Patent ID: 6925989

Claim:
A fuel delivery system for an internal combustion engine, said system having fuel pressure damping and comprising: a fuel feed line; a fuel rail defining a fuel passageway therein, said rail being connected to said feed line to receive fuel from said feed line into said passageway; a plurality of fuel injectors connected to said rail to receive fuel from said passageway to be delivered to the engine; a compliance member located within said system, said compliant member decreasing the bulk modulus of said system; at least a portion of said system defining a critical element of said system, said critical element significantly contributing to a resonant mode of said system during operation wherein a pressure pulsation occurs within said system; and a fluid flow restrictor located within said system, said restrictor being located in relation to said critical element whereby the distance (C) from said restrictor to an end of said critical element is generally defined by the equation D=(1−E)/0.00226, where E is the percent optimal benefit gained.