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Multi-Dimensional Analysis of NOx and Soot Formation in a Diesel-Fueled Hydraulic Free Piston Engine

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Abstract:

This paper is aimed at simulating and analyzing emission NOx and Soot formation in the hydraulic free piston engine (HFPE) designed and constructed by Jilin University. The combustion process of HFPE is simulated by using the commercial CFD software AVL FIRE, and the flow field and factors that influence NOx and Soot formation were analyzed. The simulated results indicate that NO is mainly distributed in the burned zone, whereas the distribution of Soot acts in accord with high unburnt equivalence ratio and high temperature burned zone. Injection timing increases, the amount of the formation of NO is reduced, whereas the mass fraction of Soot rises to a peak and descends. And small swirl ratio exerts a minor influence on emission mass fraction of HFPE.

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Periodical:

Advanced Materials Research (Volumes 690-693)

Pages:

2800-2804

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.690-693.2800

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Online since:

May 2013

Authors:

Ying Xiao Yu, Zhao Cheng Yuan, Jia Yi Ma, Shi Yu Li

Keywords:

Combustion, Free Piston Engine, NOx, Soot

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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