Burn Modes and Prior-Cycle Effects on Cyclic Variations in Lean-Burn Spark-Ignition Engine Combustion 880201
Cyclic variation is examined by: (1) conditional grouping and heat-release analysis to reveal different modes of combustion, (2) considering the order in which the burn modes occur to establish prior-cycle effects and (3) comparing the measured variation in IMEP with data generated by simple models.
Results show that several burn modes may exist, particularly under fuel-lean conditions. Prior-cycle effects also become more obvious as the air-fuel ratio is increased. Finally, comparisons with data generated by simple models show that the nature of cyclic variation may range from completely stochastic to a superposition of a non-chaotic deterministic process on a stochastic process.
Citation: Martin, J., Plee, S., and Remboski, D., "Burn Modes and Prior-Cycle Effects on Cyclic Variations in Lean-Burn Spark-Ignition Engine Combustion," SAE Technical Paper 880201, 1988, https://doi.org/10.4271/880201. Download Citation
Jay K. Martin, Steven L. Plee, Donald J. Remboski
University of Wisconsin-Madison Madison, WI, Barrack Technology, Ltd. Marlborough, MA
SAE International Congress and Exposition
SAE Transactions Journal of Fuels and Lubricants-V97-3