Performance and emission characteristics of double split injection biodiesel engine with intake air throttling

Lai, C-M, Leong, HK, Teoh, YH, How, HG, Le, TD, Nguyen, HT, Al-Attab, KA, Zhang, S, Ansar, S and Sher, F ORCID: https://orcid.org/0000-0003-2890-5912, 2023. Performance and emission characteristics of double split injection biodiesel engine with intake air throttling. Journal of Cleaner Production, 429: 139597. ISSN 0959-6526

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Abstract

Most diesel engines typically operate with high excess air in part load. Implementing air intake restriction with exhaust gas recirculation (EGR) could be a viable option for mitigating NOx emission and soot, particularly when utilizing biodiesel, attributing to biodiesel's inherent oxygen content. This study examines the effect of intake air throttle and EGR coupled with split injection strategies on a turbocharged 4-cylinder engine fuelled with B60-POME fuel. A parametric test was conducted to examine the impact of fuel injection pressure, intake air throttling and EGR, followed by Response Surface Methodology (RSM) optimisation. When EGR is implemented with a 45% intake throttle opening, a relatively low EGR rate of 5% is achieved. A study utilising RSM was conducted to optimise the control of air supply and split injection parameters, involved with a total of 6 control variables. The optimum parameter appears at a dwell angle of 12 °CA, SOI timing of −4°ATDC, 40% intake throttle opening, EGR of 6.75%, fuel injection pressure of 800 bar and split injection ratio of 50%. These settings yield prediction emission results that are closely similar to those obtained from the actual confirmation test.

Item Type:	Journal article
Publication Title:	Journal of Cleaner Production
Creators:	Lai, C.-M., Leong, H.K., Teoh, Y.H., How, H.G., Le, T.D., Nguyen, H.T., Al-Attab, K.A., Zhang, S., Ansar, S. and Sher, F.
Publisher:	Elsevier
Date:	1 December 2023
Volume:	429
ISSN:	0959-6526
Identifiers:	Number Type 10.1016/j.jclepro.2023.139597 DOI S0959652623037551 Publisher Item Identifier 1871022 Other
Rights:	This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/).
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	12 Mar 2024 09:53
Last Modified:	12 Mar 2024 09:53
URI:	https://irep.ntu.ac.uk/id/eprint/51052

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