WO2011127929A1 - Pompe manuelle d'un système de carburant - Google Patents

Pompe manuelle d'un système de carburant Download PDF

Info

Publication number
WO2011127929A1
WO2011127929A1 PCT/DE2011/075082 DE2011075082W WO2011127929A1 WO 2011127929 A1 WO2011127929 A1 WO 2011127929A1 DE 2011075082 W DE2011075082 W DE 2011075082W WO 2011127929 A1 WO2011127929 A1 WO 2011127929A1
Authority
WO
WIPO (PCT)
Prior art keywords
handle
valve
valve carrier
manual feed
feed pump
Prior art date
Application number
PCT/DE2011/075082
Other languages
German (de)
English (en)
Inventor
Wilhelm Ardes
Original Assignee
Hengst Gmbh & Co. Kg
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 Hengst Gmbh & Co. Kg filed Critical Hengst Gmbh & Co. Kg
Publication of WO2011127929A1 publication Critical patent/WO2011127929A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation
    • 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
    • F02M37/16—Feeding by means of driven pumps characterised by provision of personally-, e.g. manually-, operated pumps

Definitions

  • the invention relates to a manual feed pump for fuel, according to the preamble of claim 1.
  • Manual feed pumps are basically known from the field of internal combustion engines, in particular in the field of diesel engines, whereby they serve for bleeding the fuel system. Such vents are for example after
  • valve arrangement of the manual feed pump is in the flow path of the fuel and thus represents a flow resistance for the fuel.
  • the manual feed pump is located on the suction side of the fuel system and this intake side is critical with regard to differential pressures.
  • the transverse bore creates a direct connection from the inlet opening to the outlet opening, so that the two check valves of the valve arrangement are bypassed in the manner of a short circuit and a low-resistance flow of the fuel is made possible.
  • the transverse bore is brought into a blocking position in which the mentioned short circuit is interrupted, so that now the valve assembly is in the working position of the hand pump, in which the two check valves are flowed through.
  • the rotational mobility of the post is used exclusively to move the valve assembly between its working and its rest position. It must be ensured that in the working position of the mentioned short circuit is reliably interrupted, otherwise the pumping action, which can be achieved manually by means of the handle, is significantly deteriorated and low efficiency results, making the operation of the hand pump very tedious. Such a seal, which creates areas separated from each other around the circumference of the post, is difficult to realize.
  • the invention has the object to improve a generic fuel hand pump to the effect that, if it is not needed for manual pumping of the fuel, provides the lowest possible flow resistance for the subsidized by the hand pump fuel and small structural dimensions and a high pump power when operating the handle allows.
  • the invention proposes to design the valve carrier and the two non-return valves to be movable insofar as they can only be brought into a working position in which they are flowed through by the fuel when the manual feed pump is required for manual pumping of fuel , Subsequently, however, when the engine's own fuel pump delivers the fuel through the hand feed pump, the valve assembly with the two check valves can assume a so-called home position in which the fuel can flow past the valve assembly without having to flow through the check valves. so that the lowest possible differential pressure flow of the fuel is possible.
  • valve carrier in a first operating mode, namely, when the fuel is being delivered by engine, the valve carrier is removed from the region of the fuel flow line, so that the fuel
  • valve carrier In a second mode, namely, when the fuel is conveyed by means of the handle, the valve carrier is removed from the area of the pump mechanism, so that the manual actuation of the manual feed pump is not hindered. A separate room, in which the valve carrier is constantly, is not required.
  • the manual feed pumps usually have a handle which is similar to a lid or a cap and which is movable in the axial direction back and forth, so that by this oscillating operation of the handle, the manual winningteen tion of the fuel takes place.
  • Hand pump with good efficiency can be manually operated.
  • the handle may be advantageous in this axial direction for performing a pump stroke relative to
  • the handle can be rotatably connected to the valve carrier.
  • This can be done, for example, by complementary ribs which are provided on the one hand on the handle and on the other hand on the valve carrier and which extend in the axial direction so that the axial relative movement is ensured, however, a rotationally fixed connection between the two components is possible.
  • the valve carrier can be axially adjustably mounted via a thread, so that by appropriate
  • Rotary movement of the handle of the valve carrier can be adjusted in the axial direction and can be adjusted in this way between its rest position and its working position.
  • the manual pump action of the manual feed pump can be constructed in a manner known per se by actuating the handle.
  • valve carrier and the handle are exclusively axially movable, wherein in a first section of the axial stroke which the handle performs, the valve carrier is entrained by the hand pump ,
  • a spring is provided between the two components, so that when pressure is applied to the Handle this compressive force is transmitted via the spring on the valve carrier and together with the handle and the valve carrier is moved axially until it has been moved from its rest position to the working position.
  • the continuation of the movement of the handle, the mentioned spring between the two components are compressed, so that now the handle is movable relative to the valve carrier and the actual pump stroke can be performed, which causes the pumping action of the hand pump.
