Experimental and numerical investigations on the combustion and emission characteristics of an ethanol/diesel dual-fuel engine

DOI

10.2991/icreet-16.2017.26How to use a DOI?

Keywords

ethanol/diesel; simulation; combustion; emission; cyclic variation;

Abstract

Experiments and simulations were conducted to investigate the combustion and emission characteristics of ethanol/diesel dual-fuel combustion. The experiments were performed on a light-duty diesel engine with direct injection of diesel combined with port injection of ethanol. The results showed that the ethanol/diesel dual-fuel mode could reduce soot and NOx emissions simultaneously without EGR even at the higher load. However, the UHC and CO emissions of the ethanol/diesel dual-fuel mode increased gradually with the increase of ethanol proportion. Simulations showed that high UHC and CO emissions were formed in the crevice regions as well as cylinder center due to the lower reactivity of ethanol. It was also found that the cyclic variations of the ethanol/diesel dual-fuel mode increased gradually with the increase of premixed ratio at both loads. This was mainly due to the lower reactivity of ethanol.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Shijun Dong
AU  - Xiaobei Cheng
AU  - Biao Ou
PY  - 2017/03
DA  - 2017/03
TI  - Experimental and numerical investigations on the combustion and emission characteristics of an ethanol/diesel dual-fuel engine
BT  - Proceedings of the 2016 4th International Conference on Renewable Energy and Environmental Technology (ICREET 2016)
PB  - Atlantis Press
SP  - 147
EP  - 154
SN  - 2352-5401
UR  - https://doi.org/10.2991/icreet-16.2017.26
DO  - 10.2991/icreet-16.2017.26
ID  - Dong2017/03
ER  -