as the test sample, and 5 GTL blends with different mixing ratio are used. The emission behavior of the total NO<,x> emission and the main constituents of NO, NO<,2> and N<,2>O are analyzed. According to the results, the NO <,x> Emission of different GTL blends shows no great differences, and as load increases, the differences become relatively greater. The total NO<,x> emission is mainly composed of NO and NO<,2>. The NO emission of the blends increases as load rises, and NO occupies the biggest proportion of the total NO<,x> emission. NO<,2> also occupies comparatively big proportion., The NO<,2> emission is comparatively low during low and high load, while it is highest during medium load. The high temperature during high load is not in favor of the generation of NO<,2>. The emission of N<,2>O is extremely low, and it is mainly generated during low load; while during mid and high load, it is approximately zero. Lean combustion in cylinders is in favor of the generation of N<,2>O. As the blending proportion of GTL increases, the NO<,x> and NO emission show greater decrease, while NO<,2> emission shows comparatively small increase.
机译：本文研究了以GTL燃料为燃料的柴油机氮氧化物的排放特性。选择用于乘用车的DI发动机作为测试样品，并使用5种混合比例不同的GTL混合物。分析了总的NO x排放的排放行为以及NO，NO 2，N 2 O的主要成分。根据结果​​，不同GTL混合物的NO <，x>排放量没有太大差异，并且随着负荷的增加，差异变得相对更大。总的NO x排放主要由NO和NO 2组成。掺合物的NO排放随着负荷的增加而增加，并且NO在总NOx，x排放中占据最大比例。 NO 2的含量也相对较大。在低负荷和高负荷下，NO 2排放相对较低，而在中等负荷下，NO 2排放最高。高负荷下的高温不利于NO 2的产生。 N，2 O的排放极低，主要是在低负荷下产生的。而在中高负载时，它大约为零。气缸中的稀薄燃烧有利于N 2，O的产生。随着GTL的混合比例增加，NO x和NO排放显示出更大的减少，而NO 2排放显示出相对较小的增加。

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