IGNITION SYSTEM FOR MARINE PROPULSION DEVICE

摘要

A control system for an internal combustion engine, the control system receiving an input signal from an engine speed sensor, receiving an input signal from an engine knock sensor, advancing the spark timing of the internal combustion engine until a knock signal is received from the knock sensor, and, in response to receipt of a knock signal from the knock sensor, retarding the spark timing of the internal combustion engine until a knock signal is no longer received from the knock sensor and thereafter maintaining a substantially constant spark timing until the signal received from the engine speed sensor indicates a change in engine speed.