CH453795A - Liquid fuel supply device, for internal combustion engines - Google Patents

Liquid fuel supply device, for internal combustion engines

Info

Publication number
CH453795A
CH453795A CH472967A CH472967A CH453795A CH 453795 A CH453795 A CH 453795A CH 472967 A CH472967 A CH 472967A CH 472967 A CH472967 A CH 472967A CH 453795 A CH453795 A CH 453795A
Authority
CH
Switzerland
Prior art keywords
piston
cylinder
ring
supply device
filter
Prior art date
Application number
CH472967A
Other languages
French (fr)
Inventor
Quarret Francois
Original Assignee
Sigma
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 Sigma filed Critical Sigma
Publication of CH453795A publication Critical patent/CH453795A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N99/00—Subject matter not provided for in other groups of this subclass
    • F02N99/002—Starting combustion engines by ignition means
    • F02N99/008—Providing a combustible mixture outside the cylinder
    • 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
    • B01D35/005—Filters specially adapted for use in internal-combustion engine lubrication or fuel systems
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • 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
    • 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
    • F02M37/44—Filters structurally associated with pumps
    • 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
    • F02M37/48—Filters structurally associated with fuel valves
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1037—Flap valves
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F04B53/122—Valves; Arrangement of valves arranged in or on pistons the piston being free-floating, e.g. the valve being formed between the actuating rod and the piston
    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
    • 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
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/43—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel
    • F02M2700/4302—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel whereby air and fuel are sucked into the mixture conduit
    • F02M2700/438—Supply of liquid to a carburettor reservoir with limitation of the liquid level; Aerating devices; Mounting of fuel filters
    • F02M2700/4388—Supply of liquid to a carburettor reservoir with limitation of the liquid level; Aerating devices; Mounting of fuel filters with fuel displacement by a pump

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Description

  

  
 



  Dispositif d'alimentation en combustible liquide,
 pour moteurs à combustion interne
 L'invention a pour objet un dispositif d'alimentation en combustible liquide, pour moteurs à combustion interne, qui comprennent un filtre et une pompe d'amor çage à piston disposés sur le circuit d'aspiration de la pompe d'injection.



   Elle a pour but de rendre ce dispositif tel que la pompe à piston ne gêne pas l'écoulement du combustible lorsqu'elle n'est pas en action.



   Le dispositif d'alimentation conforme à l'invention est caractérisé par le fait que le cylindre de la pompe d'amorçage est incorporé au corps du filtre et le clapet de refoulement de cette pompe à son piston, par le fait qu'est disposée dans l'alignement du cylindre une chambre de dimensions transversales supérieures à celles de ce cylindre et par le fait que des moyens sont prévus pour déplacer le piston à l'intérieur du cylindre lors des opérations d'amorçage et pour immobiliser ce piston à l'intérieur de la chambre en dehors de ces opérations, de façon que le combustible puisse s'écouler librement par l'espace annulaire limité dans cette chambre par le piston après avoir traversé le clapet d'aspiration de la pompe d'amorçage.



   Une forme d'exécution de l'objet de l'invention sera décrite, à titre d'exemple, en se référant au dessin annexé, auquel:
 La fig. 1 est une coupe verticale du dispositif, dans la position correspondant à la mise hors d'action de la pompe.



   Les fig. 2 et 3 montrent, à plus grande échelle, certains éléments de la fig. 1 dans les positions correspondant respectivement aux temps d'aspiration et de refoulement de la pompe d'amorçage.



   Un filtre et une pompe d'amorçage sont disposés entre une canalisation 1 réunie à un réservoir de combustible (non représenté) et une canalisation 2 réunie à l'aspiration de la pompe alimentaire d'une pompe d'injection.



   Le filtre comporte un corps 3 muni de raccords 4 et 5 pour les canalisations 1 et 2 et une cartouche filtrante 6 pouvant être démontée pour nettoyage ou remplacement. La cartouche 6 est maintenue contre le corps 3, par l'intermédiaire d'une cuve de décantation 7, à l'aide d'un écrou de serrage 8 vissé sur une tige filetée 9.



   La pompe d'amorçage est constituée par un cylindre 10 dans lequel peut se déplacer un piston 11 et qui possède un clapet d'aspiration 12 et un clapet de refoulement.



   Le cylindre 10 de la pompe d'amorçage est incorporé au corps 3 du filtre et le clapet de refoulement au piston 11. Dans l'alignement du cylindre 10 se trouve une chambre 13 de diamètre intérieur D supérieur à celui d du cylindre 10.



   Une tige 14 solidaire du corps du piston 11, traverse de façon étanche le corps 3 et est solidaire d'un bouchon 15 vissé dans un taraudage 16 prévu dans le corps 3. La longueur de la tige 14 et celle du taraudage 16 sont telles que, lorsque le bouchon 15 est engagé à fond dans le taraudage 16, le piston   1 1    est situé au-delà du cylindre 10 dans la chambre 13 (fig. 1) mais que, lorsque le bouchon 15 est dégagé du taraudage 16 (fig. 2 et 3), le piston 11 est situé dans le cylindre 10 (fig. 2 et 3). Le cylindre 10 est formé par un alésage ménagé axialement dans le corps 3 et la chambre 13 par une pièce creuse 17 rapportée sur le corps 3, la tige filetée 9 étant fixée à cette pièce 17, comme montré fig. 1.



   Le clapet d'aspiration 12 est disposé dans un embout 18 rapporté sur le corps 3 et comportant le raccord   d'en    trée 4 et est constitué par un disque d'obturation sollicité par un ressort 19.



   Ce clapet de refoulement incorporé dans le piston 11 est constitué par une bague 20 agencée de manière à frotter sur la paroi du cylindre 10, par l'intermédiaire d'un joint torique 21, et pouvant coulisser avec un jeu  axial limité a (fig. 2) sur le corps 22 du piston 11, ce jeu étant tel que, lorsque la bague 20 occupe sa position extrême aval (dans le sens d'écoulement du combustible   dans    le cylindre 10), elle démasque un passage 23 ménagé dans le corps 22 du piston pour faire communiquer entre elles les deux capacités amont et aval qu'il limite dans le cylindre (fig. 2) mais que, lorsque la bague occupe sa position extrême amont, elle masque le passage (fig. 3).

   Le passage axial 23 débouche sur la face aval du corps 22 du piston   1 1    et communique avec au moins des trous radiaux 24 débouchant à la périphérie   du    corps 22 en une zone qui est alternativement recouverte et découverte par la bague 20. Le jeu axial est limité par des saillies annulaires 25 et 26 constituées par des bagues élastiques, les trous radiaux 24 étant situés entre ces saillies 25 et 26 et au voisinage de la saillie supérieure ou amont 25.



   Le fonctionnement du dispositif est le suivant
 Pour amorcer le circuit d'alimentation, on dévisse le bouchon 15, comme montré à la fig. 2, ce qui amène le piston 11 à l'intérieur du cylindre 10. En faisant monter le piston 11, on provoque la fermeture du clapet d'aspiration 12 et l'ouverture du clapet de refoulement. Un volume de combustible égal à celui qui est balayé par le piston passe d'amont en aval du piston, c'est-à-dire de la partie du cylindre 10 située au-dessus du piston à celle qui est située au-dessous. C'est la course morte du cycle schématisée à la fig. 2.

   En faisant descendre ensuite le piston, on provoque la fermeture du clapet de refoulement et l'ouverture du clapet d'aspiration 12, le combustible déplacé par la partie inférieure du piston étant refoulé à travers la cartouche 6 vers la canalisation 2, alors qu'un volume égal de combustible est introduit dans le dispositif à travers le clapet 12. C'est la course utile du cycle schématisé à la fig. 3.



   En faisant monter le piston 11, on entraîne d'abord uniquement son corps 22, la bague 20 étant immobilisée par frottement du joint 21 sur la paroi du cylnidre 10, ce qui démasque les orifices radiaux 24 (fig. 2) et ouvre   donc    le clapet de refoulement. Ce n'est qu'ensuite que la saillie 26 fait accompagner par la bague 20 le déplacement du corps 22. Puis, en faisant descendre le piston 11, on entraîne d'abord uniquement son corps 22, la bague étant immobilisée comme précédemment, ce qui masque les orifices radiaux 24 (fig. 3) et ferme donc le clapet de refoulement, la saillie 25 formant joint d'étanchéité pour la bague 20. Ce n'est qu'après la suppression du jeu a, tel qu'il est indiqué à la fig. 2, que la saillie 25 fait accompagner par la bague 20 le déplacement du corps 22.



   L'amorçage étant réalisé, on visse le bouchon 15 dans le taraudage 16, comme montré à la fig. 1. Le piston 11, dont le diamètre extérieur maximum est égal à celui d du cylindre 10, se trouve dans la chambre 13 de diamètre supérieur D. Le combustible peut alors s'écouler librement par l'espace annulaire limité dans cette chambre par le piston 11, après avoir traversé le clapet d'aspiration 12. Ce dernier sert de clapet de retenue à l'arrêt du moteur et évite le désamorçage du circuit d'ali  indentation    lors d'arrêts relativement longs.
  



  
 



  Liquid fuel supply device,
 for internal combustion engines
 The subject of the invention is a device for supplying liquid fuel, for internal combustion engines, which comprises a filter and a piston priming pump arranged on the suction circuit of the injection pump.



   Its purpose is to make this device such that the piston pump does not obstruct the flow of fuel when it is not in action.



   The supply device according to the invention is characterized by the fact that the cylinder of the priming pump is incorporated into the body of the filter and the delivery valve of this pump to its piston, by the fact that it is arranged in alignment of the cylinder a chamber of transverse dimensions greater than those of this cylinder and by the fact that means are provided to move the piston inside the cylinder during priming operations and to immobilize this piston inside of the chamber outside of these operations, so that the fuel can flow freely through the annular space limited in this chamber by the piston after having passed through the suction valve of the priming pump.



   An embodiment of the object of the invention will be described, by way of example, with reference to the appended drawing, to which:
 Fig. 1 is a vertical section of the device, in the position corresponding to the disabling of the pump.



   Figs. 2 and 3 show, on a larger scale, certain elements of FIG. 1 in the positions corresponding respectively to the suction and delivery times of the priming pump.



   A filter and a priming pump are arranged between a pipe 1 joined to a fuel tank (not shown) and a pipe 2 joined to the suction of the feed pump of an injection pump.



   The filter comprises a body 3 provided with connectors 4 and 5 for pipes 1 and 2 and a filter cartridge 6 which can be removed for cleaning or replacement. The cartridge 6 is held against the body 3, by means of a settling tank 7, by means of a tightening nut 8 screwed on a threaded rod 9.



   The priming pump is formed by a cylinder 10 in which a piston 11 can move and which has a suction valve 12 and a discharge valve.



   The cylinder 10 of the priming pump is incorporated into the body 3 of the filter and the delivery valve to the piston 11. In alignment with the cylinder 10 is a chamber 13 with an internal diameter D greater than that d of the cylinder 10.



   A rod 14 integral with the body of the piston 11, passes through the body 3 in a sealed manner and is integral with a stopper 15 screwed into an internal thread 16 provided in the body 3. The length of the rod 14 and that of the internal thread 16 are such that , when the plug 15 is fully engaged in the thread 16, the piston 1 1 is located beyond the cylinder 10 in the chamber 13 (fig. 1) but that when the plug 15 is released from the thread 16 (fig. 2 and 3), the piston 11 is located in the cylinder 10 (fig. 2 and 3). The cylinder 10 is formed by a bore formed axially in the body 3 and the chamber 13 by a hollow part 17 attached to the body 3, the threaded rod 9 being fixed to this part 17, as shown in FIG. 1.



   The suction valve 12 is arranged in a nozzle 18 attached to the body 3 and comprising the inlet connection 4 and consists of a shutter disc biased by a spring 19.



   This discharge valve incorporated in the piston 11 consists of a ring 20 arranged so as to rub against the wall of the cylinder 10, via an O-ring 21, and which can slide with limited axial play a (fig. 2) on the body 22 of the piston 11, this play being such that, when the ring 20 occupies its extreme downstream position (in the direction of flow of the fuel in the cylinder 10), it unmasks a passage 23 formed in the body 22 of the piston to communicate between them the two upstream and downstream capacities which it limits in the cylinder (fig. 2) but that, when the ring occupies its extreme upstream position, it masks the passage (fig. 3).

   The axial passage 23 opens onto the downstream face of the body 22 of the piston 1 1 and communicates with at least radial holes 24 opening out to the periphery of the body 22 in an area which is alternately covered and uncovered by the ring 20. The axial play is limited by annular projections 25 and 26 formed by elastic rings, the radial holes 24 being located between these projections 25 and 26 and in the vicinity of the upper or upstream projection 25.



   The operation of the device is as follows
 To prime the supply circuit, the cap 15 is unscrewed, as shown in fig. 2, which brings the piston 11 inside the cylinder 10. By causing the piston 11 to rise, the suction valve 12 is closed and the discharge valve opens. A volume of fuel equal to that which is swept by the piston passes from upstream to downstream of the piston, that is to say from the part of the cylinder 10 situated above the piston to that which is situated below. This is the dead travel of the cycle shown schematically in FIG. 2.

   By then lowering the piston, it causes the closing of the discharge valve and the opening of the suction valve 12, the fuel displaced by the lower part of the piston being discharged through the cartridge 6 towards the pipe 2, while an equal volume of fuel is introduced into the device through the valve 12. This is the useful stroke of the cycle shown schematically in FIG. 3.



   By making the piston 11 rise, firstly only its body 22 is driven, the ring 20 being immobilized by friction of the seal 21 on the wall of the cylinder 10, which unmasks the radial orifices 24 (FIG. 2) and therefore opens the valve. discharge valve. It is only then that the projection 26 causes the ring 20 to accompany the displacement of the body 22. Then, by lowering the piston 11, only its body 22 is first driven, the ring being immobilized as before, this which masks the radial orifices 24 (fig. 3) and therefore closes the discharge valve, the projection 25 forming a seal for the ring 20. Only after the clearance a, as it is, has been eliminated. shown in fig. 2, that the projection 25 causes the ring 20 to accompany the displacement of the body 22.



   The priming being carried out, the plug 15 is screwed into the tapping 16, as shown in FIG. 1. The piston 11, the maximum outside diameter of which is equal to that d of the cylinder 10, is located in the chamber 13 of greater diameter D. The fuel can then flow freely through the annular space limited in this chamber by the piston 11, after having passed through the suction valve 12. The latter serves as a check valve when the engine is stopped and prevents the de-priming of the indentation supply circuit during relatively long stops.

Claims (1)

REVENDICATION Dispositif d'alimentation en combustible liquide, pour moteurs à combustion interne, qui comprend un filtre et une pompe d'amorçage à piston disposés sur le circuit d'aspiration de la pompe d'injection, caractérisé par le fait que le cylindre (10) de la pompe d'amorçage est incorporé au corps (3) du filtre et le clapet de refoulement de cette pompe à son piston (11), par le fait qu'est disposée dans l'alignement du cylindre (10) une chambre (13) de dimensions transversales (D) supérieures à celles (d) de ce cylindre (10) et par le fait que des moyens sont prévus pour déplacer le piston (11) à l'intérieur du cylindre (10) lors des opérations d'amorçage et pour immobiliser ce piston (11) à l'intérieur de la chambre (13) en dehors de ces opérations, CLAIM Liquid fuel supply device, for internal combustion engines, which comprises a filter and a piston priming pump arranged on the suction circuit of the injection pump, characterized in that the cylinder (10) of the priming pump is incorporated in the body (3) of the filter and the delivery valve of this pump to its piston (11), by the fact that is arranged in alignment with the cylinder (10) a chamber (13 ) of transverse dimensions (D) greater than those (d) of this cylinder (10) and by the fact that means are provided to move the piston (11) inside the cylinder (10) during priming operations and to immobilize this piston (11) inside the chamber (13) outside of these operations, de façon que le combustible puisse s'écouler librement par l'espace annulaire limité dans cette chambre par le piston après avoir traversé le clapet d'aspiration de la pompe d'amor çage. so that the fuel can flow freely through the annular space limited in this chamber by the piston after passing through the suction valve of the priming pump. SOUS-REVENDICATIONS 1. Disposiitf d'alimentation selon la revendication, caractérisé par le fait que lesdits moyens sont constitués par une tige (14) solidaire du corps (22) du piston (11), traversant de façon étanche le corps (3) du filtre et solidaire d'un bouchon (15) vissé dans un taraudage (16) prévu dans le corps (3) du filtre. SUB-CLAIMS 1. Supply device according to claim, characterized in that said means are constituted by a rod (14) integral with the body (22) of the piston (11), sealingly passing through the body (3) of the filter and integral with a plug (15) screwed into an internal thread (16) provided in the body (3) of the filter. 2. Disposition d'alimentation selon la revendication, caractérisé par le fait que le clapet de refoulement est constitué par une bague (20), agencée de manière à frotter sur la paroi du cylindre (10) et à pouvoir coulisser avec un jeu axial (a) sur le corps (22) du piston (11), ce jeu étant tel que, lorsque la bague (20) occupe sa position extrême aval, elle démasque un passage aménagé dans le corps (22) du piston (11) pour faire com- muniquer entre elles les deux capacités qu'il limite à l'intérieur du cylindre (10) mais que, lorsque la bague (20) occupe sa position extrême amont, elle masque le passage. 2. Supply arrangement according to claim, characterized in that the discharge valve is constituted by a ring (20), arranged so as to rub against the wall of the cylinder (10) and to be able to slide with axial play ( a) on the body (22) of the piston (11), this play being such that, when the ring (20) occupies its extreme downstream position, it unmasks a passage made in the body (22) of the piston (11) to make communicate with each other the two capacities that it limits inside the cylinder (10) but that, when the ring (20) occupies its extreme upstream position, it masks the passage. 3. Dispositif d'alimentation selon la sous-revendication 2, caractérisé par le fait que le passage est formé par un canal axial (23) débouchant sur la face aval du corps (22) du piston (11) et communiquant avec au moins un trou radial (24) débouchant à la périphérie de ce corps (22) en une zone qui est alternativement recouverte et découverte par la bague (20). 3. Supply device according to sub-claim 2, characterized in that the passage is formed by an axial channel (23) opening onto the downstream face of the body (22) of the piston (11) and communicating with at least one radial hole (24) opening out at the periphery of this body (22) in a zone which is alternately covered and uncovered by the ring (20).
CH472967A 1966-04-26 1967-04-03 Liquid fuel supply device, for internal combustion engines CH453795A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR59137A FR1491286A (en) 1966-04-26 1966-04-26 Improvements in liquid fuel supply devices for internal combustion engines

Publications (1)

Publication Number Publication Date
CH453795A true CH453795A (en) 1968-03-31

Family

ID=8607143

Family Applications (1)

Application Number Title Priority Date Filing Date
CH472967A CH453795A (en) 1966-04-26 1967-04-03 Liquid fuel supply device, for internal combustion engines

Country Status (6)

Country Link
BE (1) BE697453A (en)
CH (1) CH453795A (en)
DE (1) DE1576611B1 (en)
ES (1) ES339749A1 (en)
FR (1) FR1491286A (en)
GB (1) GB1157187A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013045165A1 (en) * 2011-09-29 2013-04-04 Hengst Gmbh & Co. Kg Fuel pump assembly
EP2199589A3 (en) * 2008-12-16 2013-04-17 Mahle International GmbH Fuel filter

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1190865A (en) * 1982-02-24 1985-07-23 Michael E. Wilson Filter assembly
US4502955A (en) * 1983-04-14 1985-03-05 Racor Industries, Inc. Filter assembly
DE102008027374A1 (en) * 2008-06-09 2009-12-10 Hengst Gmbh & Co.Kg Filter for equipment of an internal combustion engine, and components of such a filter
DE102012216385A1 (en) * 2012-09-14 2014-03-20 Hengst Gmbh & Co. Kg Replaceable filter element for filter, particularly for fuel or oil filter, has filter material body, valve body of valve and spring pre-stressed to valve body in valve closing direction
DE102015012556A1 (en) * 2015-09-25 2017-03-30 Hydac Fluidcarecenter Gmbh Filter device, in particular for use with diesel fuels

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FR79223E (en) * 1961-02-14 1962-11-09 Prec Mecanique Labinal Priming filter-pump assembly for diesel engine fuel system

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EP2199589A3 (en) * 2008-12-16 2013-04-17 Mahle International GmbH Fuel filter
WO2013045165A1 (en) * 2011-09-29 2013-04-04 Hengst Gmbh & Co. Kg Fuel pump assembly
CN104023813A (en) * 2011-09-29 2014-09-03 汉格斯特欧洲两合公司 Fuel pump assembly
CN104023813B (en) * 2011-09-29 2016-08-17 汉格斯特欧洲两合公司 Fuel pump components
US9951730B2 (en) 2011-09-29 2018-04-24 Hengst Se & Co. Kg Fuel pump assembly

Also Published As

Publication number Publication date
FR1491286A (en) 1967-08-11
BE697453A (en) 1967-10-02
GB1157187A (en) 1969-07-02
DE1576611B1 (en) 1971-12-16
ES339749A1 (en) 1968-05-16

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