The engine’s knock sensor (or sensors) detects preignition and detonation, potentially damaging forms of abnormal combustion. Though full-blown knocking and pinging are audible to the human ear ...

While knocking is no longer as widespread a problem thanks to the current state of anti-knock sensor technology, it can be an issue for vehicles with gasoline direct-injection engines.

In response to these reports of malfunctioning engines dating back to 2010, Hyundai-Kia has developed a software update they call a knock sensor detection system.

This article discusses how an acoustic knock sensor works with a pre-chamber ignition and evaluates different cylinder pressure-based knock detection strategies and proposes a method that eliminates ...