Title:
TURBINE AND TURBOCHARGER
Document Type and Number:
WIPO Patent Application WO/2021/140569
Kind Code:
A1
Abstract:
This turbine comprises a turbine wheel that rotates about an axis O1, a turbine housing that accommodates the turbine wheel and defines an annular nozzle flow path on the outer circumferential side of the turbine wheel, and a plurality of small chord-pitch ratio nozzle vanes 6 provided with gaps therebetween in the circumferential direction of the nozzle flow path, wherein the turbine is configured such that each of the plurality of small chord-pitch ratio nozzle vanes 6 in a radial position different from that of a small chord-pitch ratio nozzle vane 6 adjacent in the circumferential direction, at positions where a hub-side wall surface that defines the nozzle flow path and the hub-side wall surface inside a shroud-side wall surface are connected. Consequently, when the pressure at a turbine inlet fluctuates greatly due to the exhaust pulsation of an engine, a moving vane incidence property can be greatly improved only through the use of the small chord-pitch ratio nozzle vanes 6, and turbine efficiency is improved in comparison to the prior art.
More Like This:
| JP2005226469 | JOINT STRUCTURAL OF COMPRESSOR IMPELLER AND SHAFT |
| JPH01232114 | COOLING DEVICE FOR SUPERCHARGED ENGINE |
| JP3149623 | STRUCTURE OF TURBOCHARGER |
Inventors:
TANIGUCHI NAO (JP)
YOSHIDA TOYOTAKA (JP)
OZAKI MAKOTO (JP)
OKA NOBUHITO (JP)
YOSHIDA TOYOTAKA (JP)
OZAKI MAKOTO (JP)
OKA NOBUHITO (JP)
Application Number:
PCT/JP2020/000185
Publication Date:
July 15, 2021
Filing Date:
January 07, 2020
Export Citation:
Assignee:
MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD (JP)
International Classes:
F02B39/00
Foreign References:
| US20180238226A1 | 2018-08-23 | |||
| JP2018123802A | 2018-08-09 | |||
| JP2018145811A | 2018-09-20 | |||
| US20140321979A1 | 2014-10-30 |
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (JP)
Download PDF: