EP1582736B1 - Safety guard for a fuel rail - Google Patents

Safety guard for a fuel rail Download PDF

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Publication number
EP1582736B1
EP1582736B1 EP05300244A EP05300244A EP1582736B1 EP 1582736 B1 EP1582736 B1 EP 1582736B1 EP 05300244 A EP05300244 A EP 05300244A EP 05300244 A EP05300244 A EP 05300244A EP 1582736 B1 EP1582736 B1 EP 1582736B1
Authority
EP
European Patent Office
Prior art keywords
protective device
plate
pins
screwed
cylinder head
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.)
Not-in-force
Application number
EP05300244A
Other languages
German (de)
French (fr)
Other versions
EP1582736A1 (en
Inventor
Laurent Delaigue
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to PL05300244T priority Critical patent/PL1582736T3/en
Publication of EP1582736A1 publication Critical patent/EP1582736A1/en
Application granted granted Critical
Publication of EP1582736B1 publication Critical patent/EP1582736B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • 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

Definitions

  • the present invention relates to the protection of the fuel supply ramps of an internal combustion engine against shocks, especially in the event of frontal deformation of the engine block.
  • the connecting flange of the intake manifold is made of plastic.
  • a simple solution for protecting the fuel supply ramps is to replace the plastic flange with an aluminum flange so that a metal shim is available.
  • the shim is rigid, it transmits the shocks in full, without the possibility of depreciation by deformation.
  • any rigid screen attached to the engine independently of the intake manifold has the same drawback of transmitting to it the bulk of the shock received.
  • such a screen is generally difficult to implement in the engine compartment, for reasons of space.
  • the present invention aims to provide in better conditions, the protection of a fuel supply ramp in the event of a frontal impact of the vehicle.
  • a protection device consisting of a crushable deformable assembly fixed on the cylinder head, and a reinforcement stand fixed on the one hand on this assembly, and on the other hand on the cylinder block.
  • this device comprises at least one small column crashing in the event of impact and oriented in the direction of the fixing screws of the intake manifold on the cylinder head.
  • the body of the proposed protection device consisting of a protective sheet 1, 2 columns and a stand 4.
  • the sheet 1 is connected to the columns by reinforcements 3, appearing on the figures 1 and 2 , which also show the stand 4 and the location of these different elements relative to the cylinder head 7, to the crankcase 8, to the inlet distributor 9, and to the fuel supply rail 11.
  • the proposed protection device consists in fact of a deformable assembly by crushing fixed on the cylinder head 7, and the reinforcement stand 4, fixed on the one hand on this assembly, and on the other hand on the cylinder block 8.
  • the deformable assembly is constituted by the sheet 1 and by columns 2.
  • the sheet 1 is screwed preferably on the yoke 7 by the screws 5, and the stand 4 is screwed preferably on the cylinder block 8 and on the sheet 1 by the screws 6.
  • the columns 2, here four in number, are attached to the sheet 1, preferably by welding. Their function is to crash gradually in case of shock. They are oriented in the direction of the fastening screws 10 of the intake distributor 9 on the cylinder head 7.
  • the plate 1 is disposed in front of the feed ramp 11, so as to be protected by the entire device in case frontal shock.
  • the rigidity of the columns 2 is reinforced by the reinforcements 4, screwed both on each small column 2, and on the sheet 1.
  • the reinforcements 4 screwed both on each small column 2, and on the sheet 1.
  • the protection device proposed by the invention which "encapsulates" the fuel supply ramp on the intake face of the engine, allows the protection of this ramp during a frontal deformation of the engine compartment, by progressive crushing of the balusters. This crash is controlled by the choice of optimal dimensions for the balusters, which can be done through recommended calculations.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The device has a protection plate (1) connected to pin guides (2) by reinforcements (3). The plate is screwed on a cylinder head by a screw (5). A reinforcing stand (4) is screwed on a cylinder case (8) and on the plate, using a screw (6). The guides are progressively compressed in case of impact, and are oriented in the direction of a clamping bolt (10) of an intake diffuser (9). The plate is placed in front of a supply manifold (11).

