Influence of the single EGR valve usability on development of the charge directed to individual cylinders of an internal combustion engine

Autor: Krakowian Konrad, Kaźmierczak Andrzej, Górniak Aleksander, Wróbel Radosław
Jazyk: English<br />French
Rok vydání: 2017
Předmět:
Zdroj: E3S Web of Conferences, Vol 22, p 00088 (2017)
Druh dokumentu: article
ISSN: 2267-1242
DOI: 10.1051/e3sconf/20172200088
Popis: Exhaust gas recirculation systems (EGR), aside to a catalytic converters, are nowadays widely used in piston internal combustion engines to reduce nitrogen oxides (NOx) in the exhaust gas. They are characterized in that a portion of exhaust gases from the exhaust manifold is recirculated (via a condenser), and directed to a particular valve. The valve, depending on the current engine load and speed, doses the appropriate amount of exhaust gas into the exhaust manifold. Moreover, its location has a significant impact on the diverse formation of nitrogen oxides and fumes smokiness from the individual cylinders of the engine, which is a result of uneven propagation of exhaust gas into the channels of the intake manifold. This article contains the results of numerical characterized charges formed in symmetrical intake manifold with a centrally–placed EGR valve. Simulations were performed for the original intake system derived from the two-liter, turbocharged VW diesel engine.
Databáze: Directory of Open Access Journals