Effect of Exhaust Gas Recirculation and Injection Pressure on Exhaust Emissions from a Diesel Engine

Autor:	Takuji Ishiyama, Makoto Ikegami, Koichiro Nakatani, Shunsaku Nakai, Tomohiro Ohtani
Rok vydání:	2000
Předmět:	Spray characteristics Diesel exhaust Waste management business.industry Mechanical Engineering Exhaust gas Condensed Matter Physics Diesel engine Internal combustion engine Environmental science Exhaust gas recirculation business Diesel exhaust fluid Secondary air injection
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 66:1578-1585
ISSN:	1884-8346 0387-5016
DOI:	10.1299/kikaib.66.646_1578
Popis:	To clarify optimal combination of high-pressure injection and exhaust gas recirculaton (EGR) for simultaneous reduction of nitric oxides (NOχ) and particulate (PM) emissions in the diesel engine exhaust, an experimental and theoretical study was performed on a single cylinder test engine. The measured tendencies of NOχ and PM were evaluated in terms of spray characteristics under various injection conditions and of exhaust recirculation rate. The results suggest that the enhancement of air entrainment and turbulent mixing effectively reduce the PM without deterioration of NOχ emission performance at a high exhaust recirculation rate. From an analysis based on a stochastic diesel combustion model, this phenomenon is due to the change in maximum temperature at which the mixture can arrive.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::74cfa4f73bb67cf096f46264f65fc0dd https://doi.org/10.1299/kikaib.66.646_1578 Zobrazit plný text záznamu