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:
Nov. 02, 2021
Filed:
Mar. 24, 2017
Mitsubishi Heavy Industries Engine & Turbocharger, Ltd., Sagamihara, JP;
Toyotaka Yoshida, Tokyo, JP;
Bipin Gupta, Tokyo, JP;
Yosuke Dammoto, Tokyo, JP;
Yoji Akiyama, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara, JP;
Abstract
Provided is a casingfor an exhaust turbocharger turbine, configured so as to house a turbine rotorto be driven by exhaust gas and form a spiral scrollserving as a path for supplying the exhaust gas to the turbine rotor, wherein the scrollincludes a first regionextending from a spiral origin positionto a predetermined angle θ and a second regionextending from the predetermined angle θ to a spiral end position, with the surface area of an interior wall thereof decreasing from the spiral origin positiontoward the spiral end position, and the interior wall at the first regionhas a lower surface roughness than that at the second region