Experimental Study of EGR on Performance and Emissions of a Turbocharged DME Engine

Jun Hua Wu; Fu Shan Zuo; Yong Hui Zhang

doi:10.4028/www.scientific.net/AMR.886.257

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 886Experimental Study of EGR on Performance and...

Experimental Study of EGR on Performance andEmissions of a Turbocharged DME Engine

Abstract:

This paper presents anexperimental study on reduction of NO_x emission of a turbochargedengine fuelled with DME by means of EGR. Effects of EGR rate on engineefficiency and emission behavior was evaluated. The results show that the EGRcould be used as an effective way to reduce NO_xemission. NO_xisreduced almost linearly with increase of EGR rate. At low load condition, theNO_xemission is reduced by 80% with 40% EGR rate without any economypenalty. At high load condition, the same substantial reduction of NO_xcouldbe achieved with only 20% EGR rate. While the HC and CO emissions are increasedwith increase of EGR rate. However, it is worth noting that EGR had a negativeeffect on fuel consumption at high load. Low EGR ratio should be taken at highengine load condition.

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Periodical:

Advanced Materials Research (Volume 886)

Pages:

257-261

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.886.257

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Online since:

January 2014

Authors:

Jun Hua Wu*, Fu Shan Zuo, Yong Hui Zhang

Keywords:

DME, EGR, Engine Combustion, NO_x Reduction

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