2015 Volume 57 Issue 181 Pages 199-205
The control of knock is necessary for further improvement of thermal efficiency of gasoline engines. Knock is considered as the pressure oscillation caused by autoignition in end gas before the completion of flame propagation. In order to control the knock, it is important to understand these successive phenomena well. This article shows authors' recent investigations of knock phenomena using a constant volume vessel. The constant volume vessel was used in order to clarify fundamentally how flame propagation and chemical reactions of the end gas contribute the knock phenomena. The influences of mixture temperature on flame propagation and knock phenomena and knocking process were described in this article.
