| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a common rail designed to enhance the durability of the flow channel of a main pipe rail and a branching hole, while reinforcing the strength of internal pressure fatigue withholding strength of the branching hole portion. <P>SOLUTION: In the common rail for diesel engine composed of a main pipe rail having a flow channel along its axis core with the branching hole formed so as to link with the flow channel, auto-frettage processing is implemented on the entire internal peripheral surface and the branching hope portion, after stress concentration near the branching hole is relaxed. <P>COPYRIGHT: (C)2004,JPO |
