INTAKE DUCT,申请号JP20110278669-传众专利搜索

INTAKE DUCT

申请公布号：JP2013130085(A)

申请号：JP20110278669

申请日期：2011.12.20

申请公布日期：2013.07.04

申请人：

DAIHATSU MOTOR CO LTD

发明人：ONO JUNYA

分类号：F02M35/10

主分类号：F02M35/10

摘要：PROBLEM TO BE SOLVED: To provide an intake duct having a double pipe structure capable of further suppressing a temperature rise of intake air compared with an intake duct having a conventional double pipe structure.SOLUTION: The intake duct is provided with a double pipe structure 10 including an inner pipe 4 and an outer pipe 6 provided outside the inner pipe 4 through a space 5 with the upstream end between the inner pipe 4 and the outer pipe 6 which is opened. The outer pipe 6 has a communicating hole 11 allowing the inside to communicate with the outside, and the outer pipe 6 is curved toward the inner pipe 4 in the vicinity of the upstream side of the communicating hole 11, whereby the flow passage sectional area of air flowing in the space is narrowed. The inner pipe 4 has a communicating hole 13 allowing the inside to communicate with a portion of the outside where the flow passage sectional area of air is narrowed.