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

• Published in: E3S Web of Conferences Vol. 22; p. 88
• Main Authors: Krakowian, Konrad, Kaźmierczak, Andrzej, Górniak, Aleksander, Wróbel, Radosław
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01.01.2017
• Subjects: Automotive parts; Catalytic converters; Combustion; Computer simulation; Diesel engines; Emission control equipment; Engine cylinders; Exhaust emissions; Exhaust gases; Exhaust systems; Fumes; Gases; Intake manifolds; Intake systems; Internal combustion engines; Nitrogen oxides; Oxides; Photochemicals; Recirculating systems; Superchargers; Trucks
• ISSN: 2267-1242; 2555-0403; 2267-1242
• DOI: 10.1051/e3sconf/20172200088

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.