Fuel injection pump for internal combustion engines

Claim 1

In a fuel injection pump for internal combustion engines having a fuel supply, a rotating distributor having a jacket face, a pump housing, at least one pump piston provided in said pump housing, a pump work chamber partially defined by said pump piston and said pump housing, a fuel supply pump producing a fuel supply output for said pump work chamber, a fuel output quantity being produced by said pump work chamber, a fuel supply conduit having a pressure control valve associated with said fuel supply and said pump work chamber, and at least one control of said supply conduit provided in the jacket face of said rotating distributor to allow fuel to flow to said pump work chamber from said supply conduit, the improvement comprising a fuel supply reservoir assembly including a reservoir chamber downstream of said pressure control valve and having a relief conduit to said fuel supply for producing a working pressure, said assembly disposed in said pump housing between said supply conduit and said rotating distributor, whereby a pressure is created in said fuel supply reservoir by said fuel supply, said working pressure being greater than the pressure required by the re-set of said pump piston, and a spring-biased movable element in said reservoir chamber which is continually pressure relieved and defines an extreme position in which said relief conduit to said fuel supply is opened by said movable element assuming said extreme position against said spring bias, whereby fuel can flow out of said extreme reservoir chamber.