IDLE SPEED CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

C-3026 D-2,572 An idle speed control device of compact size has a miniature DC motor operably connected by a speed reducing gear train to drive a threaded shaft to adjust the position of a throttle stop for an engine throttle valve lever to thereby control engine idle speed wherein the throttle stop is initially moved by the throttle lever to close a normally open switch within the device to enable motor operation only during idle and wherein the threaded shaft disengages from the gear train when the throttle stop reaches a maximum throttle valve opening position while the motor continues to run and re-engages when the motor reverses.