JPS6387234U - - Google Patents
Info
- Publication number
- JPS6387234U JPS6387234U JP18317086U JP18317086U JPS6387234U JP S6387234 U JPS6387234 U JP S6387234U JP 18317086 U JP18317086 U JP 18317086U JP 18317086 U JP18317086 U JP 18317086U JP S6387234 U JPS6387234 U JP S6387234U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- valve
- compressor
- upstream
- supercharger
- 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
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 6
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Supercharger (AREA)
Description
第１図はこの考案の一実施例の概略構成図、第
２図はこの実施例のバイパス弁開度特性を示す線
図、第３図はこの実施例の調圧弁特性を示す線図
、第４図はこの実施例の作用を説明する絞り弁全
開時の過給圧特性図である。第５図は従来例の概
略構成図である。
１…機関本体、３Ａ，３Ｂ…吸気通路、３Ｄ…
コレクタ部、４…吸気絞り弁、５…機械駆動式過
給機、７…クランク軸プーリ、９…ベルト、１０
…電磁クラツチ、１１…ターボチヤージヤ、１１
Ａ…吸気コンプレツサ、１１Ｂ…排気タービン、
１２…バイパス通路、１３…バイパス弁、１５…
第１のダイヤフラムアクチユエータ、１５Ｄ…作
動室、１６…連通路、１８…排気通路、２１…第
２のダイヤフラムアクチユエータ、３１…調圧弁
、３２…連通路、４１…ダイヤフラムアクチユエ
ータ、４２…ウエイストゲートバルブ、４３…バ
イパス通路、４５…三方向切換弁、５０…コント
ロールユニツト、５１…絞り弁開度センサ、５２
…回転速度センサ。
Fig. 1 is a schematic configuration diagram of an embodiment of this invention, Fig. 2 is a diagram showing the bypass valve opening characteristics of this embodiment, and Fig. 3 is a diagram showing the pressure regulating valve characteristics of this embodiment. FIG. 4 is a supercharging pressure characteristic diagram when the throttle valve is fully open, explaining the operation of this embodiment. FIG. 5 is a schematic diagram of a conventional example. 1...Engine body, 3A, 3B...Intake passage, 3D...
Collector part, 4... Intake throttle valve, 5... Mechanically driven supercharger, 7... Crankshaft pulley, 9... Belt, 10
...Electromagnetic clutch, 11...Turbo charger, 11
A...Intake compressor, 11B...Exhaust turbine,
12...Bypass passage, 13...Bypass valve, 15...
First diaphragm actuator, 15D... Working chamber, 16... Communication passage, 18... Exhaust passage, 21... Second diaphragm actuator, 31... Pressure regulating valve, 32... Communication passage, 41... Diaphragm actuator, 42... Waste gate valve, 43... Bypass passage, 45... Three-way switching valve, 50... Control unit, 51... Throttle valve opening sensor, 52
...Rotation speed sensor.
Claims (1)
れ介装した排気タービンと吸気コンプレツサとを
同軸に設け、排気エネルギにて排気タービンを回
転することにより吸気コンプレツサを駆動するタ
ーボチヤージヤと、前記コンプレツサと前記絞り
弁の間の吸気通路に介装される機械駆動式の過給
機と、この過給機をバイパスする通路と、この通
路に介装されるバイパス弁と、前記過給機下流で
かつ絞り弁上流の圧力に応動して前記コンプレツ
サ上流の圧力と絞り弁下流の圧力を選択的に導く
調圧弁と、この調圧弁からの圧力に応動してこの
圧力が低くなるほど前記バイパス弁の開度を増大
させる第１のダイヤフラムアクチユエータと、こ
のアクチユエータと連動するとともに、前記過給
機下流でかつ絞り弁上流の圧力に応動してこの圧
力が高くなるほど前記バイパス弁開度を増大させ
る第２のダイヤフラムアクチユエータと、前記コ
ンプレツサ下流でかつ過給機上流の圧力が予め設
定した目標圧を超えると前記タービンをバイパス
して排気を逃すウエイストゲートバルブと、前記
調圧弁に導入される絞り弁下流の圧力を前記コン
プレツサ上流の圧力に切り換える三方向切換弁と
、機関本体から前記機械式過給機への駆動力を接
断する電磁クラツチと、低速中負荷及び低速全負
荷時にこのクラツチを接続する一方で前記切換弁
を非作動とし、かつ高速全負荷時にクラツチを切
断する一方で前記切換弁を作動させるようにする
手段とを設けたことを特徴とする機関の過給圧制
御装置。 An exhaust turbine and an intake compressor are installed coaxially in the exhaust passage and the intake passage upstream of the intake throttle valve, respectively, and a turbocharger drives the intake compressor by rotating the exhaust turbine with exhaust energy, the compressor and the intake throttle; A mechanically driven supercharger interposed in an intake passage between the valves, a passage bypassing this supercharger, a bypass valve interposed in this passage, and a throttle valve downstream of the supercharger. a pressure regulating valve that selectively guides the pressure upstream of the compressor and the pressure downstream of the throttle valve in response to the upstream pressure; and in response to the pressure from the pressure regulating valve, the opening degree of the bypass valve is increased as the pressure decreases. a first diaphragm actuator that operates in conjunction with the actuator, and a second diaphragm that increases the opening degree of the bypass valve as this pressure increases in response to pressure downstream of the supercharger and upstream of the throttle valve; an actuator, a waste gate valve that bypasses the turbine and releases exhaust gas when the pressure downstream of the compressor and upstream of the supercharger exceeds a preset target pressure, and a waste gate valve downstream of the throttle valve that is introduced into the pressure regulating valve. A three-way switching valve that switches the pressure to the pressure upstream of the compressor, an electromagnetic clutch that connects and disconnects the driving force from the engine body to the mechanical supercharger, and a one-way switch that connects this clutch at low speed, medium load, and low speed full load. A supercharging pressure control system for an engine, comprising: means for deactivating the switching valve, and disengaging the clutch at high speed and full load, while operating the switching valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18317086U JPH0511306Y2 (en) | 1986-11-28 | 1986-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18317086U JPH0511306Y2 (en) | 1986-11-28 | 1986-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6387234U true JPS6387234U (en) | 1988-06-07 |
| JPH0511306Y2 JPH0511306Y2 (en) | 1993-03-19 |
Family
ID=31129659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18317086U Expired - Lifetime JPH0511306Y2 (en) | 1986-11-28 | 1986-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0511306Y2 (en) |
-
1986
- 1986-11-28 JP JP18317086U patent/JPH0511306Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0511306Y2 (en) | 1993-03-19 |
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