Int. J. of Oil, Gas and Coal Technology   »   2017 Vol.16, No.2

 

 

Title: Comparative investigation of emissions and combustion characteristics between ethanol-biodiesel-diesel blends and diesel fuel in a passenger car diesel engine

 

Authors: Kibong Choi; Hyun Gu Roh; Chang Sik Lee

 

Addresses:
School of Mechanical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
Department of Mechanical and Automotive Engineering, Induk University, 14 Choansan-gil, Nowon-gu, Seoul 01878, Republic of Korea
School of Mechanical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea

 

Abstract: This study investigated the comparison of emissions and performance characteristics between ethanol-biodiesel-diesel blends and diesel fuel in a passenger car diesel engine. In order to analyse the effect of ethanol-biodiesel blends, the combustion and emission reduction characteristics of a four-cylinder diesel engine with common-rail direct injection system were investigated under the various injection and blended ratios. The experimental results showed that the combustion pressure of ethanol-biodiesel-diesel blended fuels slightly increased than that of convention diesel fuel at higher load condition, while the coefficient of variance of the combustion pressure (COVimep) showed almost the similar values. Under low-load conditions, the effects of ethanol-biodiesel blending to conventional diesel fuel on exhaust emissions showed that brake specific CO emission (BS-CO) and BS-HC emissions remarkably increased while BS-NOx emissions decreased as ethanol blending ratio increased. Under high load conditions, BS-CO, BS-HC and BS-NOx emissions slightly increased as ethanol blending ratio increased. On the other hand, the BS-Soot emissions were reduced by more than 50% in all conditions. [Received: October 16, 2015; Accepted: June 8, 2016]

 

Keywords: combustion characteristics; emissions characteristics; alternative fuels; ethanol blends.

 

DOI: 10.1504/IJOGCT.2017.10007007

 

Int. J. of Oil, Gas and Coal Technology, 2017 Vol.16, No.2, pp.203 - 216

 

Available online: 10 Aug 2017

 

 

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