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1. (WO2018123045) TURBINE AND TURBOCHARGER

Pub. No.:    WO/2018/123045    International Application No.:    PCT/JP2016/089175
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 29 00:59:59 CET 2016
IPC: F02B 39/00
F01D 5/12
Applicants: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
三菱重工エンジン&ターボチャージャ株式会社
Inventors: YOSHIDA, Toyotaka
吉田 豊隆
OZAKI, Makoto
尾▲崎▼ 誠
YOKOYAMA, Takao
横山 隆雄
Title: TURBINE AND TURBOCHARGER
Abstract:
A scroll part of a turbine housing is configured such that a concave distribution is included in at least part of a first graph of which the horizontal axis is an angular position θ in the circumferential direction of the scroll part and the vertical axis is the ratio A/R of a flow channel cross-sectional area A relative to a distance R, where A is the flow channel cross-sectional area of the scroll part, and R is the distance from the center of a flow channel cross section of the scroll part to an axis of rotation of a turbine rotor blade. The scroll part has a first sectioned part associated with a first angular range in the circumferential direction, and a second sectioned part that is associated with a second angular range downstream from the first angular range in the circumferential direction and that has a slot width smaller than the slot width of the first sectioned part in the axial direction of the turbine rotor blade.