EP1446573A1 - Brennstoffeinspritzanlage - Google Patents

Brennstoffeinspritzanlage

Info

Publication number
EP1446573A1
EP1446573A1 EP02774400A EP02774400A EP1446573A1 EP 1446573 A1 EP1446573 A1 EP 1446573A1 EP 02774400 A EP02774400 A EP 02774400A EP 02774400 A EP02774400 A EP 02774400A EP 1446573 A1 EP1446573 A1 EP 1446573A1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
section
injection system
inlet
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.)
Withdrawn
Application number
EP02774400A
Other languages
German (de)
English (en)
French (fr)
Inventor
Werner Berger
Martin Mueller
Andreas Glaser
Anh Tuan Hoang
Martin Buehner
Cedric Olivier
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 EP1446573A1 publication Critical patent/EP1446573A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004Joints; Sealings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down

Definitions

  • the invention relates to a fuel injection system for injecting fuel into an internal combustion engine according to the preamble of the main claim.
  • the fuel injection system comprises a metal fuel distributor line which is connected to at least one fuel injection valve via at least one branch line, the branch line being designed as a metal pipe and being connected to the fuel injection valve by a screw connection. Easily bendable metal is used as the branch line material.
  • a metallic thin-walled bellows in the form of a corrugated tube bellows is provided, by means of which a lateral offset between the attachment point of the branch line on the fuel distributor line and the installation position of the fuel injection valve is compensated.
  • a disadvantage of the fuel injection system known from DE-OS 28 29 057 is that the corrugated tube bellows Minimum number of corrugations required in order to be able to compensate for tolerances of the overall length, as well as tilting of the axes of the fuel injector and the starting point of the fuel distribution line.
  • the angle compensation (angular compensation) and the lateral compensation (lateral compensation) require a minimum length of the corrugated pipe bellows.
  • a pipeline connection in the form of a corrugated pipe is known from US Pat. No. 2,014,355, which is intended to prevent or reduce the transmission of vibrations.
  • the outside of the corrugated pipe is surrounded by a sheath which does not touch the corrugated pipe and which is rigidly connected at one end to the one pipe section.
  • the sleeve is sealed off from the other tube section by a flexible seal.
  • the casing shields noises emanating from the corrugated tube.
  • the fuel injection system according to the invention with the characterizing features of the main claim has the advantage that the inlet and the flexible section have a low overall height and still enable angle compensation and lateral compensation in a large area.
  • the compensation takes place by elastic deformation of the flexible section itself, and there is no risk of a seal becoming leaky.
  • a third sleeve section with the largest diameter axially between a first and a second is advantageous Arranged sleeve section and the first sleeve section and second sleeve section have the same diameter.
  • an angular compensation and lateral compensation can be achieved with a small overall length.
  • the double bends in the axial cross section are advantageously S-shaped.
  • the deformation of the flexible section is evenly distributed over the S-shaped area. Length compensation over a wide range is advantageously made possible.
  • the sleeve sections and the bends can consist of sheet metal.
  • Fig. 1 shows a section through an embodiment of a fuel injection system according to the invention in the sectional plane of a fuel injection valve and an inlet of a fuel distributor line.
  • Fig. 1 shows an axial section through an embodiment of an inventive
  • Fuel injection system 1 in the plane of a fuel injection valve 2 and an inlet 3 of a fuel distribution line, not shown here.
  • the fuel injection valve 2 is inserted into a bore in a cylinder head 5 of an internal combustion engine and is shown in section in the area of an inlet section 6.
  • the fuel injector 2 is sealed by a sealing ring 8 made of, for example, elastomer and arranged in a groove 7.
  • a first sleeve section 9 is connected to the inlet 3 via a weld seam 10.
  • a second sleeve section 11 is connected to a guide section 12a, which is inserted into the inlet section 6 of the fuel injection valve 2 and which has a groove 12b with a sealing ring 12c for sealing off the inlet section 6.
  • the first sleeve section 9 and the second sleeve section 11 are enclosed radially on the outside by a third sleeve section 13.
  • the first, second and third sleeve sections 9, 11, 13 are connected by means of double bends 14, which are S-shaped in the illustrated axial cross section.
  • First sleeve section 9, second sleeve section 11, third sleeve section 13 and S-shaped bends 14 form a flexible section 16.
  • the flexible section 16 is made of a metal sheet, for example a spring steel.
  • a connector plug 15 for controlling the fuel injection valve 2 is formed on the inlet section 6.
  • a compensation can advantageously take place in the event of a lateral deviation or a tilting between inlet 3 and inlet section 6. Deviations in the distance between inlet 3 and inlet section 6 can also be compensated for by deforming the flexible section 16, in particular the S-shaped bends 14. Only a small overall height of the flexible section 16 is required, although relatively large tolerances can be compensated for compared to the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP02774400A 2001-11-30 2002-09-23 Brennstoffeinspritzanlage Withdrawn EP1446573A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10158787 2001-11-30
DE10158787A DE10158787A1 (de) 2001-11-30 2001-11-30 Brennstoffeinspritzanlage
PCT/DE2002/003600 WO2003048562A1 (de) 2001-11-30 2002-09-23 Brennstoffeinspritzanlage

