Patent ID: 6354273
Filing Date: 2002-03-12
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 first absorbing surface is smoothly and integrally connected to at least one arcuate second absorbing surface; and said first absorbing surface or said second absorbing surface faces fuel inlet ports of said sockets; whereby fuel pressure pulsations and shock waves are reduced by abrupt enlargements of fuel passages and bendings of said absorbing surfaces; and wherein said at least one flexible absorbing surface comprises a flat upper plate, and said at least one arcuate second absorbing surface comprises an arcuate side plate depending from one side of said flat upper plate.