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 CONNECTED TO CONTROL THE OUTPUT OF THE DEVICE, A FIRST ACTUATOR 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 ACTUATOR 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, SAID CAM BEING POSITIONED BETWEEN SAID FIRST AND SECOND ACTUATORS AND ADAPTED FOR LONGITUDINAL MOVEMENT, SHAFT MEANS DIRECTLY INTERCONNECTING SAID ACTUATORS AND SAID CAM, SAID CAM, SHAFT INTERCONNECTING MEANS AND ACTUATORS BEING CONSTRUCTED AND ARRANGED FOR JOINT LINEAR RECIPROCATION, WHEREBY SAID CAM IS MOVED TO AN EQUILIBRIUM POSITION OF THE METERING FORCES EXERTED BY SAID ACTUATORS.