JPH0694876B2 - Fuel supply device for supplying fuel from a fuel tank to an internal combustion engine - Google Patents
Fuel supply device for supplying fuel from a fuel tank to an internal combustion engineInfo
- Publication number
- JPH0694876B2 JPH0694876B2 JP26879686A JP26879686A JPH0694876B2 JP H0694876 B2 JPH0694876 B2 JP H0694876B2 JP 26879686 A JP26879686 A JP 26879686A JP 26879686 A JP26879686 A JP 26879686A JP H0694876 B2 JPH0694876 B2 JP H0694876B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- supply device
- fuel supply
- pump
- combustion engine
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 75
- 239000002828 fuel tank Substances 0.000 title claims description 20
- 238000002485 combustion reaction Methods 0.000 title claims description 18
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000036316 preload Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/20—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Safety Valves (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、燃料を燃料タンクから内燃機関へ供給するた
めの燃料供給装置であつて、燃料が通過するケーシング
を備えており、該ケーシング内には、供給ポンプおよび
該ポンプを駆動するモータが収容されていると共に、燃
料の流動方向で見て前記供給ポンプの後方に該供給ポン
プによつて制限された吐出室が形成されており、該吐出
室が、過圧発生時に開く弁機構を介して前記供給ポンプ
の吸込側へ開放可能であり、前記弁機構の閉鎖部材は、
燃料供給装置の平常運転時には、プレロードを負荷され
た圧縮ばねによつて閉鎖位置に保持されている形式のも
のに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply device for supplying fuel from a fuel tank to an internal combustion engine, the device including a casing through which the fuel passes. A supply pump and a motor for driving the pump are housed, and a discharge chamber limited by the supply pump is formed behind the supply pump when viewed in the flow direction of the fuel. However, it is possible to open to the suction side of the supply pump through a valve mechanism that opens when overpressure occurs, and the closing member of the valve mechanism is
During normal operation of the fuel supply device, it is of the type which is held in the closed position by a compression spring loaded with a preload.
従来の技術 前記形式の燃料供給装置は、ドイツ連邦共和国特許出願
公開第2700855号明細書により既に公知である。この場
合吐出室には逆止弁が設けられていて、過圧発生時にこ
の逆止弁が開いて過圧による装置の損傷が防止されるよ
うになつている。内燃機関の運転中、安全の為に内燃機
関に過剰に供給される燃料は、燃料タンク内に戻される
が、この場合燃料は著しく加熱される。この加熱された
燃料は燃料タンク内で蒸発する。この現象は内燃機関が
運転されている限りは問題を生じない。しかし、内燃機
関が、比較的長い時間運転された後に停止された場合に
は、燃料タンク内の全燃料が加熱された状態になつてお
り、燃料供給装置内にガスが発生する。このガスは、遂
には燃料供給装置の全吐出室を満たす程になり、このさ
い燃料供給装置のケーシング中の燃料は吸込口を介して
燃料タンク内へ押し戻される。しかしこのガスを過圧弁
として働く前記逆止弁を介して逃がすことは不可能であ
る。それというのは、前記逆止弁の弁閉鎖圧は燃料供給
装置の吐出圧よりも高く設定されており、蒸気圧がこの
弁閉鎖圧を克服してこの逆止弁を開くことはできないか
らである。従つて、燃料供給装置の運転を再開する場
合、ポンプによつて新たに吸込んだ燃料をこのポンプに
よつて内燃機関に供給するには、まずガスを導管系から
除去しなければならない。このガス除去のために内燃機
関への燃料供給がかなり遅延する。これは、場合によつ
ては不都合なことであり、また内燃機関が自動車のエン
ジンである場合には危険でもある。2. Description of the Related Art A fuel supply device of the type mentioned is already known from DE-A-2700855. In this case, a check valve is provided in the discharge chamber so that when the overpressure occurs, the check valve is opened to prevent damage to the device due to the overpressure. During operation of the internal combustion engine, the fuel that is excessively supplied to the internal combustion engine for safety is returned to the fuel tank, where the fuel is significantly heated. This heated fuel evaporates in the fuel tank. This phenomenon does not cause a problem as long as the internal combustion engine is operating. However, when the internal combustion engine is stopped after being operated for a relatively long time, all the fuel in the fuel tank is in a heated state, and gas is generated in the fuel supply device. This gas finally fills all the discharge chambers of the fuel supply device, and the fuel in the casing of the fuel supply device is pushed back into the fuel tank through the suction port. However, it is not possible to let this gas escape via the check valve, which acts as an overpressure valve. This is because the valve closing pressure of the check valve is set higher than the discharge pressure of the fuel supply device, and the vapor pressure cannot overcome the valve closing pressure to open the check valve. is there. Therefore, when restarting the operation of the fuel supply device, in order to supply the fuel newly sucked by the pump to the internal combustion engine by this pump, gas must first be removed from the conduit system. This degassing significantly delays the fuel supply to the internal combustion engine. This is in some cases inconvenient and also dangerous if the internal combustion engine is the engine of a motor vehicle.
