EP1076174A2 - Pompe à haute pression monocylindrique - Google Patents

Pompe à haute pression monocylindrique Download PDF

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Publication number
EP1076174A2
EP1076174A2 EP00116573A EP00116573A EP1076174A2 EP 1076174 A2 EP1076174 A2 EP 1076174A2 EP 00116573 A EP00116573 A EP 00116573A EP 00116573 A EP00116573 A EP 00116573A EP 1076174 A2 EP1076174 A2 EP 1076174A2
Authority
EP
European Patent Office
Prior art keywords
pump
cylinder
pressure pump
pressure
cylinder high
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
EP00116573A
Other languages
German (de)
English (en)
Other versions
EP1076174A3 (fr
EP1076174B1 (fr
Inventor
Helmut Rembold
Peter Ropertz
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 EP1076174A2 publication Critical patent/EP1076174A2/fr
Publication of EP1076174A3 publication Critical patent/EP1076174A3/fr
Application granted granted Critical
Publication of EP1076174B1 publication Critical patent/EP1076174B1/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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F04B1/0421—Cylinders
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
    • F04B11/0016—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a fluid spring
    • 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
    • F04B53/162—Adaptations of cylinders
    • F04B53/166—Cylinder liners
    • F04B53/168—Mounting of cylinder liners in cylinders
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped

Definitions

  • the invention relates to a single-cylinder high-pressure pump for High pressure supply in common rail injection systems from Internal combustion engines, with one in a pump housing recorded pump element, which is a pump piston includes, which is in a pump cylinder against the Preload force of a compression spring can be moved back and forth recorded and driven by a cam to with Pumping high pressure fuel into a rail.
  • the pump element from below, i.e. of the Cam drive side to insert into the pump housing and brace with a screw.
  • the contact surface for Absorption of the tensioning forces is on the upper side facing away from the cam drive Pump cylinder.
  • the tensile forces are over the full Length passed through the pump cylinder.
  • the Pump cylinder can be made of stainless steel and that Pump housing made of aluminum. Because of the different coefficients of thermal expansion of the different materials, it is required Increase the preload forces of the screw connection. This is the only way secure clamping in all operating conditions, e.g. from -40 ° C to + 140 ° C.
  • the high Preload forces can cause a banana-shaped deformation of the pump cylinder and thus to a clamping of the Guide the pump piston in operation.
  • the object of the invention is a single-cylinder high-pressure pump of the type described at the beginning with a provide longer life. Beyond that the single-cylinder high-pressure pump according to the invention is simple be built and inexpensive to manufacture.
  • the task is for a single-cylinder high-pressure pump High-pressure fuel supply in common rail injection systems of internal combustion engines, with an in a pump housing accommodated pump element, the one Pump piston includes the in a pump cylinder against the Preload force of a compression spring can be moved back and forth recorded and driven by a cam to with Pumping high pressure fuel into a rail solved in that on the remote from the cam drive Side in the pump housing an assembly opening for receiving of the pump element is provided.
  • a Supported by a flange at the lower end of the cylinder is not possible due to the limited installation space. A such support would be a much larger one Diameter of the pump cylinder require what would blow up the given space.
  • Another special embodiment of the invention is characterized in that on the by the cam drive opposite end of the pump cylinder formed a cone is in the assembled state of the high pressure pump a complementary cone in the pump housing cooperates.
  • the interacting cones ensure a particularly stable fixation of the pump cylinder in the Pump housing.
  • Another special embodiment of the invention is characterized in that the pump element in installed condition with the help of a locking element in the mounting opening for receiving the pump element is tense.
  • the closure element prevents loosening of the pump element in operation and can vary be constructed.
  • Another special embodiment of the invention is characterized in that on the closure element External thread is formed, with one on the Pump housing trained internal thread interacts.
  • the construction according to the invention ensures that the required in a given space Thread length for a permanent connection can be accommodated.
  • Another special embodiment of the invention is characterized in that the closure element with With the help of several screw connections on the pump housing is attached.
  • the screw connections can be made on one Pitch circle arranged to be concentric to that Pump cylinder is. This will loosen the Pump element safely prevented during operation.
  • the first embodiment shown in Fig. 1 Single-cylinder high-pressure pump according to the invention comprises a Pump housing 1.
  • the pump housing 1 of the high pressure pump is built into the housing 2 of an internal combustion engine.
  • a pump cylinder 4 is added in an elongated mounting opening 3 in the pump housing 1 .
  • a pump piston 5 can be moved back and forth added.
  • One end 6 of the pump piston 5 is by means of a Compression spring 7 against a cam 8 of a camshaft Engine biased.
  • the Compression spring 7 between two spring plates 9 and 10 clamped.
  • the spring plate 9 is based on that End of the pump cylinder 4 facing the cam drive.
  • the Spring plate 10 is at the end 6 of the pump piston 5 supported.
  • the end face 11 of the cam drive 8 which faces away from the cam drive 8 Pump piston 5 delimits a cylinder space 12 in the Pump cylinder 4.
  • the cylinder chamber 12 through one Closure element 13 delimits an inlet valve 14 is arranged.
  • the inlet valve 14 leads to the promotional fuel in the cylinder chamber 12. If the Pump piston 5 is moved into the cylinder space 12, the fuel in it is at high pressure acted upon. The high pressure fuel passes through an outlet valve 15 to the (not shown) Rail.
  • the closure element 13 has the shape of a cup, in the Bottom the inlet valve 14 is arranged. In the interior a pressure damper 17 is added to the cup.
  • the mounting opening 3 in the pump housing 1 has the shape a through hole with different Diameter sections. The smallest diameter is on the side facing the cam drive 8 and the largest diameter on that of the cam drive 8 facing away from the pump housing 1.
  • the second embodiment shown in FIG Invention largely corresponds to the first Embodiment. For the sake of simplicity, become Identical parts have the same reference numerals used. To avoid repetitions, the detailed description of the first above Exemplary embodiment with reference to FIG. 1.
  • FIG. 2 of the invention is that of the cam drive 8th opposite end of the pump cylinder 4 instead of the federal government Cone 20 formed.
  • the cone 20 works with one corresponding cone on the pump housing 1 together.
  • the Cone 20 on the pump cylinder 4 tapers to that Cam drive 8 back.
  • With the help of the closure element 13 the cone 20 is in contact with the corresponding Counter cone of the pump housing 1 held.
  • the Closure element 13 is in turn by means of screws 21 and 22 attached to the pump housing 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
EP20000116573 1999-08-13 2000-08-01 Pompe monocylindre à haute pression Expired - Lifetime EP1076174B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19938504 1999-08-13
DE1999138504 DE19938504A1 (de) 1999-08-13 1999-08-13 Einzylinder-Hochdruckpumpe

Publications (3)

Publication Number Publication Date
EP1076174A2 true EP1076174A2 (fr) 2001-02-14
EP1076174A3 EP1076174A3 (fr) 2003-11-19
EP1076174B1 EP1076174B1 (fr) 2005-11-02

Family

ID=7918356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000116573 Expired - Lifetime EP1076174B1 (fr) 1999-08-13 2000-08-01 Pompe monocylindre à haute pression

Country Status (3)

Country Link
EP (1) EP1076174B1 (fr)
JP (1) JP2001073907A (fr)
DE (2) DE19938504A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1275848A1 (fr) * 2001-07-13 2003-01-15 Robert Bosch Gmbh Pompe à carburant pour un système d'alimentation d' un moteur à combustion interne
EP1312801A2 (fr) * 2001-11-16 2003-05-21 Robert Bosch Gmbh Etage de pompe refroidi avec le carburant pompé
WO2009049776A1 (fr) * 2007-10-15 2009-04-23 Ixetic Bad Homburg Gmbh Pompe à pistons radiaux
CN103717872A (zh) * 2011-08-08 2014-04-09 德尔福技术控股有限公司 燃料泵

