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Combustion Technology Development for a High Compression Ratio SI Engine

Journal Article
2011-01-1871
ISSN: 1946-3952, e-ISSN: 1946-3960
Published August 30, 2011 by SAE International in United States
Combustion Technology Development for a High Compression Ratio SI Engine
Sector:
Citation: Yamakawa, M., Youso, T., Fujikawa, T., Nishimoto, T. et al., "Combustion Technology Development for a High Compression Ratio SI Engine," SAE Int. J. Fuels Lubr. 5(1):98-105, 2012, https://doi.org/10.4271/2011-01-1871.
Language: English

Abstract:

Internal combustion engines still play a vital role in realizing the low carbon society. For spark ignition engines, further improvement in thermal efficiency can be achieved by increasing both compression and specific heat ratios. In the current work, the authors developed practical technologies to prevent output power loss due to knocking at full load, which is a critical issue for increasing compression ratio. These new technologies allowed to increase the compression ratio significantly and provide an equivalent torque level as a conventional engine. As a result, thermal efficiency has been improved at partial load.