Investigation of Cyclic Variation of IMEP Under Lean Burn Operation in Spark-Ignition Engine

972830

10/01/1997

Event
International Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
In this study, we investigated the relationship of indicated mean effective pressure (IMEP) for a spark ignition engine under lean combustion with the cyclic variation of mass fraction burned by measuring the energy release from the spark plug, intensity of the light emmision from the flame and the cylinder pressure at the same time. In order to minimized an error in the initial and late combustion stages of the mass fraction burned to be obtained by cylinder pressure, spark plug energy and intensity of light emission were measured. As a result, it was found that there are three main couses of cyclic variation of IMEP. These consist of the burning speed during the initial stage of combustion, variation in the total mass fraction burned, and variation of the late burning during the late expantion stroke. Thus, we determined that there is a favorable interrelatonship between the IMEPs and the corrected mass fraction burned.
Meta TagsDetails
DOI
https://doi.org/10.4271/972830
Pages
12
Citation
Ishii, K., Sasaki, T., Urata, Y., Yoshida, K. et al., "Investigation of Cyclic Variation of IMEP Under Lean Burn Operation in Spark-Ignition Engine," SAE Technical Paper 972830, 1997, https://doi.org/10.4271/972830.
Additional Details
Publisher
Published
Oct 1, 1997
Product Code
972830
Content Type
Technical Paper
Language
English