EP1310672A2 - Pompe à carburant pour un système d'alimentation de moteur à combustion interne et système d'alimentation - Google Patents

Pompe à carburant pour un système d'alimentation de moteur à combustion interne et système d'alimentation Download PDF

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Publication number
EP1310672A2
EP1310672A2 EP02017337A EP02017337A EP1310672A2 EP 1310672 A2 EP1310672 A2 EP 1310672A2 EP 02017337 A EP02017337 A EP 02017337A EP 02017337 A EP02017337 A EP 02017337A EP 1310672 A2 EP1310672 A2 EP 1310672A2
Authority
EP
European Patent Office
Prior art keywords
fuel pump
drive motor
fuel
housing
pump 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.)
Granted
Application number
EP02017337A
Other languages
German (de)
English (en)
Other versions
EP1310672B1 (fr
EP1310672A3 (fr
Inventor
Gottlob Haag
Martin Kessler
Michael Huebel
Bernd Schroeder
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1310672A2 publication Critical patent/EP1310672A2/fr
Publication of EP1310672A3 publication Critical patent/EP1310672A3/fr
Application granted granted Critical
Publication of EP1310672B1 publication Critical patent/EP1310672B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors

Definitions

  • the invention initially relates to a fuel pump device for a fuel system one Internal combustion engine, especially with direct injection, with a fuel pump and one connected to it Drive motor.
  • Such a fuel pump device from EP 0 725 212 A2 known.
  • a fuel system is described in which a first fuel pump device fuel from a fuel tank to a second fuel pumping device and from there on over one High pressure area promotes to injectors.
  • Both Fuel pump devices each include one Fuel pump and one with the fuel pump connected electric drive motor. The capacity Both fuel pumping devices can use the speed of the electric drive motor changed and adjusted become.
  • the disadvantage of the known fuel pump device is of that their handling and integration into that Fuel system is difficult and therefore building the Makes the fuel system expensive. Also corresponds to the Pump performance not in all operating points of the Internal combustion engine the requirements.
  • This task is carried out in a fuel pump device at the outset that the Fuel pump is a radial piston pump and the Drive motor and the fuel pump with one unit form a common fluid-tight housing.
  • the design of the fuel pump as a radial piston pump enables the generation of high pressures, as in modern Fuel systems for internal combustion engines with gasoline direct injection required are.
  • the fact that the Drive motor and fuel pump form one unit becomes the handling when building the fuel system considerably relieved. So the drive motor and Fuel pump existing unit are preassembled, so that when building the fuel system, for example in a motor vehicle only one common and not two separate parts must be handled.
  • the housing of the drive motor and the Fuel pump in a common fluid-tight housing again improves the manageability of such designed fuel pumping device.
  • There is one such a fluid-tight housing for the Fuel pump required so this is not or hardly leads to additional costs.
  • the drive motor in the fluid-tight housing is housed ensures that the drive motor from contamination is protected from the outside. So less can pollution-tolerant but powerful Electric motors are used, which is again the Performance of the fuel pumping device benefits comes. Also the lifespan of the fuel pump device is improved by this measure.
  • the efficiency of the fuel pump device according to the invention is also improved by the fact that otherwise required shaft seal from the Fuel pump to the drive motor can be omitted.
  • a such shaft sealing is always with a certain Friction and some leakage, both of which reduces the efficiency of the fuel pump.
  • the Eliminating the shaft seal also reduces costs.
  • Fuel pumping device are in subclaims specified.
  • the Fuel pump a drive shaft with at least one Bearing includes which is a rotor shaft of the Drive motor is.
  • the drive motor is dispensed with.
  • Fuel pump device is the Interior of the housing of the fuel pump and the Drive motor unit formed by fuel at least flows in the area of the drive motor. This has the Advantage that the drive motor by the fuel is cooled, which improves its efficiency.
  • the flow guidance in the interior of the housing from the fuel pump and the drive motor unit is designed so that the fuel will at least drive the engine flowed through in areas and then to the fuel pump arrives, and that in the flow path between the drive motor and fuel pump a filter device, in particular a sieve, is present.
  • Fuel pumping device is the high efficiency available throughout the life of the facility.
  • the advanced training in which is also particularly compact the fuel pump drive shaft Has eccentric section and one around the eccentric section arranged around the ring and for each piston one with the Piston-connected slide shoe that bears against the cam ring are present, being in the radially outer peripheral surface of the cam ring a circumferential groove and in the shoe and in Pistons a radially extending channel are present.
  • the Groove and the channels can be simple and inexpensive Way. Through the groove and the Channels can use less fuel Flow resistance can be performed. The bringing in complex bores, for example in a cylinder head the radial piston pump is therefore not required. This will additionally the costs are kept low.
  • the fuel pumping device is aimed in the same direction, where the fuel pump is on Piston arranged suction valve comprises. This measure too reduces the dimensions of the fuel pumping device and the cost of making them.
