EP3232028B1 - Optimised arrangement of exhaust manifold with dovetail attachment - Google Patents

Optimised arrangement of exhaust manifold with dovetail attachment Download PDF

Info

Publication number
EP3232028B1
EP3232028B1 EP17158614.2A EP17158614A EP3232028B1 EP 3232028 B1 EP3232028 B1 EP 3232028B1 EP 17158614 A EP17158614 A EP 17158614A EP 3232028 B1 EP3232028 B1 EP 3232028B1
Authority
EP
European Patent Office
Prior art keywords
wall
cylinder head
attachment
bearing
arrangement according
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.)
Active
Application number
EP17158614.2A
Other languages
German (de)
French (fr)
Other versions
EP3232028A1 (en
Inventor
Eric Dumas
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
Publication of EP3232028A1 publication Critical patent/EP3232028A1/en
Application granted granted Critical
Publication of EP3232028B1 publication Critical patent/EP3232028B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1833—Construction facilitating manufacture, assembly, or disassembly specially adapted for small internal combustion engines, e.g. used in model applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/18—Exhaust treating devices having provisions not otherwise provided for for improving rigidity, e.g. by wings, ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like

Definitions

  • the present invention relates to a motor vehicle engine exhaust gas collection system.
  • the present invention relates more particularly to a system for fixing an exhaust manifold against a wall of a cylinder head and crankcase.
  • the present invention relates to a motor vehicle engine.
  • the motor engines of motor vehicles comprise an exhaust manifold connected in known manner to a cylinder head at the top of said engine.
  • the purpose of the exhaust manifold is to recover exhaust gases resulting from the combustion of air and fuel mixture in cylinders upstream in the direction of circulation of the gases.
  • the manifold is generally fixed by flanges and bolts against the wall of the cylinder head in a very rigid manner.
  • the different parts of the cylinder head and collector undergo variable heating causing significant temperature differences. Sealing problems therefore appear between the various parts in contact due to distortions, consequences of this rigid attachment and the resulting expansion stresses.
  • the engines have a smaller footprint due to a reduced engine compartment space and constraints of architecture and aesthetics of the vehicle, the exhaust manifold is arranged in locations smaller and smaller which does not facilitate the attachment of the collector against the wall of the cylinder head, especially during temperature rises of said collector.
  • the publication US5918912 thus discloses a means for attaching an exhaust manifold against a wall of the engine cylinder head.
  • Said cylinder wall has connecting surfaces and the manifold comprises at a connecting end upper flanges and lower flanges.
  • Said lower flanges are clamped in the connecting surfaces and the upper flanges are held against the wall of said cylinder head by clamping straps.
  • Such a combination of the cylinder head and the collector can cause problems at high temperatures, especially for an aluminum cylinder head and a steel or cast iron collector because of the very large differences in thermal expansion between the two materials. A game can be created and the seal between the collector and the cylinder head is no longer assured. In addition, the surfaces of bolt connection require additional machining, which generates an additional manufacturing step and cost.
  • the publication FR-A1-2897101 discloses a system for attaching an exhaust manifold against a cylinder wall of a heat engine.
  • the manifold includes at a connection end with the yoke a fastener having beveled connection surfaces.
  • the fixing system consists of two bars resting on the bevel connection surfaces and fixed against the cylinder wall.
  • a disadvantage is that the differential expansion of the cylinder head and the collector can cause an uplift of the upper bar then causing a leak of the system.
  • the upper bar is that the bar does not have deformation zones to accompany the differential expansions between the collector and the cylinder head.
