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Investigating
RUMBLE
in Single-Cylinder Engines
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Language:
English
Abstract
RUMBLE is a low-frequency noise heard in high compression engines and accompanied by high rates of pressure rise. Thus, rumble indicates a rapid combustion process. This paper describes a method of studying this problem: by detection of flame fronts by ionization gaps.
Results of experiments show that rumble is caused by deposit ignition in the end-gas region. These multiple ignitions occur after the normal flame front has progressed partially across the chamber. The authors conclude that this type of deposit ignition is generally a self-sustaining process, lasting until the deposits are burned out at a particular engine performance level. When the level is increased, the process repeats itself.
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Citation
Robison, J., Behrens, M., and Mosher, R., "InvestigatingAlso In
References
- SAE Transactions Vol. 34 1934 17 24 “Engine-Cylinder Flame Propagation Studied by New Methods,” Schnauffer. Kurt Dr.
- SAE Transactions Vol. 62 1954 32 39 “An Investigation of Preignition in Engines,” Melby, A. O. Diggs, D. R. Sturgis. B. M.
- SAE Transactions Vol. 66 1958 549 556 “Investigating Combustion Phenomena in Unmodified Engines,” Robison, J. A. Behrens, M. D. Mosher, R. G. Chandler. J. M.