JPH0399836U - - Google Patents
Info
- Publication number
- JPH0399836U JPH0399836U JP620190U JP620190U JPH0399836U JP H0399836 U JPH0399836 U JP H0399836U JP 620190 U JP620190 U JP 620190U JP 620190 U JP620190 U JP 620190U JP H0399836 U JPH0399836 U JP H0399836U
- Authority
- JP
- Japan
- Prior art keywords
- switching valve
- turbocharger
- engine
- exhaust
- intake
- 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.)
- Granted
Links
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000010349 pulsation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Supercharger (AREA)
Description
第１図は本考案の第１実施例に係る過給機付エ
ンジンの系統図、第２図は第１図の装置の制御フ
ロー図、第３図は第２図の制御フローによるエン
ジン回転数−過給圧特性図、第４図は本考案の第
２実施例に係る過給機付エンジンの系統図、第５
図は本考案の第３実施例に係る過給機付エンジン
の系統図、第６図は従来の過給機付エンジンの概
略系統図、第７図は第６図のエンジンの排気脈動
の様子を示すターボチヤージヤまわりの系統図、
第８図は従来装置における排気切替弁と副ターボ
チヤージヤタービンとの距離に関しての、過給圧
と時間との関係図、第９図は従来装置における排
気切替弁と副ターボチヤージヤタービンとの距離
に関しての、副ターボチヤージヤ空転数とエンジ
ン回転数との関係図、である。
１……エンジン、２……サージタンク、３……
排気マニホルド、４……スロツトル弁、５……ス
ロツトル開度センサ、６……インタクーラ、７…
…主ターボチヤージヤ、７ａ……主ターボチヤー
ジヤのタービン、８……副ターボチヤージヤ、８
ａ……副ターボチヤージヤのタービン、１０……
吸気バイパス弁のアクチユエータ、１１……吸気
切替弁のアクチユエータ、１３……吸気バイパス
通路、１４……吸気通路（コンプレツサ下流）、
１５……吸気通路（コンプレツサ上流）、１６…
…第１の排気切替弁のアクチユエータ、１７ａ…
…第１の排気切替弁、１７ｂ……第２の排気切替
弁、１８……吸気切替弁、２４……エアフローメ
ータ、２５……第１の三方電磁弁、２６……第２
の三方電磁弁、２７……第３の三方電磁弁、２８
……第４の三方電磁弁、２９……エンジンコント
ロールコンピユータ、３０……吸気管圧力センサ
、３１……ウエストゲートバルブ、３２……第５
の三方電磁弁、３３……吸気バイパス弁、３４…
…第２の排気切替弁のアクチユエータ、４１……
チヤンバ。
Fig. 1 is a system diagram of a supercharged engine according to the first embodiment of the present invention, Fig. 2 is a control flow diagram of the device shown in Fig. 1, and Fig. 3 is an engine rotation speed according to the control flow shown in Fig. 2. - Supercharging pressure characteristic diagram, Fig. 4 is a system diagram of a supercharged engine according to the second embodiment of the present invention, Fig. 5
The figure is a system diagram of a supercharged engine according to the third embodiment of the present invention, Figure 6 is a schematic system diagram of a conventional supercharged engine, and Figure 7 is a state of exhaust pulsation of the engine in Figure 6. System diagram around the turbocharger showing
Figure 8 is a diagram of the relationship between boost pressure and time with respect to the distance between the exhaust switching valve and the auxiliary turbocharger turbine in a conventional device, and Figure 9 is a diagram showing the relationship between the exhaust switching valve and the auxiliary turbocharger turbine in the conventional device. FIG. 3 is a relationship diagram between the auxiliary turbocharger idling speed and the engine rotation speed with respect to distance. 1...Engine, 2...Surge tank, 3...
Exhaust manifold, 4... Throttle valve, 5... Throttle opening sensor, 6... Intercooler, 7...
...Main turbocharger, 7a...Main turbocharger turbine, 8...Sub-turbocharger, 8
a... Sub-turbocharger turbine, 10...
Intake bypass valve actuator, 11...Intake switching valve actuator, 13...Intake bypass passage, 14...Intake passage (downstream of compressor),
15...Intake passage (upstream of compressor), 16...
... Actuator of the first exhaust switching valve, 17a...
...First exhaust switching valve, 17b... Second exhaust switching valve, 18... Intake switching valve, 24... Air flow meter, 25... First three-way solenoid valve, 26... Second
Three-way solenoid valve, 27...Third three-way solenoid valve, 28
... Fourth three-way solenoid valve, 29 ... Engine control computer, 30 ... Intake pipe pressure sensor, 31 ... Waste gate valve, 32 ... Fifth
Three-way solenoid valve, 33...Intake bypass valve, 34...
... Actuator of the second exhaust switching valve, 41...
Chiyamba.
Claims (1)
チヤージヤおよび副ターボチヤージヤと、副ター
ボチヤージヤに接続されたエンジンの吸、排気系
に設けられ、ともに全開のときは副ターボチヤー
ジヤに過給作動を行わせ、ともに全閉のときには
副ターボチヤージヤの過給作動を停止させる吸気
切替弁および排気切替弁と、を備えた過給機付エ
ンジンにおいて、前記排気切替弁を、副ターボチ
ヤージヤのタービン下流側に設けられた第１の排
気切替弁と、副ターボチヤージヤのタービンに接
続されたエンジンの排気系において前記第１の排
気切替弁よりも上流側に設けられ、過給圧が予め
設定された圧力よりも低い場合には閉じられ該設
定圧力以上になると開かれる第２の排気切替弁と
から構成したことを特徴とする過給機付エンジン
。 The main turbocharger and auxiliary turbocharger are installed in parallel with the engine body, and the auxiliary turbocharger is connected to the engine intake and exhaust system. When both are fully open, the auxiliary turbocharger performs supercharging operation, and both are fully closed. In a supercharged engine equipped with an intake switching valve and an exhaust switching valve that stop the supercharging operation of the auxiliary turbocharger when A switching valve is provided upstream of the first exhaust switching valve in the exhaust system of the engine connected to the turbine of the auxiliary turbocharger, and is closed when the boost pressure is lower than a preset pressure. A supercharged engine comprising a second exhaust switching valve that opens when the pressure exceeds a set pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP620190U JP2503642Y2 (en) | 1990-01-29 | 1990-01-29 | Supercharged engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP620190U JP2503642Y2 (en) | 1990-01-29 | 1990-01-29 | Supercharged engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0399836U true JPH0399836U (en) | 1991-10-18 |
| JP2503642Y2 JP2503642Y2 (en) | 1996-07-03 |
Family
ID=31509879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP620190U Expired - Fee Related JP2503642Y2 (en) | 1990-01-29 | 1990-01-29 | Supercharged engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503642Y2 (en) |
-
1990
- 1990-01-29 JP JP620190U patent/JP2503642Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2503642Y2 (en) | 1996-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |