Patent ID: 7188610
Filing Date: 2007-03-13
Classification: F02D,F02M,F16K

Abstract:
1. A pressure valve assembly for a no-return loop fuel delivery system having a fuel injector for operatively flowing fuel into a combustion engine and a fuel pump for flowing pressurized fuel to the injector through the pressure valve assembly, the pressure valve assembly comprising: a body; a pump-side port carried by the body; an engine-side port carried by the body, the pump-side port being positioned between the fuel pump and the engine-side port, and the engine-side port being positioned between the pump-side port and the fuel injector; a circumferentially continuous valve seat carried by the body and disposed between the engine-side and pump-side ports; and a valve head having a diaphragm biased sealingly against the valve seat when the valve assembly is in a closed position, the valve head diaphragm has a first area exposed to the pump-side port and a second area separated from the first area by the valve seat and exposed to the engine-side port while the valve head diaphragm is sealed on the valve seat.