  • Valve element of the suction valve made of a ceramic Material is made.
  • Such a ceramic Valve element builds relatively light, which advantages in terms on the valve dynamics.
  • one is Valve element insensitive to wear, so that the service life of the fuel pump device designed in this way is high.
  • Fuel pump device comprises this an electronic control unit, which drives the engine controls, with a control unit housing, which on the Housing of the fuel pump and the drive motor formed unit with at least one fastener is attached.
  • An electronic control is for the most types of drive motors are required anyway the signals required for the drive in the to provide the desired way.
  • the electronics are housed in a separate control section it can be optimally pre-assembled. In particular such pre-assembly conditions are adhered to, which for the error-free Operation of the control electronics are required.
  • the control unit housing of the control unit on Housing of the fuel pump and the drive motor formed unit are attached. This still happens before they are installed on the internal combustion engine, the Assembly work on the internal combustion engine simplified.
  • the fastener the wall of the housing of the fuel pump and the Drive motor formed unit penetrates, and that that Fasteners to the housing from the Fuel pump and the drive motor unit formed is sealed by a sealant.
  • a sealant By that Fasteners the wall of the housing from the Fuel pump and the drive motor unit formed penetrates, becomes a particularly safe and stable Attachment of the control unit housing allows.
  • the Sealant provided according to the invention is simultaneously ensures that fuel is in the housing is present, from this not to the control section can leak.
  • a degassing duct leads to the outside. This ensures that if Fuel gases that pass or through the sealant this through from the interior of the housing of the Drive motor and the fuel pump to the outside, kept away from the sensitive control electronics and instead be derived into the environment.
  • the assembly of the fuel pumping device is repeated simplified by the fact that the housing from the Fuel pump and the drive motor unit formed comprises at least two parts which are fluid-tight are connected to one another, the part of which Fuel pump and one connected to the drive shaft Rotor and part of the stator. Both parts can therefore independently of one another in different production sites can be pre-assembled. The Final assembly is still very easy.
  • the invention also relates to a fuel system for a Internal combustion engine with direct injection, with a first Fuel pump, which fuel to a fuel pumping device that promotes a second fuel pump and an electric drive motor connected to it includes, and with a high pressure area in which the second Fuel pump promotes and at least one Fuel injector is connected.
  • second fuel pump is a radial piston pump and the Drive motor and the second fuel pump one unit form with a common fluid-tight housing.
  • FIG. 1 a fuel system for a Internal combustion engine overall reference number 10. Die The internal combustion engine is only partially shown in FIG. 1 and bears the reference number 12.
  • the fuel system 10 includes a fuel tank 14, from which a fuel pump 16 delivers the fuel. This is driven by an electric drive motor 18 driven.
  • the fuel pump 16 delivers the fuel via a filter 19 to a fuel pumping device 20.
  • This comprises a housing 22 in which an electrical Drive motor 24 and a radial piston pump 26 are accommodated.
  • On the exact structure of the Fuel pump device 20 will be discussed in more detail below received.
  • the fuel pump device 20 delivers the fuel under very high pressure into a high pressure area belonging fuel rail 30 ("rail"), in which the Fuel is stored under very high pressure.
  • a high pressure area belonging fuel rail 30 (“rail"), in which the Fuel is stored under very high pressure.
  • multiple fuel injectors 32 connected to this are multiple fuel injectors 32 connected. These inject the fuel directly into corresponding combustion chambers 34 of the internal combustion engine 12.
  • the pressure in the fuel rail 30 is one Pressure sensor 36 detected. It delivers appropriate signals a control and regulating device 38. In turn lead from this Control lines to the electronic control part 28 of the Fuel pump device 20 and for electrical Drive motor 18, which drives the fuel pump 16.
  • the fuel pump device 20 is constructed as follows (Figure 2): The housing 22 is in two parts with one in Figure 2 left part 40 and a right part in Figure 2 42. Das left housing part 40 is block-shaped and has in Essentially circular cylindrical, disc-like shape. Coaxial to its longitudinal axis 44 is from the right in FIG a blind hole 45 is made in the left housing part 40. In this leads to several, distributed over the circumference arranged, radial and open to the outside Blind holes 46. In these are the cylinders of the Radial piston pump 26. In the sectional plane of Figure 2 is only one such cylinder visible. The radial direction blind holes 46 are each through an opening 47 fluidically with the electric drive motor 24 connected. A sieve insert is in each case in the openings 47 49 available.
  • roller bearings 48 and 50 used, through which a drive shaft 52 opposite the left housing part 40 is mounted with low friction.
  • To the stationary part of the right rolling bearing 50 is for electric drive motor 24 out a cover ring 53rd attached. Through this, the roller bearing 50 is in front of particles protected by the operation of the electric drive motor 24 can originate.
