Title:
MUFFLER
Document Type and Number:
WIPO Patent Application WO/2017/126127
Kind Code:
A1
Abstract:
A first valve device and a second valve device have valve bodies, support bodies, and maintenance mechanisms. The maintenance mechanisms apply to the valve bodies, external force for maintaining the valve bodies at closed positions against the pressure of exhaust gas flowing through exhaust gas flow passages. The maintenance mechanisms of the first valve device and the second valve device are configured so that, at the start of the opening of the valve bodies, different loads will act on the valve bodies in the closure direction thereof. The maintenance mechanism of the first valve device and/or the second valve device is a maintenance mechanism of a first type configured so that a load acting on the valve body in the closure direction will be highest at the start of the opening of the valve body.
Inventors:
SHIRAI YOSHITERU (JP)
MATSUI SHUNSUKE (JP)
HIGASHINO TSUNEYUKI (JP)
MATSUI SHUNSUKE (JP)
HIGASHINO TSUNEYUKI (JP)
Application Number:
PCT/JP2016/051923
Publication Date:
July 27, 2017
Filing Date:
January 22, 2016
Export Citation:
Assignee:
FUTABA IND CO LTD (JP)
International Classes:
F01N1/08; F01N13/08
Foreign References:
| JPH1181977A | 1999-03-26 | |||
| JP2013174131A | 2013-09-05 | |||
| JP2012189020A | 2012-10-04 |
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL PATENT FIRM (JP)
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