  • the publication US-A1-2005 / 0268602 discloses a device for fixing an exhaust gas manifold against an engine cylinder head, said manifold having a fixed lower flange secured to the cylinder head and a diametrically opposed upper flange and clamped between the cylinder head and a fixing bar; the upper flange or the fixing bar having an elastic portion.
  • a disadvantage is the existence of clearance between the fixing bar and the upper flange which can cause a sealing defect.
  • the object of the invention is to remedy these problems and one of the objects of the invention is a device for fixing an exhaust gas manifold against an engine cylinder head wall and crankcase, allowing congestion reduced engine.
  • the invention relates more particularly to an exhaust manifold arrangement of an internal combustion engine according to claim 1.
  • the manifold arrangement comprises a cylinder head fixed above a crankcase, in addition said collector comprises an upstream end neck in the extension of a gas outlet of the cylinder head, and surrounded by a fixing device having a lower fixing end having a first wall fixed in abutment against a wall of the cylinder head and a second wall bearing against the crankcase.
  • the exhaust manifold has a lower end fixed against a support wall of the cylinder head and in abutment against the crankcase, which reduces the bulk of the attachment of the manifold and therefore the engine.
  • the fixing device is connected to several gas outlets of the cylinder head, which optimally arranges the exhaust manifolds and reduce the size of the engine.
  • the term horizontal orientation refers to a horizontal plane of the joint plane of the cylinder head vis-à-vis the horizontal joint plane of the crankcase and the vertical term is along an axis orthogonal to said joint planes with a downward direction from the crankcase upwards to the cylinder head.
  • an exhaust manifold 11 is attached to a wall 12 of a cylinder head 14 of a motor vehicle engine (not shown) for collecting exhaust gases from combustion in the engine cylinders.
  • the collector is thus connected at least to an exhaust gas outlet 13.
  • exhaust gas manifold is connected to a single gas outlet to facilitate understanding but it goes without saying that said manifold may comprise for example several branches each connected to an exhaust gas outlet of the cylinder head according to the embodiment described below.
  • exhaust manifold means a processing element of the exhaust line of the engine.
  • said manifold is a catalytic converter attached to a gas outlet of the cylinder head.
  • the exhaust gas is then directed for example to a turbine of a turbocharger (not shown).
  • the yoke 14 has a horizontal joint plane 16 facing a joint plane 17 of the crankcase 15. Between said two planes is arranged in a known manner a cylinder head gasket 41.
  • the crankcase comprises at least one fastening bracket 18, which extends laterally from the side edge 19 of the crankcase.
  • Said bracket thus comprises a receiving wall 20 in the extension of the joint plane 17 of the crankcase, carried by a retaining rib 21 extending against a vertical wall of the crankcase along an axis perpendicular to said wall of the crankcase. home 20.
  • the crankcase has a sidewalk 40 thus having a receiving wall 20, extending laterally from the joint plane 17 of the crankcase.
  • Said sidewalk may also be carried by at least one retaining rib extending against the wall of the cylinder block along an axis substantially orthogonal to the joint plane.
  • the collector 11 is fixed to a wall 12 of yoke 14 on a substantially oblique flat surface 22 with respect to the vertical axis.
  • Said wall 22 thus extends obliquely from the joint plane 16 of the cylinder head towards the outside of the engine as shown in FIG. figure 2 .
  • Said wall 22 forms with the joint plane 16 of the cylinder head an angle of inclination ⁇ between 30 and 80 °, said angle of inclination being defined in the counterclockwise direction from the extension of the joint plane 16 of the cylinder head or from the housing wall 20 of the cylinder block, towards the oblique wall 22 of the cylinder head.
  • said angle of inclination is 45 °.
  • the manifold 11 comprises an upstream end neck 23 in the direction of flow of the exhaust gas surrounded by a fixing device 10.
  • Said device is for example a fastening flange 24 having a passage opening in which is recessed the end collar of the collector.
  • the fastening device 10 has a lower end 25 and an opposite upper end 26, each of said two ends has a bevel profile.