  • the drive shaft 52 has an in Installation position at the level of the blind hole 46 Eccentric section 54. This is a turn Hubring 56 placed. In the area of a cylinder outer circumferential surface of the cam ring 56 each flattened.
  • a sleeve 58 is used in the radial blind hole 46 of a cylinder.
  • a Piston 60 slidably received in the radial direction.
  • a slide shoe 62 attached at the radially inner end of the piston 60.
  • the bushing 58 supports against the cam ring 56th applied.
  • Flattened in the outer area The lateral surface of the cam ring 56 is a continuous groove 66 available. With this is a bore 68 in the shoe 62 and a bore 70 in which extends coaxially in the piston 60 Connection.
  • the bore 70 in the piston 60 has in its radially outer Area a larger diameter than in the radially inner Area. It is in the transition between these two areas an inclined transition surface (without reference number) present, which has a valve seat for a valve ball 72 a suction valve 74 forms.
  • the valve ball 72 is off a ceramic material and is made by one Compression spring (without reference number) against the valve seat applied.
  • a work space 78 is available between the piston 60 and the blind hole 46 to the radially outwardly closing cylinder head 76 .
  • a work space 78 is available between the piston 60 and the blind hole 46 to the radially outwardly closing cylinder head 76 .
  • a work space 78 is available between the piston 60 and the blind hole 46 to the radially outwardly closing cylinder head 76 .
  • the working space 78 can an outlet duct 82 present in the left housing part 40 get connected. This continues to the fuel manifold 30th
  • the drive shaft 52 of the radial piston pump 26 is in Figure 2 to the right slightly over the interface of the left Housing part 40 and forms a rotor shaft 84 here a rotor 86 of the electric drive motor 24.
  • Der Rotor 86 is on rotor shaft 84 by screw 88 attached and opposite to this by a locking disk 90th secured against rotation.
  • the rotor 86 has a cup shape. On his magnets 92 are applied to the radially outer lateral surface.
  • the right housing part 42 is also cup-shaped. It is opposite the left housing part 40 via an O-ring 93 sealed. Are on its radially inner lateral surface Windings 94 of the drive motor 24 attached.
  • the Interior of the right housing part 42 is not one illustrated inlet with the first fuel pump 16 connected.
  • FIG 2 is to the right of the right housing part 42 the electrical control part 28.
  • This comprises a housing 96, in which electronic components 98 are accommodated, which for the control of the windings 94 of the electric drive motor 24 of the radial piston pump 26 required are.
  • the electronic components 98 are in turn controlled by the control and regulating device 38.
  • the Control unit housing 96 is through on the right housing part 42 a bolt 100 attached.
  • This is in two Sleeves 102 and 104 guided, between which an O-ring 106th is pressed in the installed position.
  • the length of the sleeves 102 and 104 is chosen so that the O-ring 106 is still in the Area of the right housing part 42 is.
  • the interior the right housing part 42 is thus fluid-tight completed.
  • the power lines 108 may be on the bolt 100 welded or soldered.
  • the fuel runs from the first Fuel pump 16 compressed to approximately 4 to 6 bar. He reaches the interior of the right one with this pressure Housing part 42. About the electronic components the electric drive motor 18 from the control device 38 rotated, whereby the drive shaft 52 in a rotational movement, the cam ring 56 in a rotating Stroke movement and the piston 60 in a reciprocating motion be transferred.
  • the fuel flows through the interior of the right housing part 42 cools the components of the drive motor 24 and also that of the power electronics 98, and then passes through the openings 47, the groove 66 in Hubring 56, and the bores 68 and 70 in the slide shoe 62nd and in the piston 60 into the working space 78. Through the sieves 49 In the openings 47 there is contamination from the work area 78 kept away.
  • the fuel passes from the working space 78 further via the outlet duct 82 to the fuel manifold 30th
  • the fuel pump device 20 becomes as follows assembled: First, the left housing part 40 with the Components of the radial piston pump 26 pre-assembled. The rotor 86 of the electric drive motor 24 is already attached to the rotor shaft 84. At the same time, possibly in another assembly plant, the right housing part 42 with the windings 94 are preassembled. Even the assembly of the Control part housing 96 and the connection of the windings 94 with the electronic components 98 in the control unit housing 96 is possible here.
  • the final assembly takes place, in which the right housing part 42 with the windings 94 pushed over the rotor 86 and on left housing part 40 is attached.
  • the Radial piston pump 26 for generating very high delivery pressures, the associated electric drive motor 24 for Generation of high speeds, and the electrical control part 28 for controlling the electric drive motor 24 includes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP20020017337 2001-11-07 2002-08-02 Pompe à carburant pour un système d'alimentation de moteur à combustion interne et système d'alimentation Expired - Lifetime EP1310672B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001154552 DE10154552A1 (de) 2001-11-07 2001-11-07 Kraftstoff-Pumpeinrichtung für ein Kraftstoffsystem einer Brennkraftmaschine sowie Kraftstoffsystem
DE10154552 2001-11-07

