EP3265667B1 - Protection cover for a fuel manifold with a built-in dipstick guide - Google Patents

Protection cover for a fuel manifold with a built-in dipstick guide Download PDF

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Publication number
EP3265667B1
EP3265667B1 EP16705563.1A EP16705563A EP3265667B1 EP 3265667 B1 EP3265667 B1 EP 3265667B1 EP 16705563 A EP16705563 A EP 16705563A EP 3265667 B1 EP3265667 B1 EP 3265667B1
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EP
European Patent Office
Prior art keywords
lower shell
protective cover
shell
engine
conical inlet
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EP16705563.1A
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German (de)
French (fr)
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EP3265667A1 (en
Inventor
Alain CARBON
Pascal MARCEAU
Franck VEILLER
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Renault SAS
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Renault SAS
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Publication of EP3265667A1 publication Critical patent/EP3265667A1/en
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    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements

Definitions

  • the present invention relates to a thermal motor fuel supply ramp protection cover.
  • the present invention relates more particularly to a gauge guide integrated into an engine cover.
  • the combustion or combustion engines are generally protected by covers which cover an upper part of said engine. Said covers can thus provide sealing protection for certain elements of said engine against impurities in the external environment or to prevent the external environment from the pollution generated by said engine.
  • a protective cover of said duct which partially covers said conduit.
  • Said cover comprises, for reasons of ease of assembly, for example a lower protection element and a substantially complementary upper protective element to be fixed to one another and to cover the fuel supply duct.
  • a gauge guide is disposed at a lateral end of the cover and is connected to an oil supply conduit which opens into an oil sump disposed in the low engine.
  • Said gauge guide may comprise a substantially conical inlet extended by a duct connected with the oil sump.
  • said conical inlet is fixed to the lower protection element by transverse fixing means.
  • Said fixing means may be screws driven into the lower protection element.
  • the upper and lower protection elements of the cover as well as the tapered inlet of the gauge guide are preferably made of plastic, which implies having a metal reinforcing piece arranged behind a wall of the element. lower protection, able to receive the fixing screws.
  • said guide-gauge is fixed against the lower protection element by two screws 31; said two screws are received behind the wall 18b of the lower element 16 of protection in a metal reinforcing piece.
  • Fixing the gauge guide is delicate and causes the use of several parts.
  • a disadvantage of said gauge guide is that the conical inlet is inserted into a housing fixed by the attachment downstream, which can cause significant congestion of the inlet guide gauge.
  • the publication US A1-20070261661 discloses an engine cover including an oil fill port. Said orifice is connected with an oil filling duct.
  • the publication US 6,167,855 B discloses a protective shell and an oil filler pipe.
  • a disadvantage is that the protective cover does not surround either a fuel supply ramp or the filling duct. Pollutions can thus spread on the engine elements disposed below said protective cover.
  • the object of the invention is to remedy these problems and one of the objects of the invention is a protective cover of a fuel supply ramp comprising an oil filling gauge guide.
  • the oil filling duct comprises a fixing means to the casing of the motor element, which ensures the fixing of said duct without the need for metal reinforcement.
  • Said feed duct is arranged inside the lower shell, which allows to collect pollution during the supply of oil in the lower shell.
  • the filling duct and the lower shell are in one piece from the molding to improve the rigidity of the entire filling duct and lower shell while reducing assembly operations.
  • a heat engine 11 may comprise a fuel supply ramp 12 or "common rail" in English for supplying fuel to the various cylinders (not shown) of the engine.
  • Said ramp is protected by a protective cover which comprises an upper shell 14 adapted to cover said ramp as well as other motor elements such as an injection pump 28, and a substantially complementary lower shell 16 to surround the lower parts of said ramp as well as said engine elements.
  • the upper shell 14 comprises a substantially flat plate extended at the sides and orthogonally by side walls 18a which have at their ends contact surfaces 20a.
  • the lower shell 16 substantially comprises side walls 18b and a bottom wall 19 which substantially envelop the entire fuel supply ramp and engine elements.
  • the bottom wall 19 of said lower shell is generally disposed above a motor housing (not shown).
  • the lower shell thus has a hollow shape to surround a lower portion of the fuel supply ramp as well as some engine elements disposed near said ramp. Said lower shell therefore comprises an interior facing said ramp.
  • the ends of the side walls 18b of the lower shell also have contact surfaces 20b substantially complementary to the contact surfaces 20a of the upper shell 14 to allow support on each other during assembly of the protective cover.
  • the upper 14 and lower 16 shells have bellows 21a, 21b vis-à-vis that are interlocked with each other by quick fastening systems 22.
  • the side walls 18b have lateral fixing holes 18c opposite fixing holes in a member (not shown) of the motor housing. According to figure 2 three fixing holes 18c make it possible to hold the lower shell 16 firmly against the motor housing.
  • a filling duct 17 is fixed against a wall 18 of the lower shell 16 by two fixing screws 31 which pass through said wall to be received on the opposite side in a reinforcing element which may be a simple metal plate (not shown).
  • the mounting of said conduit is not easy and involves a complex assembly operation.
  • the filling duct 17 is arranged inside the lower shell 16, that is to say that the side walls 18b of said lower shell 16 surround said supply duct.
  • the filling duct 17 comprises a substantially conical inlet 23 having at an upstream end 24 in the direction of filling of the oil flared edges 24 'and a narrowed section 25' at the opposite end downstream 25.
  • the upstream end 24 is extended by a fixing lug 26 which extends substantially radially from the flared edges and which has a fixing orifice 27 at the opposite free end.
  • the fixing orifice is then placed opposite a fixing hole in a metal wall of a housing of an engine element.
  • said motor element may be a high-pressure injection pump 28. Fixing the filling duct to a metal casing therefore does not require a reinforcing piece.
  • downstream end 25 of the conical inlet 23 is driven into a substantially cylindrical transfer conduit 27 which passes through the lower wall 19 of the lower shell 16.
  • the downstream end 25 of the conical inlet is integral with the transfer conduit 27.
  • the transfer conduit 27 and the lower shell 16 are a single piece of plastic from the molding.
  • the plastic is, for example, polypropylene reinforced with glass fibers such as PP-GF30.
  • the upper and lower shells are of the same material.
  • Said transfer duct may be hollowed out in a side wall 18b of the lower shell 16. Said transfer duct thus opens from the bottom wall 19 by a connecting piece 29 adapted to receive an oil supply tube 32 which leads to the oil to the oil sump (not shown) at the bottom of the engine.
  • the lower shell 16 is arranged to cover the lower part of the feed ramp and is then fixed by fixing screws passing through the lateral attachment holes 18c to the motor housing.
  • the upper shell 14 has an orifice 30 passing through the upper plate and opening into the conical inlet 23 of the filling duct.
  • said orifice 30 is extended by lips (no shown) which are received in the flared edges of the conical inlet 23. Said lips may be of polyurethane.
  • the engine is then mounted in the engine compartment of the vehicle.
  • the upper shell is finally assembled to the lower shell to form the protective cover of the ramp.
  • the objective of the invention is realized.
  • the protective cover includes an oil fill line which is simply and reliably attached to a metal housing of an engine element.
  • the invention is not limited to the embodiments of this plug, described above as examples, it encompasses all variants.
  • the conical inlet 23 and the lower shell 16 with the transfer duct 27 are made of a single plastic part obtained by molding to facilitate the assembly of the lower shell 16.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention concerne un cache de protection de rampe d'alimentation en carburant de moteur thermique.The present invention relates to a thermal motor fuel supply ramp protection cover.

