Title:
INTAKE DUCT
Document Type and Number:
Japanese Patent JP2018168712
Kind Code:
A
Abstract:
To provide an intake duct which can change an intake path length by a simple constitution.SOLUTION: An intake duct 1 comprises: a duct main body 2 for sucking an air from the outside of a vehicle to an engine side via a suction port 20 which is opened toward a vehicle front part; an inside cylinder part 3 having an outside opening part 3o for sucking air from the outside of the vehicle, and an inside opening part 3i opened in the duct main body 2; and pivot parts (axial hole 25 and shaft part 35) arranged in the duct main body 2, and rotatably supporting the inside cylinder part 3. When traveling wind pressure is not lower than a prescribed value, the inside cylinder part 3 is arranged so that an axis Lof the inside cylinder part 3 progresses along an axis Ldirection of the duct main body 2, and rotates between a shortening position in which an intake flow passage for encapsulating at least a part of an internal space of the inside cylinder part 3 is formed in the internal space of the duct main body 2, and an elongation position which is arranged so as to block a region of the duct main body 2 at the suction port 20 side when the traveling wind pressure is lower than the prescribed value, and in which the intake flow passage is formed of the internal space of the inside cylinder part 3.SELECTED DRAWING: Figure 1
Inventors:
YAMAMOTO KAZUYA
Application Number:
JP2017064805A
Publication Date:
November 01, 2018
Filing Date:
March 29, 2017
Export Citation:
Assignee:
DAIHATSU MOTOR CO LTD
International Classes:
F02M35/10; F02B27/02
Attorney, Agent or Firm:
Hiroshi Yamano