発明の課題 本発明の課題は、燃料供給装置内に発生したガスを直ち
に装置外へ排出し、内燃機関の運転開始時に、燃料供給
遅れを生じることなく速やかに燃料を供給できるような
燃料供給装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel supply device that immediately discharges gas generated in the fuel supply device to the outside of the device so that the fuel can be quickly supplied without delay in fuel supply when the internal combustion engine starts to operate. To provide.
課題を解決するための手段 前述の課題は本発明によれば、はじめに述べた形式の燃
料供給装置において、閉鎖部材が、供給ポンプの吐出側
を同供給ポンプの吸込側に接続する通路を有しており、
該通路がその吐出側に、弁機構の閉鎖体のための弁座を
備えており、前記閉鎖体が、やはり通路の吐出側に、そ
の閉鎖位置と開放位置との間で運動可能に配置されてい
ることにより解決される。Means for Solving the Problems According to the present invention, according to the above-mentioned problems, in the fuel supply device of the type described first, the closing member has a passage connecting the discharge side of the supply pump to the suction side of the supply pump. And
The passageway is provided on its discharge side with a valve seat for a closing body of the valve mechanism, said closing body being also movably arranged on the discharge side of the passageway between its closed and open positions. Will be solved.
発明の効果 本発明によつて得られる効果は、加熱によつて発生した
燃料ガスが直ちに燃料供給装置から逃げることができる
ことにある。それというのは、供給ポンプ停止時には、
過圧弁の閉鎖部材中の通路は開かれており、加熱によつ
て発生した燃料ガスは供給ポンプの吸込側に戻され到る
からである。しかし供給ポンプ運転時には、前記閉鎖部
材は吐出される燃料によつて閉鎖位置へ移動されていて
その閉鎖位置に保持されており、従つて該過圧弁の閉鎖
部材はその安全機能を完全に果すことができる。また内
燃機関への燃料供給の遅延も避けられる。EFFECT OF THE INVENTION The effect obtained by the present invention is that the fuel gas generated by heating can immediately escape from the fuel supply device. That is, when the supply pump is stopped,
This is because the passage in the closing member of the overpressure valve is open and the fuel gas generated by heating is returned to the suction side of the supply pump. However, during operation of the feed pump, the closing member has been moved to and held in the closed position by the discharged fuel, so that the closing member of the overpressure valve fulfills its safety function completely. You can Further, it is possible to avoid delay of fuel supply to the internal combustion engine.
実施態様 実施態様に記載の手段によつて、本発明の燃料供給装置
を有利に改良できる。Embodiment By means of the embodiments, the fuel supply device according to the invention can be advantageously improved.
