JPH0341157U - - Google Patents
Info
- Publication number
- JPH0341157U JPH0341157U JP10079589U JP10079589U JPH0341157U JP H0341157 U JPH0341157 U JP H0341157U JP 10079589 U JP10079589 U JP 10079589U JP 10079589 U JP10079589 U JP 10079589U JP H0341157 U JPH0341157 U JP H0341157U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fuel
- engine
- diaphragm
- autocock
- 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 15
- 239000012528 membrane Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Landscapes
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Description
第１図は本考案のオートコツク付膜式燃料ポン
プの実施例の断面図、第２図は本考案のオートコ
ツク付膜式燃料ポンプとエンジンとの接続関係を
示す図である。
符号の説明、２……ポンプ筺体、３……第１の
ダイアフラム、５……ポンプ作用室、６……吸入
側逆止弁、７……燃料吸入口、８……吐出側逆止
弁、９……燃料吐出口、１０……クランクケース
に接続される空間、１１……吸入側燃料通路、１
２……吐出側燃料通路、１３……第２のダイアフ
ラム、１４……弁体、１５……第２の蓋体、１６
……負圧室、１７……スプリング、１８……負圧
通路、１９……整流弁、２２……エンジン、２３
……クランクケース、２４……吸気管、２５……
気化器。
FIG. 1 is a cross-sectional view of an embodiment of the membrane fuel pump with auto-cock of the present invention, and FIG. 2 is a diagram showing the connection relationship between the membrane-type fuel pump with auto-cock of the present invention and an engine. Explanation of symbols, 2... Pump housing, 3... First diaphragm, 5... Pump action chamber, 6... Suction side check valve, 7... Fuel inlet, 8... Discharge side check valve, 9... Fuel discharge port, 10... Space connected to the crankcase, 11... Suction side fuel passage, 1
2...Discharge side fuel passage, 13...Second diaphragm, 14...Valve body, 15...Second lid body, 16
... Negative pressure chamber, 17 ... Spring, 18 ... Negative pressure passage, 19 ... Rectifier valve, 22 ... Engine, 23
...Crankcase, 24...Intake pipe, 25...
vaporizer.
Claims (1)
てポンプ作用室５が形成され、該ポンプ作用室５
に吸入側逆止弁６を備えた燃料吸入口７と吐出側
逆止弁８を備えた燃料吐出口９とが開口し、前記
第１のダイアフラム３にエンジン・クランクケー
ス２３内の脈動圧力が作用してポンプ作用が行わ
れる膜式燃料ポンプ１であつて、前記燃料吸入口
７または前記燃料吐出口９に連通して前記ポンプ
筐体２に形成されている燃料通路１１に、第２の
ダイアフラム１３に固定された弁体１４を有する
オートコツクが配置され、該オートコツクが、エ
ンジン運転中、該エンジンが発生する圧力が前記
第２のダイアフラム１３に作用して開弁し、エン
ジンが停止すると前記エンジンが発生する圧力が
消滅して閉弁するオートコツク付膜式燃料ポンプ
１において、前記第２のダイアフラム１３の前記
燃料通路１１とは反対側に、整流弁１９を配置し
た負圧通路１８を介してエンジンの吸気負圧を導
く負圧室１６を形成し、該負圧室１６に前記弁体
を閉方向に付勢するスプリング１７を配置してオ
ートコツクを形成したオートクツク付膜式燃料ポ
ンプ。 A pump action chamber 5 is formed by the pump housing 2 and the first diaphragm 3.
The fuel inlet 7 with the suction side check valve 6 and the fuel outlet 9 with the discharge side check valve 8 are opened, and the pulsating pressure inside the engine crankcase 23 is applied to the first diaphragm 3. In the membrane fuel pump 1, which operates to perform a pumping action, a second fuel passage 11 is formed in the pump housing 2 and communicates with the fuel intake port 7 or the fuel discharge port 9. An autocock having a valve body 14 fixed to the diaphragm 13 is disposed, and when the engine is running, the autocock opens when the pressure generated by the engine acts on the second diaphragm 13, and when the engine is stopped, the autocock opens the valve. In the membrane fuel pump 1 with autocock which closes when the pressure generated by the engine disappears, the valve is connected to the second diaphragm 13 through a negative pressure passage 18 in which a rectifying valve 19 is disposed on the opposite side of the fuel passage 11. A membrane fuel pump with an automatic valve is formed by forming a negative pressure chamber 16 that guides the intake negative pressure of the engine, and a spring 17 that biases the valve body in the closing direction is arranged in the negative pressure chamber 16 to form an automatic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10079589U JPH0341157U (en) | 1989-08-29 | 1989-08-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10079589U JPH0341157U (en) | 1989-08-29 | 1989-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0341157U true JPH0341157U (en) | 1991-04-19 |
Family
ID=31649777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10079589U Pending JPH0341157U (en) | 1989-08-29 | 1989-08-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0341157U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610916U (en) * | 1979-07-02 | 1981-01-30 |
-
1989
- 1989-08-29 JP JP10079589U patent/JPH0341157U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610916U (en) * | 1979-07-02 | 1981-01-30 |
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