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Cycle-to-Cycle Variation Study of an SI Engine Fired by Spark Plug and a Non Conventional Device
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English
Abstract
This paper reports on an experimental investigation of an SI single cylinder engine cycle-to-cycle variations. Two different ignition devices are studied: a spark plug and a non conventional ignition device, PJC (Pulsed Jet Combustion).
In-cylinder pressure is analyzed via a complete heat release rate computation.
A significant decrease in IMEP cycle-to-cycle variations can be achieved only when the initial burning rate is enhanced with PJC device for example. The cycle-to-cycle combustion variations (CA01, PMax, IMEP) are not improved in the same proportions.
The PJC is a firing device which meets the objective of repeatable ultra-lean mixture ignition and development of combustion, but slightly lowers the global efficiency due to the increase of heat losses for high load running points.
Authors
Citation
Robinet, C., Andrzejewski, J., and Higelin, P., "Cycle-to-Cycle Variation Study of an SI Engine Fired by Spark Plug and a Non Conventional Device," SAE Technical Paper 972986, 1997, https://doi.org/10.4271/972986.Also In
References
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