EP0922850B1 - Système d'alimentation en carburant - Google Patents

Système d'alimentation en carburant Download PDF

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Publication number
EP0922850B1
EP0922850B1 EP98123109A EP98123109A EP0922850B1 EP 0922850 B1 EP0922850 B1 EP 0922850B1 EP 98123109 A EP98123109 A EP 98123109A EP 98123109 A EP98123109 A EP 98123109A EP 0922850 B1 EP0922850 B1 EP 0922850B1
Authority
EP
European Patent Office
Prior art keywords
fuel
pressure regulator
filter
supply system
throttle device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98123109A
Other languages
German (de)
English (en)
Other versions
EP0922850A2 (fr
EP0922850A3 (fr
Inventor
Rolf Schmidt
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0922850A2 publication Critical patent/EP0922850A2/fr
Publication of EP0922850A3 publication Critical patent/EP0922850A3/fr
Application granted granted Critical
Publication of EP0922850B1 publication Critical patent/EP0922850B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0029—Pressure regulator in the low pressure fuel system
    • 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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • 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
    • F02M37/46—Filters structurally associated with pressure regulators
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators

Definitions

  • the invention relates to a fuel supply system according to the preamble of claim 1.
  • the object of the invention is a fuel supply system to create, in which the noise and / or pressure pulsations leading interaction between a fuel pressure regulator and a related one Fuel filter is restricted.
  • a fuel supply system by installing at least one throttle device in the flow and / or in the branch to the pressure regulator Feedback effect between that from the fuel filter flowing fuel and a fuel pressure regulator in easily avoided.
  • Throttling devices By arranging throttling devices become noise problems or pressure pulsations reduced or prevented.
  • Throttling devices avoid an increase in hysteresis in the pressure-flow rate characteristic of the fuel pressure regulator.
  • the throttle devices according to the invention advantageously annular gaps and / or separate throttle openings are preferably circular are. For the training of the throttle devices according to the invention are advantageously no additional components necessary.
  • FIG. 1 shows a fuel supply system 1 in which from a fuel tank 2 fuel 3 by a fuel pump 4 in a housing 5 of a fuel filter 6 is pumped.
  • the fuel 3 flows through a filter 7 and passes into a section 8 after passing through the filter 7 a flow line 9, which is still within the housing 5 of the Fuel filter 6 is formed.
  • the flow line 9 opens a branch 10.
  • a throttle device 11 upstream of a fuel pressure regulator 12 trained.
  • the fuel 3 After the fuel 3 passes the throttle device 11 the fuel 3 reaches the fuel pressure regulator 12 and from the fuel pressure regulator 12 via a return line 13 in the fuel tank 2. In addition, in the return line 13 an anti-leakage valve 14 and optionally one Suction jet pump 15 may be provided. In the opposite direction the fuel 3 passes through section 8 of the supply line 9 after the junction 10 over a further section 16 of the flow line 9 to an internal combustion engine 17.
  • FIG 2 shows a construction of the in the Figure 1 schematically illustrated first embodiment one integrated in a housing 5 of the fuel filter 6 Fuel pressure regulator 12.
  • the housing 5 is in the present embodiment formed as a cylinder.
  • the filter 7 in the Interior 18 of the housing 5 is the filter 7 with its Outer wall 19 spaced apart to form a gap 20 an inner wall 21 of the housing 5 is arranged.
  • the fuel 3 flows from the fuel pump 4 via the gap 20 through the filter 7 and enters an interior 18 formed gap 22.
  • the gap 22 is through an inner wall 23 of the filter 7 and through an outer wall 24 as Pipe formed return line 25 is formed.
  • a closure cover 27 is provided with a central through opening 28, which is arranged sealingly on the inner wall 21 of the housing 5.
  • the filtered fuel 3 flows through the passage opening 28 on the one hand via the feed line 9 with a flow rate Q V to the internal combustion engine 17.
  • a part of the filtered flow rate Q G flows as a flow rate Q R to the fuel pressure regulator 12 and from there with an open valve 29 the return line 25 into the fuel tank 2.
  • the branched-off fuel 3 passes a throttle device 11.
  • the throttle device 11 of the embodiment shown in FIG. 2 is an annular gap 30.
  • the gap 30 results from the outer diameter of the upper end of the Return line 25 and a trained opposite Opening 31 in an outer cover 32.
  • the outer cover 32 closes above the cap 27 to form a cavity 18a, the housing 5.
  • the outer cover 32 has an indentation 33 in which a Housing 34 of the fuel pressure regulator 12 is positively attached is. Inside the housing 34 of the fuel pressure regulator 12, a compression spring 35 is provided inside the housing 34 of the fuel pressure regulator 12, a compression spring 35 is provided. A bottom end 36 of the compression spring 35 is supported on a membrane 37 which the housing 34 into an upper and a lower interior 38, 39 divided. Through the membrane 37 is a guide housing 40 guided a displaceable valve member 41.
  • the valve member 41 is the one shown in FIG closed state of the valve 29 on a valve seat 42 on a face 43 of one in the housing 34 of the Fuel pressure regulator 12 arranged tube 44 is formed is. In the open state of the valve 29, the valve member lifts 41 from the valve seat 42, so that there is a valve gap results through which the fuel 3 in the return line 25 can flow.
  • a further spring 45 is used to fix the valve member 41 arranged between the guide housing 40 and the valve member 41.
  • a seal 46 and between the tube 44 and the A seal 47 is provided on the inner wall of the return line 25.
  • FIG Fuel supply system 48 differs from that in FIG Figures 1 and 2 shown first embodiment of a Fuel supply system 1 in that a throttle device 49 in section 8 of the flow line 9 before the Branch 10 to the fuel pressure regulator 12 is arranged.
  • a throttle device 49 in section 8 of the flow line 9 before the Branch 10 to the fuel pressure regulator 12 is arranged.
  • Corresponding components are the same with the same reference numerals Mistake.
  • FIG. 4 shows a design of a throttle device 49 in the housing 5 of the fuel filter 6.
  • the fuel filter 6 has a closure cover 54 which, in contrast to the closure cover 27 of FIG. 2, has a through opening 55 which lies tightly against the outer wall 24 of the return line 25.
  • the throttle device 49 consists of at least one throttle opening 56 which is formed in the cover 54 so that the entire flow rate Q G of the fuel 3 filtered by the filter 7 of the fuel filter 6 must flow through the throttle opening 56.
  • an outer cover 57 of FIG. 4 does not have a narrowed passage opening 28, so that the flow quantity Q R branched off to the fuel pressure regulator 12 can flow unthrottled.
  • the third embodiment of a shown in FIG Fuel supply system 58 differs from that in FIG the fuel supply system 48 shown in FIG. 3, that in addition to a throttle device 49 before Branch 10 to the fuel pressure regulator 12 is another Throttle device 59 after the branch 10 in the flow line 9 is arranged. Same components as in the Embodiments of Figures 1 to 4 are shown, the same reference numerals.
  • a second throttle device 59 By installing a second throttle device 59 a further smoothing takes place in the fuel supply system 58 occurring pressure waves or Pressure pulsations.
  • FIGS. 6 and 7 of a housing 5 of a fuel filter 6 provided with two throttling devices 49 and 59 each differ in the different design of a sealing cap 60 and 61.
  • Both sealing caps 60 and 61 have the same throttle openings 56 for the Throttle device 49, so that the entire, filtered flow rate Q G flows parallel to a symmetry or longitudinal axis 53 from the interior 18 of the filter 7.
  • Both caps 60, 61 are provided with a rotationally symmetrical collar 62, 63.
  • the collar 62 of the closure cover 60 forms, together with a collar 64 on the outer cover 57, the throttling device 59 designed as an annular gap 65.
  • the collar 63 of the closure cover 61 seals against an inner wall 66 of the collar 64 of the outer cover 57.
  • at least one throttle opening 68 is provided in the collar 63, through which the flow quantity Q V flowing into the feed line 9 flows radially outward.
  • a lower closure cover 70 is provided, in which a lower end 71 of the filter 7 is held.
  • the lower sealing cover 70 has a through opening 72 in which the return line 25 is held in a sealed manner.
  • a connection 74 to the return line 13 and a connection 75 for the section 51 of the supply line 9 are provided in one piece on a lower end face 73 of the housing 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

  1. Système d'alimentation en carburant avec un réservoir de carburant à partir duquel une pompe à carburant refoule du carburant dans une conduite d'amenée vers un moteur à combustion interne par l'intermédiaire d'un filtre de combustible, pour lequel à un boítier du filtre de combustible est raccordé un régulateur de pression de carburant à travers lequel du carburant reflue en état ouvert vers le réservoir de carburant au moyen d'une conduite de retour,
    caractérisé en ce qu'
    au moins un dispositif d'étranglement (11, 49, 59) est placé sur un segment (9, 10) entre le filtre de combustible (6) et le moteur à combustion interne (17) et/ou le régulateur de pression de carburant (12).
  2. Système d'alimentation en carburant selon la revendication 1,
    caractérisé en ce qu'
    au moins un dispositif d'étranglement (11) est placé avant le régulateur de pression de carburant (12) dans une dérivation (10) partant de la conduite d'amenée (9).
  3. Système d'alimentation en carburant selon la revendication 1,
    caractérisé en ce qu'
    au moins un dispositif d'étranglement (49) est placé dans la conduite d'amenée (9) en avant de la dérivation (10) vers le régulateur de pression de carburant (12).
  4. Système d'alimentation en carburant selon la revendication 1,
    caractérisé en ce que
    l'on prévoit avant et après la dérivation (10) vers le régulateur de pression de carburant (12) à chaque fois au moins un dispositif d'étranglement (49, 59).
  5. Système d'alimentation en carburant selon l'une des revendications précédentes,
    caractérisé en ce qu'
    un régulateur de pression (12) est intégré dans le boítier (5) du filtre de combustible (6), et au régulateur de pression de carburant (12) est raccordée une conduite de retour (13, 25) qui est placée dans un espace intérieur (18) du boítier (5).
  6. Système d'alimentation en carburant selon l'une des revendications 1, 2 ou 5,
    caractérisé en ce que
    entre la conduite de retour (13, 25) et un composant du boítier (32) du filtre de combustible (6), on prévoit un dispositif d'étranglement (11), formé en tant qu'intervalle (30) annulaire, qui est placé dans la dérivation (10) vers le régulateur de pression de carburant (12).
  7. Système d'alimentation en carburant selon l'une des revendications 1, 3 ou 5,
    caractérisé en ce que
    dans le boítier (5) du filtre de combustible (6), un couvercle de fermeture (54) est placé à l'extrémité supérieure (26) du filtre (7), que dans le couvercle de fermeture (54) est formée au moins une ouverture d'étranglement (56) à travers laquelle s'écoule le carburant (3) filtré, le couvercle de fermeture (54) étant placé avant la dérivation (10) vers le régulateur de pression de carburant (12).
  8. Système d'alimentation en carburant selon l'une des revendications 1, 4 ou 5,
    caractérisé en ce que
    dans le boítier (5) du filtre de combustible (6), le filtre (7) est fermé à son extrémité supérieure (26) avec un couvercle de fermeture (60), le couvercle de fermeture (60) est muni au moins d'une ouverture d'étranglement (56) du dispositif d'étranglement (49), le couvercle de fermeture (60) présente un épaulement (62) annulaire, l'épaulement (62) annulaire forme, avec un épaulement (64) annulaire formé sur une partie du boítier (57) du filtre de combustible (6), un dispositif d'étranglement (59) en forme d'intervalle (65) prévu après la dérivation (10).
  9. Système d'alimentation en carburant selon l'une des revendications 1, 4 ou 5,
    caractérisé en ce que
    dans le boítier (5) du filtre de combustible (6) à l'extrémité supérieure (26) du filtre (7), est placé un couvercle de fermeture (61) qui présente au moins une ouverture d'étranglement (56) du dispositif d'étranglement (49), le couvercle de fermeture (61) est muni d'un épaulement annulaire (63), dans l'épaulement annulaire (63) est formé au moins une ouverture d'étranglement (68) du dispositif d'étranglement (59) après la dérivation (10) vers le régulateur de pression de carburant (12) et l'épaulement annulaire (63) du couvercle de fermeture (61) forme avec l'épaulement annulaire (64) de la partie de boítier (57) un segment de la dérivation (10).
EP98123109A 1997-12-12 1998-12-03 Système d'alimentation en carburant Expired - Lifetime EP0922850B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19755303 1997-12-12
DE19755303A DE19755303A1 (de) 1997-12-12 1997-12-12 Kraftstoffversorgungssystem

