Browse Publications Technical Papers 2018-32-0001
2018-10-30

Influence of Autoignition and Behavior of Pressure Wave on Knocking Intensity by using Multipoint Pressure Measurement and In-cylinder Visualization of the End-gas 2018-32-0001

In this study, the effect of autoignition behavior of unburned region on pressure wave formation and knock intensity were investigated. In the experiment, a single-cylinder gasoline engine capable of high-speed observation of the end gas was used. Visualization in the combustion chamber and light absorption spectroscopic measurement of the end gas were carried out, and the autoignition behavior of the unburned portion and the reaction history before autoignition were analyzed. By analyzing the multi-point pressure histories, the process of autoignition and pressure wave growth was analyzed. As a result, it was found that knocking intensity increases by autoignition and pressure wave interaction each other.

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