EP2235353A1 - Pompe à carburant haute pression - Google Patents

Pompe à carburant haute pression

Info

Publication number
EP2235353A1
EP2235353A1 EP08864925A EP08864925A EP2235353A1 EP 2235353 A1 EP2235353 A1 EP 2235353A1 EP 08864925 A EP08864925 A EP 08864925A EP 08864925 A EP08864925 A EP 08864925A EP 2235353 A1 EP2235353 A1 EP 2235353A1
Authority
EP
European Patent Office
Prior art keywords
pump
pressure
low
pressure fuel
fuel
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
EP08864925A
Other languages
German (de)
English (en)
Other versions
EP2235353B1 (fr
Inventor
Johann Warga
Friedrich Boecking
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 EP2235353A1 publication Critical patent/EP2235353A1/fr
Application granted granted Critical
Publication of EP2235353B1 publication Critical patent/EP2235353B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F02M59/02—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
    • F02M59/04—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a high-pressure fuel pump for operating an internal combustion engine and consisting of a pump housing and two mounted on this pump cylinder heads, in each of which a pump piston for compression of low-pressure fuel from a low pressure inlet in each case a high pressure chamber to high pressure and to promote the fuel to each a high-pressure port of a high-pressure accumulator is guided, wherein the two pump pistons are operable via a common polygonal design of a pump camshaft.
  • such a high-pressure fuel pump which consists of a split pump housing in which three guided pump pistons are driven by a common polygon of a pump camshaft.
  • the pump pistons are in each case arranged at an angle of 120 ° to one another and, due to the movement impressed by the pump camshaft, compress fuel from a low-pressure inlet into pressure spaces arranged in each case above the pump pistons to high pressure.
  • High-pressure fuel is further promoted by high pressure lines to a high-pressure accumulator.
  • a high-pressure fuel pump is suitable at a rotational speed of the pump camshaft equal to the crankshaft of the engine for the operation of a six-cylinder internal combustion engine.
  • a disadvantage of the known prior art is that when using such a high-pressure fuel pump for an internal combustion engine with four cylinders, and thus from an economic point of view with two pump piston, another pump housing is used, in which the two pump pistons are arranged opposite to a pump camshaft.
  • another pump housing leads to an increase in the
  • this object is achieved in that the two pump cylinder heads are mounted on the pump housing such that the two pump pistons are at an angle of 120 ° to each other.
  • a metering unit for supplying the two low pressure inlets of the pump piston is arranged in a 120 ° angle to both pump pistons. An arrangement in this area is due to the available space and the good accessibility of the two low-pressure feeds of advantage.
  • the drive speed of the high pressure fuel pump with respect to the speed of the internal combustion engine is 2/3.
  • the metering unit is integrated in a low-pressure block, which is placed on the pump housing and on the attachment surface has a Ausappelun ⁇ , in which the two low-pressure inlets converge at an angle greater than 90 °.
  • a low-pressure connection is arranged in the low pressure block at 90 ° to the metering unit. It is advantageous here that the fuel supply to the metering unit is arranged very compactly on the high-pressure fuel pump.
  • the single FIGURE shows a sectional view of the high-pressure fuel pump according to the invention, cut in the plane of arrangement of the pump piston.
  • This high-pressure fuel pump consists of a pump housing 1, on which the two pump cylinder heads 2a and 2b are arranged at a 120 ° angle to each other.
  • the pump piston 3a and 3b are guided, which are in the middle of the pump housing 1 with a common polygonal training 4 a pump camshaft 5 in contact.
  • the suction valves 7a and 7b of the respective pump pistons 3a and 3b are also supplied with low-pressure fuel via low-pressure inlets 6a and 6b.
  • the suction valves 7a and 7b in turn attack the above the pump piston 3 a and 3b arranged
  • a metering unit 11 is arranged, which is supplied by means of a low-pressure connection 12 by a feed pump, not shown, with low-pressure fuel and metered this, depending on the operating point of
  • a high-pressure port 13a and 13b are arranged, which are in communication with a high-pressure accumulator, not shown.
  • a translatory movement of the pump pistons 3 a and 3 b is generated by the rotational movement of the pump camshaft and the polygonal training 4, which results in that via the low pressure inlets 6 a and 6 b and the suction valves 7 a and 7 b fuel into the pressure chambers 8 a and 8b is sucked, there compressed to high pressure and transported to the high pressure ports 13a and 13b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Reciprocating Pumps (AREA)
EP08864925A 2007-12-21 2008-11-24 Pompe à carburant haute pression Not-in-force EP2235353B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007062181A DE102007062181A1 (de) 2007-12-21 2007-12-21 Hochdruckkraftstoffpumpe
PCT/EP2008/066048 WO2009080425A1 (fr) 2007-12-21 2008-11-24 Pompe à carburant haute pression

Publications (2)

Publication Number Publication Date
EP2235353A1 true EP2235353A1 (fr) 2010-10-06
EP2235353B1 EP2235353B1 (fr) 2011-09-28

Family

ID=40261020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08864925A Not-in-force EP2235353B1 (fr) 2007-12-21 2008-11-24 Pompe à carburant haute pression

Country Status (5)

Country Link
EP (1) EP2235353B1 (fr)
CN (1) CN101903639A (fr)
AT (1) ATE526500T1 (fr)
DE (1) DE102007062181A1 (fr)
WO (1) WO2009080425A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2530315A1 (fr) 2011-06-02 2012-12-05 Delphi Technologies Holding S.à.r.l. Lubrification de pompe à carburant
CN103089507B (zh) * 2013-01-09 2015-06-10 中国第一汽车股份有限公司无锡油泵油嘴研究所 双排六缸径向式共轨供油泵
DE102018108406A1 (de) 2017-06-22 2018-12-27 Denso Corporation Hochdruckkraftstoffpumpe und Kraftstoffversorgungssystem

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB460327A (en) * 1935-11-27 1937-01-26 Bristol Aeroplane Co Ltd Improvements in or relating to fuel-injection pumps for internal-combustion engines
US2902989A (en) * 1957-02-04 1959-09-08 Gen Motors Corp Charge forming means
DE19635164A1 (de) 1996-08-30 1998-03-05 Bosch Gmbh Robert Kolbenpumpe
DE102004017049A1 (de) * 2004-04-07 2005-10-27 Robert Bosch Gmbh Pumpenelemente in Reihenanordnung für Bremsanlagen
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
DE102006017301B4 (de) 2006-04-12 2008-03-06 Siemens Ag Pumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009080425A1 *

Also Published As

Publication number Publication date
EP2235353B1 (fr) 2011-09-28
DE102007062181A1 (de) 2009-06-25
ATE526500T1 (de) 2011-10-15
CN101903639A (zh) 2010-12-01
WO2009080425A1 (fr) 2009-07-02

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