Exhaust Gas Dose Uniformity in Modern Diesel Engines

Krakowian, Konrad; Kaźmierczak, Andrzej; Górniak, Aleksander; Włostowski, Radosaw; Błasiński, Tomasz

doi:10.5604/12314005.1137928

Cited by 2 publications

(1 citation statement)

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“…In consequence less of oxygen reacts with nitrogen which results in limitation of NOx emission. Additionally the exhaust gases recirculation promotes evaporation of the fuel and the oxidation of unburned hydrocarbons [2]. In the case of the use of EGR in a multi-cylinder internal combustion engine, the most important factor is to supply charge for individual cylinders of the same composition in order to achieve a similar combustion process.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

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Abstract. 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.

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Section: Introductionmentioning

confidence: 99%