Engine Knock Detection Methods for Spark Ignition and Prechamber Combustion Systems in a High-Performance Gasoline Direct Injection Engine

Knock has historically been one of the main limitations on spark ignition (SI) engine compression ratio and hence efficiency. The trend to downsizing or rightsizing in recent years, driven by ever-reducing carbon dioxide (CO2) targets, has increased the relevance of the knock limit for typical engine operating conditions. Even for scenarios where an engine is run on carbon-neutral fuel, thermal ef…