JPS6453492U - - Google Patents
Info
- Publication number
- JPS6453492U JPS6453492U JP14976187U JP14976187U JPS6453492U JP S6453492 U JPS6453492 U JP S6453492U JP 14976187 U JP14976187 U JP 14976187U JP 14976187 U JP14976187 U JP 14976187U JP S6453492 U JPS6453492 U JP S6453492U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- relief
- casing
- valve
- pump
- 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
- 239000000446 fuel Substances 0.000 claims description 13
- 239000002828 fuel tank Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Safety Valves (AREA)
- Temperature-Responsive Valves (AREA)
Description
第１図及び第２図は本考案の第１の実施例に係
り、第１図は燃料ポンプに設けたリリーフバルブ
の閉弁状態を示す縦断面図、第２図は燃料温度の
変化によつて異るリリーフバルブの開弁状態を示
す断面図、第３図は第２の実施例に係り、燃料ポ
ンプのリリーフポートに設けたリード弁が燃料温
度の変化に応じて変形する場合を示す断面図、第
４図及び第５図は従来技術を示し、第４図は燃料
ポンプを含む燃料噴射装置の全体構成を示す系統
図、第５図は燃料温度が異る場合の燃料ポンプの
リリーフ圧力と吐出流量の関係を示す特性線図で
ある。
１……燃料タンク、２１……ケーシング、２２
……リリーフポート、２３，３１……リリーフバ
ルブ、２７，３６……リリーフ量規制部材。
1 and 2 relate to the first embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional view showing the closed state of the relief valve provided in the fuel pump, and FIG. FIG. 3 is a cross-sectional view showing different opening states of the relief valve according to the second embodiment, and a cross-sectional view showing a case where the reed valve provided at the relief port of the fuel pump deforms in response to changes in fuel temperature. 4 and 5 show the prior art, FIG. 4 is a system diagram showing the overall configuration of the fuel injection device including the fuel pump, and FIG. 5 shows the relief pressure of the fuel pump when the fuel temperature is different. FIG. 1...Fuel tank, 21...Casing, 22
... Relief port, 23, 31 ... Relief valve, 27, 36 ... Relief amount regulating member.
Claims (1)
ングと、該ケーシングに設けられ、燃料タンクに
連通するリリーフポートと、該リリーフポートに
形成された弁座及び該弁座に離着座する弁体から
なり、前記ケーシング内の燃料圧力が所定値に達
したときには開弁して該ケーシング内の燃料を前
記燃料タンク側にリリーフするリリーフバルブと
を備えた燃料ポンプにおいて、前記リリーフポー
ト内には前記ケーシング内の燃料温度が上昇する
のに応じて燃料のリリーフ量を減少させるための
リリーフ量規制部材を配設したことを特徴とする
燃料ポンプ。 Consisting of a casing housing a pump part and a motor part therein, a relief port provided in the casing and communicating with a fuel tank, a valve seat formed in the relief port, and a valve body seated on and off the valve seat, In the fuel pump, the relief valve includes a relief valve that opens when the fuel pressure in the casing reaches a predetermined value to relieve the fuel in the casing to the fuel tank, and the relief port includes a A fuel pump characterized in that a relief amount regulating member is provided to reduce the amount of fuel relief as the fuel temperature rises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14976187U JPH051675Y2 (en) | 1987-09-30 | 1987-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14976187U JPH051675Y2 (en) | 1987-09-30 | 1987-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6453492U true JPS6453492U (en) | 1989-04-03 |
| JPH051675Y2 JPH051675Y2 (en) | 1993-01-18 |
Family
ID=31422286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14976187U Expired - Lifetime JPH051675Y2 (en) | 1987-09-30 | 1987-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051675Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013060862A (en) * | 2011-09-13 | 2013-04-04 | Hitachi Automotive Systems Ltd | Engine malfunction diagnosing device |
-
1987
- 1987-09-30 JP JP14976187U patent/JPH051675Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013060862A (en) * | 2011-09-13 | 2013-04-04 | Hitachi Automotive Systems Ltd | Engine malfunction diagnosing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH051675Y2 (en) | 1993-01-18 |