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A Variable-Radius/Length Engine
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English
Abstract
This paper presents the characteristics of a Variable- Radius/Length engine (V-R/L engine) which has an eccentric on the connecting rod big end. This is intended to improve the power output of short-stroke multi-valve engines. The V-R/L engine makes it possible to improve power output through high volumetric efficiency and to delay the ignition timing for best torque (MBT) through refined combustion-chamber shape. However, more improvements are required to apply the mechanism to high-speed engines because of increased friction losses.
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Authors
Citation
Kajiwara, K., "A Variable-Radius/Length Engine," SAE Technical Paper 920453, 1992, https://doi.org/10.4271/920453.Also In
References
- Binder K. Pfeffer V. Wirbeleit F. “Development of Pistons with Variable Compression Height for Increasing Efficiency and Power of Combustion Engines” MTZ 47 1986 5 191 196
- Adams W. H. et al “Analysis of the Combustion Process of a Spark Ignition Engine with a Variable Compression Ratio” SAE , 870610
- Arai Takayuki et al “Variable Compression Ratio Engine for High Power and Low Fuel Consumption” JSAE Autumn Convention Proceeding 892 Society of Automotive Engineers of Japan, Inc. October 1989 892100
- Rychter T. J. Teodorczyk A. “VR/LE Engine with a Variable R/L during a Single Cycle” SAE , 850206
- Rychter T. J. Teodorczyk A. “Economy and NO Emission Potential of an SI Variable R/L Engine” SAE , 850207