La présente invention concerne plus particulièrement un guide jauge intégré dans un cache de moteur.The present invention relates more particularly to a gauge guide integrated into an engine cover.

Etat de la techniqueState of the art

Les moteurs thermiques ou à combustion sont protégés généralement par des caches qui recouvrent une partie supérieure dudit moteur. Lesdits caches peuvent ainsi assurer une protection d'étanchéité de certains éléments dudit moteur contre des impuretés de l'environnement extérieur ou de prévenir l'environnement extérieur des pollutions générées par ledit moteur.The combustion or combustion engines are generally protected by covers which cover an upper part of said engine. Said covers can thus provide sealing protection for certain elements of said engine against impurities in the external environment or to prevent the external environment from the pollution generated by said engine.

Pour les moteurs thermiques comprenant un conduit d'amenée de carburant ou une rampe commune pour une injection directe de carburant plus connue sous le nom de « Common Rail » en anglais, il est connu de disposer un cache de protection dudit conduit qui recouvre en partie ledit conduit. Ledit cache comprend pour des raisons de facilité de montage par exemple un élément de protection inférieur et un élément de protection supérieur sensiblement complémentaire pour être fixés l'un à l'autre et recouvrir le conduit d'amenée de carburant.For thermal engines comprising a fuel supply duct or a common rail for a direct fuel injection better known under the name of "Common Rail" in English, it is known to have a protective cover of said duct which partially covers said conduit. Said cover comprises, for reasons of ease of assembly, for example a lower protection element and a substantially complementary upper protective element to be fixed to one another and to cover the fuel supply duct.

De façon connue, un guide-jauge est disposé à une extrémité latérale du cache et il est connecté à un conduit d'alimentation d'huile qui débouche dans un carter d'huile disposé dans le bas moteur. Ledit guide-jauge peut comprendre une entrée sensiblement conique prolongée par un conduit connecté avec le carter d'huile. De manière connue ladite entrée conique est fixée à l'élément de protection inférieur par des moyens de fixation transversale. Lesdits moyens de fixation peuvent être des vis enfoncées dans l'élément de protection inférieur.In known manner, a gauge guide is disposed at a lateral end of the cover and is connected to an oil supply conduit which opens into an oil sump disposed in the low engine. Said gauge guide may comprise a substantially conical inlet extended by a duct connected with the oil sump. In known manner said conical inlet is fixed to the lower protection element by transverse fixing means. Said fixing means may be screws driven into the lower protection element.

Pour réduire le poids, les éléments de protection supérieur et inférieur du cache ainsi que l'entrée conique du guide-jauge sont de manière préférentielle en plastique, ce qui implique d'avoir une pièce métallique de renfort disposée derrière une paroi de l'élément de protection inférieur, apte à recevoir les vis de fixation.To reduce the weight, the upper and lower protection elements of the cover as well as the tapered inlet of the gauge guide are preferably made of plastic, which implies having a metal reinforcing piece arranged behind a wall of the element. lower protection, able to receive the fixing screws.

Ainsi selon la figure 1 représentant un guide-jauge fixé à un cache de protection, ledit guide-jauge est fixé contre l'élément de protection inférieur par deux vis 31 ; lesdites deux vis sont reçues derrière la paroi 18b de l'élément inférieur 16 de protection dans une pièce métallique de renfort. La fixation du guide-jauge est donc délicate et entraine l'utilisation de plusieurs pièces.So according to the figure 1 representing a gauge-guide fixed to a protective cover, said guide-gauge is fixed against the lower protection element by two screws 31; said two screws are received behind the wall 18b of the lower element 16 of protection in a metal reinforcing piece. Fixing the gauge guide is delicate and causes the use of several parts.

La publication US-A1-4155167 divulgue un guide-jauge de remplissage d'huile comprenant une entrée conique et une fixation dudit guide-jauge en aval de l'entrée conique selon le sens d'écoulement de l'huile.The publication US-A1-4155167 discloses an oil fill gauge guide comprising a conical inlet and an attachment of said gauge guide downstream of the conical inlet in the direction of flow of the oil.

Un inconvénient dudit guide-jauge est que l'entrée conique est insérée dans un carter fixé par la fixation en aval, ce qui peut entrainer un encombrement important de l'entrée du guide-jauge.A disadvantage of said gauge guide is that the conical inlet is inserted into a housing fixed by the attachment downstream, which can cause significant congestion of the inlet guide gauge.

La publication US-A1-20070261661 divulgue un cache de moteur comprenant un orifice de remplissage d'huile. Ledit orifice est connecté avec un conduit de remplissage d'huile. La publication US 6 167 855 B divulgue une coquille de protection et un conduit de remplissage d'huile.The publication US A1-20070261661 discloses an engine cover including an oil fill port. Said orifice is connected with an oil filling duct. The publication US 6,167,855 B discloses a protective shell and an oil filler pipe.

Un inconvénient est que le cache de protection n'entoure ni une rampe d'alimentation de carburant ni le conduit de remplissage. Des pollutions peuvent ainsi se répandre sur les éléments du moteur disposés en dessous dudit cache de protection.A disadvantage is that the protective cover does not surround either a fuel supply ramp or the filling duct. Pollutions can thus spread on the engine elements disposed below said protective cover.