  • the above-mentioned spring is initially relaxed in the rearward movement of the handle, which is provided between the handle and the valve carrier and an attentive user of the manual feed pump will now reverse the direction of movement and, as long as the valve carrier is still in its working position is again carry out the next pump stroke.
  • the handle can be moved back so far that the valve carrier from its working position again, for example, spring-assisted, is moved to its rest position, so that in a further reversal of motion of the handle initially the pump ineffective idle stroke of the handle must be performed, the Valve carrier spends from the rest position to its working position and only then leads to a further movement of the handle to a new, second pump stroke.
  • the valve carrier is held in its working position by a latching element.
  • the above-described detent element it may preferably be provided that even without a solution triggered by the user of the detent, this detent element is reliably, namely automatically, transferred from its detent position into a release position. This ensures that after completion of the manual pump action, the valve carrier does not interfere with the flow path of the fuel, but, after automatic release of the catch, can be reliably and automatically moved back from its working position to its rest position, for example, spring assisted.
  • this restoring movement of the locking element takes place attenuated into its release position, so that this movement takes a sufficiently long time to avoid the above-mentioned idle strokes of the handle. That is: In a regular oscillating reciprocating motion of the handle, as is usually performed by a user in the operation of the manual feed pump, the valve carrier remains in its working position, since the holding the valve carrier in the working position locking element not fast enough from its rest position is returned to the release position.
  • a number of solutions are known to the person skilled in the art for such a retarded or damped restoring of the detent element.
  • the detent element can interact with a corresponding detent surface, wherein the two contacting surfaces have a bevel so that the detent element slowly slides back out of the detent position, in particular then If the manual feed pump is exposed to vibrations, such as those caused by the running of the associated diesel engine, so that at the latest when the diesel engine is started, the valve carrier is returned to its rest position and a low-resistance flow path for the fuel is ensured.
  • the latching element for example, at the end of a pivoting Baren levers is arranged, that is designed as a latching hook and that the pivoting movement of this latching hook is slowed down over a commercial and common in automotive silicone filled rotary damper.
  • Fig. 7-9 is a longitudinal section through a third embodiment, also in three different operating conditions, and
  • Fig. 10 shows a cross section in height of the handle by the third embodiment.
  • a manual feed pump as a whole, which has a housing 2, a housing 2 as a lid over-reaching handle 3 and a valve carrier 4, wherein the valve carrier 4 carries two check valves 5 and 6 and at its lower end a Seal 7, which is designed in the illustrated embodiment as a circumferential sealing collar and cooperates with a sealing seat 8, which is formed as a circumferential inclined surface of the housing 2.
  • An inlet opening 9 is provided at the bottom of the housing 2 and an outlet opening 10 leads laterally to the right out of the housing 2.
  • a return spring 1 1 is provided, which seeks to urge the valve carrier 4 in its rest position shown in Fig. 1. Furthermore is between the valve carrier 4 and the handle 3, a spring 12 is provided, through which the handle 3 is raised relative to the valve carrier 4 upwards.
  • a seal between the handle 3 and the housing 2 is made by a circumferential seal, which is configured in the illustrated embodiment as an O-ring 14.
  • the handle 3 is relieved, so that the spring 12 is relaxed and a relative movement between the handle 3 and the valve carrier 4 takes place, by which the volume of the pump chamber 15 is increased.
  • the resulting negative pressure within the pump chamber 15 causes da right-way check valve 6 fixed to the valve carrier. 4 is applied, that is, closes while the lower check valve 5 is opened, so that through the inlet port 9 fuel can flow into the pump chamber 15.
  • Fig. 4 shows a longitudinal section through a second embodiment, are characterized in the same components as in the first embodiment with the same reference numerals as in the first embodiment of FIGS. 1 to 3.
  • the differences between the two embodiments relate, inter alia, that instead of an O Ring a seal between the handle 3 and the housing 2 is provided by a profile sealing ring 16, and that the seal 7 of the valve support 4 is formed in this second embodiment by an O-ring.
  • Fig. 4 the rest position of the valve carrier 4 is shown, in which the seal 7 is removed from the associated sealing seat 8, so that in this position fuel low resistance, ie without an undesirably large differential pressure, from the inlet opening 9, bypassing the two check valves. 5 and 6 can flow to the outlet opening 10.
  • ribs 17 which are provided on the one hand on the handle 3 and on the other hand on the valve carrier 4, a rotationally fixed connection between the handle 3 and the valve carrier 4 is effected, however, allows an axial relative mobility between these two components.
  • the valve carrier 4 is held vertically adjustable on the housing 2 via a thread 18.
  • a flow through the manual feed pump 1 is now only possible through the valve arrangement, which is formed by the valve carrier 4 and the two check valves 5 and 6.
  • Fig. 5 the different ribs 17 can be seen, which are formed on the one hand by the handle 3 and the other part of the valve carrier 4 and which form the rotationally fixed connection between the handle 3 and the valve carrier 4.
  • Fig. 5 also shows the vertical distance between the lower edge of the handle 3 and the housing 2 can be seen.
  • the handle 3 can now be lowered into a position shown in FIG. 6, so that the volume of the pump chamber 15 is reduced and fuel flow from the pump chamber 15 through the lower check valve 6 in the lower region of the housing 2 can and can flow from this through a filter element 19 to the outlet opening 10.
  • the handle 3 is not upwards be moved without rotating the handle 3 and thereby use the thread 18 for height adjustment, so that reliably avoided in this embodiment, the so-called idle strokes of the manual feed pump 1, which otherwise serve in the first embodiment of Figures 1 to 3 to move the valve carrier between its rest position and its working position.
  • a cover 20 is provided at the bottom of the housing, so that when the cover 20 is dissolved, a change of the filter element 19 can take place.
  • the flow direction of the manual feed pump 1 can be reversed if necessary by simultaneous reverse clip both check valves 5, 6 in the valve carrier 4 in a simple manner.
  • an adapter 21 is provided between the housing 2 and the valve carrier 4, which is fixed to the housing 2 and the thread 18 has.
  • a complex shape of the housing interior can be realized without having to consider the configuration of the thread 18 directly in the housing 2, since the thread 18 is indeed provided by the adapter 21.
  • the thread 18 has a very large pitch, so that with a rotation of less than 360 ° of the valve carrier 4 between the rest and the working position of the manual feed pump 1 can be moved back and forth.
  • the thread 18 is configured slaughter immunosensitis due to its large pitch.
  • On the circumference of the valve carrier 4 four mutually offset by 90 ° threaded finger 25 are provided, of which the two recognizable in the drawings threaded finger 25 in one, and the two transverse thereto arranged threaded finger engage in the other thread, so that the Valve carrier 4 tilt-proof and thus secured against tilting in the adapter 21 is guided.
  • the rest and working positions are spaced apart in the axial direction in which the handle 3 is moved for manual pumping.
  • the rotational movement is therefore to move by means of the adapter 21 and its thread 18, the valve carrier 4 axially between the rest and the working position.
  • valve assembly In Fig. 7, the valve assembly is in its raised rest position. From the inlet opening 9, the fuel can flow freely below the check valve 6 in the filter element 19, it flow radially outwardly, and flow through the outlet opening, which is not visible in this sectional view, but is in flow communication with the annular space, which is radially out of the filter element 19 can be seen.
  • the other check valve 5 is visible at the top right.
  • valve assembly In Fig. 8, the valve assembly is in its lowered working position.
  • the handle is rotated in comparison to Fig. 7 by 180 °, and the check valve 5 is now visible at the top left.
  • the valve carrier 4 Due to the large thread pitch of the adapter 21, the valve carrier 4 has been lowered so far that it closes the wide inlet opening in the filter element 19.
  • Fig. 9 also illustrates the working position of the valve assembly.
  • the handle 3 is axially oscillating between a raised position shown in FIG. 8 and a lowered position shown in FIG. 9.
  • fuel flows through the inlet opening 9 and the first check valve 5 into the pump space above the filter element 19 and automatically opens the first check valve 5 configured as umbrella valve.
  • the handle 3 is subsequently pressed, the first return closes.
  • check valve 5 automatically and the second check valve 6 opens to allow the fuel to flow into the filter element 19. From the filter element 19 the fuel reaches the outlet opening as described above during further pumping.
  • Fig. 10 shows a cross section through the handle 3 and the valve carrier 4, wherein the cutting plane is above the adapter 21.
  • the handle 3 has approximately centrally a downwardly extending in the axial direction driving pin 23 which engages positively in the valve carrier 4.
  • the adapter 21 is below a recognizable also in Figs. 7 to 9 annular surface 24 of the valve carrier and is therefore not visible in Fig. 10.
  • the housing 2 is expanded to a mounting flange 22, which serves to attach the entire manual feed pump 1, which has the fuel filter with the filter element 19 and the actual pump unit.
  • the housing 2 further forms four sockets 26, one of which is in communication with the inlet opening 9 and one with the outlet opening.
  • interchangeable inserts can be selectively inserted or removed in the injection mold in which the housing 2 is manufactured, so that different flow paths for the fuel are created.
  • the housing 2 is thus designed as a universal housing, which, as a result of these simple changes in the production, is subject to different installation situations can be adjusted, for example, whether the flow direction of the fuel at the mounting point, which is provided for the manual feed pump 1, from right to left or vice versa.
  • the housing 2 always produce the same without setting the flow paths for the fuel during the injection molding process.
  • it can be determined by assembly of sealing plug which of the four connecting pieces 26 remain free and should be used as flow sections of the fuel line. This can be provided for example in manual feed pumps 1, which are traded as a spare part, so that production and storage is simplified, the customer can easily adapt the universal housing to the individual situation that exists in his internal combustion engine or in the engine compartment of his vehicle.

