Fuel injection pump for multicylinder internal combustion engines

Claim 1

In a fuel injection pump associated with a multicylinder internal combustion engine and being of the known type that includes (A) a rotary distributor, (B) radial pump means contained in said distributor and (C) stationary cam means operatively connected with said radial pump means to cause it to perform pressure strokes, the improvement comprising, A. a first pump unit including 1. a first radial cylinder bore provided in said distributor, 2. at least one first pump piston reciprocably disposed in said first radial cylinder bore, B. a first cam associated with said first pump piston to cause periodic inward displacement thereof upon rotation of said distributor, C. a fuel source, D. a first channel connecting said first radial cylinder bore with said fuel source, E. a first solenoid valve associated with said first channel to control the flow of fuel therethrough, F. at least one second pump unit including 1. a second radial cylinder bore provided in said distributor, said second radial cylinder bore extending spaced from said first radial cylinder bore, the axes of said first and second radial cylinder bores lying in parallel planes, 2. at least one second pump piston reciprocably disposed in said second radial cylinder bore, G. a second cam associated with said second pump piston to cause periodic inward displacement thereof upon rotation of said distributor, H. a second channel connecting said second radial cylinder bore with the same said fuel source, I. a second solenoid valve associated with said second channel to control the flow of fuel therethrough and J. means causing said first pump piston to reciprocate out-ofphase with respect to said second pump piston.