EP0091506A1 - Dispositif d'alimentation de carburant - Google Patents

Dispositif d'alimentation de carburant Download PDF

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Publication number
EP0091506A1
EP0091506A1 EP82108432A EP82108432A EP0091506A1 EP 0091506 A1 EP0091506 A1 EP 0091506A1 EP 82108432 A EP82108432 A EP 82108432A EP 82108432 A EP82108432 A EP 82108432A EP 0091506 A1 EP0091506 A1 EP 0091506A1
Authority
EP
European Patent Office
Prior art keywords
supply device
fuel supply
fuel
degassing
degassing container
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Withdrawn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
EP82108432A
Other languages
German (de)
English (en)
Inventor
Dieter Heil
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO 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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0091506A1 publication Critical patent/EP0091506A1/fr
Withdrawn legal-status Critical Current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
    • F02M37/0047—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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • 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
    • F02M37/20—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 characterised by means for preventing vapour lock

Definitions

  • the invention relates to a fuel supply device of an internal combustion engine with a fuel injection system, in particular a diesel engine, with a feed line that leads from a fuel tank, optionally via a flow meter and then a pump to the fuel injection system, and with a return line starting from the fuel injection system, which has a return valve opens into the feed line in the direction of flow in front of the pump, the return valve being openable in the presence of a certain amount of fuel in the return line.
  • a fuel supply device of an internal combustion engine with a fuel injection system, in particular a diesel engine, with a feed line that leads from a fuel tank, optionally via a flow meter and then a pump to the fuel injection system, and with a return line starting from the fuel injection system, which has a return valve opens into the feed line in the direction of flow in front of the pump, the return valve being openable in the presence of a certain amount of fuel in the return line.
  • the closing element of the return valve is acted against by a spring force by the weight of the fuel standing in the return line in the opening direction. Furthermore, the closing member is acted upon in the opening direction both by the delivery pressure in the return line and by gases contained in the fuel and by foam formation in the return line.
  • the return valve Since the return valve always opens when a certain pressure is present in the return line, regardless of what creates the pressure, and since the pressure is generated by the delivery pressure, the gases and the foam formation completely uncontrollably, the return valve can open, although there is not enough fuel in the return line. As a result, gas and foam are introduced into the supply line in addition to the fuel. However, this leads to malfunctions in the operation of the internal combustion engine.
  • the return line opens into a degassing container, the outlet of which is connected via the return valve to the supply line, with a level transmitter arranged in the degassing container, by means of which the return valve, which is closed in the normal position, can be controlled in the opening direction above a certain fill level in the degassing container .
  • This configuration ensures that fuel is only fed into the feed line from the return line when there is actually such a large amount of fuel that no air or gases can get into the feed line. Gases in the fuel are separated from the fuel.
  • the level sensor can be a float-controlled sensor, which can be a switch. Such a float works completely independently of the pressure conditions in the degassing tank.
  • the switch can be a non-contact switch, e.g. be a reed contact which interacts with a magnet arranged on the float.
  • the float can be designed in a ring shape and enclose a guide rod E arranged vertically in the degassing container with movement play.
  • the return valve is a normally closed solenoid valve, the return valve is closed if the level sensing fails.
  • a fuel is drawn in only from the fuel tank, so that a possible introduction of gas and air from the degassing chamber container in the feed line is excluded.
  • a degassing connection opens into the upper area of the degassing container and the degassing connection is connected to the fuel tank, the amount of fuel delivered via the return line to the degassing container can be discharged into the fuel tank if the level sensor fails and the return valve is closed. Likewise, the gases separated from the fuel tank are discharged via the degassing connection.
  • the return line preferably opens into the degassing container via a distributor, which ensures that the fuel entering the degassing container via the return line enters the degassing container over a large area, so that the gases contained in the fuel are separated.
  • the distributor piece can be a pipe socket protruding into the degassing container with a plurality of radially continuous outlet bores. the pipe socket preferably projects vertically into the degassing container and is closed at its end opposite the return line. The fuel runs along the outer pipe wall into the degassing tank.
  • the distributor piece is an at least partially radially circumferential distributor channel arranged on the inner wall of the degassing container in the upper region thereof, which is designed with a plurality of outlet openings directed towards the inner wall.
  • the distribution channel can be an annular or partially annular tube with closed ends.
  • a further degassing of the fuel can take place in that the fuel tank above the determined th level is divided by a degassing sieve into an inlet space and a liquid space, the degassing sieve being attached in a simple manner to the end of the pipe socket protruding into the degassing container.
  • a fuel temperature control device can be arranged in the degassing container.
  • the fuel temperature control device can have a tube coil through which a temperature control medium can flow, which can be flowed through by fuel drawn in from the fuel tank in order to cool the fuel.
  • the fuel in the degassing tank can be heated by the fuel temperature control device to a constant temperature which can be between 26 ° C. and 30 ° C., preferably 28 ° C., by heating or cooling.
  • the fuel supply device shown consists of an injection system 1 with injection pump 2 and injection nozzle 3 and an overflow valve 4. Furthermore, the device has a supply line 5, which from a fuel tank 6 via a flow meter 7, an outlet 8 opening into a supply line 5 of a degassing container 9, one Pump 10 and a fuel filter 11 leads to the injection system 1.
  • the leak oil line 12, which starts from the injection nozzle 3 and an overflow line 13, which starts from the overflow valve 4, are combined as a return line 14 from above to the degassing tank 9.
  • a bypass 15 bypassing the flow meter 7 with a shut-off valve 16 can be opened if there are problems with the fuel supply by the flow meter 7.
  • the degassing container 9 shown in FIG. 2 has a pipe socket 18 which opens at its cover part 17.
  • the return line 14 can be connected to this pipe socket 18.
  • the end of the pipe socket 18 projecting into the degassing container 9 is closed and carries a degassing sieve 19 which divides the degassing container 9 into an inlet space 20 and a liquid space 21.
  • the pipe socket 18 On its cylindrical outer surface, the pipe socket 18 is provided with a plurality of radially continuous outlet openings 22 through which the return line passes 14 incoming fuel can enter the inlet space 20.
  • a degassing connection 23 which also opens into the degassing container 9 on the cover part 17, can be connected to the fuel tank 6.
  • an annular float 27 On its guide rod 24 projecting vertically into the degassing container 9, an annular float 27 is guided between two stops 25 and 26 so that it can move vertically.
  • a permanent magnet (not shown) attached to the float 27 overlaps a reed contact (also not shown) arranged on the guide rod 24 so that a relay 29 is switched from the reed contact via a line 2B Relay 29 from the reed contact a signal; it closes a circuit 31 leading to a solenoid valve 30.
  • a pipe coil 32 of a fuel temperature control device is arranged in the liquid space 21 of the degassing container 9. Fuel from the fuel tank 6 can be passed through the pipe coil 32 via the connections 33 of the pipe coil 32 to cool the fuel in the degassing container 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Fuel-Injection Apparatus (AREA)
EP82108432A 1982-04-08 1982-09-13 Dispositif d'alimentation de carburant Withdrawn EP0091506A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3213210 1982-04-08
DE19823213210 DE3213210A1 (de) 1982-04-08 1982-04-08 Kraftstoffversorgungseinrichtung

Publications (1)

Publication Number Publication Date
EP0091506A1 true EP0091506A1 (fr) 1983-10-19

Family

ID=6160598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82108432A Withdrawn EP0091506A1 (fr) 1982-04-08 1982-09-13 Dispositif d'alimentation de carburant

Country Status (2)

Country Link
EP (1) EP0091506A1 (fr)
DE (1) DE3213210A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564147A1 (fr) * 1984-05-09 1985-11-15 Mielle Jean Pierre Dispositif de defigeage, fluidification et epuration du gazole dans les moteurs diesel
WO1991014091A1 (fr) * 1990-03-06 1991-09-19 Peter Frick Dispositif permettant de determiner le debit de carburant dans un moteur a combustion interne
US20190106312A1 (en) * 2017-10-06 2019-04-11 Groninger & Co. Gmbh Fluid supply assembly for removing gas bubbles from a fluid path

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358424A (en) * 1965-07-23 1967-12-19 Seaton Wilson Mfg Co Gas-oil separator
DE2427200A1 (de) * 1974-02-05 1975-08-07 Doornes Bedrijfswagen Fab Vorrichtung fuer die kraftstoffzufuhr eines dieselmotors
GB1433875A (en) * 1972-08-18 1976-04-28 Bishop B L H Liquid supply and measuring systems
GB1573703A (en) * 1977-03-10 1980-08-28 Plumbly S J Fuel system
GB2044399A (en) * 1979-03-19 1980-10-15 Haldex Ab Overflow return tank
EP0043283A2 (fr) * 1980-07-01 1982-01-06 Cashmore, Peter Roseby Indicateur de consommation de combustible d'un moteur à combustion interne

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358424A (en) * 1965-07-23 1967-12-19 Seaton Wilson Mfg Co Gas-oil separator
GB1433875A (en) * 1972-08-18 1976-04-28 Bishop B L H Liquid supply and measuring systems
DE2427200A1 (de) * 1974-02-05 1975-08-07 Doornes Bedrijfswagen Fab Vorrichtung fuer die kraftstoffzufuhr eines dieselmotors
GB1573703A (en) * 1977-03-10 1980-08-28 Plumbly S J Fuel system
GB2044399A (en) * 1979-03-19 1980-10-15 Haldex Ab Overflow return tank
EP0043283A2 (fr) * 1980-07-01 1982-01-06 Cashmore, Peter Roseby Indicateur de consommation de combustible d'un moteur à combustion interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GAS AND OIL POWER, Band 70, Nr. 780, Fr}hling 1974, Seite 47, Whitehall Press Ltd., Maidstone, G.B. *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564147A1 (fr) * 1984-05-09 1985-11-15 Mielle Jean Pierre Dispositif de defigeage, fluidification et epuration du gazole dans les moteurs diesel
WO1991014091A1 (fr) * 1990-03-06 1991-09-19 Peter Frick Dispositif permettant de determiner le debit de carburant dans un moteur a combustion interne
US20190106312A1 (en) * 2017-10-06 2019-04-11 Groninger & Co. Gmbh Fluid supply assembly for removing gas bubbles from a fluid path

Also Published As

Publication number Publication date
DE3213210A1 (de) 1983-10-13

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT DE FR GB IT SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19841001

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HEIL, DIETER