JPS5971908U - Oil pump flow control device - Google Patents
Oil pump flow control deviceInfo
- Publication number
- JPS5971908U JPS5971908U JP16695782U JP16695782U JPS5971908U JP S5971908 U JPS5971908 U JP S5971908U JP 16695782 U JP16695782 U JP 16695782U JP 16695782 U JP16695782 U JP 16695782U JP S5971908 U JPS5971908 U JP S5971908U
- Authority
- JP
- Japan
- Prior art keywords
- oil pump
- flow control
- fixed orifice
- bypass hole
- control device
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のオイルポンプの流量制御装置を示す縦断
側面図、第２図は本案に係るオイルポンプの流量制御装
置の一実施例を示す縦断側面図、第３図は第２図矢視■
−■線に沿う縦断側面図、第４図は第２図矢視ＩＶ−ｒ
Ｖ線に沿う横断平面図、第５図は制御プランジャの拡大
縦断側面図、第６図乃至第８図は他の各実施例を示す縦
断側面図、第９図は第８図矢視ＩＸ−ＩＸ線に沿う横断
平面図、第１０図はバイパス孔の開口面積とフローコン
トロールバルブのストロークとの関係を示す説明図、第
１１図はバイパス孔２０ｂがある場合の吐出流量特性を
示す説明図、第１２′図はバイパス孔２０ｂがない場合
の吐出流量特性を示す説明図である。
２・・・供給油路、５または５ａ、 ５ｂ・・・固定
オリフィス、６または６ａ、−６ｂ・・・可変オリフィ
ス、７・・・制御プランジャ、１４・・・フローコント
ロールバルブ、２０ａ、２０ｂ…バイパス孔。Fig. 1 is a longitudinal side view showing a conventional oil pump flow rate control device, Fig. 2 is a longitudinal side view showing an embodiment of the oil pump flow rate control device according to the present invention, and Fig. 3 is a view taken from the arrow in Fig. 2. ■
- Longitudinal side view along line ■, Figure 4 is arrow view IV-r in Figure 2
5 is an enlarged longitudinal sectional side view of the control plunger, FIGS. 6 to 8 are longitudinal sectional side views showing other embodiments, and FIG. 9 is a sectional view taken along the arrow IX- in FIG. A cross-sectional plan view along line IX, FIG. 10 is an explanatory diagram showing the relationship between the opening area of the bypass hole and the stroke of the flow control valve, and FIG. 11 is an explanatory diagram showing the discharge flow rate characteristics when there is a bypass hole 20b. FIG. 12' is an explanatory diagram showing the discharge flow rate characteristics when there is no bypass hole 20b. 2... Supply oil path, 5 or 5a, 5b... Fixed orifice, 6 or 6a, -6b... Variable orifice, 7... Control plunger, 14... Flow control valve, 20a, 20b... Bypass hole.
Claims (1)
びた供給油路の途中に並列に設けた固定オリフィス及び
可変オリフィスと、固定オリフィス上流側の圧力と固定
オリフィス下流側の圧力との差圧が所定値以上になった
ときに可変オリフィスの開度を制御する制御プランジャ
と、上記差圧がさらに大きくなったときにバイパス孔を
開いて固定オリフィスの上流側へ流入した作動油のうち
過剰分をオイルポンプの吸入側へ戻すフローコントロー
ルハルツトラ具え、前記フローコントロニルバルブの摺
動面に、前記バイパス孔とともに開く別のバイパス孔を
設けたことを特徴とするオイルポンプの流量制御装置。A fixed orifice and a variable orifice are provided in parallel in the middle of a supply oil path extending from the discharge side of an oil pump driven by an engine, and the differential pressure between the pressure upstream of the fixed orifice and the pressure downstream of the fixed orifice is a predetermined value. A control plunger that controls the opening degree of the variable orifice when the pressure difference becomes larger than that, and an oil pump that opens the bypass hole and drains the excess hydraulic oil that flows into the upstream side of the fixed orifice when the pressure difference becomes even larger. 1. A flow control device for an oil pump, characterized in that the oil pump is equipped with a flow control Hultstra which returns the flow to the suction side of the oil pump, and further comprises a sliding surface of the flow control valve that is provided with another bypass hole that opens together with the bypass hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16695782U JPS5971908U (en) | 1982-11-05 | 1982-11-05 | Oil pump flow control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16695782U JPS5971908U (en) | 1982-11-05 | 1982-11-05 | Oil pump flow control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5971908U true JPS5971908U (en) | 1984-05-16 |
Family
ID=30365386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16695782U Pending JPS5971908U (en) | 1982-11-05 | 1982-11-05 | Oil pump flow control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5971908U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56104186A (en) * | 1980-01-24 | 1981-08-19 | Toyoda Mach Works Ltd | Flow controller for power steering working fluid |
-
1982
- 1982-11-05 JP JP16695782U patent/JPS5971908U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56104186A (en) * | 1980-01-24 | 1981-08-19 | Toyoda Mach Works Ltd | Flow controller for power steering working fluid |
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