发明名称 |
TERMINAL STRUCTURE OF HIGH-PRESSURE FUEL PIPE FOR DIRECT INJECTION ENGINE |
摘要 |
Provided is a terminal structure of a high-pressure fuel pipe for a direct injection engine which can prevent stress concentration to a brazed portion between a pipe and a connection part effectively. In the terminal structure of a high-pressure fuel pipe for a direct injection engine where a connection head is brazed to an end of a fuel pipe, the end of the fuel pipe continued to a fuel pipe insertion portion of the connection head is provided with a drawn portion, an outer diameter D1 of the drawn portion to a fuel pipe diameter D satisfies 0.8D ‰¤ D1 ‰¤ 0.9D, and a length L1 of the drawn portion having the outer diameter D1 in a pipe-axial direction from an end of the fuel pipe insertion portion satisfies L1 ‰¥ 0.06D. |
申请公布号 |
EP2821631(A4) |
申请公布日期 |
2015.11.04 |
申请号 |
EP20130754886 |
申请日期 |
2013.02.07 |
申请人 |
USUI KOKUSAI SANGYO KAISHA LTD. |
发明人 |
SEINO IICHIRO;KURATA EIJI |
分类号 |
F02M55/00;F02M55/02;F16L19/025 |
主分类号 |
F02M55/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|