The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 2019
Filed:
Dec. 27, 2012
Mitsubishi Heavy Industries Engine & Turbocharger, Ltd., Sagamihara-shi, Kanagawa, JP;
Takao Yokoyama, Tokyo, JP;
Masaki Tojo, Tokyo, JP;
Satomi Nagae, Tokyo, JP;
Masaki Osako, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara-Shi, Kanagawa, JP;
Abstract
An object is to is to reduce a leakage flow by reducing a clearance between an end surface of a nozzle vane, forming a variable nozzle mechanism of a variable geometry turbocharger, and a wall surface facing the end surface, and prevent the nozzle vane from being stuck due to contact of the end surface. A variable geometry turbocharger includes a nozzle shaftwhich protrudes on one of the both end surfacesof a nozzle vaneand rotatably supports the nozzle vane, a shaft holein which the nozzle shaftfits with a gap in between, a distal end surfaceof the nozzle vane with which a clearance is reduced when the nozzle vanewhich has received exhaust-gas pressure is inclined toward an inner diameter side due to a fitting gap formed between the shaft holeand the nozzle shaftfit to each other, the clearance being formed between the distal end surfaceand a wall surfaceof another one of the parallel walls, and a clearance reduction promotion portionwhich promotes reduction of the clearance with an increased inclination angle of the distal end surfaceor an increased exhaust-gas-affected surface of the nozzle vane