  • the lower end 25 of said device thus comprises a first support wall 27 pressed against the oblique wall 22 of the cylinder head and a second wall 28 bearing on the cylinder block and more specifically on the housing wall 20 of the housing. cylinders.
  • the angle of separation between the two walls 27, 28 of the lower end 25 is therefore acute substantially equal to the angle of inclination ⁇ of the oblique wall 22 of the cylinder head.
  • the upper end 26 of the fastening device comprises the bearing wall 27 pressed against the oblique wall 22 of the yoke and a second wall 29 for receiving a head of a fastening element 30 in abutment.
  • Said fastening element 30 may be a fastening stud which is pressed into a hole in the wall of the cylinder head through an orifice in the upper end 26 of the fastener 10. The head of the fastener thus presses on the second wall 29 of the upper end.
  • the first and second walls 27, 29 of the upper end 26 form between them a spacing angle ⁇ substantially complementary to the spacing angle ⁇ between the two walls 27, 28 of the lower end 25.
  • two identical fixing elements are arranged in the upper end and preferably symmetrically with respect to a median vertical plane BB of the device passing through the center of the opening 32 for the passage of the exhaust gases.
  • a manifold gasket 33 also surrounding the passage opening 32 of the gas.
  • said manifold gasket 33 is substantially plate-shaped and has at the bottom part at least one sheet 34 extending along the lateral side of the cylinder block, said sheet being adapted to preferentially cover the surface of the wall of the cylinder; home 20 of the crankcase. Said sheet 34 may also cover the second wall 28 of the lower end 25 of the fixing device.
  • the cylinder head gasket 41 is extended laterally to cover the surface of the housing wall 20 of the crankcase 15.
  • the collector gasket 33 stops in part. low at the lower end 42 of the yoke 14.
  • the fixing device 10 is secured to the collector 11 by welding between the neck of the collector and the edges of the passage opening of the fastener.
  • the fixing device 10 is part of the collector.
  • the passage of gases at a very high temperature causes a very significant heating of the collar of the collector 11 and the fixing device.
  • the heat is therefore spread substantially radially with respect to the axis X of gas flow.
  • the lower end 25 of the fixing device is locked against the oblique wall 22 of the cylinder head and the accommodating wall 28 of the crankcase.
  • the upper end 26 is then likely to deform in a substantially radial temperature gradient relative to the axis X of gas flow. Said upper end 26 is then likely to extend radially and the forces generated by said expansion are then transmitted mainly by the beveled support face.
  • the upper end 26 is then likely to push substantially on the fastening elements 30 which are the studs which will deform elastically stretching.
  • the radial deformation of the upper end can be controlled and directed between the two fastening elements 30.
  • the spacing angle ⁇ remains constant and the fastening device 10 is held in abutment against the oblique wall 22 of the yoke.
  • the fixing element 30 When the engine is stopped, cold, the fixing element 30 returns to its original shape and presses the bearing face 29 of the upper end 26 to press against the oblique wall 22 of the cylinder head.
  • the collector fixing device When cold or hot during the passage of the exhaust gas, the fixing device keeps the exhaust manifold bearing against the wall of the cylinder head to avoid sealing defects.
  • Said fixing device comprises a lower end pressed against the cylinder head and resting against the crankcase for offer a small footprint of the engine. The upper end of said fixing device is able to absorb the effects of the transverse expansion of the end flange of the collector.
  • the invention is not limited to the embodiments of this plug, described above as examples, it encompasses all variants.
  • the upper end can be gripped between a fixing bar and the wall of the cylinder head.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention concerne un système de collecte de gaz d'échappement de moteur thermique de véhicule automobile.The present invention relates to a motor vehicle engine exhaust gas collection system.

