FR2984413A1 - Pumping installation for e.g. internal combustion engine of car, has inlet shaft rotatably moved around axis extending along longitudinal direction and carrying radial cam, which is adapted to drive moving part - Google Patents

Pumping installation for e.g. internal combustion engine of car, has inlet shaft rotatably moved around axis extending along longitudinal direction and carrying radial cam, which is adapted to drive moving part Download PDF

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Publication number
FR2984413A1
FR2984413A1 FR1162088A FR1162088A FR2984413A1 FR 2984413 A1 FR2984413 A1 FR 2984413A1 FR 1162088 A FR1162088 A FR 1162088A FR 1162088 A FR1162088 A FR 1162088A FR 2984413 A1 FR2984413 A1 FR 2984413A1
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FR
France
Prior art keywords
pump
longitudinal direction
internal combustion
pumping unit
input shaft
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.)
Withdrawn
Application number
FR1162088A
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French (fr)
Inventor
Jean Marie Sauvage
Jean Luc Briard
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PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Priority to FR1162088A priority Critical patent/FR2984413A1/en
Publication of FR2984413A1 publication Critical patent/FR2984413A1/en
Withdrawn legal-status Critical Current

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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
    • F02M37/14—Feeding by means of driven pumps the pumps being combined with other apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • F04B23/103—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being a radial piston pump
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/12—Combinations of two or more pumps the pumps being of different types at least one pump being of the rotary-piston positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for 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
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/043—Arrangements for driving reciprocating piston-type pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The installation (2) has a pump (4) e.g. fuel piston pump such as petrol piston pump, and another pump (8) e.g. vane vacuum pump including respective moving parts (6), where one of the parts is a piston. An inlet shaft (12) is extended along longitudinal direction and adapted to drive the moving parts. The shaft is rotatably moved around an axis extending along the longitudinal direction, and carries a radial cam (14), which is adapted to drive one of the moving parts. A casing defines walls for the pumps and protects the shaft, and ensures sealing of the pumps. An independent claim is also included for a car engine.

