JPS6412910U - - Google Patents
Info
- Publication number
- JPS6412910U JPS6412910U JP10415787U JP10415787U JPS6412910U JP S6412910 U JPS6412910 U JP S6412910U JP 10415787 U JP10415787 U JP 10415787U JP 10415787 U JP10415787 U JP 10415787U JP S6412910 U JPS6412910 U JP S6412910U
- Authority
- JP
- Japan
- Prior art keywords
- oil
- hydraulic
- hydraulic pump
- oil reservoir
- reservoir
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は本実施例の油圧装置の油圧回路構成図
である。第２図は寒冷時の動力舵取装置駆動側へ
の圧油の供給流量と第１油圧ポンプの回転数との
関係を示すグラフである。第３図は寒冷時の操舵
特性を示すグラフである。第４図は従来例の油圧
回路構成図である。
２……オイルリザーバ、３……第１油圧ポンプ
、４……第１作動装置、５……第２油圧ポンプ、
６……第２油圧作動装置、７……温度センサ、８
……電磁方向切替弁（油圧回路切替弁）、９……
制御部、３１……バイパス通路、３２……逆止弁
。
FIG. 1 is a diagram showing the hydraulic circuit configuration of the hydraulic system of this embodiment. FIG. 2 is a graph showing the relationship between the flow rate of pressure oil supplied to the drive side of the power steering device and the rotational speed of the first hydraulic pump in cold weather. FIG. 3 is a graph showing the steering characteristics in cold weather. FIG. 4 is a diagram showing the configuration of a conventional hydraulic circuit. 2... Oil reservoir, 3... First hydraulic pump, 4... First actuating device, 5... Second hydraulic pump,
6...Second hydraulic actuation device, 7...Temperature sensor, 8
...Solenoid directional switching valve (hydraulic circuit switching valve), 9...
Control unit, 31... Bypass passage, 32... Check valve.
Claims (1)
オイルの供給をうけ第１流量制御弁を介して圧油
を送出する第１油圧ポンプと、該第１油圧ポンプ
から供給される圧油により駆動され該オイルリザ
ーバに排油する動力舵取用の第１油圧作動装置と
、該オイルリザーバよりオイルの供給をうけ第２
流量制御弁を介して圧油を送出する第２油圧ポン
プと、該第２油圧ポンプから供給される圧油によ
り駆動され、該オイルリザーバに排油する第２油
圧作動装置と、少なくとも該第１油圧ポンプに供
給されるオイルの温度を検出する温度センサと、
該第２油圧ポンプと該第２油圧作動装置との間に
設けられ、圧油の供給を該第２油圧作動装置とバ
イパス通路を介して該第１油圧作動装置とに切り
替える油圧回路切替弁と、該温度センサからの入
力により該油圧回路切替弁を制御する制御部とか
らなることを特徴とする油圧装置。 (2) バイパス通路には第２油圧ポンプから第１
油圧作動装置方向のみに圧油を流す逆止弁が設け
られている実用新案登録請求の範囲第１項記載の
油圧装置。[Claims for Utility Model Registration] (1) An oil reservoir, a first hydraulic pump that receives oil from the oil reservoir and sends out pressure oil through a first flow control valve, and a first hydraulic pump that receives oil from the oil reservoir and supplies oil from the first hydraulic pump. a first hydraulic actuator for power steering that is driven by pressurized oil and discharges oil into the oil reservoir, and a second hydraulic actuator that receives oil from the oil reservoir.
a second hydraulic pump that delivers pressure oil through a flow control valve; a second hydraulic actuator that is driven by the pressure oil supplied from the second hydraulic pump and discharges oil into the oil reservoir; a temperature sensor that detects the temperature of oil supplied to the hydraulic pump;
a hydraulic circuit switching valve provided between the second hydraulic pump and the second hydraulic actuating device to switch the supply of pressure oil between the second hydraulic actuating device and the first hydraulic actuating device via a bypass passage; , and a control section that controls the hydraulic circuit switching valve based on input from the temperature sensor. (2) The bypass passage is connected from the second hydraulic pump to the first hydraulic pump.
A hydraulic system according to claim 1, which is provided with a check valve that allows pressure oil to flow only in the direction of the hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10415787U JPH0434247Y2 (en) | 1987-07-07 | 1987-07-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10415787U JPH0434247Y2 (en) | 1987-07-07 | 1987-07-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6412910U true JPS6412910U (en) | 1989-01-24 |
| JPH0434247Y2 JPH0434247Y2 (en) | 1992-08-14 |
Family
ID=31335624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10415787U Expired JPH0434247Y2 (en) | 1987-07-07 | 1987-07-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0434247Y2 (en) |
-
1987
- 1987-07-07 JP JP10415787U patent/JPH0434247Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0434247Y2 (en) | 1992-08-14 |