JPH02131034U - - Google Patents

Info

Publication number
JPH02131034U
JPH02131034U JP4043389U JP4043389U JPH02131034U JP H02131034 U JPH02131034 U JP H02131034U JP 4043389 U JP4043389 U JP 4043389U JP 4043389 U JP4043389 U JP 4043389U JP H02131034 U JPH02131034 U JP H02131034U
Authority
JP
Japan
Prior art keywords
pressure
throttle valve
opening degree
turbocharger
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
Application number
JP4043389U
Other languages
Japanese (ja)
Other versions
JPH0736096Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4043389U priority Critical patent/JPH0736096Y2/en
Publication of JPH02131034U publication Critical patent/JPH02131034U/ja
Application granted granted Critical
Publication of JPH0736096Y2 publication Critical patent/JPH0736096Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Supercharger (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例の全体構成図、第２
図は全負荷時の過給圧特性を示す線図である。 １……エンジン、２……排気通路、３……高圧
段タービン、５……低圧段タービン、９……給気
通路、１０……電子式制御装置、１２……給気通
路、２１……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、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 one embodiment of the present invention, Figure 2
The figure is a diagram showing supercharging pressure characteristics at full load. DESCRIPTION OF SYMBOLS 1...Engine, 2...Exhaust passage, 3...High pressure stage turbine, 5...Low pressure stage turbine, 9...Air supply passage, 10...Electronic control device, 12...Air supply passage, 21... Exhaust bypass passage, 22... Exhaust bypass valve, 23, 25, 43, 73... Actuator, 75, 93, 95, 97, 99... Three-way valve, 92... Throttle valve, H... High pressure stage turbo charger, L ...Low pressure stage turbocharger.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 吸入空気を加圧する低圧段ターボチヤージヤと
、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スロツトル弁を介してエ
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、前記スロツト
ル弁の開度を検出する手段と、前記手段がスロツ
トル弁の開度が所定値よりも小であることを検出
したときに、前記高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の排気
バイパス弁の開度を前記高圧段ターボチヤージヤ
のコンプレツサの出口圧力に応じて調節すると共
に、前記スロツトル弁の開度が所定値よりも大で
あることを検出したときに、前記排気バイパス弁
の開度を前記スロツトル弁の後の給気通路の圧力
に応じて調節するように切換える切換え手段とを
設けたことを特徴とする過給圧制御装置。 In a two-stage turbocharged engine having 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 throttle valve, the throttle valve means for detecting the opening degree of the throttle valve; and when the means detects that the opening degree of the throttle valve is smaller than a predetermined value, an exhaust bypass of an exhaust bypass passage provided for the exhaust turbine of the high pressure stage turbocharger is detected. The opening degree of the valve is adjusted according to the outlet pressure of the compressor of the high pressure stage turbocharger, and when it is detected that the opening degree of the throttle valve is larger than a predetermined value, the opening degree of the exhaust bypass valve is adjusted. A supercharging pressure control device comprising: switching means for switching to adjust the pressure in accordance with the pressure in the air supply passage after the throttle valve.
JP4043389U 1989-04-07 1989-04-07 Supercharging pressure controller for 2-stage turbocharged engine Expired - Fee Related JPH0736096Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4043389U JPH0736096Y2 (en) 1989-04-07 1989-04-07 Supercharging pressure controller for 2-stage turbocharged engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4043389U JPH0736096Y2 (en) 1989-04-07 1989-04-07 Supercharging pressure controller for 2-stage turbocharged engine

Publications (2)

Publication Number Publication Date
JPH02131034U true JPH02131034U (en) 1990-10-30
JPH0736096Y2 JPH0736096Y2 (en) 1995-08-16

Family

ID=31550220

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4043389U Expired - Fee Related JPH0736096Y2 (en) 1989-04-07 1989-04-07 Supercharging pressure controller for 2-stage turbocharged engine

Country Status (1)

Country Link
JP (1) JPH0736096Y2 (en)

Also Published As

Publication number Publication date
JPH0736096Y2 (en) 1995-08-16

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees