Influence of Autoignition and Pressure Wave Behavior on Knock Intensity Based on Multipoint Pressure Measurement and In-Cylinder Visualization of the End Gas

2018-32-0001

10/30/2018

Features
Event
SAE/JSAE Small Engine Technology Conference
Authors Abstract
Content
In this study, the effect of autoignition behavior in the unburned end-gas region on pressure wave formation and knock intensity was investigated. A single-cylinder gasoline engine capable of high-speed observation of the end gas was used in the experiments. Visualization in the combustion chamber and spectroscopic measurement of light absorption by the end gas were carried out to analyze autoignition behavior in the unburned end-gas portion and the reaction history before autoignition. The process of autoignition and pressure wave growth was investigated by analyzing multipoint pressure histories. As a result, it was found that knocking intensity increases through interaction between autoignition and pressure waves.
Meta TagsDetails
DOI
https://doi.org/10.4271/2018-32-0001
Pages
6
Citation
Yamashita, T., Takahata, S., Kudo, H., Izako, T. et al., "Influence of Autoignition and Pressure Wave Behavior on Knock Intensity Based on Multipoint Pressure Measurement and In-Cylinder Visualization of the End Gas," SAE Technical Paper 2018-32-0001, 2018, https://doi.org/10.4271/2018-32-0001.
Additional Details
Publisher
Published
Oct 30, 2018
Product Code
2018-32-0001
Content Type
Technical Paper
Language
English