Description

La présente invention concerne la protection des rampes d'alimentation de carburant de moteur à combustion interne contre les chocs, notamment en cas de déformation frontale du bloc moteur.The present invention relates to the protection of the fuel supply ramps of an internal combustion engine against shocks, especially in the event of frontal deformation of the engine block.

Sur de nombreux moteurs, la bride de liaison du répartiteur d'admission est en matière plastique. Une solution simple pour assurer la protection des rampes d'alimentation de carburant, consiste à remplacer la bride en plastique par une bride en aluminium, de manière à disposer d'une cale de protection métallique. Toutefois, si la cale est rigide, elle transmet intégralement les chocs, sans possibilité d'amortissement par déformation.On many engines, the connecting flange of the intake manifold is made of plastic. A simple solution for protecting the fuel supply ramps is to replace the plastic flange with an aluminum flange so that a metal shim is available. However, if the shim is rigid, it transmits the shocks in full, without the possibility of depreciation by deformation.

Dans les mêmes conditions, tout écran rigide fixé sur le moteur indépendamment de la rampe d'admission, présente le même inconvénient de transmettre à celle-ci l'essentiel du choc reçu. De plus, un tel écran est généralement difficile à implanter dans le compartiment moteur, pour des raisons d'encombrement.Under the same conditions, any rigid screen attached to the engine independently of the intake manifold has the same drawback of transmitting to it the bulk of the shock received. In addition, such a screen is generally difficult to implement in the engine compartment, for reasons of space.

Dans la mesure où les rampes d'alimentation sont habituellement en matière plastique, et où les risques de déclenchement d'incendie en cas de rupture sont réels, les systèmes de protection qui ne sont pas capables d'amortir les chocs, ne sont pas satisfaisants.As the supply ramps are usually made of plastic, and where the risk of fire triggering in case of breakage is real, protection systems that are not capable of absorbing shocks are unsatisfactory. .

La présente invention vise à assurer dans de meilleures conditions, la protection d'une rampe d'alimentation de carburant en cas de choc frontal du véhicule.The present invention aims to provide in better conditions, the protection of a fuel supply ramp in the event of a frontal impact of the vehicle.

Dans ce but, elle propose un dispositif de protection composé d'un ensemble déformable par écrasement fixé sur la culasse, et d'une béquille de renforcement fixée d'une part sur cet ensemble, et d'autre part sur le carter cylindre.For this purpose, it proposes a protection device consisting of a crushable deformable assembly fixed on the cylinder head, and a reinforcement stand fixed on the one hand on this assembly, and on the other hand on the cylinder block.

De préférence, ce dispositif comprend au moins une colonnette s'écrasant progressivement en cas de choc et orientée dans la direction des vis de fixation du répartiteur d'admission sur la culasse.Preferably, this device comprises at least one small column crashing in the event of impact and oriented in the direction of the fixing screws of the intake manifold on the cylinder head.

D'autres caractéristiques et avantages de l'invention ressortiront clairement à la lecture de la description suivante d'un mode de réalisation non limitatif de celle-ci, en se reportant aux dessins annexés, sur lesquels :

  • la figure 1 est une vue d'ensemble du moteur équipé du protecteur,
  • la figure 2 est une vue du côté du dispositif proposé, et
  • la figure 3 est une vue de dessus du même dispositif
Other features and advantages of the invention will become clear from reading the following description of a non-limiting embodiment thereof, with reference to the accompanying drawings, in which:
  • the figure 1 is an overview of the motor equipped with the protector,
  • the figure 2 is a view of the side of the proposed device, and
  • the figure 3 is a top view of the same device