Abstract

L'invention concerne une pompe de refoulement manuelle de carburant, avec un boîtier ayant une ouverture d'entrée et une ouverture de sortie, et avec un agencement de soupapes qui comprend deux clapets anti-retour et un support de soupape portant les clapets anti-retour. L'agencement de soupapes est disposé entre l'ouverture d'entrée et l'ouverture de sortie. La pompe selon l'invention comprend également un élément de pompe pouvant être actionné manuellement au moyen d'une poignée, qui, lors de son actionnement, provoque un afflux de carburant à travers l'agencement de soupapes. L'agencement de soupapes est déplaçable dans une position de repos dans laquelle une voie d'écoulement est créée depuis l'ouverture d'entrée jusqu'à l'ouverture de sortie, passe devant l'agencement de soupapes en contournant les clapets anti-retour, et l'agencement de soupapes est déplaçable dans une position de travail dans laquelle le support de soupape interrompt ladite voie d'écoulement et dans laquelle un flux de carburant s'écoule de l'ouverture d'entrée à l'ouverture de sortie à travers les deux clapets anti-retour. La poignée est déplaçable d'avant en arrière de manière oscillante, et le support de soupape est déplaçable entre sa position de repos et sa position de travail dans la direction de déplacement de la poignée actionnant le pompage.
PCT/DE2011/075082 2010-04-16 2011-04-18 Pompe manuelle d'un système de carburant WO2011127929A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010016480 DE102010016480A1 (de) 2010-04-16 2010-04-16 Handpumpe eines Kraftstoffsystems
DE102010016480.1 2010-04-16

Publications (1)

