JPH02149832U - - Google Patents
Info
- Publication number
- JPH02149832U JPH02149832U JP5958989U JP5958989U JPH02149832U JP H02149832 U JPH02149832 U JP H02149832U JP 5958989 U JP5958989 U JP 5958989U JP 5958989 U JP5958989 U JP 5958989U JP H02149832 U JPH02149832 U JP H02149832U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- pressure
- relief
- bypass
- introduction passage
- 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 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Supercharger (AREA)
Description
第１図〜第４図は実施例を示し、第１図は全体
概略構成図、第２図はコントロールユニツトの作
動を説明するフローチヤート図、第３図はデユー
テイの特性を説明する特性図、第４図はソレノイ
ド弁の作動特性を示す特性図である。第５図は変
形例のコントロールユニツトの作動を説明するフ
ローチヤート図である。
１……エンジン、３０……排気ターボ過給機、
３１……タービン、３３……パイパス通路、３４
……ウエストゲート弁、３５……アクチユエータ
、３６……圧力導入通路、３７……リリーフ通路
、３８……デユーテイ・ソレノイド・バルブ、３
９……リリーフ遮断弁。
1 to 4 show an embodiment, where FIG. 1 is a general schematic diagram, FIG. 2 is a flowchart explaining the operation of the control unit, and FIG. 3 is a characteristic diagram explaining duty characteristics. FIG. 4 is a characteristic diagram showing the operating characteristics of the solenoid valve. FIG. 5 is a flowchart illustrating the operation of the modified control unit. 1...Engine, 30...Exhaust turbo supercharger,
31...Turbine, 33...Bypass passage, 34
...wastegate valve, 35...actuator, 36...pressure introduction passage, 37...relief passage, 38...duty solenoid valve, 3
9...Relief shutoff valve.
Claims (1)
ービンをバイパスするように排気通路に設けられ
たバイパス通路と、該バイパス通路に設けられた
ウエストゲート弁と、該ウエストゲート弁を開閉
する圧力応動式のアクチユエータと、該アクチユ
エータに過給圧を導入する圧力導入通路と、デユ
ーテイ・ソレノイド・バルブを有して圧力導入通
路に接続され、デユーテイ比に応じて圧力導入通
路の圧力をリリーフするリリーフ通路と、上記圧
力導入通路のリリーフ通路接続部よりも過給圧源
側に、上記デユーテイ・ソレノイド・バルブがリ
リーフ通路を全開にするときに閉じるリリーフ遮
断弁とを設けたことを特徴とするエンジンの過給
圧制御装置。 An exhaust turbo supercharger, a bypass passage provided in the exhaust passage so as to bypass the turbine of the exhaust turbo supercharger, a waste gate valve provided in the bypass passage, and a pressure for opening and closing the waste gate valve. A responsive actuator, a pressure introduction passage that introduces boost pressure to the actuator, and a relief that has a duty solenoid valve and is connected to the pressure introduction passage and relieves the pressure in the pressure introduction passage according to the duty ratio. and a relief cutoff valve that is closed when the duty solenoid valve fully opens the relief passage. boost pressure control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5958989U JPH02149832U (en) | 1989-05-22 | 1989-05-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5958989U JPH02149832U (en) | 1989-05-22 | 1989-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02149832U true JPH02149832U (en) | 1990-12-21 |
Family
ID=31586217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5958989U Pending JPH02149832U (en) | 1989-05-22 | 1989-05-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02149832U (en) |
-
1989
- 1989-05-22 JP JP5958989U patent/JPH02149832U/ja active Pending
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