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Title:
EXHAUST-FLOW-RATE CONTROL VALVE, AND TWO-STAGE SUPERCHARGING SYSTEM PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2016/157363
Kind Code:
A1
Abstract:
This exhaust-flow-rate control valve 1 for controlling the flow rate of exhaust gas flowing through an exhaust flow path is provided with: a valve rod 2; a flat plate-like valve body 3 which has the valve rod 2 as the axis thereof, and rotates therearound; and a cylindrical valve housing 4 in which a portion of the exhaust flow path is demarcated. The valve housing 4 has, formed in the inner circumferential surface, valve seat surfaces 41 which extend along a direction intersecting the axial direction of the exhaust flow path, and which are in contact with outer circumferential parts 31 of the valve body 3 in a valve-closed state in which the opening amount of the valve body 3 is 0 degrees, and a flow path surface 42 which extends along the axial direction of the exhaust flow path, and which demarcates, in conjunction with the outer circumferential parts 31 of the valve body 3, passage regions R through which the exhaust gas passes in a valve-open state in which the opening amount of the valve body 3 is greater than 0 degrees. The passage regions R through which the exhaust gas passes are formed so as to gradually increase from a state in which the valve body 3 is fully closed to a prescribed valve-open state in which the clearance between the valve body 3 and ends 42b of the flow path surface 42 is smallest.

Inventors:
AN, Byeongil (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
SUZUKI, Hiroshi (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
Application Number:
JP2015/059933
Publication Date:
October 06, 2016
Filing Date:
March 30, 2015
Export Citation:
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Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (16-5, Konan 2-chome Minato-k, Tokyo 15, 〒1088215, JP)
International Classes:
F02B37/18; F02D9/04; F02D9/10
Domestic Patent References:
WO2009069240A12009-06-04
Foreign References:
JP2007505257A2007-03-08
JP2014231804A2014-12-11
JPH05296067A1993-11-09
Other References:
See also references of EP 3279443A4
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (Mita 43MT Building 13th Floor, 13-16 Mita 3-Chome, Minato-k, Tokyo 73, 〒1080073, JP)
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