Patent ID: 6470859
Filing Date: 2002-10-29
Classification: F02M

Abstract:
In a fuel delivery rail assembly for an internal combustion engine comprising an elongate conduit having a longitudinal fuel passage therein, a fuel inlet pipe fixed to an end or a side of said conduit, and a plurality of sockets vertically fixed to said conduit, adapted to communicate with said fuel passage and so formed as to receive tips of fuel injectors at their open ends, characterized in that:outer walls of said conduit include at least one flat or arcuate flexible first absorbing surface; said at least one first absorbing surface is smoothly and integrally connected to at least one arcuate second absorbing surface; said at least one first absorbing surface or said at least one second absorbing surface faces fuel inlet ports of said sockets; and wherein said at least one second absorbing surface comprises an arcuate flexible end cap fixed to a longitudinal end of said conduit; whereby fuel pressure pulsations and shock waves are reduced by abrupt enlargements of fuel passages and bendings of said absorbing surfaces.