JPS6363548U - - Google Patents
Info
- Publication number
- JPS6363548U JPS6363548U JP15785986U JP15785986U JPS6363548U JP S6363548 U JPS6363548 U JP S6363548U JP 15785986 U JP15785986 U JP 15785986U JP 15785986 U JP15785986 U JP 15785986U JP S6363548 U JPS6363548 U JP S6363548U
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- passage
- actuator
- pressure
- throttle
- 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
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Safety Valves (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案の一実施例を示す構成図、第２
図は同じく圧力制御弁の断面図、第３図、第４図
はそれぞれ作用を示すグラフである。第５図は従
来例を示す構成図、第６図、第７図はそれぞれ作
用を示すグラフである。
１……三方切換弁、２……二方切換弁、３……
バキユームポンプ、５……負圧通路、６……アク
チユエータ、７……圧力制御弁、８……希釈通路
、１０……第二チエツク弁、１１……第一チエツ
ク弁、１８……絞り。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The same figure is a cross-sectional view of the pressure control valve, and FIGS. 3 and 4 are graphs showing the effects, respectively. FIG. 5 is a block diagram showing a conventional example, and FIGS. 6 and 7 are graphs showing the effects, respectively. 1... Three-way switching valve, 2... Two-way switching valve, 3...
Vacuum pump, 5... Negative pressure passage, 6... Actuator, 7... Pressure control valve, 8... Dilution passage, 10... Second check valve, 11... First check valve, 18... Throttle.
Claims (1)
、この負圧通路の途中にアクチユエータを負圧源
と大気に選択的に連通する三方切換弁を介装する
とともに、アクチユエータを絞りを介して大気に
連通する希釈通路と、この希釈通路の途中に二方
切換弁を設けて、アクチユエータに導かれる圧力
を大気圧と最大負圧およびその中間負圧の３段階
に制御する圧力制御装置において、前記希釈通路
の途中には前記絞りと直列に第一チエツク弁を配
設するとともに、絞りと並列に第二チエツク弁を
配設し、第一チエツク弁は系内の負圧が前記中間
負圧より僅かに低下すると開弁する一方、第二チ
エツク弁は系内の負圧がこの中間負圧より僅かに
上昇すると開弁するように設定したことを特徴と
する圧力制御装置。 A negative pressure passage that communicates the actuator with a negative pressure source, and a three-way switching valve that selectively communicates the actuator with the negative pressure source and the atmosphere are installed in the middle of this negative pressure passage, and the actuator is connected to the atmosphere through a throttle. A pressure control device that includes a communicating dilution passage and a two-way switching valve in the middle of the dilution passage to control the pressure guided to the actuator in three stages: atmospheric pressure, maximum negative pressure, and intermediate negative pressure. A first check valve is disposed in series with the throttle in the middle of the passage, and a second check valve is disposed in parallel with the throttle. The pressure control device is characterized in that the second check valve is set to open when the negative pressure in the system slightly rises above the intermediate negative pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15785986U JPS6363548U (en) | 1986-10-15 | 1986-10-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15785986U JPS6363548U (en) | 1986-10-15 | 1986-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6363548U true JPS6363548U (en) | 1988-04-26 |
Family
ID=31080802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15785986U Pending JPS6363548U (en) | 1986-10-15 | 1986-10-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6363548U (en) |
-
1986
- 1986-10-15 JP JP15785986U patent/JPS6363548U/ja active Pending