EP0427977A1 - Collecteur de carburant haute pression prévu pour être disposé entre une pompe à carburant et au moins un injecteur de carburant à commande électromagnétique - Google Patents

Collecteur de carburant haute pression prévu pour être disposé entre une pompe à carburant et au moins un injecteur de carburant à commande électromagnétique Download PDF

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Publication number
EP0427977A1
EP0427977A1 EP90120113A EP90120113A EP0427977A1 EP 0427977 A1 EP0427977 A1 EP 0427977A1 EP 90120113 A EP90120113 A EP 90120113A EP 90120113 A EP90120113 A EP 90120113A EP 0427977 A1 EP0427977 A1 EP 0427977A1
Authority
EP
European Patent Office
Prior art keywords
fuel
cavity
fact
manifold
connectors
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Withdrawn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
EP90120113A
Other languages
German (de)
English (en)
Inventor
Francesco Paolo Ausiello
Domenico Maldera
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.)
Weber SRL
Original Assignee
Weber SRL
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 Weber SRL filed Critical Weber SRL
Publication of EP0427977A1 publication Critical patent/EP0427977A1/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Withdrawn legal-status Critical Current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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • 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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/02—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means with fuel-heating means, e.g. for vaporising
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/24—Fuel-injection apparatus with sensors

Definitions

  • the present invention relates to a high pressure fuel manifold which is adapted to be fitted between a fuel pump and at least one electromagnetically actuated fuel injection valve.
  • Known manifolds of this type have a substantially tubular form and are delimited by a cylindrical side wall and by a pair of end walls. They further include a plurality of connectors fixed to the said side wall and communicating with the internal cavity thereof; at least one of these connectors is put into communication, via a suitable duct, with the fuel supply pump, whilst each of the others is in communication, via a corresponding duct, with an electromagnetically actuated fuel injection valve. On one of the said end walls there is then fitted a sensor for detecting the pressure and/or the temperature within the said first-defined cavity.
  • a manifold of this type does not lend itself to being utilised on different fuel supply circuits, that is to say those intended for engines of different power having, for example, a different number of cylinders.
  • the axial length of the manifold must be chosen in dependence on the number of connectors to be fixed to its side wall, and therefore this length depends on the overall number of cylinders to be supplied from the manifold.
  • manifolds of the known type described above are not normally provided with fuel heating means, and therefore to increase the fuel temperature separate heater means must be fitted in the supply circuit.
  • the present invention seeks to provide a high pressure fuel manifold of the type which has been briefly described, which will be free from the disadvantages which have been discussed; it is therefore a first object of the invention to provide a manifold which has a rigorous symmetry in the flow paths for fuel supplied to the injection valves; another object is that of obtaining a high degree of modularity to adapt the manifold to use on engines of different type, in particular those having a different number of cylinders; a further object of the invention is that of providing the manifold with means adapted to exert a certain fuel filtering action and also with fuel heater means.
  • a high pressure fuel manifold adapted to be fitted between a fuel supply pump and at least one electromagnetically actuated fuel injection valve, characterised by the fact that it includes a body provided with an internal cavity delimited substantially by a pair of end walls and a pair of side walls, on a first of the said end walls there being fixed connectors communicating with the said cavity, at least one of which connectors is adapted to be connected to a duct communicating with the said fuel supply pump, each of the others being adapted to be connected to a corresponding fuel injection valve, and the second of the said end walls being provided with at least one hole adapted to be connected to a pressure and/or temperature sensor.
  • the fuel manifold of the invention is adapted to be fitted between a fuel supply pump (not shown) and at least one electromagnetically actuated fuel injection valve (not shown); it is particularly adapted to be used in a circuit adapted to supply diesel oil to the electronically controlled injection valves of a diesel engine; as is known, the diesel oil must be supplied to such valves at a very high pressure, of the order of 1500 bar.
  • the manifold substantially comprises a body 1 having an internal cavity 2 delimited substantially by a pair of end walls 3 and 4 and by a side wall 5.
