EXHAUST VALVE TIMING CONTROL RESPONSIVE TO ENGINE KNOCK AND TORQUE

摘要

A method of operating a two-stroke cycle internal cycle internal engine having at least one exhaust port communicating with each combustion chamber of the engine and an exhaust valve operably associated with at least one said exhaust port to vary the timing of the opening of the exhaust port, the method comprising retarding the timing of the opening of the exhaust port in response to the detection of knock occurring in the combustion chamber of the engine associated therewith. Also disclosed and claimed is a method of engine operation comprising briefly retarding the timing of the opening of the exhaust port in response to a signal indicating a momentary drop in engine torque is required.