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Cycle-To-Cycle Variations: A Chaotic Process?
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English
Abstract
A simple spark ignition engine cycle model has been used to illustrate the concept that cycle-to-cycle variations are an inherent consequence of non-linear combustion kinetics. Sample calculations show highly chaotic behavior when the burn time occupies an excessive fraction of the cycle time. The results are consistent with the well known fact the the engine designer must strive to shorten the burn time as much as possible to minimize variations.
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Citation
Daily, J., "Cycle-To-Cycle Variations: A Chaotic Process?," SAE Technical Paper 870165, 1987, https://doi.org/10.4271/870165.Also In
SAE 1987 Transactions: Reciprocating Engines--Spark Ignition and Diesel
Number: V96-4; Published: 1988-09-01
Number: V96-4; Published: 1988-09-01
References
- Young M. B. “Cyclic Dispersion in the Homogeous-Charge Spark-Ignition Engine - A Literature Survey,” SAE Paper 810020 1981
- Kantor J. C. “A Dynamical Instability of Spark Ignition Engines,” Science 224 1233 1235 1984
- Matekunas F. A. “Mode and Measures of Cyclic Combustion Variability,” General Motors Research Report GMR-4239 1983