JPS61137894U - - Google Patents
Info
- Publication number
- JPS61137894U JPS61137894U JP2045885U JP2045885U JPS61137894U JP S61137894 U JPS61137894 U JP S61137894U JP 2045885 U JP2045885 U JP 2045885U JP 2045885 U JP2045885 U JP 2045885U JP S61137894 U JPS61137894 U JP S61137894U
- Authority
- JP
- Japan
- Prior art keywords
- roller
- chamber
- communication port
- clearance
- communicate
- 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
- 239000000446 fuel Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
第１図は本考案の一実施例を示す燃料ポンプの
要部構成図、第２図は第１図の矢視図、第３図
は容室容積変化とポート開閉タイミングの関係を
示す線図、第４図は従来例を示す燃料ポンプの断
面図、第５図は同上の要部構成図である。
１…ポンプベース、２…ポンプリング、３…ポ
ンププレート、５…ロータ、６…溝、７…ローラ
、２１Ａ，２１Ｂ…吸入ポート、２２Ａ，２２Ｂ
…吐出ポート、２３…第１連通ポート、２４…第
２連通ポート、Ａ…ローラ内側容室、Ｂ…ローラ
外側容室。
Fig. 1 is a configuration diagram of the main parts of a fuel pump showing an embodiment of the present invention, Fig. 2 is a view taken in the direction of the arrows in Fig. 1, and Fig. 3 is a diagram showing the relationship between chamber volume change and port opening/closing timing. , FIG. 4 is a sectional view of a conventional fuel pump, and FIG. 5 is a configuration diagram of the main parts of the same. 1... Pump base, 2... Pump ring, 3... Pump plate, 5... Rotor, 6... Groove, 7... Roller, 21A, 21B... Suction port, 22A, 22B
...Discharge port, 23...First communication port, 24...Second communication port, A...Roller inner chamber, B...Roller outer chamber.
Claims (1)
るロータの外周面に設けた複数の溝にローラを配
置してなるローラベーン式の燃料ポンプにおいて
、ロータ側の溝とローラとのクリアランスをロー
ラ摺動に必要なクリアランスまで縮小する一方、
ポンプハウジング側壁に形成される吸入ポート及
び吐出ポートを２つずつ設けて、各々をローラ内
側容室と外側容室とに対応する位置に配し、ロー
タ側の溝の一側にローラの突出時にローラ内側容
室と外側容室とを連通させる第１連通ポートを形
成し、該溝の他側にローラの没入時にローラ内側
容室と外側容室とを連通させる第２連通ポートを
形成したことを特徴とする燃料ポンプ。 In roller vane fuel pumps, which have rollers arranged in multiple grooves on the outer circumferential surface of a rotor that rotates around an eccentric position within the pump housing, clearance between the grooves on the rotor side and the roller is required for roller sliding. While the clearance has been reduced to
Two suction ports and two discharge ports are formed on the side wall of the pump housing, and each is placed at a position corresponding to the inner and outer chambers of the roller. A first communication port is formed to communicate the roller inner chamber and the outer chamber, and a second communication port is formed on the other side of the groove to communicate the roller inner chamber and the outer chamber when the roller is retracted. A fuel pump featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2045885U JPS61137894U (en) | 1985-02-18 | 1985-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2045885U JPS61137894U (en) | 1985-02-18 | 1985-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61137894U true JPS61137894U (en) | 1986-08-27 |
Family
ID=30510962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2045885U Pending JPS61137894U (en) | 1985-02-18 | 1985-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61137894U (en) |
-
1985
- 1985-02-18 JP JP2045885U patent/JPS61137894U/ja active Pending