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Evaluation of a Spark Plug by the Preignition Simulator
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English
Abstract
To evaluate the quality of a spark plug against the preignition, a new preignition simulator has been developed. The principle of this apparatus is to estimate the occurrence of preignition caused by a temperature rise in the electrode.
The engine is operated with repeated stepwise shifting of spark timing by 55° CA advance from the MET condition. The number of advanced cycles is increased until the occurrence of real preignitions. By the number of advanced cycles when preignition occurs, the quality of the spark plug with respect to preignition can be evaluated.
From this test result, it is confirmed that this preignition simulator is very useful for the practical application of experimental testing.
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Citation
Igashira, T., Kawai, H., Yoshinaga, T., and Nakamura, N., "Evaluation of a Spark Plug by the Preignition Simulator," SAE Technical Paper 880692, 1988, https://doi.org/10.4271/880692.Also In
References
- Bradish, J. P. Myers, P. S. Uyehara O. A. “Effects of Deposit Properties or Volumetric Efficiency, ,Heat Transfer, and Preignition in Internal Combustion Engines” SAE Paper 660130 1966
- Menrad Holger Haselhorst Manfred Brwig Walter “Preignition and Knock Behavior of Alcohol Fuels” SAE Paper 821210 1982
- Phoebe, C. H. Wagner J. F. “Cylinder Pressure Behavior with Runaway Surface Ignition” SAE Paper 690517 1969
- Guibet, J. C. Duval A. “New Aspects of Preignition in European Automotive Engines” SAE Paper 720114 1972
- Young, C. T. Grimes D. A. “Erosion Mechanisms of Automotive Spark Plug Electrodes” SAE Paper 780330 1978