La présente invention concerne plus particulièrement un système de fixation d'un collecteur d'échappement contre une paroi d'une culasse et de carter-cylindres.The present invention relates more particularly to a system for fixing an exhaust manifold against a wall of a cylinder head and crankcase.

La présente invention concerne un moteur thermique de véhicule automobile.The present invention relates to a motor vehicle engine.

Etat de la techniqueState of the art

Les moteurs thermiques de véhicules automobiles comportent un collecteur d'échappement connecté de façon connue à une culasse en partie haute dudit moteur. Le collecteur d'échappement a pour objet de récupérer des gaz d'échappement issus de la combustion de mélange air et combustible dans des cylindres en amont selon le sens de circulation des gaz. Le collecteur est généralement fixé par des brides et des boulons contre la paroi de la culasse de façon très rigide. Les différentes pièces de la culasse et du collecteur subissent cependant des échauffements variables entrainant des écarts de température importants. Des problèmes d'étanchéité apparaissent donc entre les différentes pièces en contact par suite de distorsions, conséquences de cette fixation rigide et des contraintes de dilatation résultantes. Des problèmes d'agencement apparaissent également : les moteurs présentant un encombrement de plus en plus petit dû à un espace de compartiment moteur réduit et à des contraintes d'architecture et d'esthétique du véhicule, le collecteur d'échappement est disposé dans des emplacements de plus en plus petits ce qui ne facilite pas la fixation du collecteur contre la paroi de la culasse , notamment lors des montées en température dudit collecteur.The motor engines of motor vehicles comprise an exhaust manifold connected in known manner to a cylinder head at the top of said engine. The purpose of the exhaust manifold is to recover exhaust gases resulting from the combustion of air and fuel mixture in cylinders upstream in the direction of circulation of the gases. The manifold is generally fixed by flanges and bolts against the wall of the cylinder head in a very rigid manner. The different parts of the cylinder head and collector, however, undergo variable heating causing significant temperature differences. Sealing problems therefore appear between the various parts in contact due to distortions, consequences of this rigid attachment and the resulting expansion stresses. Layout problems also arise: the engines have a smaller footprint due to a reduced engine compartment space and constraints of architecture and aesthetics of the vehicle, the exhaust manifold is arranged in locations smaller and smaller which does not facilitate the attachment of the collector against the wall of the cylinder head, especially during temperature rises of said collector.

Des problèmes de structure de fixation sont aussi à prendre en compte : les formes de fixation de collecteur sur culasse de plus en plus complexes pouvant diminuer la fiabilité de l'étanchéité desdites fixations.Fastening structure problems are also to be taken into account: the forms of collector fixing cylinder head increasingly complex may reduce the reliability of the sealing of said fasteners.

Des problèmes provenant de la culasse doivent aussi être pris en compte. Les moteurs sont de plus en plus légers et les culasses desdits moteurs sont donc fabriquées en matériau léger comme l'aluminium alors que le collecteur est de manière générale en acier ou en fonte. Les caractéristiques thermiques des deux matériaux en contact entrainent une dilatation différentielle très importante que le système formé par la culasse et le collecteur doit compenser sous peine de fissure et de perte d'étanchéité.Problems from the bolt should also be taken into account. The engines are becoming lighter and the cylinder heads of said engines are made of lightweight material such as aluminum while the manifold is generally steel or cast iron. The thermal characteristics of the two materials in contact cause a very large differential expansion that the system formed by the cylinder head and the collector must compensate for pain of cracking and loss of sealing.

Il est connu des moyens de fixation de collecteur d'échappement contre une culasse de moteur thermique qui permettent un certain degré de dilatation différentielle entre la culasse et le collecteur. Le collecteur est prolongé par des brides inférieures et supérieures de connexions. Lesdites brides inférieures et supérieures sont disposées de façon diamétralement opposées et les brides inférieures sont reçues dans une encoche dans la culasse tandis que les brides supérieures sont maintenues contre la culasse par une barrette fixée contre ladite culasse.It is known means for fixing exhaust manifold against a cylinder head engine that allow a certain degree of differential expansion between the cylinder head and the manifold. The manifold is extended by lower and upper flanges of connections. Said lower and upper flanges are arranged diametrically opposite and the lower flanges are received in a notch in the cylinder head while the upper flanges are held against the cylinder head by a bar fixed against said cylinder head.

La publication US5918912 divulgue ainsi un moyen de fixation d'un collecteur d'échappement contre une paroi de culasse de moteur thermique. Ladite paroi de culasse comporte des surfaces de raccordement et le collecteur comprend à une extrémité de raccordement des brides supérieures et des brides inférieures. Lesdites brides inférieures sont enserrées dans les surfaces de raccordement et les brides supérieures sont maintenues contre la paroi de ladite culasse par des bretelles de serrage.The publication US5918912 thus discloses a means for attaching an exhaust manifold against a wall of the engine cylinder head. Said cylinder wall has connecting surfaces and the manifold comprises at a connecting end upper flanges and lower flanges. Said lower flanges are clamped in the connecting surfaces and the upper flanges are held against the wall of said cylinder head by clamping straps.

