Cyclic dynamics of misfires and partial burns in a dilute spark-ignition engine

Rachel Stiffler; Brian Kaul; James Drallmeier

doi:10.1177/0954407020964004

Cyclic dynamics of misfires and partial burns in a dilute spark-ignition engine

Rachel Stiffler, Brian Kaul, James Drallmeier

Fuel Science & Engine Technologies Resea

Missouri University of Science and Technology

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

This study investigates the cyclic dynamics of cumulative heat release data past the edge of stability in a dilute spark-ignition engine. Emphasis is placed on analyzing the cyclic dynamics near the dilute limit where partial burns and misfires are frequent. These events are often followed by a higher-energy cycle due to the feed-forward mechanism present in the residual gases. These patterns are deterministic and increase the coefficient of variation to undesirable levels. Symbol sequence analysis was used to investigate the cyclic dynamics of these low–high patterns. The heat release was partitioned on an energy basis to give physical meaning to each partition and each sequence created when analyzing the symbol sequence results. This partitioning method provided insight into the differences in the dynamics when operating in the misfire or partial burn regime. These differences could impact the control method used.

Original language	English
Pages (from-to)	333-345
Number of pages	13
Journal	Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
Volume	235
Issue number	2-3
DOIs	https://doi.org/10.1177/0954407020964004
State	Published - Feb 2021

Bibliographical note

Publisher Copyright:
© IMechE 2020.

Funding

The authors wish to thank Dr. Charles Finney from Oak Ridge National Laboratory for his expertise and technical advice related to the symbol sequencing analysis. The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was funded in part by the US Department of Energy’s Vehicle Technologies Office under the guidance of the Advanced Combustion Engine Research and Development program managed by Gurpreet Singh and Michael Weismiller. The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was funded in part by the US Department of Energy’s Vehicle Technologies Office under the guidance of the Advanced Combustion Engine Research and Development program managed by Gurpreet Singh and Michael Weismiller.

Funders	Funder number
U.S. Department of Energy
Oak Ridge National Laboratory

Keywords

Cyclic dynamics
combustion stability
dilute spark-ignition combustion
misfires and partial burns
symbol sequencing

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10.1177/0954407020964004

Cite this

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abstract = "This study investigates the cyclic dynamics of cumulative heat release data past the edge of stability in a dilute spark-ignition engine. Emphasis is placed on analyzing the cyclic dynamics near the dilute limit where partial burns and misfires are frequent. These events are often followed by a higher-energy cycle due to the feed-forward mechanism present in the residual gases. These patterns are deterministic and increase the coefficient of variation to undesirable levels. Symbol sequence analysis was used to investigate the cyclic dynamics of these low–high patterns. The heat release was partitioned on an energy basis to give physical meaning to each partition and each sequence created when analyzing the symbol sequence results. This partitioning method provided insight into the differences in the dynamics when operating in the misfire or partial burn regime. These differences could impact the control method used.",

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AB - This study investigates the cyclic dynamics of cumulative heat release data past the edge of stability in a dilute spark-ignition engine. Emphasis is placed on analyzing the cyclic dynamics near the dilute limit where partial burns and misfires are frequent. These events are often followed by a higher-energy cycle due to the feed-forward mechanism present in the residual gases. These patterns are deterministic and increase the coefficient of variation to undesirable levels. Symbol sequence analysis was used to investigate the cyclic dynamics of these low–high patterns. The heat release was partitioned on an energy basis to give physical meaning to each partition and each sequence created when analyzing the symbol sequence results. This partitioning method provided insight into the differences in the dynamics when operating in the misfire or partial burn regime. These differences could impact the control method used.

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Cyclic dynamics of misfires and partial burns in a dilute spark-ignition engine

Abstract

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Keywords

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