  • On the wall 3 there are fixed connectors 6, 7 and 8 communicating with the cavity 2 and of which at least one, that indicated with the reference numeral 6 in the drawing, is connected to a duct 9 communicating with the fuel supply pump; each of the others 7 and 8 is adapted to be connected, via a duct 10 and 11, to a corresponding injection valve; the other end wall 4 is provided with at least one hole 12 which can be connected to a pressure and/or temperature sensor 13.
  • the hole 12 is formed in an insert 14 which is fixed to the body 1 in any suitable manner, for example by welding; as is clearly seen from the figure, the said insert substantially defines the lower end wall 4 of the body 1.
  • the senor 13 is provided with a threaded stem which is screwed into a corresponding threaded section of the hole 12.
  • a small magnet 15 of substantially tubular form which is housed within the said stem and is adapted to be traversed by the fuel to retain metal particles contained in the fuel supplied into the cavity 2.
  • duct section 12a which is in communication with a chamber (not shown) of the sensor 13 to act in a known way on a membrane which forms part of the sensor itself.
  • the cavity 2 has a substantially elongate form and the connector 6 is disposed in a such a way as to open substantially into the centre of the cavity, whilst the other connectors 7 and 8 are disposed peripherally around the first; therefore the connector 6 communicates with the cavity 2 through a substantially axial hole 16 whilst the others open into the cavity through holes 17 and 18 the axes of which form a predetermined angle with that of the hole 16 as is clearly seen from the drawing. Even though in the section shown in the drawing only two connectors 7 and 8 disposed about the connector 6 are visible, it is evident that the number of connectors which are disposed around the central connector 6 can be any number desired depending on the number of injection valves to be supplied by the manifold.
  • an electrical resistance 19 of annular form can be provided adapted to heat the fuel contained within the cavity 2, or alternatively there may be provided a sleeve 26 with cavities 27 traversed by a liquid to maintain the temperature of the fuel.
  • annular seat 20 On this outer surface there is formed an annular seat 20 arranged to house the edge of a sheath 21 of cup-shape form adapted to protect the sensor 13. This latter is conveniently provided with a connector 22 intended to be connected to a suitable electrical connection element.
  • the manifold described operates in the following manner.
  • Fuel is supplied from the injection pump to the connector 6 through the duct 9 and from this flows to the interior of the cavity 2 through the hole 16.
  • the central stream 23 which is thus set up within the interior of the cavity 2 gives rise to a plurality of streams 24 each of which has a substantially parabolic shape as is clearly seen from the drawings; in this way there are formed stream lines 25 with a lower velocity, in correspondence with which the metal particles possibly contained in the fuel are exposed to the attraction exerted by the magnet 15. In this way such particles can be captured by this magnet and deposited on the outer surface thereof; subsequently the streams 24 traverse the holes 17 and 18 directed towards the exit connectors 7 and 8 and therefore towards the injection valves.
  • the length of the fuel flow paths between the supply connector 6 and each of the outlet connectors 7 and 8 is substantially the same. In this way a perfect symmetry of these flow paths is achieved, which obviously makes it possible to have the same resistance to the passage of fluid through the injection valves and to achieve, overall, a very low resistance to flow.
  • the manifold has a high degree of modularity: in fact on the wall 3 there can be disposed, as well as the inlet connector 6, also a large number of outlet connectors in such a way as to make the manifold suitable to be used on engines of different type; whenever a manifold must be formed with a cavity 2 having greater dimensions it is sufficient to utilise for this purpose a body 1 of greater axial length.
  • fuel contained within the cavity 2 can be maintained at a constant temperature with ease and in a continuous manner by the electrical resistance 19 or the heater sleeve 26.
  • the manifold is constructionally very simple and compact and therefore gives rise to a low bulk; it involves few parts which can be easily made and connected together by very simple operations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP90120113A 1989-11-07 1990-10-19 Collecteur de carburant haute pression prévu pour être disposé entre une pompe à carburant et au moins un injecteur de carburant à commande électromagnétique Withdrawn EP0427977A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6796089 1989-11-07
IT67960A IT1238509B (it) 1989-11-07 1989-11-07 Collettore di carburante ad elevata pressione atto ad essere inserito tra una pompa di alimentazione del carburante ed almeno una valvola di iniezione del carburante azionata elettromagneticamente

Publications (1)

Publication Number Publication Date
EP0427977A1 true EP0427977A1 (fr) 1991-05-22

Family

ID=11306737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120113A Withdrawn EP0427977A1 (fr) 1989-11-07 1990-10-19 Collecteur de carburant haute pression prévu pour être disposé entre une pompe à carburant et au moins un injecteur de carburant à commande électromagnétique

Country Status (3)