Sur les figures, on voit le corps du dispositif de protection proposé, constitué d'une tôle de protection 1, de colonnettes 2 et d'une béquille 4. La tôle 1 est reliée aux colonnettes par des renforts 3, apparaissant sur les figures 1 et 2, qui montrent également la béquille 4 et l'emplacement de ces différents éléments par rapport à la culasse 7, au carter-cylindre 8, au répartiteur d'admission 9, et à la rampe d'alimentation en carburant 11.In the figures, we see the body of the proposed protection device consisting of a protective sheet 1, 2 columns and a stand 4. The sheet 1 is connected to the columns by reinforcements 3, appearing on the figures 1 and 2 , which also show the stand 4 and the location of these different elements relative to the cylinder head 7, to the crankcase 8, to the inlet distributor 9, and to the fuel supply rail 11.

Le dispositif de protection proposé se compose en effet d'un ensemble déformable par écrasement fixé sur la culasse 7, et de la béquille de renforcement 4, fixée d'une part sur cet ensemble, et d'autre part sur le carter cylindre 8.The proposed protection device consists in fact of a deformable assembly by crushing fixed on the cylinder head 7, and the reinforcement stand 4, fixed on the one hand on this assembly, and on the other hand on the cylinder block 8.

L'ensemble déformable est constitué par la tôle 1 et par des colonnettes 2. La tôle 1 est vissée de préférence sur la culasse 7 par les vis 5, et la béquille 4 est vissée de préférence sur le carter cylindre 8 et sur la tôle 1, par les vis 6. Les colonnettes 2, ici au nombre de quatre, sont rapportées sur la tôle 1, de préférence par soudage. Leur fonction est de s'écraser progressivement en cas de choc. Elles sont orientées dans la direction des vis de fixation 10 du répartiteur d'admission 9 sur la culasse 7. La tôle 1 est disposée en avant de la rampe d'alimentation 11, de manière à être protégée par l'ensemble du dispositif en cas de choc frontal.The deformable assembly is constituted by the sheet 1 and by columns 2. The sheet 1 is screwed preferably on the yoke 7 by the screws 5, and the stand 4 is screwed preferably on the cylinder block 8 and on the sheet 1 by the screws 6. The columns 2, here four in number, are attached to the sheet 1, preferably by welding. Their function is to crash gradually in case of shock. They are oriented in the direction of the fastening screws 10 of the intake distributor 9 on the cylinder head 7. The plate 1 is disposed in front of the feed ramp 11, so as to be protected by the entire device in case frontal shock.

La rigidité des colonnettes 2 est renforcée par les renforts 4, vissés à la fois sur chaque colonnette 2, et sur la tôle 1. Sur les figures, on compte trois vis de fixation 5 de la tôle 1 sur la culasse 7, mais ce nombre n'est pas limitatif.The rigidity of the columns 2 is reinforced by the reinforcements 4, screwed both on each small column 2, and on the sheet 1. In the figures, there are three fixing screws 5 of the sheet 1 on the cylinder head 7, but this number is not limiting.

Enfin, un léger jeu doit être prévu au montage, entre l'extrémité des colonnettes 2 et les têtes de vis de fixation 10 du répartiteur 9, pour éviter que le dispositif soit hyperstatique.Finally, a slight clearance must be provided for mounting, between the end of the columns 2 and the fixing screw heads 10 of the distributor 9, to prevent the device is hyperstatic.

En conclusion, le dispositif de protection proposé par l'invention, qui « encapsule » la rampe d'alimentation de carburant sur la face d'admission du moteur, permet la protection de cette rampe lors d'une déformation frontale du compartiment moteur, par écrasement progressif des colonnettes. Cet écrasement est maîtrisé par le choix de dimensions optimales pour les colonnettes, qui peut être effectué grâce à des calculs de préconisation.In conclusion, the protection device proposed by the invention, which "encapsulates" the fuel supply ramp on the intake face of the engine, allows the protection of this ramp during a frontal deformation of the engine compartment, by progressive crushing of the balusters. This crash is controlled by the choice of optimal dimensions for the balusters, which can be done through recommended calculations.

