| 摘要 |
PROBLEM TO BE SOLVED: To provide a piping waterproof connection structure enabling sufficient waterproofing of waterdrops scattered in intake air of an internal combustion engine and having high flexibility of a mounting position of piping of an intake air sensor, etc. SOLUTION: In the waterproof connection structure, a slotted opening part 14a comprising bent lower edge and a linear upper edge is provided on a partition wall 12. This prevents generation of a water screen on the whole area of the opening part 14a, so as to successfully maintain pressure transmission to an intake pressure sensor. Since the water screen is not formed on the whole area, waterdrops flied from the opening part 14a are easily discharged from the opening part 14a to the side of a surge tank. Since a connection space 14 is expanded with respect to the opening part 14a and a tip opening on the side of a pressure delivery pipe 16a, water entered to inside of the connection space 14 hardly narrows or clogs the opening part 14a and the tip opening. Therefore, this can achieve sufficient waterproofing. Moreover, since only the connection space 14, the partition wall 12 and the opening 14a are provided in a connection portion of the pressure delivery pipe 16a, this structure extremely enhances the degree of freedom of the mounting position to the surge tank. COPYRIGHT: (C)2009,JPO&INPIT
|