Publications (3)

Publication Number Publication Date
EP0922850A2 EP0922850A2 (fr) 1999-06-16
EP0922850A3 EP0922850A3 (fr) 2000-04-26
EP0922850B1 true EP0922850B1 (fr) 2003-04-02

Family

ID=7851716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123109A Expired - Lifetime EP0922850B1 (fr) 1997-12-12 1998-12-03 Système d'alimentation en carburant

Country Status (2)

Country Link
EP (1) EP0922850B1 (fr)
DE (2) DE19755303A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10020870A1 (de) * 2000-04-28 2001-10-31 Bosch Gmbh Robert Common-Rail-Injektor
DE10105031A1 (de) * 2001-02-05 2002-08-14 Bosch Gmbh Robert Vorrichtung zur Dämpfung von Druckpulsationen in Hochdruckeinspritzsystemen
JP2003155963A (ja) * 2001-11-20 2003-05-30 Kyosan Denki Co Ltd フューエルポンプモジュールにおける脈動減衰装置
DE102006051590A1 (de) * 2006-11-02 2008-05-08 Robert Bosch Gmbh Vorrichtung zum Fördern von Kraftstoff
US8833343B2 (en) 2007-10-12 2014-09-16 Ford Global Technologies, Llc Fuel system for improved engine starting
US7448361B1 (en) 2007-10-23 2008-11-11 Ford Global Technologies, Llc Direct injection fuel system utilizing water hammer effect
US7966984B2 (en) 2007-10-26 2011-06-28 Ford Global Technologies, Llc Direct injection fuel system with reservoir
US7753033B2 (en) * 2008-09-05 2010-07-13 Delphi Technologies, Inc. Fuel module with orifice upstream from regulator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19536084A1 (de) * 1995-09-28 1997-04-03 Bosch Gmbh Robert Flüssigkeitsfilter mit eingebautem Druckregler

Also Published As

Publication number Publication date
DE59807728D1 (de) 2003-05-08
EP0922850A2 (fr) 1999-06-16
DE19755303A1 (de) 1999-06-17
EP0922850A3 (fr) 2000-04-26

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