CENTRIFUGAL RPM GOVERNOR FOR FUEL INJECTED INTERNAL COMBUSTION ENGINES

In a centrifugal rpm regulator for fuel injected internal combustion engines, a fuel quantity control rod is provided which receives the forces associated with the displacements of an adapter sleeve which in turn is displaceable under the influence of centrifugal flyweights and as a function of engine rpm. The control rod is limited in the direction of increasing fuel supply by a structure including a first and second cam plate, an intermediate lever, a lever including a cam follower member, and a control apparatus. The first cam plate includes a cam sector with the cam follower member being adapted to abut the cam sector whenever the maximum fuel supply quantity corresponding to a particular rpm is delivered. The second cam plate is mounted with the first cam plate to rotate independently thereof and to also operatively engage with the cam follower member. The control apparatus functions in dependence on the temperature of an operating medium for controlling the second cam plate so that a starting excess fuel quantity is delivered only until a particular operating medium temperature is reached.