実施例 第１図には燃料タンク10が示されており、この燃料タン
ク内に、図面には見えていないが、燃料供給装置が配置
されている。燃料供給装置には供給導管12が接続されて
おり、燃料供給装置が作動すると、前記供給導管12を介
して内燃機関14に燃料が供給される。第２図は、燃料供
給装置16を示しており、該燃料供給装置は内燃機関に燃
料を供給するために使用されるものであつて燃料タンク
10内に設けることができる。燃料供給装置は、管状に形
成されているケーシング18を有している。この管状のケ
ーシング18の開放されている両端部は、ケーシングカバ
ー20,22によつて閉鎖されている。ケーシングカバー20
が吸込管片24を有しているのに対し、ケーシングカバー
22は吐出管片26を備えている。ケーシングカバー20,22
が所属しているケーシング18の内部には、吸込管片24の
近くに、２段式の供給ポンプ28が収容されている。この
２段式の供給ポンプ28は、電動機によつて駆動される。
その電機子30は第２図に示されている。ケーシングカバ
ー22は、特別な構成を有する過圧弁32を有しており、以
下この過圧弁32は第３図及び第４図につき説明する。前
述のことから明らかなように、供給される燃料は、燃料
供給装置のケーシング18を、吸込管片24から吐出管片26
へ、符号34を付された矢印の方向で通過する。このよう
な構成は、たとえばドイツ連邦共和国特許出願公開第27
00855号明細書から公知である。本発明の図示の実施例
では供給ポンプ28は、補助ポンプ段36及び燃料の流れ方
向で見て補助ポンプ段36の後方に配置されている、内接
形歯車ポンプ又は偏心形ポンプとして構成された主ポン
プ段38によつて構成されている。供給ポンプ28は、吐出
圧が作用する吐出室40（第２図）の片側を制限してお
り、該吐出室40は、供給ポンプ28とケーシングカバー22
との間に位置している。燃料が通過するこの吐出室40内
には電動機も位置している。Embodiment 1 A fuel tank 10 is shown in FIG. 1, and a fuel supply device (not shown in the drawing) is arranged in the fuel tank. A supply conduit 12 is connected to the fuel supply device, and when the fuel supply device operates, fuel is supplied to the internal combustion engine 14 via the supply conduit 12. FIG. 2 shows a fuel supply device 16, which is used to supply fuel to an internal combustion engine and is a fuel tank.
It can be provided within 10. The fuel supply device has a casing 18 formed in a tubular shape. Both open ends of the tubular casing 18 are closed by casing covers 20 and 22. Casing cover 20
Has a suction pipe piece 24, while the casing cover
22 includes a discharge pipe piece 26. Casing cover 20,22
A two-stage supply pump 28 is housed inside the casing 18 to which the suction pipe piece 24 belongs, near the suction pipe piece 24. The two-stage supply pump 28 is driven by an electric motor.
The armature 30 is shown in FIG. The casing cover 22 has an overpressure valve 32 having a special structure, which will be described below with reference to FIGS. 3 and 4. As is clear from the above, the supplied fuel is supplied from the suction pipe piece 24 to the discharge pipe piece 26 in the casing 18 of the fuel supply device.
To, in the direction of the arrow labeled 34. Such an arrangement is, for example, German patent application publication number 27
It is known from specification 00855. In the illustrated embodiment of the invention, the feed pump 28 is configured as an internal gear pump or an eccentric pump, which is arranged behind the auxiliary pump stage 36 and the auxiliary pump stage 36 in the direction of fuel flow. It is constituted by the main pump stage 38. The supply pump 28 limits one side of the discharge chamber 40 (FIG. 2) on which the discharge pressure acts, and the discharge chamber 40 includes the supply pump 28 and the casing cover 22.
It is located between and. An electric motor is also located in the discharge chamber 40 through which the fuel passes.
