Title:
消音装置
Document Type and Number:
Japanese Patent JP6646033
Kind Code:
B2
Abstract:
To provide a muffling device that can reduce noise sufficiently, save a space and suppress degradation in ventilation resistance of an intake passage.MEANS: A muffling device includes: a first resonant chamber with a predetermined volume; and a first communication pipe for communicating between the first resonant chamber and an intake passage for an internal combustion engine. A second communication pipe that is discontinuously formed from the communication pipe and has an opening part and a second resonant chamber that is formed in one end of the second communication pipe are formed inside the first resonant chamber.SELECTED DRAWING: Figure 1
Inventors:
Kwon Hung Kwon
Application Number:
JP2017238052A
Publication Date:
February 14, 2020
Filing Date:
December 12, 2017
Export Citation:
Assignee:
Roki inc.
International Classes:
F02M35/12; F02B27/00; F02B27/02
Domestic Patent References:
| JP2007016652A | ||||
| JP8338330A | ||||
| JP9021364A | ||||
| JP7034990A | ||||
| JP2019643A | ||||
| JP61123864U | ||||
| JP58114871U | ||||
| JP57033234U |
Foreign References:
| US20130327584 | ||||
| US5349141 | ||||
| US5647314 | ||||
| DE102009047809A1 |
Attorney, Agent or Firm:
Patent Business Corporation Intect International Patent Office
Yoshinori Ishibashi
Yoshinori Ishibashi