VARIABLE-GEOMETRY TURBOCHARGER

WIPO Patent Application WO/2022/224659

A1

This variable-geometry turbocharger comprises a turbine rotor, a housing that houses the turbine rotor, and a variable nozzle unit that is housed within the housing. The variable nozzle unit comprises nozzle vanes that are positioned in the flow path of a gas that is introduced to the turbine rotor, a nozzle ring that rotatably supports the nozzle vanes, and a driving unit that is located on the opposite side from the nozzle vanes with the nozzle ring interposed therebetween, and causes the nozzle vanes to rotate. The housing comprises a driving chamber that houses the driving unit, and a fluid flow passage that is in communication with the interior of the driving chamber. The driving chamber comprises an inner peripheral facing surface that faces an outer peripheral section of the driving unit, and the surface roughness of a flow passage surface of the fluid flow passage is greater than the surface roughness of at least a region of the inner peripheral facing surface, said region being connected to the fluid flow passage.

JP2020186649	IMPELLER FOR CENTRIFUGAL COMPRESSOR, CENTRIFUGAL COMPRESSOR AND TURBO CHARGER
JP2013511661	Supercharger
JP2011122539	SUPERCHARGER

SHIMIZU NAOTOSHI (JP)
IKEDA KENGO (JP)
ASAKAWA TAKAO (JP)
SHIBAYAMA HAYATO (JP)
SEGAWA KENICHI (JP)
MIYAO RYOSUKE (JP)
UEDA TAKAFUMI (JP)

PCT/JP2022/012684

October 27, 2022

March 18, 2022

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IHI CORP (JP)

F02B39/00; F01D17/16; F01D25/24; F01D25/32; F02B37/24

WO2021002056A1

2021-01-07

JP2009074492A	2009-04-09
JP2009180110A	2009-08-13
JP2009228450A	2009-10-08
JP2012102660A	2012-05-31
JP2015063944A	2015-04-09
JP2017089241A	2017-05-25
JP2005331410A	2005-12-02
JP2006257249A	2006-09-28

HASEGAWA Yoshiki et al. (JP)

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