Energy Conservation with Increased Compression Ratio and Electronic Knock Control

790173

02/01/1979

Event
1979 Automotive Engineering Congress and Exposition
Authors Abstract
Content
Previous investigations have shown that fuel economy gains are possible in vehicles with increased compression ratio engines that meet 1978 Federal emission standards using oxidizing converter-EGR emission control systems. There has been no incentive to raise compression ratios, however, since the vehicle gains are offset by energy losses in the refinery due to refining the higher octane unleaded fuel required by high compression ratio engines. This paper discusses the application of an electronic closed loop knock control system to a higher compression ratio engine to allow operation on 91 Research Octane Number fuel. Two cars with different compression ratios are compared with both oxidizing converter - EGR and 3-way oxidizing-reducing converter-EGR closed loop carburetor emission control systems.
Meta TagsDetails
DOI
https://doi.org/10.4271/790173
Pages
9
Citation
Currie, J., Grossman, D., and Gumbleton, J., "Energy Conservation with Increased Compression Ratio and Electronic Knock Control," SAE Technical Paper 790173, 1979, https://doi.org/10.4271/790173.
Additional Details
Publisher
Published
Feb 1, 1979
Product Code
790173
Content Type
Technical Paper
Language
English