Engine control device

Claim 1

IN A CONTROL DEVICE FOR AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE MANIFOLD, A CARBURETOR CONNECTED TO SAID MANIFOLD, A THROTTLE VALVE IN SAID CARBURETOR FOR CONTROLLING THE MIXTURE OF AIR AND AN IGNITABLE FUEL BEING SUPPLIED TO SAID ENGINE BY SAID CARBURETOR, AND A DISTRIBUTOR WITH AN MOVABLE MEMBER FOR CONTROLLING THE TIMING OF THE IGNITION OF SAID FUEL IN SAID ENGINE, SAID CONTROL DEVICE INCLUDING A FLUID MOTOR MEAN RESPONSIVE TO A HIGH VACCUM IN SAID INTAKE MANIFOLD FOR SLIGHTLY OPENING SAID THROTTLE VALVE AND MOVING SAID MEMBER IN THE IGNITION RETARDING DIRECTION, SAID FLUID MOTOR MEANS BEING OPERABLE TO CAUSE MORE COMPLETE BURNING OF FUEL IN SAID ENGINE DURING DECELERATION OF SAID ENGINE WITHOUT A CORRESPONDING INCREASE IN THE POWER OUTPUT OF SAID ENGINE, THE IMPROVEMENT COMPRISING: A CONDUIT MEANS FOR COMMUNICATING SAID FLUID MOTOR MEANS WITH A SOURCE OF PRESSURIZED AIR, A VALVE MEANS IN SAID CONDUIT MEANS, SAID VALVE MEANS BEING RESPONSIVE TO THE SPEED OF SAID ENGINE WITH SAID VALVE MEANS BEING CLOSED AT ALL SPEEDS ABOVE A PRESELECTED CONTROL SPEED, SAID CONTROL SPEED BEING SLIGHTLY HIGHER THAN A PRESELECTED IDLE SPEED FOR SAID ENGINE, AND BEING OPENED AT ALL SPEEDS BELOW SAID PRESELECTED CONTROL SPEED WHEREBY SAID FLUID MOTOR MEANS ARE RENDERED INOPERATIVE WHEN SAID ENGINE SPEED IS BELOW SAID CONTROL SPEED, A FOOT OPERATED PEDAL MEMBER AND A ROD CONNECTING SAID PEDAL MEMBER WITH SAID THROTTLE VALVE, MOVEMENT OF SAID ROD BY SAID PEDAL MEMBER IN A FIRST DIRECTION OPENING SAID THROTTLE VALVE TO ACCELERATE SAID ENGINE AND RELEASE OF SAID PEDAL MEMBER ALLOWING SAID ROD TO BE MOVE BY A SPRING MEANS IN A SECOND DIRECTION CLOSING SAID THROTTLE VALVE TO DECELERATE SAID ENGINE, AND A SECOND VALVE MEANS CLOSED WHEN SAID ROD IS MOVED IN SAID FIRST DIRECTION AND OPNE WHEN SAID ROD IS MOVED IN SAID SECOND DIRECTION TO THE THROTTLE VALVE CLOSED POSITION OF SAID ROD, SAID SECOND VALVE MEANS BEING POSITIONED BETWEEN SAID MANIFOLD AND SAID FLUID MOTOR MEANS WHEREBY SAID MOTOR MEANS IS INOPERATIVE WHEN SAID SECOND VLAVE MEANS IS CLOSED, SAID SECOND VALVE MEANS BEING MOUNTED ON SAID ROD AND A FIRST FLEXIBLE CONDUIT CONNECTING SAID MANIFOLD WITH SAID SECOND VALVE MEANS AND A SECOND FLEXIBLE CONDUIT CONNECTING SAID SECOND VALVE MEANS WITH SAID FLUID MOTOR MEANS