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Statistical Analysis of the Pondered Deviation from Reference Index for Knock Detection in Internal Combustion Engines
Journal Article
03-15-05-0037
ISSN: 1946-3936, e-ISSN: 1946-3944
Sector:
Citation:
Marenco, M. and Amador, G., "Statistical Analysis of the Pondered Deviation from Reference Index for Knock Detection in Internal Combustion Engines," SAE Int. J. Engines 15(5):689-702, 2022, https://doi.org/10.4271/03-15-05-0037.
Language:
English
Abstract:
This article develops an analysis about the statistical nature of the Pondered
Deviation from Reference (PDrs
) index for knock detection in internal combustion engines. The
statistical analysis proved that the PDrs
index is a statistic whose probability distribution function follows a
log-normal distribution with a mean and variance of 1.015 and 0.0103,
respectively. The distribution and the probability knock threshold of the
PDrs
index is independent of engine operating conditions, types of engines,
and fuels used. Through Monte Carlo’s simulations were stated that the
probability knock threshold is equal to 1.64. Thereby, engines run with abnormal
combustion if the PDrs
is greater than 1.64, whereas if PDrs
≤ 1.64, engines run under normal combustion.
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