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1348864A4 (fr) * 2001-01-05 2005-03-16 Hitachi Ltd Pompe d'alimentation en carburant haute pression
DE10322603B4 (de) * 2003-05-20 2013-04-25 Robert Bosch Gmbh Kolbenpumpe, insbesondere Hochdruck-Kolbenpumpe für Brennkraftmaschinen mit Direkteinspritzung
DE10362375B3 (de) * 2003-05-20 2016-11-17 Robert Bosch Gmbh Hochdruck-Kolbenpumpe für Brennkraftmaschinen mit Direkteinspritzung
DE102004063074B4 (de) * 2004-12-28 2013-03-07 Robert Bosch Gmbh Kolbenpumpe, insbesondere Kraftstoff-Hochdruckpumpe für eine Brennkraftmaschine
DE102004063075B4 (de) * 2004-12-28 2015-11-26 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe für eine Brennkraftmaschine mit einem Stufenkolben und einem Mengensteuerventil
DE102006061231A1 (de) * 2006-12-22 2008-06-26 Robert Bosch Gmbh Hochdruckkolbenpumpe
DE102013224797A1 (de) 2013-12-04 2015-06-11 Robert Bosch Gmbh Kraftstoffpumpe mit einem Kolben, an dessen einem Antrieb zugewandten Endabschnitt ein Federteiler angeordnet ist
JP6361337B2 (ja) * 2014-07-10 2018-07-25 株式会社デンソー 高圧ポンプ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4107979A1 (de) * 1991-03-13 1992-09-17 Bosch Gmbh Robert Hydraulische hochdruckpumpe fuer kraftfahrzeug-bremsanlagen
EP0757174A2 (fr) * 1995-07-31 1997-02-05 WOODWARD GOVERNOR GERMANY GmbH Procédé de changement de l'avance d'une pompe d'injection de carburant et pompe d'injection de carburant
EP0878621A2 (fr) * 1997-05-16 1998-11-18 Mitsubishi Denki Kabushiki Kaisha Pompe d'alimentation en carburant à haute pression
DE19742611A1 (de) * 1997-07-30 1999-02-04 Bosch Gmbh Robert Kolbenpumpe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS635158A (ja) * 1986-06-24 1988-01-11 Diesel Kiki Co Ltd ユニツトインジエクタ−

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4107979A1 (de) * 1991-03-13 1992-09-17 Bosch Gmbh Robert Hydraulische hochdruckpumpe fuer kraftfahrzeug-bremsanlagen
EP0757174A2 (fr) * 1995-07-31 1997-02-05 WOODWARD GOVERNOR GERMANY GmbH Procédé de changement de l'avance d'une pompe d'injection de carburant et pompe d'injection de carburant
EP0878621A2 (fr) * 1997-05-16 1998-11-18 Mitsubishi Denki Kabushiki Kaisha Pompe d'alimentation en carburant à haute pression
DE19742611A1 (de) * 1997-07-30 1999-02-04 Bosch Gmbh Robert Kolbenpumpe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1275848A1 (fr) * 2001-07-13 2003-01-15 Robert Bosch Gmbh Pompe à carburant pour un système d'alimentation d' un moteur à combustion interne
EP1312801A2 (fr) * 2001-11-16 2003-05-21 Robert Bosch Gmbh Etage de pompe refroidi avec le carburant pompé
EP1312801A3 (fr) * 2001-11-16 2004-05-12 Robert Bosch Gmbh Etage de pompe refroidi avec le carburant pompé
WO2009049776A1 (fr) * 2007-10-15 2009-04-23 Ixetic Bad Homburg Gmbh Pompe à pistons radiaux
CN103717872A (zh) * 2011-08-08 2014-04-09 德尔福技术控股有限公司 燃料泵
CN103717872B (zh) * 2011-08-08 2016-06-01 德尔福国际运营卢森堡有限公司 燃料泵

Also Published As

Publication number Publication date
EP1076174A3 (fr) 2003-11-19
DE50011493D1 (de) 2005-12-08
EP1076174B1 (fr) 2005-11-02
DE19938504A1 (de) 2001-03-08
JP2001073907A (ja) 2001-03-21

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