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Title: An automotive engine charge-air intake conditioner system: analysis of fuel economy benefits in a gasoline engine application
Authors: Taitt, D.W.
Garner, Colin P.
Swain, E.
Blundell, D.
Pearson, R.J.
Turner, J.W.G.
Keywords: Internal combustion engine
Pressure charging
Intercooling
Charge-air temperature
Expander
Compression ratio
Knock
Fuel economy
Issue Date: 2006
Publisher: Professional Engineering Publishing / © IMECHE
Citation: TAITT, D.W.... et al., 2006. An automotive engine charge-air intake conditioner system: analysis of fuel economy benefits in a gasoline engine application. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 220(9), pp. 1293-1307.
Abstract: A combination of analytical techniques has been used to quantify the potential fuel economy benefits of an automotive engine charge-air intake conditioner system applied to a spark-ignited gasoline engine. This system employs a compressor, intercooler, and expander to provide increased charge density with the possibility of reducing charge-air temperature below sink temperature. This reduction in charge-air temperature provides the potential for improved knock resistance at full load; thereby allowing the possibility of increasing compression ratio with corresponding benefits in thermodynamic cycle efficiency and part-load fuel economy. The four linked and interfaced models comprised a first-law thermodynamic model of the charge-air conditioner system, a one-dimensional engine cycle simulation, a two-zone combustion model, and a knock criterion model. An analysis was carried out under full load at 3000 r/min and showed that a charge-air conditioner system - with compressor, intercooler, and expander efficiencies of 0.8 - allowed the compression ratio to be increased by approximately half a ratio, which gave up to 1.5 per cent reduction in brake specific fuel consumption at 2000 r/min 2 bar brake mean effective pressure when compared with a conventional pressure charger intercooler system with no expander.
Description: This is an article from the journal, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering [© IMechE ]. It is also available at: http://dx.doi.org/10.1243/09544070JAUTO94
Version: Published
DOI: 10.1243/09544070JAUTO94
URI: https://dspace.lboro.ac.uk/2134/4830
ISSN: 0954-4070
Appears in Collections:Published Articles (Mechanical and Manufacturing Engineering)

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