This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Analysis of Flame Propagation and Low-Temperature Reactions Under a Knocking Condition in a SI Engine Based on Spectroscopic Measurements
Published October 01, 2007 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Autumn Conference
Knocking in a spark ignition engine is a phenomenon that is influenced in complex ways by flame propagation and autoignition of the unburned end gas. In this study, a spectroscopic method was used to analyze how the degree of flame propagation influences the autoignition characteristics of the unburned end gas. The results revealed that low-temperature oxidation reactions have a governing influence on autoignition to the extent that the flame front has not progressed much under a condition where a cool flame occurs.