c1731006c4 Interactions of flame propagation, auto-ignition and pressure wave during knocking combustion Combustion in SI Engines Flame Development & Propagation Combustion Process Characterization Flame-development angle, d: crank angle interval between spark discharge and the time when a Important.!About difference between knocking and detonation pdf is Not Asked Yet ? . Please ASK FOR difference between knocking and detonation pdf BY CLICK HERE.Our Team/forum members WHAT IS DETONATION? Detonation (also called "spark knock") is an erratic form of combustion that can cause head gasket failure as well as other engine damage. What is Detonation in Engine? . Detonation, or engine knock, . What is Detonation in Engine? Difference between CI and SI engine .