Publication Number Publication Date
WO2011127929A1 true WO2011127929A1 (fr) 2011-10-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2011/075082 WO2011127929A1 (fr) 2010-04-16 2011-04-18 Pompe manuelle d'un système de carburant

Country Status (2)

Country Link
DE (1) DE102010016480A1 (fr)
WO (1) WO2011127929A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150052855A1 (en) * 2012-03-16 2015-02-26 Boru International Co., Ltd. Vacuum apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015012556A1 (de) 2015-09-25 2017-03-30 Hydac Fluidcarecenter Gmbh Filtervorrichtung, insbesondere vergesehen für den Einsatz bei Diesel-Kraftstoffen

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DD131869A5 (de) * 1977-05-21 1978-07-26 Lucas Industries Ltd Fluessigkeitsverdraengungsvorrichtung
DE3203635C1 (de) * 1982-02-03 1983-03-31 Knecht Filterwerke Gmbh, 7000 Stuttgart Hilfspumpe zum manuellen Füllen des Kraftstoffsystems eines Einspritz-Verbrennungsmotors
GB2114237A (en) * 1982-01-23 1983-08-17 Lucas Ind Plc Fuel treatment device
EP0890385A2 (fr) * 1997-07-10 1999-01-13 Stanadyne Automotive Corp. Ensemble filtrant à cartouche avec pompe d'amorçage activable manuellement
DE102006003065A1 (de) 2005-01-21 2006-07-27 Fleetguard, Inc., Nashville Ansaugpumpe, Flüssigkeitsfördersystem und Verfahren zum Betreiben einer Ansaugpumpe
DE202008007721U1 (de) * 2008-06-10 2009-10-22 Mann+Hummel Gmbh Handpumpe zum Pumpen von Kraftstoff

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US3500759A (en) * 1968-06-13 1970-03-17 Caterpillar Tractor Co Fuel priming pump
DE3534485A1 (de) * 1985-09-27 1987-04-02 Bosch Gmbh Robert Handbetaetigbare pumpe fuer foerderpumpen von kraftstoff-einspritzanlagen fuer brennkraftmaschinen
US5256040A (en) * 1992-10-09 1993-10-26 Davco Manufacturing Corp. Priming pump valve
ES2329279T3 (es) * 2006-11-23 2009-11-24 Willibrord Losing Filterproduktion Gmbh Bomba para un medio fluido, especialmente para su utilizacion manual en motores de combustion interna que funcionan con gasoleo.
DE202008005216U1 (de) * 2008-04-15 2009-08-27 Mann + Hummel Gmbh Handpumpe zum Pumpen von Kraftstoff
DE202008007700U1 (de) * 2008-06-10 2009-10-22 Mann+Hummel Gmbh Handpumpe zum Pumpen von Kraftstoff

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD131869A5 (de) * 1977-05-21 1978-07-26 Lucas Industries Ltd Fluessigkeitsverdraengungsvorrichtung
GB2114237A (en) * 1982-01-23 1983-08-17 Lucas Ind Plc Fuel treatment device
DE3203635C1 (de) * 1982-02-03 1983-03-31 Knecht Filterwerke Gmbh, 7000 Stuttgart Hilfspumpe zum manuellen Füllen des Kraftstoffsystems eines Einspritz-Verbrennungsmotors
EP0890385A2 (fr) * 1997-07-10 1999-01-13 Stanadyne Automotive Corp. Ensemble filtrant à cartouche avec pompe d'amorçage activable manuellement
DE102006003065A1 (de) 2005-01-21 2006-07-27 Fleetguard, Inc., Nashville Ansaugpumpe, Flüssigkeitsfördersystem und Verfahren zum Betreiben einer Ansaugpumpe
DE202008007721U1 (de) * 2008-06-10 2009-10-22 Mann+Hummel Gmbh Handpumpe zum Pumpen von Kraftstoff

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150052855A1 (en) * 2012-03-16 2015-02-26 Boru International Co., Ltd. Vacuum apparatus
US9790933B2 (en) * 2012-03-16 2017-10-17 Boru International Co., Ltd. Vacuum apparatus

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