| 摘要 |
PROBLEM TO BE SOLVED: To improve quality and productivity, reduce the weight and cost of an intake manifold with an intake passage change-over valve while effectively using all of a plurality of synthetic resin blocks into which an intake manifold is divided. SOLUTION: The intake manifold M is divided into a plurality of synthetic resin blocks Ma, Mm, Mb. A drive shaft 18 of the intake air passage change-over valve 7 and a valve element 8 are attached in one block Mm out of the plurality of blocks Ma, Mm, Mb in such a manner that assembly of the same is completed in the block Mm, and other blocks Ma, Mb are welded on the block Mm. COPYRIGHT: (C)2010,JPO&INPIT |