Publications (3)

Publication Number Publication Date
EP1310672A2 true EP1310672A2 (fr) 2003-05-14
EP1310672A3 EP1310672A3 (fr) 2005-06-08
EP1310672B1 EP1310672B1 (fr) 2006-10-18

Family

ID=7704838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020017337 Expired - Lifetime EP1310672B1 (fr) 2001-11-07 2002-08-02 Pompe à carburant pour un système d'alimentation de moteur à combustion interne et système d'alimentation

Country Status (3)

Country Link
EP (1) EP1310672B1 (fr)
JP (1) JP2003184683A (fr)
DE (2) DE10154552A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503697B1 (de) * 2006-06-02 2008-06-15 Bosch Gmbh Robert Pumpenelement für eine hochdruckpumpe
WO2009043798A1 (fr) * 2007-09-28 2009-04-09 ESV Werkzeuge und Zubehör für die elektrische Stromverteilung GmbH Pompe hydraulique mobile pour outils à entraînement hydraulique
WO2011064022A1 (fr) * 2009-11-26 2011-06-03 Robert Bosch Gmbh Ensemble pompe pour système d'injection haute pression
EP2336541A1 (fr) * 2009-12-16 2011-06-22 Continental Automotive GmbH Pompe à carburant

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4650629B2 (ja) * 2004-11-16 2011-03-16 株式会社アドヴィックス ラジアルプランジャポンプ
DE102015226735A1 (de) 2015-12-28 2017-06-29 Robert Bosch Gmbh Kraftstoffsystem und Antriebsstrang
US20170260944A1 (en) * 2016-03-08 2017-09-14 K&N Engineering, Inc. Universal inline fuel pump
CN117916458A (zh) * 2021-08-27 2024-04-19 斯坦蒂内有限责任公司 用于马达驱动的高压燃料泵的燃料供给

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725212A2 (fr) 1995-02-06 1996-08-07 Zexel Corporation Système d'injection de combustible à haute pression

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3811773A1 (de) * 1988-04-08 1989-10-19 Pierburg Gmbh Brennstoffversorgungseinrichtung fuer eine brennkraftmaschine
US6149073A (en) * 1994-05-18 2000-11-21 Cummins Engine Company, Inc. Ceramic plunger for internal combustion engine high pressure fuel system
US5605448A (en) * 1995-07-31 1997-02-25 Martin, Sr.; Thomas B. AC fuel pump
JP3178372B2 (ja) * 1997-05-15 2001-06-18 トヨタ自動車株式会社 燃料ポンプ
DE19725563A1 (de) * 1997-06-17 1998-12-24 Mannesmann Rexroth Ag Radialkolbenpumpe
GB0100667D0 (en) * 2001-01-10 2001-02-21 Delphi Tech Inc Fuel pump
DE10111837B4 (de) * 2001-03-13 2005-09-29 Robert Bosch Gmbh Kraftstoffzumesssystem für eine Brennkraftmaschine mit einem Hochdruckpumpen (HDP)-Modul
JP2002371941A (ja) * 2001-06-18 2002-12-26 Denso Corp 燃料噴射ポンプ
JP2003028055A (ja) * 2001-07-18 2003-01-29 Toyota Industries Corp 流体圧送装置及び流体貯留用タンク

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725212A2 (fr) 1995-02-06 1996-08-07 Zexel Corporation Système d'injection de combustible à haute pression

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503697B1 (de) * 2006-06-02 2008-06-15 Bosch Gmbh Robert Pumpenelement für eine hochdruckpumpe
WO2009043798A1 (fr) * 2007-09-28 2009-04-09 ESV Werkzeuge und Zubehör für die elektrische Stromverteilung GmbH Pompe hydraulique mobile pour outils à entraînement hydraulique
WO2011064022A1 (fr) * 2009-11-26 2011-06-03 Robert Bosch Gmbh Ensemble pompe pour système d'injection haute pression
EP2336541A1 (fr) * 2009-12-16 2011-06-22 Continental Automotive GmbH Pompe à carburant

Also Published As

Publication number Publication date
EP1310672B1 (fr) 2006-10-18
EP1310672A3 (fr) 2005-06-08
JP2003184683A (ja) 2003-07-03
DE10154552A1 (de) 2003-05-15
DE50208486D1 (de) 2006-11-30

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