EP1794441A1 - Metal protector for fuel manifold to avoid damage upon impact - Google Patents
Metal protector for fuel manifold to avoid damage upon impactInfo
- Publication number
- EP1794441A1 EP1794441A1 EP05800242A EP05800242A EP1794441A1 EP 1794441 A1 EP1794441 A1 EP 1794441A1 EP 05800242 A EP05800242 A EP 05800242A EP 05800242 A EP05800242 A EP 05800242A EP 1794441 A1 EP1794441 A1 EP 1794441A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal
- columns
- plastic
- component
- fixing
- 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
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
- 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
- F02M2200/18—Fuel-injection apparatus having means for maintaining safety not otherwise provided for
- F02M2200/185—Fuel-injection apparatus having means for maintaining safety not otherwise provided for means for improving crash safety
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
Definitions
- the present invention relates to the protection of injection ramps, called common or common-rail ramps, which are mounted on internal combustion engines.
- the so-called common-rail injection systems that are used to supply an internal combustion engine with fuel comprise, in particular, a pressurized fuel storage ramp which supplies the injectors with fuel.
- This ramp is outside the motor. It is necessary to protect this ramp to avoid having any fuel fuits following a shock on the ramp, resulting for example from a fi rmal shock of the vehicle comprising a motor with such an injection system.
- Injection rail protectors have already been used, such as, for example, protectors in the form of a metal sheet fixed to the engine. These protectors are not completely satisfactory because they only take into account the impact resistance aspect.
- the invention provides a device for protecting against the shocks of a common injection rail mounted on an internal combustion engine comprising means for fixing a component on the device.
- the attachment means may be made in part of plastic, - the attachment means may be made in part of metal material, the device may comprise a metal frame, the frame metal may consist of a steel sheet, - the fixing means may be made in part of plastic by overmoulding of the metal frame.
- the attachment means may comprise mounting lugs of a cable.
- the component may be a coil supply module.
- FIGS. 1 and 2 there is shown a component 1 of an internal combustion engine.
- This component 1 is a casting part which comprises in particular ducts 2 of air intake.
- This component 1 may be a nozzle holder block.
- the injector spacer 1 is attached to the engine. It comprises injector wells 3 in which injectors 10 are fitted. Injector wells 3 are aligned with each other in a direction parallel to the longitudinal axis of the injector holder block 1.
- a common rail 1 1 is mounted on the injectors 1 0.
- the com mune ramp 1 1 consists of an elongate tube. It comprises a supply pipe 12 fuel pressurized by an injection pump not shown, and it distributes the fuel through orifices 1 3 connecting to the injectors 1 0.
- the ramp 1 1 is disposed above the injectors 1 0, above the injector holder block 1.
- a protective device for example a protective cover 20.
- the protective cover 20 comprises means for protecting the injection rail.
- a component on this cover 20 for example means for mounting a not shown coil supply module.
- fixing means may be made in part of plastic, for example in the context of a plastic molding operation. They can also be made partly in metallic material.
- the cover 20 consists of a metal frame 30 to resist these shocks, and a portion 40 overmolded plastic.
- the metal reinforcement 30 consists of a sheet of the cut and folded steel sheet type comprising columns 31, bearing ends 32, reinforcing parts 33a, 33b and 33c. of the overmoulded part 40, passages 35 for the screws 7 for fastening the cap 20 to the injector holder block 1, a main part 34.
- the metal reinforcement 30 In order to manufacture the metal reinforcement 30, a sheet metal plate is first cut to define the bearing ends 32, the columns 31 and the reinforcement portions 33a, 33b and 33c of the plastic part 40. folding the columns 31 to give them their tubular form. The columns 31 are then bent at about 90 degrees to the main part 34 and the main part 34 is bent at an angle of less than 90 degrees in the direction of the fixing columns along the line 34.
- the metal reinforcement 30 comprises two columns 31 and four support ends 32, two of which are arranged in front of the columns 31 once the main part 34 has been folded.
- the metal armature 30 is folded in the shape of a "U” or "V", so that the ends of the columns 31 and the bearing ends 32 form the ends of the U or Vé that rest on the hold injector door 1.
- the plastic part 40 surrounds the metal frame 30 with the exception of the columns 31 and the support ends 32, and it comprises a support interface 42, lugs 43 and support lugs 44 arranged at the ends of the protective hood.
- the plastic part 40 is made by overmolding around the metal frame 30; the metal armature 30 is first placed in a not shown mold, then a plastic material is injected which covers the metal armature 30.
- the advantage of this overmolding is that the plastic part 40 can integrate support or maintenance functions in relation to other components.
- the tabs 43 allow to fix and guide a not shown cable.
- there is a support interface 42 for fixing for example a reel supply module not shown.
- This portion 40 may be manufactured by any technique well known per se in the field of the implementation of plastics by molding.
- the metal frame 30 reinforces the plastic part, not only during shocks, but also for its support functions.
- the metal reinforcing portion 33a consolidates the support interface 42 made of plastic.
- the injector holder shim 1 comprises bosses 5 provided for receiving the ends of the columns 31.
- the bosses 5 are drilled and tapped to receive a screw 7 for fixing the protective cover 20 to the injector holder block 1.
- the bearing ends 32 of the metal frame 30 bear on the inter-ducts 4 of the injector holder block 1.
