JPH0166433U

JPH0166433U -

Info

Publication number: JPH0166433U
Application number: JP1987160854U
Authority: JP
Priority date: 1987-10-22
Filing date: 1987-10-22
Publication date: 1989-04-27

Description

[Brief explanation of the drawing]

第１図ａ〜ｄはこの考案の一実施例を示し、第
１図ａは、排気出口側スクロールの横断面、第１
図ｂはベアリングハウジング側のスクロールの横
断面、第１図ｃは第１図ａのＡ―Ａ断面でタービ
ンハウジングの縦断面を示し、第１図ｄは第１図
ｂのＸ矢視図を示す。第２図は従来のタービンハ
ウジングの縦断面を示す。１…排気出口側スクロール、２…ベアリングハ
ウジング側スクロール、３…排気ガス入口、４…
舌部、５…舌部、６…隔壁、７…外周壁、８…斜
面壁、９…凸部、１０…タービンインペラ、α…
中心角。 Figures 1a to 1d show an embodiment of this invention, and Figure 1a is a cross-sectional view of the exhaust outlet side scroll.
Figure b shows a cross section of the scroll on the bearing housing side, Figure 1 c shows a longitudinal cross section of the turbine housing along the line AA in Figure 1 a, and Figure 1 d shows a view taken along the X arrow in Figure 1 b. show. FIG. 2 shows a longitudinal section of a conventional turbine housing. 1... Exhaust outlet side scroll, 2... Bearing housing side scroll, 3... Exhaust gas inlet, 4...
Tongue, 5... Tongue, 6... Partition wall, 7... Outer peripheral wall, 8... Slope wall, 9... Convex part, 10... Turbine impeller, α...
central angle.

補正昭６２．１１．１６実用新案登録請求の範囲を次のように補正する
。Amendment November 16, 1982 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】内燃機関用の排気ターボ過給機の二口タービン
ハウジングにおいて、排気出口側スクロールの舌
部と、ベアリングハウジング側スクロールとの舌
部の位置をずらし、かつ排気出口側スクロールの
舌部付近の排気通路面積の急激な変化を緩和する
ため、排気出口側の斜面壁に舌部を延設した凸部
を設けて、渦流の乱れの低減を計ると共に、舌部
の肉厚を均一化して舌部の亀裂防止をはかつてい
ることを特徴とする、排気タービン過給機のター
ビンハウジング。[Claim for Utility Model Registration] In a two-port turbine housing of an exhaust turbo supercharger for an internal combustion engine, the tongue of the scroll on the exhaust outlet side and the tongue of the scroll on the bearing housing side are shifted in position, and the tongue of the scroll on the exhaust outlet side is shifted. In order to alleviate sudden changes in the area of the exhaust passage near the tongue of the scroll, a protrusion with an extended tongue is provided on the slope wall on the exhaust outlet side to reduce turbulence in the vortex and to reduce the thickness of the tongue. A turbine housing for an exhaust turbine supercharger, characterized by having a uniform thickness to prevent cracks in the tongue.

Claims

[Scope of utility model registration request]

In the two-port turbine hanging of an exhaust turbo supercharger for an internal combustion engine, the tongue of the exhaust outlet side scroll is shifted from the tongue of the bearing housing side scroll, and the exhaust near the tongue of the exhaust outlet side scroll is shifted. In order to alleviate sudden changes in the passage area, a convex part with an extended tongue is provided on the slope wall on the exhaust outlet side to reduce Karman vortices, and the wall thickness of the tongue is made uniform to reduce the tongue part. A turbine housing for an exhaust turbo supercharger that is characterized by being crack-proof.