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Thermal Efficiency Improvement of a Lean-Boosted Spark Ignition Engine by Multidimensional Simulation with Detailed Chemical Kinetics
- Source :
- International Journal of Automotive Engineering, Vol 6, Iss 4, Pp 97-104 (2015)
- Publication Year :
- 2015
- Publisher :
- Society of Automotive Engineers of Japan, Inc., 2015.
-
Abstract
- This paper aims to improve thermal efficiency of spark ignition engine by numerical calculation with detailed chemistry. Experimental results from a four-stroke-single-cylinder engine are compared with that of simulations. It is experimentally found that peak efficiency is achieved at lean-limit combustion under excess air ratio λ=1.6. Due to engine output power loss, further investigations are conducted under lean-boost operations. The best condition of the lean-boost mode is at λ=1.3 and 150 kPa boosted pressure (abs). To further improve the efficiency without power loss, simulations are conducted under lean-boost combustion with dilution rate, high engine swirl, and high knock resistant fuel.
- Subjects :
- Motor vehicles. Aeronautics. Astronautics
TL1-4050
Subjects
Details
- Language :
- English
- ISSN :
- 21850992
- Volume :
- 6
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- International Journal of Automotive Engineering
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.0425d86f74064b92ad3428d1fed77a4e
- Document Type :
- article
- Full Text :
- https://doi.org/10.20485/jsaeijae.6.4_97