JPH03122238U - - Google Patents
Info
- Publication number
- JPH03122238U JPH03122238U JP2958690U JP2958690U JPH03122238U JP H03122238 U JPH03122238 U JP H03122238U JP 2958690 U JP2958690 U JP 2958690U JP 2958690 U JP2958690 U JP 2958690U JP H03122238 U JPH03122238 U JP H03122238U
- Authority
- JP
- Japan
- Prior art keywords
- turbocharger
- exhaust
- intake
- switching valve
- valve
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Supercharger (AREA)
Description
第１図は本考案の一実施例に係る過給機付エン
ジンの系統図、第２図は第１図のより具体的な系
統図、第３図は第１図の装置の排気合流管部分の
拡大断面図、第４図は第１図の装置の制御フロー
図、第５図は第４図の制御フローによるターボチ
ヤージヤ切替時の作動特性図、第６図は従来の過
給機付エンジンの概略系統図、第７図は従来の過
給機付エンジンにおける排気合流管部分の断面図
、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、８……副ターボチヤージ
ヤ、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
スサ下流）、１５……吸気通路（コンプレツサ上
流）、１６……排気切替弁のアクチユエータ、１
７……排気切替弁、１８……吸気切替弁、１９…
…酸素センサ、２０……フロントパイプ、２１…
…排気ガス触媒、２２……排気マフラー、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、４０……排気バイパス通路、４１……排
気バイパス弁、４２……排気バイパス弁のアクチ
ユエータ、５１……合流管、５１ａ……主ターボ
チヤージヤ側からの排気通路、５１ｂ……副ター
ボチヤージヤ側からの排気通路、５１ｃ……合流
部、５２……酸素センサの別の取付位置。
Fig. 1 is a system diagram of a supercharged engine according to an embodiment of the present invention, Fig. 2 is a more specific system diagram of Fig. 1, and Fig. 3 is an exhaust junction pipe section of the device shown in Fig. 1. Fig. 4 is a control flow diagram of the device shown in Fig. 1, Fig. 5 is an operational characteristic diagram during turbocharger switching according to the control flow shown in Fig. 4, and Fig. 6 is a diagram of a conventional supercharged engine. A schematic system diagram, FIG. 7, is a sectional view of an exhaust merging pipe portion in a conventional supercharged engine. 1...Engine, 2...Surge tank, 3...
Exhaust manifold, 4... Throttle valve, 5... Throttle opening sensor, 6... Intercooler, 7...
...Main turbocharger, 8...Sub-turbocharger, 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 exhaust switching valve, 1
7...Exhaust switching valve, 18...Intake switching valve, 19...
...Oxygen sensor, 20...Front pipe, 21...
...Exhaust gas catalyst, 22...Exhaust muffler, 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, 40... Exhaust bypass passage, 41... Exhaust bypass valve, 42...actuator of exhaust bypass valve, 51...merging pipe, 51a...exhaust passage from main turbocharger side, 51b...exhaust passage from auxiliary turbocharger side, 51c...merging section, 52...separate oxygen sensor installation position.
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
にそれぞれ設けられた吸気切替弁および排気切替
弁とを備え、該吸気切替弁および排気切替弁を開
閉することによりターボチヤージヤの作動個数を
切り替える過給機付エンジンにおいて、酸素セン
サを、ターボチヤージヤ下流で、かつ、主ターボ
チヤージヤ側にオフセツトした位置に設けたこと
を特徴とする過給機付エンジン。 The main turbocharger and the auxiliary turbocharger are provided in parallel with the engine body, and the intake switching valve and the exhaust switching valve are provided in the intake and exhaust systems of the engine connected to the auxiliary turbocharger, respectively. A supercharged engine that switches the number of operating turbochargers by opening and closing a switching valve, characterized in that an oxygen sensor is provided downstream of the turbocharger and at a position offset to the main turbocharger side. .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029586U JP2517555Y2 (en) | 1990-03-26 | 1990-03-26 | Supercharged engine |
| US07/602,664 US5081842A (en) | 1989-10-23 | 1990-10-24 | Internal combustion engine with a dual turbocharger system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029586U JP2517555Y2 (en) | 1990-03-26 | 1990-03-26 | Supercharged engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03122238U true JPH03122238U (en) | 1991-12-13 |
| JP2517555Y2 JP2517555Y2 (en) | 1996-11-20 |
Family
ID=31532340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990029586U Expired - Fee Related JP2517555Y2 (en) | 1989-10-23 | 1990-03-26 | Supercharged engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2517555Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01310136A (en) * | 1988-06-06 | 1989-12-14 | Mazda Motor Corp | Exhaust sensor mounting structure of engine with turbo-supercharger |
-
1990
- 1990-03-26 JP JP1990029586U patent/JP2517555Y2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01310136A (en) * | 1988-06-06 | 1989-12-14 | Mazda Motor Corp | Exhaust sensor mounting structure of engine with turbo-supercharger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2517555Y2 (en) | 1996-11-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |