DE19513417A1 - Filter arrangement for fuel tank, with bleed bore for air or vapour - Google Patents

Filter arrangement for fuel tank, with bleed bore for air or vapour

Info

Publication number
DE19513417A1
DE19513417A1 DE19513417A DE19513417A DE19513417A1 DE 19513417 A1 DE19513417 A1 DE 19513417A1 DE 19513417 A DE19513417 A DE 19513417A DE 19513417 A DE19513417 A DE 19513417A DE 19513417 A1 DE19513417 A1 DE 19513417A1
Authority
DE
Germany
Prior art keywords
fuel
filter
chamber
air
fuel tank
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
Application number
DE19513417A
Other languages
German (de)
Other versions
DE19513417B4 (en
Inventor
Bernd-Juergen Lahn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Priority to DE19513417A priority Critical patent/DE19513417B4/en
Publication of DE19513417A1 publication Critical patent/DE19513417A1/en
Application granted granted Critical
Publication of DE19513417B4 publication Critical patent/DE19513417B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/26—Filters with built-in pumps filters provided with a pump mounted in or on the casing
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/50—Filters arranged in or on fuel tanks

Abstract

The filter arrangement is fitted to a fuel tank (1), especially in a motor vehicle, and has a chamber (5) with a filter for fuel which is sucked into a fuel pump (3). The surface tension due to moistening by the fuel, allows the filter to block a reverse flow from the chamber, if the fuel level sinks below the filter. A bleed bore (7) for bubbles of air or vapour is arranged at the highest point in the chamber, and this opens into a reserve fuel chamber (8). This chamber may be bounded by an annular wall (9), whose height determines the amount of the fuel reserve.

Description

Die Erfindung betrifft eine Filteranordnung für einen Brennstofftank, wobei das Filter für den von einer Brennstoffpumpe angesaugten Brennstoff durch bei Brennstoffbenetzung vorliegende Oberflächenspannung als Rücklaufsperre wirkt, wenn das Filter aus dem Brennstoff austaucht.The invention relates to a filter arrangement for a fuel tank, the filter for the fuel sucked in by a fuel pump by at Surface wetting acts as backstop, when the filter emerges from the fuel.

Es hat sich gezeigt, daß in dieser Filteranordnung nach entleertem Brennstofftank bzw. Filterkammer bei neuer Füllung eine erhebliche Luftmenge verbleibt, da durch die bei Brennstoffbenetzung vorliegende Rücklaufsperrung diese auch für die in der Filterkammer enthaltene Luft wirkt.It has been shown that in this filter arrangement after the fuel tank is empty or filter chamber with a new filling, a significant amount of air remains because the backstop present with fuel wetting also for those in the Air contained in the filter chamber works.

Diese Luft gelangt ggf. in den Brennstoff, der von der Brennstoffpumpe abgesaugt wird und kann fehlerhaften Betrieb einer Brennkraftmaschine verursachen.This air may get into the fuel that is sucked out by the fuel pump will and can cause incorrect operation of an internal combustion engine.

Es ist bekannt, daß diese Luft durch eine Entlüftungsbohrung abgeführt werden kann.It is known that this air is discharged through a vent hole can.

Da diese Entlüftungsbohrung jedoch auch in umgekehrter Richtung wirkt, hebt sich die Sperrwirkung, die durch das benetzte Filtergewebe erreicht wird, auf. Es kann durch eine aufwendige Ventilanordnung versucht werden, diese Sperrwirkung zu sichern. Hierfür ist jedoch ein erheblicher Aufwand zu betreiben.However, since this vent hole also works in the opposite direction, it rises the blocking effect that is achieved by the wetted filter fabric. It can be attempted by a complex valve arrangement, this locking effect to back up. However, this requires considerable effort.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, Maßnahmen aufzufinden, mit denen eine Entlüftung erreichbar wird, ohne die Sperrwirkung des Filters aufzuheben, wobei auf eine Ventilanordnung verzichtet wird.Proceeding from this, the object of the invention is to implement measures find, with which a ventilation can be achieved without the barrier effect of To remove the filter, dispensing with a valve arrangement.

Diese Aufgabe ist durch die im Patentanspruch genannten, kennzeichnenden Merkmale gelöst worden. This object is characterized by the characterizing in the claim Features have been resolved.  

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben.An embodiment of the invention is shown in the drawing and will described below.

Diese zeigt einen Schnitt durch eine Filteranordnung für einen Brennstofftank, wobei das Filter für den von einer Brennstoffpumpe angesaugten Brennstoff durch bei Brennstoffbenetzung vorliegende Oberflächenspannung als Rücklaufsperre wirkt, wenn das Filter aus dem Brennstoff austaucht.This shows a section through a filter arrangement for a fuel tank, the filter for the fuel drawn by a fuel pump surface tension when fuel is wetted acts as a backstop, when the filter emerges from the fuel.

Diese Filteranordnung ist z. B. verwendbar im Zusammenhang mit einem Speichertopf 4 einer Brennstoffördereinheit, die in den Brennstofftank 1 eines Kraftfahrzeuges einsetzbar ist, d. h. die Brennstoffpumpe 3 saugt den Brennstoff über einen in eine Filterkammer 5 hineinragenden Ansaugstutzen 6 an.This filter arrangement is e.g. B. can be used in connection with a storage pot 4 of a fuel delivery unit that can be used in the fuel tank 1 of a motor vehicle, ie the fuel pump 3 sucks the fuel through a suction pipe 6 protruding into a filter chamber 5 .

Erfindungsgemäß ist nun vorgesehen, daß an der höchstgelegenen Stelle dieser Filterkammer 5 eine Entgasungsbohrung 7 angeordnet ist, die in eine Brennstoffvorratskammer 8 ausmündet.According to the invention it is now provided that a degassing hole 7 is arranged at the highest point of this filter chamber 5 , which opens out into a fuel storage chamber 8 .

Diese Brennstoffvorratskammer 8 kann durch eine Ringwand 9 um die Entgasungsbohrung 7 gebildet sein, deren Höhe den Brennstoffvorrat festlegt.This fuel storage chamber 8 can be formed by an annular wall 9 around the degassing hole 7 , the height of which defines the fuel supply.

Desweiteren wird verhindert, daß bei einer Neigung der Filterkammer 5 die Entgasungsbohrung 7 abtrocknet und somit die Luft/das Gas freien Zutritt zur Filterkammer 5 hat.Furthermore, it is prevented that when the filter chamber 5 is inclined, the degassing bore 7 dries and thus the air / gas has free access to the filter chamber 5 .

Durch Abstimmen der Ringwandhöhe bzw. des Brennstoffvorrats und der Größe der Entgasungsbohrung 7 läßt sich eine ausreichende Entgasung der Filterkammer 5 bei unter Brennstoffspiegel liegender Filteranordnung erreichen und eine ausreichende Rücklaufsperrwirkung, die zeitlich solange aufrechterhalten bleibt, bis die Brennstoffmenge in der Vorratskammer 8 in die Filterkammer 5 abgeflossen ist. By coordinating the ring wall height or the fuel supply and the size of the degassing hole 7 , sufficient degassing of the filter chamber 5 can be achieved with a filter arrangement below the fuel level and a sufficient anti-return effect that is maintained over time until the amount of fuel in the storage chamber 8 into the filter chamber 5 has flowed off.

Hinzu kommt eine Sperrwirkung an der Entgasungsbohrung 7 infolge der Oberflächenspannung, solange diese nur behetzt ist und verhindert dadurch ein Nachströmen von Gas/Luft durch die Entgasungsbohrung 7 in die Filterkammer 5, nachdem die Brennstoffmenge in der Vorratskammer 8 aufgebraucht ist. In addition, there is a blocking effect on the degassing bore 7 as a result of the surface tension, as long as it is only blocked, and thereby prevents gas / air from flowing through the degassing bore 7 into the filter chamber 5 after the amount of fuel in the storage chamber 8 has been used up.

Mit der Filteranordnung nach der Erfindung liegt eine leicht anwendbare Ausführung vor, die auch für Entlüftungsbohrungen von Systemen Verwendung finden kann, die unter dem Brennstoffspiegel liegen und entlüftet werden müssen und bei denen eine Rücklaufsperre erforderlich ist, beispielsweise wenn die Brennstoffördereinheit mit Vorpumpe und Zwischenspeicher arbeitet.With the filter arrangement according to the invention is an easily applicable version which can also be used for ventilation holes in systems, which are below the fuel level and need to be vented and where a backstop is required, for example when the fuel delivery unit works with backing pump and buffer.

Claims (1)

Filteranordnung für einen Brennstofftank, wobei das Filter für den von einer Brennstoffpumpe angesaugten Brennstoff durch bei Brennstoffbenetzung vorliegende Oberflächenspannung als Rücklaufsperre wirkt, wenn das Filter aus dem Brennstoff austaucht, dadurch gekennzeichnet, daß an der höchstgelegenen Stelle einer Filterkammer (5) eine Entgasungsbohrung (7) angeordnet ist, die in eine Brennstoffvorratskammer (8) ausmündet.Filter arrangement for a fuel tank, the filter for the fuel drawn in by a fuel pump acting as a backstop when the filter emerges from the fuel due to surface tension when the fuel is wetted, characterized in that a degassing hole ( 7 ) is located at the highest point of a filter chamber ( 5 ). is arranged, which opens into a fuel storage chamber ( 8 ).
DE19513417A 1995-04-08 1995-04-08 A filter assembly Expired - Fee Related DE19513417B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19513417A DE19513417B4 (en) 1995-04-08 1995-04-08 A filter assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19513417A DE19513417B4 (en) 1995-04-08 1995-04-08 A filter assembly

Publications (2)

Publication Number Publication Date
DE19513417A1 true DE19513417A1 (en) 1996-10-10
DE19513417B4 DE19513417B4 (en) 2004-04-22

Family

ID=7759285

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19513417A Expired - Fee Related DE19513417B4 (en) 1995-04-08 1995-04-08 A filter assembly

Country Status (1)

Country Link
DE (1) DE19513417B4 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777603A1 (en) * 1998-04-21 1999-10-22 Marwal Systems FUEL PUMP DEVICE COMPRISING AN IMPROVED RESERVE
FR2777601A1 (en) * 1998-04-21 1999-10-22 Marwal Systems Motor vehicle fuel tank pump
FR2777602A1 (en) * 1998-04-21 1999-10-22 Marwal Systems Motor vehicle fuel tank pump
DE19915255B4 (en) * 1999-04-03 2004-04-08 Robert Bosch Gmbh Conveying device for fuel
EP1447554A1 (en) * 2001-11-20 2004-08-18 Keihin Corporation Westoco type fuel pump

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602605A (en) * 1984-02-06 1986-07-29 Adkins James L Entering fuel injection system of a diesel engine
JPS63306271A (en) * 1987-06-09 1988-12-14 Mitsuba Electric Mfg Co Ltd Fuel feeder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777603A1 (en) * 1998-04-21 1999-10-22 Marwal Systems FUEL PUMP DEVICE COMPRISING AN IMPROVED RESERVE
FR2777601A1 (en) * 1998-04-21 1999-10-22 Marwal Systems Motor vehicle fuel tank pump
FR2777602A1 (en) * 1998-04-21 1999-10-22 Marwal Systems Motor vehicle fuel tank pump
DE19915255B4 (en) * 1999-04-03 2004-04-08 Robert Bosch Gmbh Conveying device for fuel
EP1447554A1 (en) * 2001-11-20 2004-08-18 Keihin Corporation Westoco type fuel pump
EP1447554A4 (en) * 2001-11-20 2010-03-31 Keihin Corp Westoco type fuel pump

Also Published As

Publication number Publication date
DE19513417B4 (en) 2004-04-22

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: PIERBURG GMBH, 41460 NEUSS, DE

8127 New person/name/address of the applicant

Owner name: TI AUTOMOTIVE (NEUSS) GMBH, 41460 NEUSS, DE

8364 No opposition during term of opposition
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20121101