過圧弁32は、閉鎖部材44を有しており、該閉鎖部材44
は、ケーシングカバー22の管状の突出部内に収容されて
いる。この閉鎖部材44自体はスリーブ状に形成されてい
て、その一方の端部に、支持シヨルダ50を有するつば48
を有している。前記支持シヨルダ50には、閉鎖部材44の
スリーブ状の部分を取り囲む、プレロードをかけられた
圧縮ばね51が支持されている。管状の突出部46に固定さ
れた、支持シヨルダ50と向い合う支持部52は、圧縮ばね
51を突出部内に確保すると共に、圧縮ばね51の所要のプ
レロードを保証する。つば48の、支持部52とは反対側の
部分は、シール部材54として形成されており、該シール
部材54は、ケーシングカバー22の弁座56を密封する。第
３図に示す運動状態では、圧縮ばね51が閉鎖部材44のシ
ール部材54を弁座56に当接させており、つまり閉鎖部材
44は、燃料供給装置16の平常運転時の作動位置にある。
過圧弁32のこの閉鎖部材44は、通路60を有しており、該
通路は閉鎖部材44の長手方向に延びており、つまり、燃
料供給装置の吐出室40を供給ポンプ28の吸込側（タン
ク）に接続している。通路60の、吐出室40側は、円錐形
弁座62として形成されており、該円錐形弁座62には通路
60の閉鎖体として役立つ球64が所属している。閉鎖部材
44のこの円錐形弁座62は、吐出室40に向つて広がつてい
る。第２図に示すように、燃料供給装置16が直立に配設
されている場合、球64はホツパ状の気泡捕獲部分66内に
位置し、この気泡捕獲部分はケーシングカバー22と一体
成形されており、かつ吐出室40内に侵入している。ホツ
パ状の気泡捕獲部分66は閉鎖部材44に向かつて広がつて
いる。気泡捕獲部分66と閉鎖部材44の円錐形弁座62との
間の間隔は、球64が閉鎖位置と開放位置との間で運動可
能であるように選択されている。球64が閉鎖位置にある
状態が第３図に鎖線で示されており、符号70を付されて
いる。球64は、実線で示されている開放位置では、気泡
捕獲部分66に形成されている、互いに間隔をおいて配置
された３個のリブ状の張り出し部72に当接する。この３
個の張り出し部72の間には、通路74が形成されている
（第４図）。The overpressure valve 32 has a closing member 44, and the closing member 44
Are housed in the tubular protrusion of the casing cover 22. The closure member 44 itself is formed in the shape of a sleeve and has a collar 48 having a support shoulder 50 at one end thereof.
have. The support shoulder 50 carries a preloaded compression spring 51 which surrounds the sleeve-like portion of the closure member 44. The support 52 fixed to the tubular protrusion 46 and facing the support shoulder 50 is a compression spring.
Ensuring that 51 is in the protrusion, it also ensures the required preloading of the compression spring 51. A portion of the collar 48 opposite to the support portion 52 is formed as a seal member 54, which seals the valve seat 56 of the casing cover 22. In the movement state shown in FIG. 3, the compression spring 51 causes the sealing member 54 of the closing member 44 to abut against the valve seat 56, that is, the closing member.
44 is in the operating position during normal operation of the fuel supply device 16.
This closing member 44 of the overpressure valve 32 has a passage 60, which extends in the longitudinal direction of the closing member 44, i.e. the discharge chamber 40 of the fuel supply device on the suction side of the supply pump 28 (tank). ) Is connected to. The discharge chamber 40 side of the passage 60 is formed as a conical valve seat 62, and the conical valve seat 62 has a passage.
A sphere 64, which serves as a closed body for 60, belongs to it. Closing member
This conical valve seat 62 of 44 widens towards the discharge chamber 40. As shown in FIG. 2, when the fuel supply device 16 is installed upright, the sphere 64 is located in a hopper-shaped bubble-capturing portion 66, which is integrally molded with the casing cover 22. And has entered the discharge chamber 40. The hopper-shaped bubble trapping portion 66 extends toward the closing member 44. The spacing between the bubble capture portion 66 and the conical valve seat 62 of the closure member 44 is selected so that the sphere 64 is moveable between a closed position and an open position. The condition in which the sphere 64 is in the closed position is shown in phantom in FIG. 3 and is labeled 70. In the open position, shown in solid lines, the sphere 64 abuts three spaced apart rib-shaped overhangs 72 formed in the bubble trapping portion 66. This 3
A passage 74 is formed between the individual protruding portions 72 (FIG. 4).
燃料供給装置16の運転中、球64は矢印34の方向で流れる
燃料によつて円錐形弁座62内へ押付けられるので、閉鎖
部材44内の通路60は閉鎖されている。つまり燃料供給装
置の運転中、燃料は吐出管片26及び供給導管12を経て内
燃機関14へ流れる。During operation of the fuel supply system 16, the ball 64 is pressed into the conical valve seat 62 by the fuel flowing in the direction of the arrow 34, so that the passage 60 in the closure member 44 is closed. That is, during operation of the fuel supply system, fuel flows through the discharge pipe piece 26 and the supply conduit 12 to the internal combustion engine 14.
