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Hydrogen-diesel fuel co-combustion strategies in light duty and heavy duty CI engines

Talibi, M; Hellier, P; Morgan, R; Lenartowicz, C; Ladommatos, N; (2018) Hydrogen-diesel fuel co-combustion strategies in light duty and heavy duty CI engines. International Journal of Hydrogen Energy , 43 (18) pp. 9046-9058. 10.1016/j.ijhydene.2018.03.176. Green open access

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Abstract

The co-combustion of diesel fuel with H 2 presents a promising route to reduce the adverse effects of diesel engine exhaust pollutants on the environment and human health. This paper presents the results of H 2 -diesel co-combustion experiments carried out on two different research facilities, a light duty and a heavy duty diesel engine. For both engines, H 2 was supplied to the engine intake manifold and aspirated with the intake air. H 2 concentrations of up to 20% vol/vol and 8% vol/vol were tested in the light duty and heavy duty engines respectively. Exhaust gas circulation (EGR) was also utilised for some of the tests to control exhaust NO x emissions. The results showed NO x emissions increase with increasing H 2 in the case of the light duty engine, however, in contrast, for the heavy duty engine NO x emissions were stable/reduced slightly with H 2 , attributable to lower in-cylinder gas temperatures during diffusion-controlled combustion. CO and particulate emissions were observed to reduce as the intake H 2 was increased. For the light duty, H 2 was observed to auto-ignite intermittently before diesel fuel injection had started, when the intake H 2 concentration was 20% vol/vol. A similar effect was observed in the heavy duty engine at just over 8% H 2 concentration.

Type: Article
Title: Hydrogen-diesel fuel co-combustion strategies in light duty and heavy duty CI engines
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.ijhydene.2018.03.176
Publisher version: https://doi.org/10.1016/j.ijhydene.2018.03.176
Language: English
Additional information: Copyright © 2018 The Authors. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keywords: Hydrogen, Co-combustion strategies, Diesel engine, Light duty, Heavy duty, EGR, Exhaust emissions
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/10047601
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