Preliminary investigation to combustion in a SI engine with direct ethanol injection and port gasoline injection (EDI+GPI)

Zhuang, Y; Hong, G; Wang, J

Preliminary investigation to combustion in a SI engine with direct ethanol injection and port gasoline injection (EDI+GPI)

Zhuang, Y Hong, G

Wang, J

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Publication Type:: Conference Proceeding
Citation:: Proceedings of the 18th Australasian Fluid Mechanics Conference, AFMC 2012, 2012
Issue Date:: 2012-01-01

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Field	Value	Language
dc.contributor.author	Zhuang, Y	en_US
dc.contributor.author	Hong, G https://orcid.org/0000-0002-1905-1161	en_US
dc.contributor.author	Wang, J https://orcid.org/0000-0002-6282-0456	en_US
dc.date.issued	2012-01-01	en_US
dc.identifier.citation	Proceedings of the 18th Australasian Fluid Mechanics Conference, AFMC 2012, 2012	en_US
dc.identifier.isbn	9780646583730	en_US
dc.identifier.uri	http://hdl.handle.net/10453/31692
dc.description.abstract	Ethanol fuel, as a renewable fuel can play an important role in addressing the critical issue of energy resources if it is used in a proper way. Ethanol direct injection plus gasoline port injection (EDI+GPI) is such a new way to enable substantial improvement in engine efficiency and emission reduction in spark ignition engines. This paper reports our preliminary investigation to the combustion and emissions in this new dual fuel injection system. Experiments were conducted on a single-cylinder spark ignition engine equipped with EDI+GPI. In the experiments, the ethanol/gasoline volumetric percentage (EVP) was varied from 0% (gasoline fuel only) to 71%. Mass burnt fraction and indicated mean effective pressure (IMEP) were calculated from the measured cylinder pressure for analysing the combustion process. The variance of IMEP, reduced with the increased EVP, showed that the combustion stability was improved by the direct injection of ethanol fuel. The effect of EVP on initial, early and major combustion time periods showed that ethanol fuel's higher combustion velocity and low ignition energy might contribute to accelerating the flame propagating, shortening the combustion periods and reducing the combustion temperature when EVP was less than 48%. However further increase of EVP when it was over 48% resulted in a negative effect on combustion which might be caused by the ethanol fuel's over cooling effect. Hydrocarbon and carbon monoxide emission increased and nitric oxide emission decreased with the increase of EVP.	en_US
dc.relation.ispartof	Proceedings of the 18th Australasian Fluid Mechanics Conference, AFMC 2012	en_US
dc.title	Preliminary investigation to combustion in a SI engine with direct ethanol injection and port gasoline injection (EDI+GPI)	en_US
dc.type	Conference Proceeding
utslib.for	090201 Automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)	en_US
utslib.for	091504 Fluidisation and Fluid Mechanics	en_US
dc.location.activity	Launceston, Tasmania, Australia
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	open_access
dc.rights.holder	Copyright 2014 Australasian Fluid Mechanics Society. Systematic reproduction and distribution, duplication of any material in this paper for any financial profit or for commercial purposes, or modification of the content of the paper are prohibited.
pubs.publication-status	Published	en_US

Abstract:

Ethanol fuel, as a renewable fuel can play an important role in addressing the critical issue of energy resources if it is used in a proper way. Ethanol direct injection plus gasoline port injection (EDI+GPI) is such a new way to enable substantial improvement in engine efficiency and emission reduction in spark ignition engines. This paper reports our preliminary investigation to the combustion and emissions in this new dual fuel injection system. Experiments were conducted on a single-cylinder spark ignition engine equipped with EDI+GPI. In the experiments, the ethanol/gasoline volumetric percentage (EVP) was varied from 0% (gasoline fuel only) to 71%. Mass burnt fraction and indicated mean effective pressure (IMEP) were calculated from the measured cylinder pressure for analysing the combustion process. The variance of IMEP, reduced with the increased EVP, showed that the combustion stability was improved by the direct injection of ethanol fuel. The effect of EVP on initial, early and major combustion time periods showed that ethanol fuel's higher combustion velocity and low ignition energy might contribute to accelerating the flame propagating, shortening the combustion periods and reducing the combustion temperature when EVP was less than 48%. However further increase of EVP when it was over 48% resulted in a negative effect on combustion which might be caused by the ethanol fuel's over cooling effect. Hydrocarbon and carbon monoxide emission increased and nitric oxide emission decreased with the increase of EVP.

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http://hdl.handle.net/10453/31692