| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To strongly weld an intake manifold and an intake air introducing pipe together in the case that the intake manifold and intake introducing pipe are formed separately from each other and each moldability is improved. <P>SOLUTION: An intake pipe part connected to an intake port and a surge tank part 14 are integrally formed by a resin to compose the intake manifold 10. The intake air introducing pipe 11 bent and extended upward from the introducing opening 19 of the surge tank part 14 is formed by resin. Flanges 21, 33 are formed respectively on the periphery of the introducing opening 19 of the surge tank part 14 and the opening periphery of the intake air introducing pipe 11, and first protrusion parts 21a, 33a are projected on parts opposed to both the flanges 21, 33 so as to surround the opening. Joint parts on the tip sides of the first protrusion parts 21a, 33a are joined by hot plate welding. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