Publications (1)

Publication Number Publication Date
EP1446573A1 true EP1446573A1 (de) 2004-08-18

Family

ID=7707527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02774400A Withdrawn EP1446573A1 (de) 2001-11-30 2002-09-23 Brennstoffeinspritzanlage

Country Status (5)

Country Link
US (1) US6843233B2 (ja)
EP (1) EP1446573A1 (ja)
JP (1) JP2005511955A (ja)
DE (1) DE10158787A1 (ja)
WO (1) WO2003048562A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4267433B2 (ja) * 2003-11-25 2009-05-27 トヨタ自動車株式会社 燃料噴射弁用燃焼ガスシール
DE102004036626A1 (de) * 2004-07-29 2006-03-23 Robert Bosch Gmbh Brennstoffeinspritzsystem
US7107969B2 (en) * 2004-09-28 2006-09-19 Ford Global Technologies, Llc Twist-lock fuel injector assembly
DE102005006641A1 (de) * 2005-02-14 2006-08-24 Siemens Ag Einspritzventil zum Einspritzen von Kraftstoff und Zylinderkopf
JP4546404B2 (ja) * 2006-01-25 2010-09-15 本田技研工業株式会社 エンジンの燃料噴射弁取付け構造
EP1862666A1 (en) * 2006-06-01 2007-12-05 Siemens Aktiengesellschaft Coupling body for a coupling arrangement and coupling arrangement
US20080098989A1 (en) * 2006-10-31 2008-05-01 Caterpillar Inc. Fuel-injection system
DE102007035714A1 (de) 2007-07-30 2009-02-05 Robert Bosch Gmbh Brennstoff-Einspritzanlage mit Ausgleichselement
US11326448B2 (en) 2019-12-04 2022-05-10 Saudi Arabian Oil Company Pressure testing systems for subterranean rock formations
US11542815B2 (en) 2020-11-30 2023-01-03 Saudi Arabian Oil Company Determining effect of oxidative hydraulic fracturing
US11649702B2 (en) 2020-12-03 2023-05-16 Saudi Arabian Oil Company Wellbore shaped perforation assembly
US11619127B1 (en) 2021-12-06 2023-04-04 Saudi Arabian Oil Company Wellhead acoustic insulation to monitor hydraulic fracturing

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR658066A (fr) 1928-07-25 1929-05-30 Raccord métallique souple, pour conduites de liquides ou de gaz
US2014355A (en) 1933-02-27 1935-09-10 United States Gypsum Co Vibration isolating pipe connection
US2232656A (en) * 1940-01-20 1941-02-18 E B Badger & Sons Company Method of welding stainless steel and product thereof
US2407745A (en) * 1944-08-09 1946-09-17 Jacobson Franz Rotary joint
US2876801A (en) * 1955-03-10 1959-03-10 Breeze Corp Metal convolution tubing
US3315704A (en) * 1963-06-17 1967-04-25 Gen Connector Corp Flexible bellows
FR1444034A (fr) 1965-05-07 1966-07-01 Calorstat Dispositif d'accouplement pour éléments tubulaires
FR1527170A (fr) * 1967-04-20 1968-05-31 Moulinex Sa Tube flexible
DE2235012A1 (de) * 1972-07-17 1974-01-31 Emil Siegwart Flexibles wellrohr
DE2829057A1 (de) 1978-07-01 1980-01-10 Bosch Gmbh Robert Kraftstoffeinspritzanlage
DE2948065C2 (de) * 1979-11-29 1983-11-17 IWK Regler und Kompensatoren GmbH, 7513 Stutensee Faltenbalg
US4283078A (en) * 1980-05-01 1981-08-11 Ross Victor H Flexible joint protector
US4540203A (en) 1982-09-27 1985-09-10 The United States Of America As Represented By The United States Department Of Energy Rolling cuff flexible bellows
CN85100678B (zh) 1985-04-01 1985-09-10 铁道部科学研究院机车车辆研究所 (双)波峰有内凹的挠性元件
AT4632U1 (de) * 2000-05-25 2001-09-25 Avl List Gmbh Einspritzsystem für eine brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03048562A1 *

Also Published As

Publication number Publication date
WO2003048562A1 (de) 2003-06-12
JP2005511955A (ja) 2005-04-28
US20040112339A1 (en) 2004-06-17
US6843233B2 (en) 2005-01-18
DE10158787A1 (de) 2003-06-12

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