Patent ID: 6901913

Claim:
In a pressure pulsation suppressing system of a fuel piping arranged to a gasoline engine having a plurality of cylinders disposed in a V-shape or horizontal opposed shape with a pair of right and left delivery pipes for distributing fuel to each cylinder, said right and left delivery pipes being connected by a connecting pipe, a fuel pump being accommodated within a fuel tank, said fuel pump and delivery pipe being connected by a supply pipe, and each delivery pipe being a return-less type having no return circuit to said fuel tank, characterized in that: at least one section of a conduit which constitutes said delivery pipe forms a flexible absorbing surface, and an orifice portion having an orifice for damping pressure pulse wave caused by fuel injection is installed near a connection part between at least one delivery pipe and said supply pipe or said connecting pipe, wherein said orifice portion is installed on said absorbing surface.