Fuel injection pump timing and metering arrangement

Claim 1

A fuel injection pump for an internal combustion engine comprising, a pump housing defining a cylindrical bore and a plunger received in said bore defining a fuel injection pumping chamber and a fuel supply chamber, means simultaneously reciprocating and rotating said plunger to define a predetermined angular motion of the plunger during fuel injection, said housing and said plunger defining a fuel supply passage and a fuel discharge passage in communication with said pumping chamber, a control sleeve in said supply chamber receiving said plunger, said sleeve defining a sleeve edge and a spill groove on the inner periphery of said sleeve, said plunger defining passage means and a spill port connected to said pumping chamber and selectively and alternatively passing over said sleeve edge and said spill groove to control fuel injection, said control sleeve defining a horizontal peripheral timing slot and a diagonal peripheral metering slot on the external periphery of said control sleeve with said diagonal slot defining a predetermined constant relationship to the angular motion of said plunger, a speed responsive device, a timing control linkage connected between said speed responsive device and said control sleeve for engaging said sleeve in said timing slot for controlling the timing of said fuel injection pump, a fuel quantity control linkage connected between said speed responsive device and said control sleeve for engaging said sleeve in said metering slot for controlling the metering of said fuel injection pump.