JPH0227058U - - Google Patents
Info
- Publication number
- JPH0227058U JPH0227058U JP10494588U JP10494588U JPH0227058U JP H0227058 U JPH0227058 U JP H0227058U JP 10494588 U JP10494588 U JP 10494588U JP 10494588 U JP10494588 U JP 10494588U JP H0227058 U JPH0227058 U JP H0227058U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- variable displacement
- displacement pump
- regulator valve
- pressure regulator
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Control Of Transmission Device (AREA)
Description
第１図は本考案の可変容量ポンプのライン圧制
御装置の第１実施例の全体構成を示す線図、第２
図は同じく第２実施例の第１実施例との相違点を
示すためのプレツシヤレギユレータ弁の縦断面図
、第３図はスプリング荷重に対する弁ストローク
の関係を示す特性図、第４図は従来例の可変容量
ポンプのライン圧制御装置の全体構成を示す線図
である。
１０……可変容量ポンプ、１６……ライン圧回
路、１７……プレツシヤレギユレータ弁、１７ａ
〜１７ｅ……ポート、１７ｆ，１７ｇ……バネ装
着部、１８……スロツトル圧回路、１９……フイ
ードバツク圧回路、２０，５０〜５３……スプリ
ング、２１……ブリードオリフイス、２２……フ
イードバツク油圧室、２３……コントロールピス
トン。
FIG. 1 is a diagram showing the overall configuration of the first embodiment of the line pressure control device for a variable displacement pump of the present invention;
The figures are also longitudinal cross-sectional views of the pressure regulator valve to show the differences between the second embodiment and the first embodiment, FIG. 3 is a characteristic diagram showing the relationship between the valve stroke and the spring load, and FIG. The figure is a diagram showing the overall configuration of a conventional variable displacement pump line pressure control device. 10... Variable displacement pump, 16... Line pressure circuit, 17... Pressure regulator valve, 17a
~17e...port, 17f, 17g...spring mounting part, 18...throttle pressure circuit, 19...feedback pressure circuit, 20,50-53...spring, 21...bleed orifice, 22...feedback hydraulic chamber , 23...control piston.
Claims (1)
ライン圧を調圧するプレツシヤレギユレータ弁と
、このプレツシヤレギユレータ弁を介して導かれ
た圧力を用いてフイードバツク油圧室に設けたピ
ストンを作動させることにより前記可変容量ポン
プの出力ライン圧をフイードバツク制御するフイ
ードバツク制御機構とを具える可変容量ポンプの
ライン圧制御装置において、 前記プレツシヤレギユレータ弁に、前記ライン
圧の所定調圧範囲内と範囲外とでは異なるバネ定
数となるような非線形特性を有するスプリングを
設けたことを特徴とする可変容量ポンプのライン
圧制御装置。[Claims for Utility Model Registration] A variable displacement pump, a pressure regulator valve that regulates the output line pressure of the variable displacement pump, and a pressure regulator valve that uses the pressure guided through the pressure regulator valve. and a feedback control mechanism for feedback-controlling the output line pressure of the variable displacement pump by actuating a piston provided in a feedback hydraulic chamber, the pressure regulator valve A line pressure control device for a variable displacement pump, further comprising a spring having a non-linear characteristic such that the spring constant is different when the line pressure is within the predetermined pressure regulation range and when it is outside the range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10494588U JPH0227058U (en) | 1988-08-10 | 1988-08-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10494588U JPH0227058U (en) | 1988-08-10 | 1988-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0227058U true JPH0227058U (en) | 1990-02-22 |
Family
ID=31337122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10494588U Pending JPH0227058U (en) | 1988-08-10 | 1988-08-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0227058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001187960A (en) * | 1999-11-08 | 2001-07-10 | General Motors Corp <Gm> | Trim valve for fluid-operated friction torque transmission device |
-
1988
- 1988-08-10 JP JP10494588U patent/JPH0227058U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001187960A (en) * | 1999-11-08 | 2001-07-10 | General Motors Corp <Gm> | Trim valve for fluid-operated friction torque transmission device |