Bref résumé de l'inventionBrief summary of the invention

Le but de l'invention est de remédier à ces problèmes et un des objets de l'invention est un cache de protection d'une rampe d'alimentation de carburant comprenant un guide-jauge de remplissage d'huile.The object of the invention is to remedy these problems and one of the objects of the invention is a protective cover of a fuel supply ramp comprising an oil filling gauge guide.

La présente invention concerne plus particulièrement un cache de protection de rampe d'alimentation de moteur thermique comprenant :

  • une coquille de protection supérieure couvrant ladite rampe d'alimentation,
  • une coquille de protection inférieure complémentaire pour entourer ladite rampe,
  • un guide jauge avec un conduit de remplissage d'huile connecté à la coquille inférieure,
caractérisé en ce que ledit conduit de remplissage d'huile est solidaire de la coquille inférieure, entouré par des parois latérales de la coquille inférieure et comprend un moyen de fixation à une extrémité amont à un carter d'un élément du moteur.The present invention more particularly relates to a thermal motor feed ramp protection cover comprising:
  • an upper protective shell covering said feed ramp,
  • a complementary lower protective shell for surrounding said ramp,
  • a gauge guide with an oil filler pipe connected to the lower shell,
characterized in that said oil filling duct is integral with the lower shell, surrounded by side walls of the lower shell and comprises a fastening means at an upstream end to a housing of an engine element.

De manière avantageuse, le conduit de remplissage d'huile comprend un moyen de fixation au carter de l'élément du moteur, ce qui assure la fixation dudit conduit sans nécessité de renfort métallique. Ledit conduit d'alimentation est agencé à l'intérieur de la coquille inférieure, ce qui permet de recueillir des pollutions lors de l'alimentation en huile dans la coquille inférieure.Advantageously, the oil filling duct comprises a fixing means to the casing of the motor element, which ensures the fixing of said duct without the need for metal reinforcement. Said feed duct is arranged inside the lower shell, which allows to collect pollution during the supply of oil in the lower shell.

Le conduit de remplissage est solidaire de la coquille inférieure et comprend un moyen de fixation à un carter d'un élément de moteur. Il est donc maintenu en deux points de façon simple. De plus le conduit de remplissage permet l'accrochage de ladite coquille inférieure au carter d'élément de moteur pour fiabiliser la fixation de ladite coquille.

  • le conduit de remplissage comporte une entrée conique comportant des bords évasés à l'extrémité amont.
The filling duct is integral with the lower shell and comprises means for fixing to a housing of a motor element. It is therefore maintained in two points in a simple way. In addition, the filling duct makes it possible to hook said lower shell to the engine element casing in order to make the fastening of said shell more reliable.
  • the filling duct has a conical inlet having flared edges at the upstream end.

De manière avantageuse, le conduit de remplissage comporte une entrée conique comportant des bords évasés à une extrémité amont dudit conduit selon le sens de circulation et de remplissage de l'huile afin de collecter de façon optimale l'huile versée lors du remplissage.

  • l'extrémité amont de l'entrée conique est prolongée par une patte de fixation avec le carter d'élément de moteur.
Advantageously, the filling duct comprises a conical inlet having flared edges at an upstream end of said duct in the direction of flow and filling of the oil in order to optimally collect the oil poured during filling.
  • the upstream end of the conical inlet is extended by a bracket with the motor element housing.

De manière avantageuse, l'extrémité amont de l'entrée conique est prolongée par une patte de fixation qui vient en contact avec le carter de l'élément de moteur. Un moyen de fixation permet alors la fixation de ladite patte de fixation et de l'entrée conique du conduit de remplissage audit élément du moteur. Le carter dudit élément du moteur étant de préférence en acier, il n'est donc pas nécessaire de recourir à des renforts de fixation.

  • la coquille supérieure comporte un orifice débouchant entouré par les bords amont évasés de l'entrée conique du conduit de remplissage.
Advantageously, the upstream end of the conical inlet is extended by a fixing lug which comes into contact with the casing of the element. engine. Fixing means then allows the fixing of said fixing lug and the conical inlet of the filling duct to said motor element. Since the casing of said motor element is preferably made of steel, it is therefore not necessary to use fixing reinforcements.
  • the upper shell has an opening opening surrounded by the flared upstream edges of the conical inlet of the filling duct.