- the ends of the columns 31 are bevelled so that during tightening the force is distributed on the columns 31 and on the bearing ends 32. It thus limits the vibratory aspects of the cover 20 on the injector holder block 1.
- the protective cover 20 is arranged to protect the common rail 1 1 against shocks. Indeed, the columns 31 are close to the ramp 1 1 and are sized to withstand these shocks.
- the metal reinforcement 30 is a thick sheet of about 4 mm thick on which one carries out operations of simple formatting, and whose major role is to resist Fural shocks that may occur during an accident.
- the metal reinforcement 30 can serve as a reinforcement of the plastic part 40 for fixing other elements such as a coil feed module.
- the plastic part 40 comes to bring a good finish to the hood, and it protects the metal frame 30 against the outside environment.
- it may include support interfaces of other components of the engine and / or the vehicle.
- the invention is not limited to the embodiment described above, and it can be carried out integrally by plastic molding.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Vehicle Body Suspensions (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0452101A FR2875555B1 (en) | 2004-09-21 | 2004-09-21 | METAL PROTECTOR OF THE GAS RAMP TO AVOID DAMAGE DURING SHOCK |
PCT/FR2005/050769 WO2006032821A1 (en) | 2004-09-21 | 2005-09-20 | Metal protector for fuel manifold to avoid damage upon impact |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1794441A1 true EP1794441A1 (en) | 2007-06-13 |
EP1794441B1 EP1794441B1 (en) | 2008-05-28 |
Family
ID=34951593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05800242A Not-in-force EP1794441B1 (en) | 2004-09-21 | 2005-09-20 | Metal protector for fuel manifold to avoid damage upon impact |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1794441B1 (en) |
JP (1) | JP4812766B2 (en) |
AT (1) | ATE397158T1 (en) |
BR (1) | BRPI0515504A (en) |
DE (1) | DE602005007255D1 (en) |
FR (1) | FR2875555B1 (en) |
WO (1) | WO2006032821A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7610893B2 (en) * | 2006-02-10 | 2009-11-03 | Federal-Mogul Worldwide, Inc. | Plastic cover having metal reinforcement for internal combustion engine applications and method of construction |
FR2912472A1 (en) * | 2007-02-12 | 2008-08-15 | Renault Sas | Internal combustion engine i.e. oil engine, fitting for supporting air conditioning compressor, has protection unit for protecting part of manifold against shocks, extending along manifold, and provided at reduced distance from manifold |
JP6074135B2 (en) * | 2011-03-29 | 2017-02-01 | 現代自動車株式会社Hyundai Motor Company | Manufacturing method of intake manifold module for preventing automobile fuel leakage |
CN103397962A (en) * | 2013-07-04 | 2013-11-20 | 广西玉柴机器股份有限公司 | Engine high pressure oil tube cover plate |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0517419Y2 (en) * | 1987-04-04 | 1993-05-11 | ||
DE9410232U1 (en) * | 1994-06-27 | 1995-11-02 | Robert Bosch Gmbh, 70469 Stuttgart | Fuel injection device for internal combustion engines |
JP3310144B2 (en) * | 1995-09-13 | 2002-07-29 | 株式会社ユニシアジェックス | Fuel piping system |
DE19716513C2 (en) * | 1997-04-19 | 1999-02-11 | Mtu Friedrichshafen Gmbh | Fuel injection system for an internal combustion engine with a common rail |
DE19801171C1 (en) * | 1998-01-15 | 1999-04-15 | Daimler Chrysler Ag | fuel injector for multiple cylinder internal combustion engine |
JP2001317436A (en) * | 2000-05-09 | 2001-11-16 | Fuji Heavy Ind Ltd | Protecting device for fuel system of engine |
JP2003345417A (en) * | 2002-05-24 | 2003-12-05 | Bosch Automotive Systems Corp | Standardizing method of component characteristic code in production system for vehicle and controller for vehicle using standardized characteristic code |
JP4049684B2 (en) * | 2003-02-14 | 2008-02-20 | 愛知機械工業株式会社 | Engine fuel system protection device |
GB2399392A (en) * | 2003-03-13 | 2004-09-15 | Visteon Global Tech Inc | I.c. engine moulded fuel rail with crash-resistant protecting structure |
-
2004
- 2004-09-21 FR FR0452101A patent/FR2875555B1/en active Active
-
2005
- 2005-09-20 EP EP05800242A patent/EP1794441B1/en not_active Not-in-force
- 2005-09-20 AT AT05800242T patent/ATE397158T1/en not_active IP Right Cessation
- 2005-09-20 BR BRPI0515504-5A patent/BRPI0515504A/en active Search and Examination
- 2005-09-20 WO PCT/FR2005/050769 patent/WO2006032821A1/en active IP Right Grant
- 2005-09-20 JP JP2007531813A patent/JP4812766B2/en not_active Expired - Fee Related
- 2005-09-20 DE DE602005007255T patent/DE602005007255D1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2006032821A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1794441B1 (en) | 2008-05-28 |
DE602005007255D1 (en) | 2008-07-10 |
FR2875555B1 (en) | 2009-01-30 |
WO2006032821A1 (en) | 2006-03-30 |
BRPI0515504A (en) | 2008-07-29 |
FR2875555A1 (en) | 2006-03-24 |
JP2008513668A (en) | 2008-05-01 |
JP4812766B2 (en) | 2011-11-09 |
ATE397158T1 (en) | 2008-06-15 |
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