Fuel injection pump for internal combustion engines

Claim 1

A fuel injection pump for internal combustion engines, having a plurality of pump elements disposed in line in a pump housing and driven by a common camshaft, each having one pump piston and one pump cylinder and defining a pump work chamber, a control slide axially displaceable on each pump piston and controlling at least one control opening that discharges into the jacket face of the pump piston and communicates with a central blind bore of the pump piston that is open toward the pump work chamber, a suction chamber that surrounds the individual control slides and is defined by the pump housing and has an inlet side and outlet side through which fuel flows at low pressure, a governor rod which is provided for simultaneously rotating each of said pump pistons for controlling the quantity of fuel supply, and a rotary shaft which is provided for simultaneously actuating all the control slides for controlling the onset and end of fuel supply, said rotary shaft being supported in the pump housing and provided with adjustable driver tangs, a partial suction chamber (8) arranged to surround each said control slide (9) and discharge on said outflow side in a common main suction chamber (10), each said partial suction chamber (8) being provided with a defined partial inflow conduit (39) through which the same amount of fuel quantity is metered to each partial suction chamber (8) under the influence of a pressure drop generated by the partial inflow conduit (39), said rotary shaft (12) is extended through the suction chamber (10) and is supported at its ends in said pump housing (1) in bearing plates (11), said pump housing includes at least one inflow conduit (33) arranged to extend parallel to said rotary shaft (12), and said partial inflow conduits (39) branch off therefrom to said partial suction chambers (8).