Claims (10)

  1. Protective device for protecting a combustion engine fuel supply rail (11) against impacts, characterized in that it is made up of an assembly (1, 2) that can be deformed in crushing, fixed to the cylinder head (7) of the engine, and of a reinforcing strut (4) fixed, on the one hand, to this deformable assembly and, on the other hand, to the cylinder block (8) of the engine.
  2. Protective device according to Claim 1, characterized in that it comprises at least one pin (2) that crumples progressively in the event of an impact.
  3. Protective device according to Claim 2, characterized in that the pins (2) are directed in the direction of the screws (10) that attach the inlet manifold (9) to the cylinder head (7).
  4. Protective device according to Claim 2 or 3, characterized in that the pins (2) are fixed to a plate (1) positioned forward of the supply rail (11) with respect to frontal impacts.
  5. Protective device according to Claim 4, characterized in that the plate (1) is screwed to the cylinder head (7).
  6. Protective device according to Claim 3, 4 or 5, characterized in that a small clearance between the end of the pins (2) and the screws (10) that attach the inlet manifold (9) is provided at the time of assembly.
  7. Protective device according to one of the preceding claims, characterized in that the strut (4) is screwed to the protective plate (1) and to the cylinder block (8).
  8. Protective device according to one of Claims 4 to 7, characterized in that the pins (2) are welded to the protective plate (1).
  9. Protective device according to one of Claims 2 to 8, characterized in that the rigidity of the pins (2) is enhanced by strengtheners (3) screwed both to the pins (2) and to the plate (1).
  10. Protective device according to one of the preceding claims, characterized in that it encapsulates the fuel supply rail (11) on the inlet side of the engine.
EP05300244A 2004-04-02 2005-04-01 Safety guard for a fuel rail Not-in-force EP1582736B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05300244T PL1582736T3 (en) 2004-04-02 2005-04-01 Safety guard for a fuel rail

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0450651 2004-04-02
FR0450651A FR2868474B1 (en) 2004-04-02 2004-04-02 FUEL SUPPLY RAMP PROTECTION DEVICE

Publications (2)

Publication Number Publication Date
EP1582736A1 EP1582736A1 (en) 2005-10-05
EP1582736B1 true EP1582736B1 (en) 2008-08-20

Family

ID=34878506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05300244A Not-in-force EP1582736B1 (en) 2004-04-02 2005-04-01 Safety guard for a fuel rail

Country Status (5)

Country Link
EP (1) EP1582736B1 (en)
AT (1) ATE405742T1 (en)
DE (1) DE602005009058D1 (en)
FR (1) FR2868474B1 (en)
PL (1) PL1582736T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8844500B2 (en) 2011-01-22 2014-09-30 Cummins Intellectual Property, Inc. Enclosure for high pressure fuel rail
US10220700B2 (en) 2015-02-09 2019-03-05 Toyota Motor Engineering & Manufacturing North America, Inc. Protection and support for vehicle engine components

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR3073568A1 (en) * 2017-11-14 2019-05-17 Psa Automobiles Sa ADMISSION DISTRIBUTOR PROVIDED WITH AN IMPACT DEVICE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168856A (en) * 1992-01-10 1992-12-08 Siemens Automotive L.P. Plastic fuel rail having integral guard wall for protecting an integral nipple or hose barb
JP3812403B2 (en) * 2001-10-19 2006-08-23 日産自動車株式会社 Intake device for internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8844500B2 (en) 2011-01-22 2014-09-30 Cummins Intellectual Property, Inc. Enclosure for high pressure fuel rail
US10220700B2 (en) 2015-02-09 2019-03-05 Toyota Motor Engineering & Manufacturing North America, Inc. Protection and support for vehicle engine components

Also Published As

Publication number Publication date
FR2868474A1 (en) 2005-10-07
DE602005009058D1 (en) 2008-10-02
PL1582736T3 (en) 2009-05-29
ATE405742T1 (en) 2008-09-15
EP1582736A1 (en) 2005-10-05
FR2868474B1 (en) 2006-05-26

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