Common rail and method of manufacturing same
 A structurally simple common rail is highly sealed and light weight manner. The common rail includes a thick wall pipe having a flow passage for accumulating pressure of high pressure fuel. The high pressure fuel is supplied from a high-pressure pump and distributed to an injection nozzle. The end portion of the thick wall pipe is reduced in diameter by drawing. A thread portion is formed on an outer peripheral surface of the diameter-reduced end portion. A connecting end of a piping component is connected to the end portion of the thick wall pipe by screwing a nut to the thread portion of the thick wall pipe. 
Usui Kokusai Sangyo Kaisha LImited
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F02M Y10T Y10T F16L F02M
inventional additional additional inventional inventional
Tadahiro Nobuo
Uematsu Kato