Ignition timing control means for internal combustion engines

摘要

Ignition timing control device for internal combustion engines, which comprises a base mounted on the engine crankcase and rotatably carrying a control disc which is co-axial with a driving shaft adapted to be driven by the engine crankshaft. The control disc carries one or more ignition signal generating units and the base carries an intake pressure responsive device which determines the position of the control disc in accordance with the engine intake pressure.