Knock diagnostic module for engine, analyzes knock count of specific cylinder and selectively generates excessive knock signal when knock count exceeds threshold value

摘要

The module receives a cylinder firing signal corresponding to one of the cylinders (208-1-208-8) in engine (202) and increments sample count. The module selectively increments a knock count based on a knock detection signal that corresponds to cylinder firing signal. A knock analysis module analyses knock count of specific cylinder when sample count of cylinder reaches a specific value and selectively generates excessive knock signals when the knock count exceeds threshold value. A remedial action module selectively performs remedial action based on excessive knock signal. An independent claim is included for knock detection method for engine.