Country Link
EP (1) EP0427977A1 (fr)
BR (1) BR9005709A (fr)
IT (1) IT1238509B (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014700A1 (fr) * 1996-09-30 1998-04-09 Robert Bosch Gmbh Accumulateur de carburant haute pression
WO1998021469A1 (fr) * 1996-11-14 1998-05-22 Robert Bosch Gmbh Systeme d'injection de carburant
FR2765919A1 (fr) * 1997-07-09 1999-01-15 Cideb Dispositif de distribution de carburant pour l'alimentation des cylindres d'un moteur a combustion interne
FR2770260A1 (fr) * 1997-10-29 1999-04-30 Siemens Ag Accumulateur de pression pour un systeme d'alimentation en carburant
WO1999022135A1 (fr) * 1997-10-29 1999-05-06 General Motors Corporation Systeme d'injection de carburant
WO1999060263A1 (fr) * 1998-05-19 1999-11-25 Cideb Dispositif de distribution de carburant pour moteur a combustion interne
WO2000011344A1 (fr) * 1998-08-18 2000-03-02 Delphi Technologies, Inc. Systeme d'injection de carburant
EP0999362A2 (fr) * 1998-11-07 2000-05-10 Lucas Industries Limited Système de carburant
WO2002014680A1 (fr) * 2000-08-11 2002-02-21 Siemens Aktiengesellschaft Dispositif filtrant destine a une zone haute pression du systeme d'injection d'un reservoir de stockage destine a un moteur a combustion interne
DE102008039924A1 (de) * 2008-08-27 2010-03-04 Continental Automotive Gmbh Kraftstoffhochdruckspeicher

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957682A (en) * 1957-05-13 1960-10-25 Holley Carburetor Co Fuel system
EP0043283A2 (fr) * 1980-07-01 1982-01-06 Cashmore, Peter Roseby Indicateur de consommation de combustible d'un moteur à combustion interne
FR2609503A1 (fr) * 1987-01-12 1988-07-15 Iveco Fiat Installation d'injection du carburant a accumulation de pression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957682A (en) * 1957-05-13 1960-10-25 Holley Carburetor Co Fuel system
EP0043283A2 (fr) * 1980-07-01 1982-01-06 Cashmore, Peter Roseby Indicateur de consommation de combustible d'un moteur à combustion interne
FR2609503A1 (fr) * 1987-01-12 1988-07-15 Iveco Fiat Installation d'injection du carburant a accumulation de pression

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014700A1 (fr) * 1996-09-30 1998-04-09 Robert Bosch Gmbh Accumulateur de carburant haute pression
WO1998021469A1 (fr) * 1996-11-14 1998-05-22 Robert Bosch Gmbh Systeme d'injection de carburant
CN1075164C (zh) * 1996-11-14 2001-11-21 罗伯特·博施有限公司 燃料喷射系统
FR2765919A1 (fr) * 1997-07-09 1999-01-15 Cideb Dispositif de distribution de carburant pour l'alimentation des cylindres d'un moteur a combustion interne
WO1999002850A1 (fr) * 1997-07-09 1999-01-21 Cideb Dispositif de distribution de carburant pour l'alimentation des cylindres d'un moteur a combustion interne
US6186119B1 (en) 1997-07-09 2001-02-13 Cideb Device dispensing fuel for supplying an internal combustion engine cylinder
US6135092A (en) * 1997-10-29 2000-10-24 General Motors Corporation Fuel injection system
FR2770260A1 (fr) * 1997-10-29 1999-04-30 Siemens Ag Accumulateur de pression pour un systeme d'alimentation en carburant
WO1999022135A1 (fr) * 1997-10-29 1999-05-06 General Motors Corporation Systeme d'injection de carburant
US6196192B1 (en) 1998-05-19 2001-03-06 C I D E B Fuel dispensing device for an internal combustion engine
FR2778950A1 (fr) 1998-05-19 1999-11-26 Cideb Dispositif de distribution de carburant pour moteur a combustion interne
WO1999060263A1 (fr) * 1998-05-19 1999-11-25 Cideb Dispositif de distribution de carburant pour moteur a combustion interne
WO2000011344A1 (fr) * 1998-08-18 2000-03-02 Delphi Technologies, Inc. Systeme d'injection de carburant
EP0999362A2 (fr) * 1998-11-07 2000-05-10 Lucas Industries Limited Système de carburant
EP0999362A3 (fr) * 1998-11-07 2002-07-24 Delphi Technologies, Inc. Système de carburant
WO2002014680A1 (fr) * 2000-08-11 2002-02-21 Siemens Aktiengesellschaft Dispositif filtrant destine a une zone haute pression du systeme d'injection d'un reservoir de stockage destine a un moteur a combustion interne
DE102008039924A1 (de) * 2008-08-27 2010-03-04 Continental Automotive Gmbh Kraftstoffhochdruckspeicher

Also Published As

Publication number Publication date
IT1238509B (it) 1993-08-18
IT8967960A1 (it) 1991-05-07
IT8967960A0 (it) 1989-11-07
BR9005709A (pt) 1991-09-17

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