JPS6351122U

JPS6351122U -

Info

Publication number: JPS6351122U
Application number: JP14276786U
Authority: JP
Priority date: 1986-09-19
Filing date: 1986-09-19
Publication date: 1988-04-06

Description

[Brief explanation of the drawing]

第１図は本考案による動圧過給式ターボチヤー
ジヤの概略断面図；第２図は第１図における矢印
方向からのタービンハウジングの断面図；第３
図は従来の動圧過給式ターボチヤージヤの断面図
；第４図はクランク角度により各ターボチヤージ
ヤの排気脈動波（排気圧力）の変化を示すグラフ
；第５図はタービンスクロール位置によるタービ
ンスクロール面積の推移を示すグラフ；第６図は
エンジン回転数により、各ターボチヤージヤの軸
トルクの変化を示すグラフ。第７図は本考案のキ
ヤビテイ形成に関し、別の実施例を示す部分的断
面図；第８図はさらに別の実施例を示す、排気マ
ニホールドにキヤビテイを形成した部分的断面図
；第９図は第８図の―線に沿つた断面図
。１……排気マニホールド（排気通路）、１１…
…キヤビテイ、１２……タービンスクロール、１
４……バタフライ弁。 Fig. 1 is a schematic sectional view of a hydrodynamic turbocharger according to the present invention; Fig. 2 is a sectional view of the turbine housing taken from the direction of the arrow in Fig. 1;
The figure is a cross-sectional view of a conventional dynamic pressure supercharging turbocharger; Figure 4 is a graph showing changes in the exhaust pulsation wave (exhaust pressure) of each turbocharger depending on the crank angle; Figure 5 is a graph showing changes in the turbine scroll area depending on the turbine scroll position. FIG. 6 is a graph showing changes in shaft torque of each turbocharger depending on engine speed. Fig. 7 is a partial sectional view showing another embodiment of the cavity formation of the present invention; Fig. 8 is a partial sectional view showing still another embodiment in which a cavity is formed in the exhaust manifold; A sectional view taken along the line - in FIG. 8. 1...exhaust manifold (exhaust passage), 11...
...Cavity, 12...Turbine scroll, 1
4...Butterfly valve.

Claims

[Scope of utility model registration request]

A cavity is formed in a turbine scroll of a turbocharger or in an exhaust passage upstream of the turbine scroll, and the cavity and the turbine scroll or the cavity and the exhaust passage are communicated or cut off depending on the engine load condition. Pressure supercharging turbocharger.