Description

9844 13 1 GROUPE DE POMPAGE D'UN MOTEUR A COMBUSTION INTERNE [1] L'invention concerne un groupe de pompage d'un moteur, notamment à combustion interne ou électrique ou hybride, d'un véhicule, notamment d'un véhicule automobile. On comprend par hybride le moyen de propulsion utilisant à la fois un moteur à combustion interne et une machine électrique. [2] De façon connue, les moteurs, par exemple à combustion interne, comprennent des systèmes de pompage annexes, mis en mouvement par le moteur. Ces systèmes de pompage incluent par exemple une pompe à vide, utilisée dans un circuit de freinage hydraulique, ou encore une pompe de carburant, utilisée dans un circuit d'alimentation de carburant du moteur. Il peut aussi s'agir de pompe à huile ou à eau. Cette pompe de carburant est typiquement placée au-dessus d'une came radiale d'un arbre à cames du moteur, et s'étend radialement par rapport à l'arbre à cames. Cette pompe de carburant est ainsi configurée de façon à être actionnée par la rotation de la came radiale. Cela permet de circuler le carburant dans le circuit d'alimentation de manière synchronisée avec cycle de combustion du moteur. [3] La réunion de plusieurs pompes au sein d'un même groupe de pompage peut permettre de réduire leur encombrement. Par exemple, le document DE-2444799 décrit un groupe de pompage comprenant une première et une seconde pompe à membrane, dont les parties mobiles sont entraînées par un arbre d'entrée. Cependant, le déplacement des parties mobiles des deux pompes est alors obligatoirement être synchronisé, ce qui limite l'emploi de ces pompes. [004] L'invention vise à résoudre les différents inconvénients. [005] Selon un premier aspect, l'invention porte sur un groupe de pompage d'un moteur, notamment à combustion interne électrique ou hybride, d'un véhicule automobile, comprenant : - une première pompe comprenant une première partie mobile ; - une seconde pompe comprenant une seconde partie mobile ; - un arbre d'entrée s'étendant selon une direction longitudinale et adapté à entraîner les première et seconde parties mobiles ; dans lequel l'arbre d'entrée est mobile en rotation autour d'un axe s'étendant selon la direction longitudinale et porte une came qui est adaptée à entraîner la première partie mobile. [006] Ainsi, la présence d'une came permet d'avoir une activation non simultanée des deux pompes, et donc d'avoir deux pompes ayant des emplois différents. [7] Selon un mode de réalisation de l'invention, la première pompe est une pompe carburant, du type à essence, à piston, dont la première partie mobile est un piston. [8] De ce fait, en plaçant l'arbre d'entrée dans le prolongement d'un arbre à cames d'un moteur, il est possible de maintenir la synchronisation de la pompe à essence avec le cycle de combustion du moteur du type moteur à combustion interne, et de placer la pompe à essence hors de la zone du moteur, ce qui donne un plus grand nombre de choix d'orientation de cette pompe par rapport à l'arbre à cames, et permet in fine de réduire l'encombrement au-dessus du moteur. [9] Selon un autre mode de réalisation de l'invention, la seconde pompe est une pompe à vide à palette. [0010] D'autres types de pompes peuvent être utilisées dans la présente invention, comme les pompes à huile ou à eau. [0011] Selon un autre mode de réalisation de l'invention, une extrémité axiale de l'arbre d'entrée est adaptée à entraîner la seconde partie mobile de la seconde pompe. [0012] Selon un second aspect, l'invention porte sur un moteur, notamment à combustion interne ou électrique ou hybride, d'un véhicule de type automobile, comprenant un arbre à cames et un groupe de pompage conforme au premier aspect de l'invention, l'arbre d'entrée du groupe de pompage étant solidarisé à une extrémité de l'arbre à cames de façon à prolonger cet arbre dans la direction longitudinale. [0013] Selon un troisième aspect, l'invention porte sur un véhicule automobile comprenant un moteur selon le second aspect de l'invention. [0014] D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels : - la figure 1 illustre un groupe de pompage conforme à un mode de réalisation de la présente invention, vu en perspective depuis l'arbre d'entrée de ce groupe ; - la figure 2 illustre le même groupe de pompage qu'à la figure 1, vu en perspective depuis la seconde pompe formée par une pompe à palette, la pompe à palette étant illustrée sans capot ; - la figure 3 schématise un véhicule automobile comprenant un moteur et le groupe de pompage de la figure 1 ; et - la figure 4 illustre le même groupe de pompage qu'à la figure 1, relié à un arbre à cames d'un moteur. [0015] Sur ces figures, les mêmes références sont utilisées pour désigner les mêmes éléments. [0016] Dans la suite de cette description, les caractéristiques et les fonctions bien connues de l'homme de métier ne seront pas décrites en détail. [0017] La figure 1 illustre un groupe de pompage 2 comprenant : - une première pompe 4 ; - une seconde pompe 8 ; - un arbre d'entrée 12. [0018] Dans le présent exemple, la première pompe 4 est une pompe à carburant (essence) configurée pour alimenter un circuit de carburant d'un moteur. Cette première pompe 4 comprend une chambre de pression 9, une première partie mobile 6 se déplaçant dans la chambre de pression 9, et des orifices d'entrée et de sortie débouchant dans cette chambre 9. Ici, la première partie mobile 6 de la première pompe 4 comprend un piston configuré pour être déplacé en translation de manière étanche dans la chambre de pression 9. [0019] Toujours dans le présent exemple, la seconde pompe 8 est une pompe à vide configurée pour alimenter un circuit de freinage. Cette seconde pompe 8 comprend une chambre de dépression, une seconde partie mobile 10 se déplaçant dans la chambre de dépression, et des orifices d'entrée et de sortie débouchant dans cette chambre. Ici la seconde pompe 8 est une pompe à palette à axe excentrique, et la seconde partie mobile 10 comprend un rotor 11 tournant autour de l'axe, et une palette 13 se déplaçant en translation par rapport au rotor 11 lors du mouvement de rotation de ce dernier. [0020] L'arbre d'entrée 12 s'étend selon une direction longitudinale x, et est mobile en rotation autour de cette direction x. Cet arbre d'entrée 12 porte une came radiale 14 qui est adaptée à entraîner la première partie mobile 6 de la première pompe. Le mouvement de rotation de l'arbre d'entrée 12 entraîne la première partie mobile 6 en translation par l'attaque de la came 14 de l'arbre d'entrée 12. Par ailleurs, une première extrémité axiale de l'arbre d'entrée entraîne en rotation la seconde partie mobile 10 de la seconde pompe 8. [0021] Le groupe de pompage 2 possède également un carter 3 qui délimite les parois de la première 4 et de la seconde 8 pompes et protège l'arbre d'entrée 12. Ce carter 3 assure également l'étanchéité de ces deux pompes 4 et 8. Dans cet exemple, le carter 3 est commun aux deux pompes 4 et 8. [0022] La figure 3 représente un véhicule automobile 30, comprenant un moteur 20 configuré pour propulser le véhicule 30, et un groupe de pompage 2. Le moteur 20 comprend un arbre à cames 22 à une extrémité axiale 24 duquel est solidarisé l'arbre d'entrée 12 du groupe de pompage 2, comme représenté en détail sur la figure 4. L'arbre d'entrée 12 s'étend selon la direction longitudinale x, dans le prolongement de l'arbre à cames 22, et est fixé à l'arbre à cames 22 par une seconde extrémité axiale opposée à la première extrémité axiale par laquelle est réalisée la liaison avec la seconde partie mobile 10 de la seconde pompe 8. Cette seconde extrémité axiale de l'arbre d'entrée 12 et l'extrémité correspondante de l'arbre à cames 22 sont configurées de façon à présenter des parties mâles et femelles conjuguées assurant leur solidarité en rotation. The invention relates to a pumping unit for an engine, in particular an internal combustion engine or an electric or hybrid engine, of a vehicle, in particular a motor vehicle. By hybrid means the propulsion means using both an internal combustion engine and an electric machine. [2] In known manner, the engines, for example internal combustion, comprise auxiliary pumping systems, set in motion by the engine. These pumping systems include for example a vacuum pump, used in a hydraulic braking circuit, or a fuel pump, used in a fuel supply circuit of the engine. It can also be an oil or water pump. This fuel pump is typically placed above a radial cam of an engine camshaft, and extends radially with respect to the camshaft. This fuel pump is thus configured to be actuated by the rotation of the radial cam. This makes it possible to circulate the fuel in the supply circuit synchronously with the combustion cycle of the engine. [3] The combination of several pumps within the same pumping unit can reduce their size. For example, DE-2444799 discloses a pumping unit comprising a first and a second diaphragm pump, the moving parts of which are driven by an input shaft. However, the displacement of the moving parts of the two pumps is then necessarily to be synchronized, which limits the use of these pumps. [004] The invention aims to solve the various disadvantages. According to a first aspect, the invention relates to a pumping unit of an engine, in particular an electric or hybrid internal combustion engine, of a motor vehicle, comprising: a first pump comprising a first mobile part; a second pump comprising a second mobile part; - An input shaft extending in a longitudinal direction and adapted to drive the first and second movable parts; wherein the input shaft is rotatable about an axis extending in the longitudinal direction and carries a cam which is adapted to drive the first movable portion. [006] Thus, the presence of a cam makes it possible to have a non-simultaneous activation of the two pumps, and thus to have two pumps having different uses. [7] According to one embodiment of the invention, the first pump is a fuel pump, of the gasoline type, piston, the first movable part is a piston. [8] Therefore, by placing the input shaft in the extension of a camshaft of an engine, it is possible to maintain the timing of the fuel pump with the engine combustion cycle of the type internal combustion engine, and to place the fuel pump out of the engine area, which gives a greater number of choices of orientation of this pump with respect to the camshaft, and ultimately reduces the 'clutter above the engine. [9] According to another embodiment of the invention, the second pump is a pallet vacuum pump. Other types of pumps may be used in the present invention, such as oil or water pumps. According to another embodiment of the invention, an axial end of the input shaft is adapted to drive the second movable part of the second pump. According to a second aspect, the invention relates to an engine, in particular an internal combustion engine or an electric or hybrid engine, comprising a camshaft and a pumping unit according to the first aspect of the invention. invention, the input shaft of the pumping unit being secured to one end of the camshaft so as to extend the shaft in the longitudinal direction. According to a third aspect, the invention relates to a motor vehicle comprising an engine according to the second aspect of the invention. Other features and advantages of the invention will become apparent from the description which is given below, for information only and in no way limitative, with reference to the accompanying drawings, in which: - Figure 1 illustrates a group of pumping according to an embodiment of the present invention, viewed in perspective from the input shaft of this group; FIG. 2 illustrates the same pumping unit as in FIG. 1, seen in perspective from the second pump formed by a vane pump, the vane pump being illustrated without a cover; FIG. 3 schematizes a motor vehicle comprising a motor and the pumping unit of FIG. 1; and FIG. 4 illustrates the same pumping unit as in FIG. 1, connected to a camshaft of an engine. In these figures, the same references are used to designate the same elements. In the following description, the features and functions well known to those skilled in the art will not be described in detail. FIG. 1 illustrates a pumping unit 2 comprising: a first pump 4; a second pump 8; an input shaft 12. In the present example, the first pump 4 is a fuel pump (gasoline) configured to supply a fuel circuit of an engine. This first pump 4 comprises a pressure chamber 9, a first movable part 6 moving in the pressure chamber 9, and inlet and outlet ports opening into this chamber 9. Here, the first movable part 6 of the first pump 4 comprises a piston configured to be moved in translation in a sealed manner in the pressure chamber 9. [0019] Still in the present example, the second pump 8 is a vacuum pump configured to supply a braking circuit. This second pump 8 comprises a vacuum chamber, a second movable portion 10 moving in the vacuum chamber, and inlet and outlet ports opening into this chamber. Here the second pump 8 is an eccentric axis pallet pump, and the second mobile part 10 comprises a rotor 11 rotating about the axis, and a pallet 13 moving in translation relative to the rotor 11 during the rotational movement of the rotor. this last. The input shaft 12 extends in a longitudinal direction x, and is movable in rotation about this direction x. This input shaft 12 carries a radial cam 14 which is adapted to drive the first movable portion 6 of the first pump. The rotational movement of the input shaft 12 drives the first mobile part 6 in translation by the attack of the cam 14 of the input shaft 12. Moreover, a first axial end of the shaft of input rotates the second movable portion 10 of the second pump 8. The pump unit 2 also has a housing 3 which delimits the walls of the first 4 and the second 8 pumps and protects the input shaft 12. This housing 3 also seals these two pumps 4 and 8. In this example, the housing 3 is common to both pumps 4 and 8. [0022] Figure 3 shows a motor vehicle 30, comprising a motor 20 configured to propel the vehicle 30, and a pumping unit 2. The motor 20 comprises a camshaft 22 at an axial end 24 which is secured to the input shaft 12 of the pumping unit 2, as shown in detail on the Figure 4. The input shaft 12 extends in the longitudinal direction the x, in the extension of the camshaft 22, and is fixed to the camshaft 22 by a second axial end opposite the first axial end through which is made the connection with the second movable portion 10 of the second pump 8. This second axial end of the input shaft 12 and the corresponding end of the camshaft 22 are configured to have male and female parts conjugated ensuring their solidarity in rotation.