燃料供給系内に生じた障害のために吐出室内の圧力が所
定の値を上回ると、閉鎖部材44は円錐形弁座62内に位置
する球64と共に圧縮ばね50の力に抗して弁座56から矢印
76の方向に押し上げられ、その結果燃料は閉鎖部材44の
つば48に沿つて流過し、管状の突出部46から流出して供
給ポンプ28の吸込側へ達する。この吸込側は、図示の実
施例では燃料タンク10の内室によつて形成されている。
燃料供給装置16が比較的長時間運転された後停止され、
燃料タンク10内の燃料が加熱されて蒸発すると、吐出室
40内の燃料も加熱されて蒸発する。しかしながら、この
さい発生した蒸気は直ちに、気泡捕獲部分66の張り出し
部72間に位置する通路74を通過し、球64と円錐形弁座62
との間の間隙を通つて、閉鎖部材44の通路60に達し、そ
こから燃料タンク内に流入する。When the pressure in the discharge chamber exceeds a predetermined value due to an obstruction in the fuel supply system, the closure member 44, together with the ball 64 located in the conical valve seat 62, resists the force of the compression spring 50 and the valve seat. Arrow from 56
It is pushed up in the direction of 76 so that the fuel flows along the brim 48 of the closure member 44 and out of the tubular projection 46 to the suction side of the feed pump 28. This suction side is formed by the inner chamber of the fuel tank 10 in the illustrated embodiment.
The fuel supply device 16 is stopped after being operated for a relatively long time,
When the fuel in the fuel tank 10 is heated and evaporates, the discharge chamber
The fuel in 40 is also heated and evaporated. However, the vapor generated at this time immediately passes through the passage 74 located between the overhangs 72 of the bubble trap portion 66, and the sphere 64 and the conical valve seat 62
Through the gap between and to the passage 60 of the closure member 44 and from there into the fuel tank.
本発明の、通気弁として機能する円錐形弁座62と球64
は、燃料供給装置16が、次のような位置に配設されてい
る時に特に確実に作動する、すなわち、ケーシング18内
における矢印34で示される燃料の主たる流動方向が、水
平方向からそれるような位置に配設されている時に特に
確実に作動する。この場合、燃料供給装置16が、いわゆ
るインタンク装置として燃料タンク内に配置されている
か、又は、インライン装置として導管中に配置されてい
るかは問題ではない。燃料供給装置16をインライン装置
として使用する場合には、流出したガスが原因で不都合
な悪臭が生じないように、管状の突出部46から燃料タン
ク10へ通じる戻し導管を設ける。The conical valve seat 62 and sphere 64 of the present invention functioning as a vent valve.
Operates particularly reliably when the fuel supply device 16 is arranged in the following positions, that is, the main flow direction of the fuel in the casing 18 indicated by the arrow 34 deviates from the horizontal direction. It operates particularly reliably when it is installed at various positions. In this case, it does not matter whether the fuel supply device 16 is arranged in the fuel tank as a so-called in-tank device or in the conduit as an in-line device. When the fuel supply device 16 is used as an in-line device, a return conduit leading from the tubular protrusion 46 to the fuel tank 10 is provided so that an unpleasant odor is not generated due to the outflowing gas.
第１図は、内燃機関及び、燃料供給装置が内部に配置さ
れている燃料タンクを有する装置の略示図、第２図は、
第１図に示す装置に用いられている、停止状態にある本
発明の燃料供給装置を拡大しかつ一部を断面して示す
図、第３図は、第２図のIII部分を拡大して示す図、第
４図は、第３図の、IV−IV線による断面図である。 10……燃料タンク、12……供給導管、14……内燃機関、
16……燃料供給装置、18……ケーシング、20,22……ケ
ーシングカバー、24……吸込管片、26……吐出管片、28
……供給ポンプ、30……電機子軸、32……過圧弁、34…
…矢印、36……補助ポンプ段、38……主ポンプ段、40…
…吐出室、44……閉鎖部材、46……突出部、48……つ
ば、50……支持シヨルダ、51……圧縮ばね、52……支持
部、54……シール部材、56……弁座、60……通路、62…
…円錐形弁座、64……球、66……気泡捕獲部分、70……
閉鎖位置、72……張り出し部、74……通路FIG. 1 is a schematic diagram of an internal combustion engine and a device having a fuel tank in which a fuel supply device is arranged, and FIG.