De manière avantageuse, la coquille supérieure comporte un orifice débouchant et entouré par les bords évasés de l'entrée conique. De dette façon, l'huile de remplissage passe de façon optimale dans le conduit de remplissage. De plus, l'entrée conique n'est pas solidaire de la coquille supérieure, ce qui permet une manipulation facile de ladite coquille supérieure lors d'opérations techniques sur un élément de moteur disposé en dessous de ladite coquille supérieure.

  • l'entrée conique du conduit de remplissage comporte une extrémité aval débouchant dans un conduit de transfert solidaire de la coquille inférieure et qui traverse ladite coquille inférieure.
Advantageously, the upper shell has an opening opening and surrounded by the flared edges of the conical inlet. Debt way, the filling oil passes optimally into the filling duct. In addition, the conical inlet is not secured to the upper shell, which allows easy handling of said upper shell during technical operations on a motor element disposed below said upper shell.
  • the conical inlet of the filling duct comprises a downstream end opening into a transfer duct integral with the lower shell and which passes through said lower shell.

De manière préférentielle, l'entrée conique comporte une extrémité aval débouchant dans un conduit de transfert qui traverse la coquille inférieure pour amener l'huile de remplissage dans un carter d'huile disposé en bas du moteur, ledit conduit de transfert étant solidaire de ladite coquille inférieure pour assurer un maintien du conduit de remplissage.

  • le conduit de transfert et la coquille inférieure sont d'une seule pièce issue du moulage.
Preferably, the conical inlet comprises a downstream end opening into a transfer duct which passes through the lower shell to bring the filling oil into an oil sump disposed at the bottom of the engine, said transfer duct being integral with said lower shell to maintain the filling duct.
  • the transfer duct and the lower shell are integrally formed from the molding.

De manière optimale, le conduit de transfert et la coquille inférieure sont d'une seule pièce issue du moulage pour diminuer les opérations de montage.

  • le conduit de remplissage et la coquille inférieure sont d'une seule pièce issue du moulage.
Optimally, the transfer conduit and the lower shell are integrally molded to reduce mounting operations.
  • the filling duct and the lower shell are in one piece from the molding.

De manière préférentielle, le conduit de remplissage et la coquille inférieure sont d'une seule pièce issue du moulage pour améliorer la rigidité de l'ensemble conduit de remplissage et coquille inférieure tout en diminuant les opérations de montage.Preferably, the filling duct and the lower shell are in one piece from the molding to improve the rigidity of the entire filling duct and lower shell while reducing assembly operations.

Brève description des figuresBrief description of the figures

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui suit de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés sur les dessins annexés, dans lesquels :

  • la figure 1 est une vue schématique d'un cache de protection de rampe d'alimentation de carburant de moteur thermique de l'art antérieur.
  • la figure 2 est une vue schématique du cache de protection de rampe d'alimentation de carburant de moteur selon l'invention.
  • la figure 3 est une vue schématique de coupe du cache de protection.
  • la figure 4 est une vue schématique du cache de protection de rampe d'alimentation de carburant de moteur selon l'invention
  • la figure 5 est une vue schématique de la coquille inférieure.
  • la figure 6 est une vue schématique de la coquille supérieure.
Other features and advantages of the invention will appear on reading the following description of particular embodiments of the invention given as non-limiting examples and shown in the accompanying drawings, in which:
  • the figure 1 is a schematic view of a heat engine fuel supply ramp protection cover of the prior art.
  • the figure 2 is a schematic view of the motor fuel feed ramp protection cover according to the invention.
  • the figure 3 is a schematic sectional view of the protective cover.
  • the figure 4 is a schematic view of the engine fuel supply ramp protection cover according to the invention
  • the figure 5 is a schematic view of the lower shell.
  • the figure 6 is a schematic view of the upper shell.

Description détaillée des figuresDetailed description of the figures

Dans la description qui va suivre, des chiffres de référence identiques désignent des pièces identiques ou ayant des fonctions similaires.In the following description, like reference numerals designate like parts or having similar functions.

Tel que représenté dans la figure 1, selon l'état de l'art, un moteur thermique 11 peut comprendre une rampe d'alimentation en carburant 12 ou « common rail » en anglais destinée à amener du carburant vers les différents cylindres (non représentés) du moteur. Ladite rampe est protégée par un cache de protection qui comprend une coquille supérieure 14 apte à recouvrir la dite rampe ainsi que d"autres éléments du moteur comme une pompe à injection 28, et une coquille inférieure 16 sensiblement complémentaire pour entourer les parties inférieures de ladite rampe ainsi que desdits éléments du moteur.As shown in the figure 1 , according to the state of the art, a heat engine 11 may comprise a fuel supply ramp 12 or "common rail" in English for supplying fuel to the various cylinders (not shown) of the engine. Said ramp is protected by a protective cover which comprises an upper shell 14 adapted to cover said ramp as well as other motor elements such as an injection pump 28, and a substantially complementary lower shell 16 to surround the lower parts of said ramp as well as said engine elements.

La coquille supérieure 14 comporte une plaque sensiblement plane prolongée sur les côtés et de façon orthogonale par des parois latérales 18a qui présentent à leurs extrémités des surfaces de contact 20a.The upper shell 14 comprises a substantially flat plate extended at the sides and orthogonally by side walls 18a which have at their ends contact surfaces 20a.

La coquille inférieure 16 comprend sensiblement des parois latérales 18b et une paroi inférieure 19 qui enveloppent sensiblement l'ensemble de la rampe d'alimentation de carburant et d'éléments de moteur. La paroi inférieure 19 de ladite coquille inférieure est généralement disposée au-dessus d'un carter de moteur (non représenté). La coquille inférieure présente donc une forme creuse pour entourer une partie basse de la rampe d'alimentation en carburant ainsi que de certains éléments du moteur disposés à proximité de ladite rampe. Ladite coquille inférieure comprend donc un intérieur tourné vers ladite rampe. Les extrémités des parois latérales 18b de la coquille inférieure présentent également des surfaces de contact 20b sensiblement complémentaires aux surfaces de contact 20a de la coquille supérieure 14 pour permettre un appui des unes sur les autres lors de l'assemblage du cache de protection. Pour ce faire, les coquilles supérieure 14 et inférieure 16 comportent des boursoufflures 21a, 21b en vis-à-vis qui sont prises en tenailles les unes avec les autres par des systèmes de fixation rapide 22.The lower shell 16 substantially comprises side walls 18b and a bottom wall 19 which substantially envelop the entire fuel supply ramp and engine elements. The bottom wall 19 of said lower shell is generally disposed above a motor housing (not shown). The lower shell thus has a hollow shape to surround a lower portion of the fuel supply ramp as well as some engine elements disposed near said ramp. Said lower shell therefore comprises an interior facing said ramp. The ends of the side walls 18b of the lower shell also have contact surfaces 20b substantially complementary to the contact surfaces 20a of the upper shell 14 to allow support on each other during assembly of the protective cover. To do this, the upper 14 and lower 16 shells have bellows 21a, 21b vis-à-vis that are interlocked with each other by quick fastening systems 22.

Les parois latérales 18b comportent des orifices de fixation 18c latérale en regard avec des trous de fixation dans un élément (non représenté) du carter du moteur. Selon la figure 2, trois orifices de fixation 18c permettent le maintien solidaire de la coquille inférieure 16 contre le carter du moteur.The side walls 18b have lateral fixing holes 18c opposite fixing holes in a member (not shown) of the motor housing. According to figure 2 three fixing holes 18c make it possible to hold the lower shell 16 firmly against the motor housing.

Un conduit de remplissage 17 est fixé contre une paroi 18 de la coquille inférieure 16 par deux vis de fixation 31 qui traversent ladite paroi pour être reçues du côté opposé dans un élément de renfort qui peut être une simple plaque métallique (non représenté). Le montage dudit conduit n'est donc pas aisé et implique une opération de montage complexe.A filling duct 17 is fixed against a wall 18 of the lower shell 16 by two fixing screws 31 which pass through said wall to be received on the opposite side in a reinforcing element which may be a simple metal plate (not shown). The mounting of said conduit is not easy and involves a complex assembly operation.

Selon l'invention et représenté dans la figure 2, le conduit de remplissage 17 est agencé à l'intérieur de la coquille inférieure 16 c'est-à-dire que les parois latérales 18b de ladite coquille inférieure 16 entourent ledit conduit d'alimentation.According to the invention and represented in the figure 2 , the filling duct 17 is arranged inside the lower shell 16, that is to say that the side walls 18b of said lower shell 16 surround said supply duct.

