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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/20061

Title: Analysis of the particulate emissions and combustion performance of a direct injection spark ignition engine using hydrogen and gasoline mixtures
Authors: Zhao, Huayong
Stone, Richard
Zhou, Lei
Keywords: Hydrogen
Gasoline direct injection engine
Combustion
Particulate emissions
Issue Date: 2010
Publisher: Published by Elsevier
Citation: ZHAO, H., STONE, R. and ZHOU, L., 2010. Analysis of the particulate emissions and combustion performance of a direct injection spark ignition engine using hydrogen and gasoline mixtures. International Journal of Hydrogen Energy, 35(10), pp. 4676-4686.
Abstract: Three different fractions (2%, 5%, and 10% of stoichiometric, or 2.38%, 5.92%, and 11.73% by energy fraction) of hydrogen were aspirated into a gasoline direct injection engine under two different load conditions. The base fuel was 65% iso-octane, and 35% toluene by volume fraction. Ignition sweeps were conducted for each operation point. The pressure traces were recorded for further analysis, and the particulate emission size distributions were measured using a Cambustion DMS500. The results indicated a more stable and faster combustion as more hydrogen was blended. Meanwhile, a substantial reduction in particulate emissions was found at the low load condition (more than 95% reduction either in terms of number concentration or mass concentration when blending 10% hydrogen). Some variation in the results occurred at the high load condition, but the particulate emissions were reduced in most cases, especially for nucleation mode particulate matter. Retarding the ignition timing generally reduced the particulate emissions. An engine model was constructed using the Ricardo WAVE package to assist in understanding the data. The simulation reported a higher residual gas fraction at low load, which explained the higher level of cycle-by-cycle variation at the low load.
Description: This paper was accepted for publication in the journal International Journal of Hydrogen Energy and the definitive published version is available at: http://dx.doi.org/10.1016/j.ijhydene.2010.02.087
Version: Accepted for publication
DOI: 10.1016/j.ijhydene.2010.02.087
URI: https://dspace.lboro.ac.uk/2134/20061
Publisher Link: http://dx.doi.org/10.1016/j.ijhydene.2010.02.087
ISSN: 0360-3199
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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