JPS61159629U

JPS61159629U -

Info

Publication number: JPS61159629U
Application number: JP4360085U
Authority: JP
Priority date: 1985-03-25
Filing date: 1985-03-25
Publication date: 1986-10-03
Also published as: JPH0350268Y2

Description

[Brief explanation of the drawing]

第１図は、本考案の実施例に係る排気ターボ過
給装置のタービンケーシングの中央縦断面図、第
２図は、第１図のＡ―Ａ線拡大断面図、第３図は
、第１図のＢ―Ｂ線断面図、第４図は上記排気タ
ーボ過給装置の正面図、第５図は第４図の―
矢視図、第６図は第４図の―矢視図、第７図
は第６図の―断面図、第８図は第７図の―
断面図、第９図は第８図の―断面図、第１
０図は第９図に示した弁装置の状態変化図、第１
１図は従来の排気ターボ過給装置のタービンケー
シング部の構造説明図である。１……エンジン本体、２……ターボ過給機、４
……排気管、６……弁装置、７……弁作動装置、
８，９……アクチユエータ、１１，１２……イン
シユレータ、２１……タービンケーシング、２２
……コンプレツサケーシング、２３……センター
ケーシング、２６……隔壁、２６ａ〜２６ｃ……
薄肉部、２７……第１の排気ガス通路、２８……
第２の排気ガス通路。 FIG. 1 is a central vertical sectional view of a turbine casing of an exhaust turbocharger according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view taken along line A--A in FIG. 1, and FIG. 4 is a front view of the exhaust turbo supercharging device, and FIG. 5 is a sectional view taken along line B-B in the figure.
6 is a view from the arrow in FIG. 4, FIG. 7 is a sectional view from FIG. 6, and FIG. 8 is a sectional view from FIG. 7.
The cross-sectional view, Figure 9, is the cross-sectional view, No. 1, of Figure 8.
Figure 0 is a state change diagram of the valve device shown in Figure 9.
FIG. 1 is a structural explanatory diagram of a turbine casing portion of a conventional exhaust turbocharging device. 1...Engine body, 2...Turbo supercharger, 4
...Exhaust pipe, 6...Valve device, 7...Valve actuation device,
8, 9... Actuator, 11, 12... Insulator, 21... Turbine casing, 22
... Compressor casing, 23 ... Center casing, 26 ... Partition wall, 26a to 26c ...
Thin wall portion, 27... First exhaust gas passage, 28...
Second exhaust gas passage.

Claims

[Scope of utility model registration request]

The exhaust gas introduction passage in the turbine casing is divided into a plurality of exhaust gas passages by partition walls along the flow direction of the exhaust gas, and the exhaust gas is introduced into all or part of these exhaust gas passages depending on the operating state of the engine. The exhaust turbo supercharging device is configured to allow air to flow through the exhaust gas, and of both wall surfaces of the partition wall, a thin wall portion extending in the radial direction of the turbine casing is provided only on the wall surface on the exhaust gas passage side that is used only in the high-speed operating range of the engine. An exhaust turbo supercharging device characterized in that: