Fuel injection pump

Claim 1

A fuel injection pump for an internal combustion engine having an intake manifold, said pump comprising, in combination: (a) a fuel pump housing; (b) a fuel pump, arranged in said housing, for supplying an injectable quantity of fuel at an injectable pressure to a plurality of passive fuel injectors, said fuel pump having means for adjusting said injectable fuel quantity; (c) a casing mounted on said fuel pump housing including: (1) a cooling chamber, having an inlet and outlet to facilitate the flow of fuel therethrough; and (2) a control chamber, separated from said cooling chamber by a heat transfer wall; (d) a vacuum line connected between said intake manifold and said control chamber; (e) a pressure sensor disposed in said control chamber and connected to said vacuum line, for producing a first signal representative of the manifold pressure of the internal combustion engine; (f) an engine speed sensor for producing a second signal representative of engine speed; (g) electrical control means located in said control chamber in heat conductive relationship with said heat transfer wall, for producing an electrical control signal in dependence upon said first and second signals; (h) a mechanical governor, having a full-load stop and an intermediate lever for controlling said fuel quantity adjusting means; and (i) a stepper motor for adjusting said intermediate lever in response to said control signal.