JPH0239541U

JPH0239541U -

Info

Publication number: JPH0239541U
Application number: JP11876488U
Authority: JP
Priority date: 1988-09-09
Filing date: 1988-09-09
Publication date: 1990-03-16

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示し、第１図と第２
図は互いに排気、過給空気案内手段が異なる動作
をなしたツインターボチヤージヤ付エンジンの構
成図、第３図はエンジンのエンジン回転数に対す
るトルク変化の特性図、第４図はエンジン回転数
に対する排圧変化の特性図である。２……第１のターボチヤージヤ、３……第２の
ターボチヤージヤ、１……エンジン、１６……タ
ーボコントロールバルブ、４……排気案内手段、
１１……過給空気導入部（スロツトルバルブ）、
８……第１のインタークーラ、９……第２のイン
タークーラ、１０……過給空気案内手段、５……
排気マフラ、５ａ……第１のポート、５ｂ……第
２のポート、５……排気マフラ、３２……第１の
排気路、３３……第２の排気路。 The drawings show one embodiment of the present invention, and FIGS.
The figure is a configuration diagram of an engine with twin turbo charger in which the exhaust and supercharging air guide means operate differently from each other, Figure 3 is a characteristic diagram of the torque change with respect to the engine speed, and Figure 4 is a diagram showing the characteristics of the engine torque with respect to the engine speed. It is a characteristic diagram of exhaust pressure change. 2...First turbocharger, 3...Second turbocharger, 1...Engine, 16...Turbo control valve, 4...Exhaust guide means,
11...Supercharged air introduction part (throttle valve),
8...First intercooler, 9...Second intercooler, 10...Supercharged air guide means, 5...
Exhaust muffler, 5a...first port, 5b...second port, 5...exhaust muffler, 32...first exhaust path, 33...second exhaust path.

Claims

[Scope of utility model registration request]

It is equipped with an engine in which a first turbocharger and a second turbocharger are connected in parallel, and a turbo control valve that opens in a high-speed range, and the exhaust gas from the engine is divided into the first and second turbochargers for air supply and guidance, and Exhaust guide means for closing the turbo control valve in a low speed range to bypass the first turbocharger and supplying and guiding the entire exhaust gas of the engine to the second turbocharger; and supercharging of the first and second turbochargers. A first intercooler and a second intercooler are respectively disposed between the air supply side and the supercharged air introduction part of the engine, and in the high speed range, the supercharger compressed by the first and second turbochargers is The supply air is guided to the first and second intercoolers, and in the low speed range, the supercharged air sent from the second turbocharger is switched to the second intercooler and then to the first intercooler. a first port for introducing exhaust air from the first turbocharger via a control valve, and a second port for introducing exhaust air from the second turbocharger, each The exhaust muffler is equipped with an exhaust muffler that muffles the sound of the exhaust gas introduced from the port and discharges it to the outside, and the exhaust muffler has a first exhaust gas that communicates with the first port and has a relatively low noise reduction effect and low ventilation resistance. An engine with a twin turbo charger, characterized in that it has a second exhaust passage which communicates with the passageway and the second port and has a large noise reduction effect and a relatively large ventilation resistance.