Fuel injection control mechanism

Claim 1

IN A CONTROL SYSTEM FOR A FUEL METERING DEVICE ADAPTED TO SUPPLY FUEL TO AN INTERNAL COMBUSTION ENGINE HAVING AN AIR-INTAKE MANIFOLD, THE COMBINATION OF A MOVABLE CAM FOLLOWER CONNECTED TO CONTROL THE OUTPUT OF THE DEVICE, A MOVABLE CAM ENGAGED BY SAID CAM FOLLOWER, SAID MOVABLE CAM HAVING A CAM SURFACE INCLUDING MEANS DEFINING A CUT-OUT PORTION FOR COMPLETELY CUTTING OFF THE FUEL SUPPLIED BY SAID DEVICE WHEN SAID CAM FOLLOWER IS ENGAGED WITH SAID CUTOUT PORTION, A FIRST SERVOMOTOR CONNECTED TO THE AIR-INTAKE MANIFOLD OF THE ENGINE AND TO SAID CAM FOR EXERTING A METERING FORCE THEREON FOR MOVING SAID CAM IN ACCORDANCE WITH CHANGES IN PRESSURE WITHIN THE AIR-INTAKE MANIFOLD, A SECOND REFERENCE PRESSURE SERVOMOTOR ALSO CONNECTED TO SAID CAM FOR EXERTING A METERING FORCE THEREON TO ADJUST THE POSITION OF SAID CAM IN ACCORDANCE WITH CHANGES IN AMBIENT PRESSURE, A CONNECTING SHAFT DIRECTLY INTERCONNECTING BOTH SAID SERVOMOTORS WHEREBY SAID CAM IS MOVED TO AN EQUILIBRIUM POSITION.