JPH02105544U

JPH02105544U -

Info

Publication number: JPH02105544U
Application number: JP1496889U
Authority: JP
Priority date: 1989-02-09
Filing date: 1989-02-09
Publication date: 1990-08-22

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の全体概略図、第２
図は同実施例における差圧検出弁の断面図、第３
図は同実施例の制御特性図、第４図は同実施例の
要部構造を具体的に示す断面図である。１０１：エンジン、１０２，１０３：排気通路
、１０４：プライマリターボ過給機、１０６：セ
カンダリターボ過給機、１２２：連通路、１２３
：排気カツト弁、１８１：タービンケーシング。 Fig. 1 is an overall schematic diagram of an embodiment of the present invention;
The figure is a cross-sectional view of the differential pressure detection valve in the same embodiment.
The figure is a control characteristic diagram of the same embodiment, and FIG. 4 is a sectional view specifically showing the main structure of the same embodiment. 101: Engine, 102, 103: Exhaust passage, 104: Primary turbo supercharger, 106: Secondary turbo supercharger, 122: Communication passage, 123
: Exhaust cut valve, 181: Turbine casing.

Claims

[Scope of utility model registration request]

The blower and turbine of a first turbocharger that operates at least in a low flow rate region and the blower and turbine of a second turbocharger that operates in a high flow rate region are arranged in parallel in the intake passage and the exhaust passage, respectively. In the supercharged engine disposed in the engine, the turbines of the first and second turbochargers are disposed in independent exhaust passages, and the turbine of the second turbocharger is disposed. An exhaust cut valve that closes in the low flow region and opens in the high flow region is provided in the exhaust passage, and a communication passage communicating between the upstream of the exhaust cut valve and the upstream of the turbine of the first turbocharger is provided for supercharging. An exhaust system for a supercharged engine, characterized in that it is formed integrally with the engine casing.