JPS6319043U - - Google Patents
Info
- Publication number
- JPS6319043U JPS6319043U JP11275586U JP11275586U JPS6319043U JP S6319043 U JPS6319043 U JP S6319043U JP 11275586 U JP11275586 U JP 11275586U JP 11275586 U JP11275586 U JP 11275586U JP S6319043 U JPS6319043 U JP S6319043U
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- intake throttle
- actuator
- pressure
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の第１実施例に係るデイーゼル
エンジンの吸気絞り制御装置の機器系統図、第２
図は第１図の装置のＥＣＵ内部の部分ブロツク図
、第３図は本考案の第２実施例に係るデイーゼル
エンジンの吸気絞り制御装置の機器系統図、第４
図は第３図の装置のＥＣＵ内部の部分ブロツク図
、第５図は従来のデイーゼルエンジンの吸気絞り
制御装置の概略機器系統図、である。
１……エンジン、１ａ……インテークマニホル
ド、２……吸気絞り弁、５……アクチユエータと
してのダイヤフラム装置、６……バキユームポン
プ、７……バキユームタンク、８……バキユーム
スイツチ、１１……切換弁、１１ａ……大気導入
ポート、１２，６１……遮断弁、１３……圧力検
出手段としての圧力スイツチ、５０，６０……Ｅ
ＣＵ。
FIG. 1 is an equipment system diagram of an intake throttle control device for a diesel engine according to a first embodiment of the present invention;
1 is a partial block diagram of the inside of the ECU of the device shown in FIG.
This figure is a partial block diagram of the inside of the ECU of the device shown in FIG. 3, and FIG. 5 is a schematic equipment system diagram of a conventional intake throttle control device for a diesel engine. DESCRIPTION OF SYMBOLS 1... Engine, 1a... Intake manifold, 2... Intake throttle valve, 5... Diaphragm device as an actuator, 6... Vacuum pump, 7... Vacuum tank, 8... Vacuum switch, 11... ...Switching valve, 11a...Atmospheric introduction port, 12,61...Shutoff valve, 13...Pressure switch as pressure detection means, 50,60...E
C.U.
Claims (1)
設け、負圧が導入されることにより前記吸気絞り
弁を閉方向に作動させるアクチユエータを吸気絞
り弁に連結し、該アクチユエータに、バキユーム
ポンプにより負圧が蓄圧されるバキユームタンク
からの負圧導入通路を接続するとともに、該負圧
導入通路に、前記アクチユエータへの導入圧を前
記バキユームポンプ側の負圧と大気側とに切換え
る切換弁を設けたデイーゼルエンジンの吸気絞り
制御装置において、前記切換弁から前記アクチユ
エータへの負圧導入通路に、該通路内の圧力を検
出可能な圧力検出手段を設け、前記切換弁の大気
導入ポートに、前記圧力検出手段からの信号に基
づき、前記切換弁からアクチユエータへの負圧導
入通路の負圧が吸気絞り弁開弁負圧以下の設定値
まで低下したとき切換弁の大気への連通を遮断す
る遮断弁を設けたことを特徴とするデイーゼルエ
ンジンの吸気絞り制御装置。 An intake throttle valve is provided in the intake passage of a diesel engine, and an actuator that operates the intake throttle valve in the closing direction when negative pressure is introduced is connected to the intake throttle valve, and a vacuum pump applies negative pressure to the actuator. A negative pressure introduction passage from a vacuum tank in which pressure is accumulated is connected, and a switching valve is provided in the negative pressure introduction passage for switching the introduction pressure to the actuator between the negative pressure on the vacuum pump side and the atmospheric side. In the intake throttle control device for a diesel engine, a pressure detection means capable of detecting the pressure in the passage is provided in a negative pressure introduction passage from the switching valve to the actuator, and the pressure detection means is provided in the atmospheric air introduction port of the switching valve. Based on a signal from the means, a cutoff valve is operated to cut off communication of the switching valve to the atmosphere when the negative pressure in the negative pressure introduction passage from the switching valve to the actuator decreases to a set value below the intake throttle valve opening negative pressure. An air intake throttle control device for a diesel engine, which is characterized by the following:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11275586U JPH048265Y2 (en) | 1986-07-24 | 1986-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11275586U JPH048265Y2 (en) | 1986-07-24 | 1986-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6319043U true JPS6319043U (en) | 1988-02-08 |
| JPH048265Y2 JPH048265Y2 (en) | 1992-03-03 |
Family
ID=30993923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11275586U Expired JPH048265Y2 (en) | 1986-07-24 | 1986-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048265Y2 (en) |
-
1986
- 1986-07-24 JP JP11275586U patent/JPH048265Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH048265Y2 (en) | 1992-03-03 |
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