Title:
VARIABLE CAPACITY TURBINE AND SUPERCHARGER
Document Type and Number:
WIPO Patent Application WO/2022/158167
Kind Code:
A1
Abstract:
The present invention improves efficiency of a turbine in low flow rate states. A variable capacity turbine includes: a turbine rotor; a scroll channel forming portion that forms a scroll channel; an exhaust gas channel forming portion that forms an exhaust gas channel for guiding exhaust gas from the scroll channel to the turbine rotor; and a variable nozzle unit including a plurality of nozzle vanes (6) that are disposed in the exhaust gas channel and that are each configured pivotably about the center of rotation thereof. The exhaust gas channel forming portion includes: a first plate-like member (41) that has an annular first plate portion (43); and a second plate-like member that has an annular second plate portion that defines the exhaust gas channel between the first plate portion and the second plate portion, the second plate portion being disposed closer to a turbine outlet side than the first plate portion in the axial direction of the turbine rotor. In the first plate-like member, at least one groove portion (7) is formed on a hub-side channel face of the first plate portion that faces the exhaust gas channel, the groove portion (7) extending from an inner-circumferential edge of the first plate portion to an outer-circumferential side.
Inventors:
GUPTA BIPIN (JP)
YOSHIDA TOYOTAKA (JP)
NAKAHARA YUYA (JP)
DAMMOTO YOSUKE (JP)
AKIYAMA YOUJI (JP)
YOSHIDA TOYOTAKA (JP)
NAKAHARA YUYA (JP)
DAMMOTO YOSUKE (JP)
AKIYAMA YOUJI (JP)
Application Number:
PCT/JP2021/045835
Publication Date:
July 28, 2022
Filing Date:
December 13, 2021
Export Citation:
Assignee:
MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD (JP)
International Classes:
F01D25/24; F01D17/16; F02B37/24; F02B39/00
Foreign References:
| JP2020165374A | 2020-10-08 | |||
| US20160146100A1 | 2016-05-26 | |||
| JP2005299660A | 2005-10-27 |
Attorney, Agent or Firm:
SSIP PATENT ATTORNEY CORPORATION (JP)
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