Claims (6)

REVENDICATIONS1. Groupe de pompage (2) d'un moteur, notamment à combustion interne ou électrique ou hybride, d'un véhicule, notamment de type automobile, comprenant : - une première pompe (4) comprenant une première partie mobile (6) ; - une seconde pompe (8) comprenant une seconde partie mobile (10) ; - un arbre d'entrée (12) s'étendant selon une direction longitudinale et adapté à entraîner les première (6) et seconde (10) parties mobiles ; 10 caractérisé en ce que l'arbre d'entrée (12) est mobile en rotation autour d'un axe s'étendant selon la direction longitudinale et porte une came (14) qui est adaptée à entraîner la première partie mobile (6). REVENDICATIONS1. Pumping unit (2) of an engine, in particular an internal combustion engine or an electric or hybrid engine, of a vehicle, particularly of the automotive type, comprising: - a first pump (4) comprising a first mobile part (6); - a second pump (8) comprising a second movable portion (10); - An input shaft (12) extending in a longitudinal direction and adapted to drive the first (6) and second (10) movable parts; Characterized in that the input shaft (12) is rotatable about an axis extending in the longitudinal direction and carries a cam (14) which is adapted to drive the first movable portion (6). 2. Groupe de pompage (2) selon la revendication 1, dans lequel la première 15 pompe (4) est une pompe à carburant, du type essence, à piston, dont la première partie mobile (6) est un piston. The pumping unit (2) according to claim 1, wherein the first pump (4) is a fuel pump of the gasoline piston type, the first movable portion (6) of which is a piston. 3. Groupe de pompage (2) selon l'une des revendications 1 ou 2, dans lequel la seconde pompe (8) est une pompe à vide à palette. 20 Pumping unit (2) according to one of claims 1 or 2, wherein the second pump (8) is a pallet vacuum pump. 20 4. Groupe de pompage (2) selon l'une des revendications 1 à 3, dans lequel une extrémité axiale de l'arbre d'entrée (12) est adaptée à entraîner la seconde partie mobile (10) de la seconde pompe (8). 25 Pumping unit (2) according to one of claims 1 to 3, wherein one axial end of the input shaft (12) is adapted to drive the second movable part (10) of the second pump (8). ). 25 5. Moteur (20) d'un véhicule automobile comprenant un arbre à cames (22) et un groupe de pompage (2) selon l'une des revendications précédentes, l'arbre d'entrée (12) du groupe de pompage (2) étant solidarisé à une extrémité (24) de l'arbre à cames (22) de façon à prolonger cet arbre dans la direction longitudinale. 30 Motor (20) of a motor vehicle comprising a camshaft (22) and a pumping unit (2) according to one of the preceding claims, the input shaft (12) of the pumping unit (2). ) being secured to one end (24) of the camshaft (22) so as to extend this shaft in the longitudinal direction. 30 6. Véhicule automobile (30) comprenant un moteur (20) selon la revendication 5. A motor vehicle (30) comprising a motor (20) according to claim 5.
FR1162088A 2011-12-20 2011-12-20 Pumping installation for e.g. internal combustion engine of car, has inlet shaft rotatably moved around axis extending along longitudinal direction and carrying radial cam, which is adapted to drive moving part Withdrawn FR2984413A1 (en)

