Piston slap can create a knocking noise from your engine that seems very concerning at first. But you should listen to expert ...

Sound coming from your engine bay is typically very normal, as it means the engine is working and providing power to help move your vehicle. Most drivers have an idea of what their vehicle should ...

THIS is another chapter in the development of a quantitative knock-measuring apparatus. The first part of the paper describes tests in which the knock sound was picked up by a microphone located a few ...

Knock in a HCCI engine was examined by comparing subjective evaluation, recorded sound radiation from the engine, and cylinder pressure. Because HCCI combustion involved simultaneous heat release in a ...