JPS63125194U

JPS63125194U -

Info

Publication number: JPS63125194U
Application number: JP1751387U
Authority: JP
Priority date: 1987-02-09
Filing date: 1987-02-09
Publication date: 1988-08-16

Description

[Brief explanation of drawings]

第１図は本考案の実施例に係り、第１図は燃料
ポンプの上カバー等の要部を示す縦断面図、第２
図ないし第４図は第２の実施例に係り、第２図は
燃料ポンプの上カバー等の要部を示す縦断面図、
第３図はホツトリスタートバルブの閉弁状態を示
す第２図と同様の縦断面図、第４図はリリーフ弁
の開弁状態を示す第２図と同様の縦断面図、第５
図は先行技術による燃料ポンプを示す縦断面図、
第６図および第７図は他の先行技術を示し、第６
図は燃料ポンプのケーシング上端側を示す斜視図
、第７図はホツトリスタートバルブを示す縦断面
図である。１……ケーシング、２……ケーシング本体、４
……上カバー、６……電動モータ、１２……ポン
プ部、１８……吐出ポート、２０……吐出弁、３
１，４１……リリーフポート、３２，４２……リ
リーフ弁、３４，４３……弁体、３４Ｂ，４３Ａ
……排出穴、３７，４６……ホツトリスタートバ
ルブ、３８……ポペツト弁体、４７……小径弁体
。 Fig. 1 relates to an embodiment of the present invention, Fig. 1 is a longitudinal sectional view showing main parts such as the upper cover of the fuel pump, and Fig. 2
4 to 4 relate to the second embodiment, and FIG. 2 is a vertical sectional view showing main parts such as the upper cover of the fuel pump;
FIG. 3 is a longitudinal sectional view similar to FIG. 2 showing the hot restart valve in the closed state, FIG. 4 is a longitudinal sectional view similar to FIG. 2 showing the relief valve in the open state, and FIG.
The figure is a longitudinal sectional view showing a fuel pump according to the prior art;
6 and 7 show other prior art,
This figure is a perspective view showing the upper end side of the casing of the fuel pump, and FIG. 7 is a longitudinal sectional view showing the hot restart valve. 1... Casing, 2... Casing body, 4
...Top cover, 6...Electric motor, 12...Pump section, 18...Discharge port, 20...Discharge valve, 3
1, 41... Relief port, 32, 42... Relief valve, 34, 43... Valve body, 34B, 43A
...Drain hole, 37, 46...Hot restart valve, 38...Poppet valve body, 47...Small diameter valve body.

Claims

[Scope of utility model registration request]

A casing, a motor section and a pump section provided in the casing, a discharge valve provided at a discharge port of the casing to discharge fuel from the pump section, and an excess fuel discharged from the pump section. In a fuel pump comprising a relief valve provided at a relief port of the casing, the relief valve has a valve body that is normally open to discharge vapor in the casing to the outside. A fuel pump characterized in that it is equipped with a hot restart valve that closes when the pressure inside the casing reaches a predetermined low pressure.