FIG. 3 is an enlarged and partially sectional view of the fuel supply system of the present invention in a stopped state, which is used in the system shown in FIG. 1, and FIG. 3 is an enlarged view of part III in FIG. FIG. 4 and FIG. 4 are sectional views taken along the line IV-IV in FIG. 10 ... Fuel tank, 12 ... Supply conduit, 14 ... Internal combustion engine,
16 ... Fuel supply device, 18 ... Casing, 20, 22 ... Casing cover, 24 ... Suction pipe piece, 26 ... Discharge pipe piece, 28
...... Supply pump, 30 …… armature shaft, 32 …… Overpressure valve, 34 ……
… Arrow, 36… Auxiliary pump stage, 38… Main pump stage, 40…
… Discharge chamber, 44 …… Closing member, 46 …… Projection part, 48 …… Collar, 50 …… Support shoulder, 51 …… Compression spring, 52 …… Support part, 54 …… Sealing member, 56 …… Valve seat , 60 ... passage, 62 ...
… Conical valve seat, 64 …… sphere, 66 …… Bubble trap part, 70 ……
Closed position, 72 ... Overhang, 74 ... Passage
Claims (6)
4）へ供給する燃料供給装置であつて、燃料が通過する
ケーシングを備えており、該ケーシング内には、供給ポ
ンプ及び該ポンプを運転するモータが収容されていると
共に、燃料の流動方向で見て前記供給ポンプ（28）の後
方に該供給ポンプによつて制限された吐出室が形成され
ており、該吐出室が、過圧発生時に開く弁機構を介して
供給ポンプ吸込側へ開放可能であり、前記弁機構の閉鎖
部材は燃料供給装置の平常運転時には、プレロードを負
荷された圧縮ばね（51）によつて閉鎖位置に保持されて
いる形式のものにおいて、 前記閉鎖部材（44）が、前記供給ポンプ（28）の吐出側
を同供給ポンプの吸込側に接続する通路（60）を有して
おり、該通路（60）がその吐出側に、前記弁機構の閉鎖
体（64）のための円錐形弁座（62）を備えており、前記
閉鎖体（64）がやはり通路（60）の吐出側に、閉鎖位置
（70）と開放位置との間で運動可能に配置されているこ
とを特徴とする、燃料を燃料タンクから内燃機関へ供給
する燃料供給装置。1. A fuel is supplied from a fuel tank (10) to an internal combustion engine (1).
4) A fuel supply device for supplying to (4), which is provided with a casing through which the fuel passes, and in which the supply pump and the motor for operating the pump are housed, and which is viewed in the fuel flow direction. And a discharge chamber limited by the supply pump is formed behind the supply pump (28), and the discharge chamber can be opened to the suction side of the supply pump through a valve mechanism that opens when overpressure occurs. The closing member of the valve mechanism is of a type that is held in a closed position by a compression spring (51) loaded with a preload during normal operation of the fuel supply device, wherein the closing member (44) is There is a passage (60) connecting the discharge side of the supply pump (28) to the suction side of the supply pump, and the passage (60) is on the discharge side of the closing body (64) of the valve mechanism. Equipped with a conical valve seat (62) for Supplying fuel from a fuel tank to an internal combustion engine, characterized in that a closing body (64) is also arranged on the discharge side of the passage (60) movably between a closed position (70) and an open position. Fuel supply device.
8）内における燃料の主たる流動方向が水平方向からず
れるように配設されており、かつ前記閉鎖体（64）がそ
の開放位置では、ケーシングの、前記閉鎖部材（44）に
向つて広がつているホツパ状の気泡捕獲部分内に位置し
ている、特許請求の範囲第１項記載の燃料供給装置。2. The fuel supply device comprises the casing (1
8) is arranged so that the main flow direction of the fuel inside is deviated from the horizontal direction, and when the closing body (64) is in its open position, it spreads toward the closing member (44) of the casing. The fuel supply device according to claim 1, wherein the fuel supply device is located in a trapezoidal bubble trapping portion.
