Fuel injection pump and timing control therefor

Abstract From the Canadian patent

The invention provides a fuel injection pump for an associated engine, pump plunger means providing sequential pumping strokes, means for changing the timing of the pumping strokes comprising a first cylinder, an advance piston movable in said first cylinder, means interconnecting said advance piston with said pump plunger means to advance and to retard the relative timing of the pumping strokes; a first source of fluid having a pressure correlated with engine speed a second, source of fluid having a pressure correlated with a variable engine operating condition other than speed means operatively, connected to said advance piston and responsive to said first fluid pressure and said second …