HIGH PRESSURE FUEL RAIL APPARATUS FOR GDI ENGINE AND MANUFACTURING METHOD FOR THE SAME

摘要

The purpose of the present invention is to provide a high pressure fuel rail apparatus for an engine directly spraying gasoline and a method for manufacturing the same capable of reducing costs and weight by omitting the process of brazing with the high temperature by applying an AI extruded material with the high temperature as the material of a fuel rail instead of the prior SUS material and performing the high speed cutting after a main pipe and a fixing bracket extrude. The high pressure fuel rail apparatus for an engine directly spraying gasoline according to the present invention to achieve the purpose comprises: a main pipe making fuel to flow therein and having both end parts mounted with an inlet fitting and an end plug; and a fixing unit integrally formed in the main pipe and fixing the main pipe in the upper end of the engine by using a bolt, wherein the main pipe and the fixing part are made of an aluminum alloy material. The present invention can reduce the unit cost of material by applying an aluminum alloy rather than the prior SUS material, and reduce costs and make a vehicle lighter by integrally forming the fixing unit in the main pipe.