いに間隔をおいて配置された、複数のリブ状の張り出し
部（72）を有している、特許請求の範囲第２項記載の燃
料供給装置。3. The second claim according to claim 2, wherein the hopper-shaped bubble-capturing portion (66) has a plurality of rib-shaped protruding portions (72) arranged at intervals. Fuel supply system.
る、特許請求の範囲第１項から第３項までのいずれか１
項記載の燃料供給装置。4. A closure according to any one of claims 1 to 3, characterized in that the closure (64) is formed as a sphere.
The fuel supply device according to the paragraph.
口が、前記燃料タンク（10）内にある、特許請求の範囲
第１項から第４項までのいずれか１項記載の燃料供給装
置。5. The fuel according to any one of claims 1 to 4, wherein the opening of the passage (60) on the suction side of the supply pump is in the fuel tank (10). Supply device.
0）内に配置されている、特許請求の範囲第１項から第
５項までのいずれか１項記載の燃料供給装置。6. The fuel supply device comprises the fuel tank (1
The fuel supply device according to any one of claims 1 to 5, which is arranged in (0).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3540260.1 | 1985-11-13 | ||
| DE19853540260 DE3540260C2 (en) | 1985-11-13 | 1985-11-13 | Unit for delivering fuel from a storage tank to an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62113878A JPS62113878A (en) | 1987-05-25 |
| JPH0694876B2 true JPH0694876B2 (en) | 1994-11-24 |
Family
ID=6285891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26879686A Expired - Lifetime JPH0694876B2 (en) | 1985-11-13 | 1986-11-13 | Fuel supply device for supplying fuel from a fuel tank to an internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0694876B2 (en) |
| DE (1) | DE3540260C2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2618490A1 (en) * | 1987-07-22 | 1989-01-27 | Rivapompe Sa | DEVICE FOR FILTERING AND DEGASSING A SUPPLY FUEL FOR INTERNAL COMBUSTION ENGINE |
| US4856949A (en) * | 1988-10-07 | 1989-08-15 | Toshiaki Shimada | Rotative tool for repairing electrodes for spot welding |
| US4951701A (en) * | 1989-07-17 | 1990-08-28 | Vernay Laboratories, Inc. | Combination air vent and overpressure valve |
| DE4038875A1 (en) * | 1990-08-30 | 1992-03-12 | Vdo Schindling | FUEL SUPPLY UNIT FOR MOTOR VEHICLES |
| US5263459A (en) * | 1992-11-27 | 1993-11-23 | Walbro Corporation | Fuel delivery with self-priming fuel pump |
| DE19618452B4 (en) * | 1996-05-08 | 2005-05-12 | Robert Bosch Gmbh | Aggregate for conveying fuel from a storage tank to an internal combustion engine |
| DE19832827C1 (en) * | 1998-07-21 | 2000-02-24 | Bosch Gmbh Robert | Device for fuel delivery by means of a fuel delivery unit arranged in a housing |
| DE19852235A1 (en) * | 1998-11-12 | 2000-05-18 | Volkswagen Ag | Fuel feed pump with storage container |
| DE19901032A1 (en) * | 1999-01-14 | 2000-07-20 | Pierburg Ag | Electric fuel pump |
| AUPQ726900A0 (en) * | 2000-05-03 | 2000-05-25 | Orbital Engine Company (Australia) Proprietary Limited | In tank fuel pump |
| DE10044609B4 (en) * | 2000-09-09 | 2004-11-04 | Siemens Ag | Fuel delivery unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2700855A1 (en) * | 1977-01-11 | 1978-07-13 | Bosch Gmbh Robert | Electric motor driven vehicle fuel pump - has pump rotor driven from motor shaft using plastic carrier plate |
| DE3344339A1 (en) * | 1983-12-08 | 1985-07-11 | Alfred 3004 Isernhagen Meibes | Reverse-flow prevention device with automatic venting |
-
1985
- 1985-11-13 DE DE19853540260 patent/DE3540260C2/en not_active Expired - Fee Related
-
1986
- 1986-11-13 JP JP26879686A patent/JPH0694876B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE3540260A1 (en) | 1987-05-14 |
| DE3540260C2 (en) | 1995-01-05 |
| JPS62113878A (en) | 1987-05-25 |
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