JPH02149829U - - Google Patents
Info
- Publication number
- JPH02149829U JPH02149829U JP5806689U JP5806689U JPH02149829U JP H02149829 U JPH02149829 U JP H02149829U JP 5806689 U JP5806689 U JP 5806689U JP 5806689 U JP5806689 U JP 5806689U JP H02149829 U JPH02149829 U JP H02149829U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- turbocharger
- stage
- low
- supercharging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002699 waste material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Supercharger (AREA)
Description
第１図は本考案の一実施例の全体構成図、第２
図は過給圧特性を示す線図である。
１……エンジン、２，４……排気通路、３……
高圧段タービン、５……低圧段タービン、９，１
２……給気通路、１０……電子式制御装置、２１
，４１……排気バイパス通路、２２……排気バイ
パス弁、２３，２５，４３，７３……アクチユエ
ータ、４２……ウエイストゲート弁、７６……圧
力センサ、７５，９３，９５，９７，９９……三
方弁、９２……スロツトル弁、Ｈ……高圧段ター
ボチヤージヤ、Ｌ……低圧段ターボチヤージヤ。
Figure 1 is an overall configuration diagram of an embodiment of the present invention, Figure 2
The figure is a diagram showing boost pressure characteristics. 1...Engine, 2, 4...Exhaust passage, 3...
High pressure stage turbine, 5...Low pressure stage turbine, 9,1
2...Air supply passage, 10...Electronic control device, 21
, 41... Exhaust bypass passage, 22... Exhaust bypass valve, 23, 25, 43, 73... Actuator, 42... Waste gate valve, 76... Pressure sensor, 75, 93, 95, 97, 99... Three-way valve, 92...Throttle valve, H...High pressure stage turbocharger, L...Low pressure stage turbocharger.
Claims (1)
、前記低圧段ターボチヤージヤにおいて加圧され
た空気をさらに加圧して給気冷却器を介してエン
ジンに送る高圧段ターボチヤージヤとを有する２
段ターボ過給エンジンにおいて、高圧段ターボチ
ヤージヤがバイパスされて１段過給の状態となつ
たとき、前記低圧段ターボチヤージヤの排気ター
ビンに対して設けた排気バイパス通路を開閉する
ウエイストゲート弁のアクチユエータに、前記給
気冷却器の下流の給気圧を連通させると共に、２
段過給の状態においては大気圧又は負圧を連通さ
せるように流路を切換える切換え手段を設けたこ
とを特徴とする過給圧制御装置。 A low-pressure turbocharger that pressurizes intake air; and a high-pressure turbocharger that further pressurizes the air pressurized in the low-pressure turbocharger and sends it to the engine via a charge air cooler.
In the stage turbocharged engine, when the high pressure stage turbocharger is bypassed and the state of first stage supercharging is achieved, an actuator of a waste gate valve that opens and closes an exhaust bypass passage provided to the exhaust turbine of the low pressure stage turbocharger; communicating the charge pressure downstream of the charge air cooler;
A supercharging pressure control device comprising a switching means for switching a flow path so that atmospheric pressure or negative pressure is communicated in a state of stage supercharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5806689U JPH02149829U (en) | 1989-05-22 | 1989-05-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5806689U JPH02149829U (en) | 1989-05-22 | 1989-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02149829U true JPH02149829U (en) | 1990-12-21 |
Family
ID=31583339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5806689U Pending JPH02149829U (en) | 1989-05-22 | 1989-05-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02149829U (en) |
-
1989
- 1989-05-22 JP JP5806689U patent/JPH02149829U/ja active Pending
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