(under subclass 339.1) Subject matter comprising a combustion chamber, a combustible mixture, a piston traveling in the chamber, a rotatable crankshaft, and means creating a short pulse or flow of electric current for causing the combustible mixture to burn in the combustion chamber wherein the minimum output shaft operating speed is adjusted by varying the point of piston travel or crankshaft rotation at which the short pulse or flow of electric current occurs.
SEE OR SEARCH THIS CLASS, SUBCLASS:
406.19+, for an internal combustion engine spark ignition timing control adjusted in response to sensed engine shaft output speed.
