Inevitability of Engine-Out Nox Emissions from Spark-Ignition and Diesel Engines.

Flynn, P. F. ; Hunter, G. L. ; Farrell, L. A.

Technical Information Center Oak Ridge Tennessee

关键词: Internal combustion engines;    Nitrogen oxides;    Spark ignition engines;    Diesel engines;    Combustion;   

RP-ID  :  DE200415008100

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Internal combustion engines, both spark ignition and diesel, are dominant types of vehicle power sources and also provide power for other important stationary applications. Overall, these engines are a central part of power generation in modern society. However, these engines, burning hydrocarbon fuels from natural gas to gasoline and Diesel fuel, are also responsible for a great deal of pollutant emissions to the environment, especially oxides of nitrogen (NO,) and unburned hydrocarbons (UHC). In recent years, pollutant species emissions from internal combustion engines have been the object of steadily more stringent limitations from various governmental agencies. Engine designers have responded by developing engines that reduce emissions to accommodate these tighter limitations. However, as these limits become ever more stringent, the ability of engine design modifications to meet those limits must be questioned.