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The Method for Evaluation of Irregular Combustion in a 2-stroke Cycle Gasoline Engine
Published November 01, 1991 by Society of Automotive Engineers of Korea in South Korea
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2-stroke cycle gasoline engines are prone to irregular combustion at low speeds and under light loads. In motorcycles, this causes vibration of the body and adversely effects riding quality.
A system for quantifying such irregular combustion was established so that the riding quality of a motorcycle could be assessed through a bench test of its engine.
It was verified through a series of tests performed on this system that there is a significant correlation between the actual riding quality and σPmi assessed by the system.
Accordingly, this system has become an effective means for predicting the riding quality of a motorcycle through a bench test of its engine.
Making use of this system, it was also found that some of the typical engine operating factors, such as the air-fuel ratio and ignition timing, have optimum values for reducing irregular combustion in engines under certain conditions.
CitationSekine, M. and Ishikawa, T., "The Method for Evaluation of Irregular Combustion in a 2-stroke Cycle Gasoline Engine," SAE Technical Paper 912617, 1991.
- Everett R. L. 1971 “Measuring Vehicle Driveability,” SAE Paper 710137
- Hata Goto 1981 “Exhaust Control in 2-Stroke Cycle Motorcycles with a Butterfly Exhaust Valve,” Internal Combustion Engines 20 11 17