Title:
VARIABLE-CAPACITY TURBINE AND SUPERCHARGER
Document Type and Number:
WIPO Patent Application WO/2022/158165
Kind Code:
A1
Abstract:
This variable-capacity turbine is provided with a variable nozzle unit for adjusting the flow of exhaust gas in an exhaust gas passage for guiding exhaust gas to a turbine rotor. The variable nozzle unit includes a plurality of nozzle vanes that are arranged, in the exhaust gas passage, at intervals in the circumferential direction of the turbine rotor. When the exhaust gas passage is divided into a tongue-part-vicinity area located in the vicinity of a tongue part of a scroll flow passage and a tongue-part-distant area other than the tongue-part-vicinity area, the plurality of nozzle vanes include at least one tongue-part-vicinity nozzle vane located in the tongue-part-vicinity area and at least one tongue-part-distant nozzle vane located in the tongue-part-distant area, and at least one tongue-part-vicinity nozzle vane has, at the front end and/or the back end of the tongue-part-vicinity nozzle vane, a notched portion that is cut out to a greater extent than the front end or the back end of the tongue-part-distant nozzle vane.
Inventors:
TANAKA TOSHIMITSU (JP)
GUPTA BIPIN (JP)
TANIGUCHI NAO (JP)
GUPTA BIPIN (JP)
TANIGUCHI NAO (JP)
Application Number:
PCT/JP2021/045822
Publication Date:
July 28, 2022
Filing Date:
December 13, 2021
Export Citation:
Assignee:
MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD (JP)
International Classes:
F02B37/24; F01D17/16; F02C3/05
Domestic Patent References:
| WO2014128898A1 | 2014-08-28 |
Foreign References:
| JP2004019663A | 2004-01-22 | |||
| JP2013137017A | 2013-07-11 | |||
| JPH11257082A | 1999-09-21 | |||
| JP2000337158A | 2000-12-05 | |||
| US7255530B2 | 2007-08-14 | |||
| JP2017025923A | 2017-02-02 |
Attorney, Agent or Firm:
SSIP PATENT ATTORNEY CORPORATION (JP)
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