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An automotive engine charge-air intake conditioner system: analysis of fuel economy benefits in a gasoline engine application
journal contribution
posted on 2009-06-12, 10:51 authored by D.W. Taitt, Colin GarnerColin Garner, E. Swain, D. Blundell, R.J. Pearson, J.W.G. TurnerA 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.
History
School
- Mechanical, Electrical and Manufacturing Engineering
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.Publisher
Professional Engineering Publishing / © IMECHEVersion
- VoR (Version of Record)
Publication date
2006Notes
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/10.1243/09544070JAUTO94ISSN
0954-4070Language
- en