VERFAHREN ZUM HERSTELLEN EINES KRAFTSTOFFVERTEILERS

摘要

A fuel rail (20) formed by hydroforming. The hydroforming process includes applying a seal onto a fuel tube (22), and installing fuel injector blocks (24), including fuel injector ports (28), onto the tube in desired positions. The fuel tube assembly is placed in a die assembly, and pressurized fluid is supplied to the interior of the tube. The pressurized fluid causes the tube to expand outwardly into engagement with the blocks, and to pierce holes through the tube within each of the blocks to provide fluid communication with the associated fuel injector and other ports.