Selon les figures 4 et 5, le conduit de remplissage 17 comprend une entrée sensiblement conique 23 présentant à une extrémité amont 24 selon le sens de remplissage de l'huile des bords évasés 24' et une section rétrécie 25' à l'extrémité opposée en aval 25.According to figures 4 and 5 , the filling duct 17 comprises a substantially conical inlet 23 having at an upstream end 24 in the direction of filling of the oil flared edges 24 'and a narrowed section 25' at the opposite end downstream 25.

L'extrémité amont 24 est prolongée par une patte de fixation 26 qui s'étend sensiblement radialement depuis les bords évasés et qui comporte un orifice de fixation 27 à l'extrémité libre opposée. L'orifice de fixation est disposé alors en regard d'un trou de fixation dans une paroi métallique d'un carter d'un élément du moteur. Par exemple, ledit élément du moteur peut être une pompe à injection à haute pression 28. La fixation du conduit de remplissage à un carter métallique ne nécessite donc pas de pièce de renfort.The upstream end 24 is extended by a fixing lug 26 which extends substantially radially from the flared edges and which has a fixing orifice 27 at the opposite free end. The fixing orifice is then placed opposite a fixing hole in a metal wall of a housing of an engine element. For example, said motor element may be a high-pressure injection pump 28. Fixing the filling duct to a metal casing therefore does not require a reinforcing piece.

Selon un mode de réalisation, l'extrémité aval 25 de l'entrée conique 23 est enfoncée dans un conduit de transfert 27 sensiblement cylindrique qui traverse la paroi inférieure 19 de la coquille inférieure 16. De manière préférentielle, l'extrémité aval 25 de l'entrée conique est solidaire du conduit de transfert 27.According to one embodiment, the downstream end 25 of the conical inlet 23 is driven into a substantially cylindrical transfer conduit 27 which passes through the lower wall 19 of the lower shell 16. Preferably, the downstream end 25 of the conical inlet is integral with the transfer conduit 27.

De manière préférentielle, le conduit de transfert 27 et la coquille inférieure 16 sont d'une seule pièce en plastique issue du moulage. Le plastique est par exemple du polypropylène renforcé avec des fibres de verre tel que le PP-GF30. De manière préférentielle, les coquilles supérieures et inférieures sont du même matériau. Ledit conduit de transfert peut être creusé dans une paroi latérale 18b de la coquille inférieure 16. Ledit conduit de transfert débouche donc de la paroi inférieure 19 par un embout de connexion 29 adapté à recevoir un tube d'alimentation d'huile 32 qui conduit l'huile jusqu'au carter d'huile (non représenté) en bas du moteur.Preferably, the transfer conduit 27 and the lower shell 16 are a single piece of plastic from the molding. The plastic is, for example, polypropylene reinforced with glass fibers such as PP-GF30. Preferably, the upper and lower shells are of the same material. Said transfer duct may be hollowed out in a side wall 18b of the lower shell 16. Said transfer duct thus opens from the bottom wall 19 by a connecting piece 29 adapted to receive an oil supply tube 32 which leads to the oil to the oil sump (not shown) at the bottom of the engine.

Ainsi la coquille inférieure 16 est disposée pour recouvrir la partie basse de la rampe d'alimentation et elle est ensuite fixée par des vis de fixation traversant les orifices de fixation latérales 18c au carter du moteur.Thus the lower shell 16 is arranged to cover the lower part of the feed ramp and is then fixed by fixing screws passing through the lateral attachment holes 18c to the motor housing.

La coquille supérieure 14 comporte un orifice 30 traversant la plaque supérieure et débouchant dans l'entrée conique 23 du conduit de remplissage. De manière préférentielle, ledit orifice 30 est prolongé par des lèvres (non représentées) qui sont reçues dans les bords évasés de l'entrée conique 23. Lesdites lèvres peuvent être en polyuréthane.The upper shell 14 has an orifice 30 passing through the upper plate and opening into the conical inlet 23 of the filling duct. Preferably, said orifice 30 is extended by lips (no shown) which are received in the flared edges of the conical inlet 23. Said lips may be of polyurethane.

Ledit moteur est alors monté dans le compartiment moteur du véhicule. La coquille supérieure est enfin assemblée à la coquille inférieure pour former le cache de protection de la rampe.The engine is then mounted in the engine compartment of the vehicle. The upper shell is finally assembled to the lower shell to form the protective cover of the ramp.

L'objectif de l'invention est réalisé. Le cache de protection comprend un conduit de remplissage d'huile qui est fixé de façon simple et fiable à un carter métallique d'un élément du moteur.The objective of the invention is realized. The protective cover includes an oil fill line which is simply and reliably attached to a metal housing of an engine element.

Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de cette prise, décrites ci-dessus à titre d'exemples, elle en embrasse au contraire toutes les variantes. C'est ainsi notamment que l'entrée conique 23 et la coquille inférieure 16 avec le conduit de transfert 27 sont d'une seule pièce en plastique obtenue par moulage pour faciliter le montage de la coquille inférieure 16.As goes without saying, the invention is not limited to the embodiments of this plug, described above as examples, it encompasses all variants. Thus, in particular, the conical inlet 23 and the lower shell 16 with the transfer duct 27 are made of a single plastic part obtained by molding to facilitate the assembly of the lower shell 16.

Claims (8)

  1. Protective cover (10) for a combustion engine fuel rail (12) comprising:
    - an upper protective shell (14) covering the said fuel rail,
    - a complementary lower protective shell (16) to surround the said rail,
    - an oil filler pipe (17) connected to the lower shell,
    characterized in that the said oil filler pipe (17) is surrounded by lateral walls of the lower shell (16) and comprises at an upstream end a fixing means (26) for attachment to a case of an element of the engine.
  2. Protective cover according to Claim 1, characterized in that the filler pipe (17) is secured to the lower shell (16).
  3. Protective cover according to either one of Claims 1 and 2, characterized in that the filler pipe (17) comprises a conical inlet (23) comprising edges that are flared at the upstream end.
  4. Protective cover according to Claim 3, characterized in that the upstream end (24) of the conical inlet (23) is extended by a fixing lug (26) for fixing to the case element of the engine.
  5. Protective cover according to either one of Claims 3 and 4, characterized in that the upper shell (14) comprises an open-ended orifice (30) surrounded by the flared upstream edges (24') of the conical inlet (23) of the filler pipe.
  6. Protective cover according to any one of Claims 3 to 5, characterized in that the conical inlet (23) of the filler pipe (17) comprises a downstream end (25) opening into a transfer pipe (27) which passes through the lower shell (16).
  7. Protective cover according to Claim 6, characterized in that the transfer pipe (27) and the lower shell (16) are made as a single moulding.
  8. Protective cover according to any one of Claims 1 to 7, characterized in that the filler pipe (17) and the lower shell (16) are made as a single moulding.
EP16705563.1A 2015-03-04 2016-01-19 Protection cover for a fuel manifold with a built-in dipstick guide Active EP3265667B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1551817A FR3033368B1 (en) 2015-03-04 2015-03-04 FUEL SUPPLY RAMP PROTECTION COVER WITH INTEGRATED GUIDE-GAUGE
PCT/FR2016/050089 WO2016139396A1 (en) 2015-03-04 2016-01-19 Protection cover for a fuel manifold with a built-in dipstick guide

Publications (2)

Publication Number Publication Date
EP3265667A1 EP3265667A1 (en) 2018-01-10
EP3265667B1 true EP3265667B1 (en) 2019-04-17

Family

ID=53404693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16705563.1A Active EP3265667B1 (en) 2015-03-04 2016-01-19 Protection cover for a fuel manifold with a built-in dipstick guide

Country Status (3)

Country Link
EP (1) EP3265667B1 (en)
FR (1) FR3033368B1 (en)
WO (1) WO2016139396A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155167A (en) 1978-06-22 1979-05-22 Delano Arthur Dipstick guide
US6167855B1 (en) * 1998-06-12 2001-01-02 Siemens Canada Limited Integrated air-fuel module and assembly method
US6095105A (en) * 1999-03-01 2000-08-01 Ford Global Technologies, Inc. Plenum/runner module having integrated engine valve cover
US7389760B2 (en) 2006-05-10 2008-06-24 Ford Global Technologies, Llc Modular engine cover
AP3644A (en) * 2007-12-28 2016-03-16 Tata Motors Ltd A novel integrated bed plate structure for two cylinder direct injection high pressure common rail four stroke reciprocating piston internal combustion diesel engine
US8307809B2 (en) * 2009-09-29 2012-11-13 GM Global Technology Operations LLC Engine assembly including cam cover mounted fuel rail

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR3033368B1 (en) 2018-06-29
EP3265667A1 (en) 2018-01-10
WO2016139396A1 (en) 2016-09-09
FR3033368A1 (en) 2016-09-09

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