Priority Applications (1)

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FR1162088A FR2984413A1 (en) 2011-12-20 2011-12-20 Pumping installation for e.g. internal combustion engine of car, has inlet shaft rotatably moved around axis extending along longitudinal direction and carrying radial cam, which is adapted to drive moving part

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FR1162088A FR2984413A1 (en) 2011-12-20 2011-12-20 Pumping installation for e.g. internal combustion engine of car, has inlet shaft rotatably moved around axis extending along longitudinal direction and carrying radial cam, which is adapted to drive moving part

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FR2984413A1 true FR2984413A1 (en) 2013-06-21

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FR1162088A Withdrawn FR2984413A1 (en) 2011-12-20 2011-12-20 Pumping installation for e.g. internal combustion engine of car, has inlet shaft rotatably moved around axis extending along longitudinal direction and carrying radial cam, which is adapted to drive moving part

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WO2016059308A1 (en) * 2014-10-16 2016-04-21 Renault S.A.S Device for reducing the rolling motion of a power train and motor vehicle equipped with this device

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DE2444799A1 (en) * 1974-09-19 1976-04-08 Volkswagenwerk Ag Combined fuel lift pump and vacuum pump - has vacuum side with one way connection with induction manifold at slow speed
GB2070685A (en) * 1980-02-08 1981-09-09 Avl Verbrennungskraft Messtech Liquid-cooled direct injection internal combustion engine
DE3122336A1 (en) * 1980-06-06 1982-03-04 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Unit comprising a vacuum air pump for brake boosting and a fuel feed pump in motor vehicles
CN201908763U (en) * 2010-11-30 2011-07-27 长城汽车股份有限公司 Installation seat for fuel pump of automobile engine
DE102010030389A1 (en) * 2010-06-23 2011-12-29 Robert Bosch Gmbh Fuel injection system for use in internal combustion engine in vehicle, has vacuum pump mounted at high pressure pump and driven by cam shaft of high pressure pump, and feed pump mounted at internal combustion engine

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Publication number Priority date Publication date Assignee Title
DE2444799A1 (en) * 1974-09-19 1976-04-08 Volkswagenwerk Ag Combined fuel lift pump and vacuum pump - has vacuum side with one way connection with induction manifold at slow speed
GB2070685A (en) * 1980-02-08 1981-09-09 Avl Verbrennungskraft Messtech Liquid-cooled direct injection internal combustion engine
DE3122336A1 (en) * 1980-06-06 1982-03-04 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Unit comprising a vacuum air pump for brake boosting and a fuel feed pump in motor vehicles
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016059308A1 (en) * 2014-10-16 2016-04-21 Renault S.A.S Device for reducing the rolling motion of a power train and motor vehicle equipped with this device
FR3027363A1 (en) * 2014-10-16 2016-04-22 Renault Sa DEVICE FOR REDUCING THE ROLL OF A MOTOR POWERS GROUP AND A MOTOR VEHICLE EQUIPPED WITH SAID DEVICE

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