Une telle association de la culasse et du collecteur peut poser des problèmes à hautes températures, notamment pour une culasse en aluminium et un collecteur en acier ou en fonte du fait des différences de dilatation thermique très importantes entre les deux matériaux. Un jeu peut se créer et l'étanchéité entre le collecteur et la culasse n'est plus assurée. De plus, les surfaces de raccordement de la culasse nécessitent un usinage supplémentaire, ce qui engendre une étape de fabrication et un coût supplémentaires.Such a combination of the cylinder head and the collector can cause problems at high temperatures, especially for an aluminum cylinder head and a steel or cast iron collector because of the very large differences in thermal expansion between the two materials. A game can be created and the seal between the collector and the cylinder head is no longer assured. In addition, the surfaces of bolt connection require additional machining, which generates an additional manufacturing step and cost.

La publication FR-A1-2897101 divulgue un système de fixation d'un collecteur d'échappement contre une paroi de culasse de moteur thermique. Le collecteur comprend à une extrémité de connexion avec la culasse un élément de fixation comportant des surfaces de connexions en biseau. Le système de fixation est composé de deux barrettes en appui sur les surfaces de connexion en biseau et fixées contre la paroi de culasse.The publication FR-A1-2897101 discloses a system for attaching an exhaust manifold against a cylinder wall of a heat engine. The manifold includes at a connection end with the yoke a fastener having beveled connection surfaces. The fixing system consists of two bars resting on the bevel connection surfaces and fixed against the cylinder wall.

Un inconvénient est que la dilatation différentielle de la culasse et du collecteur peut entrainer un soulèvement de la barrette supérieure entrainant ensuite un défaut d'étanchéité du système.A disadvantage is that the differential expansion of the cylinder head and the collector can cause an uplift of the upper bar then causing a leak of the system.

Un autre inconvénient est que la barrette supérieure est que la barrette ne présente pas de zones de déformation pour accompagner les dilatations différentielles entre le collecteur et la culasse.Another disadvantage is that the upper bar is that the bar does not have deformation zones to accompany the differential expansions between the collector and the cylinder head.

La publication US-A1-2005/0268602 divulgue un dispositif de fixation d'un collecteur de gaz d'échappement contre une culasse de moteur, ledit collecteur comportant une bride inférieure fixée solidaire de la culasse et une bride supérieure diamétralement opposée et enserrée entre la culasse et une barrette de fixation ; la bride supérieure ou la barrette de fixation comportant une partie élastique.The publication US-A1-2005 / 0268602 discloses a device for fixing an exhaust gas manifold against an engine cylinder head, said manifold having a fixed lower flange secured to the cylinder head and a diametrically opposed upper flange and clamped between the cylinder head and a fixing bar; the upper flange or the fixing bar having an elastic portion.

Un inconvénient est l'existence de jeu entre la barrette de fixation et la bride supérieure qui peut entrainer un défaut d'étanchéité.A disadvantage is the existence of clearance between the fixing bar and the upper flange which can cause a sealing defect.

Un autre inconvénient est que la partie élastique permet un écartement entre le collecteur et la culasse, ledit écartement peut entrainer un défaut d'étanchéité.Another disadvantage is that the elastic portion allows a gap between the collector and the yoke, said spacing may cause a sealing defect.

Un inconvénient dans les publications citées est la paroi de la culasse présente un espace important contre lequel est fixé le collecteur d'échappement, ce qui n'est pas le cas pour de petits moteurs thermiques avec un encombrement réduit.A disadvantage in the publications cited is the wall of the cylinder head has a large space against which is fixed the exhaust manifold, which is not the case for small heat engines with a small footprint.

Les publications US 5003934-A , JPH0942045-A , US4807436-A et DE10029241-A1 proposent ainsi un moteur thermique comportant un collecteur de gaz d'échappement fixé à une paroi de fixation d'une culasse et à une paroi de fixation d'un carter-cylindres.The publications US 5003934-A , JPH0942045-A , US4807436-A and DE10029241-A1 thus propose a heat engine comprising an exhaust gas manifold attached to a wall for fixing a cylinder head and to a wall for fixing a crankcase.

Le but de l'invention est de remédier à ces problèmes et un des objets de l'invention est un dispositif de fixation d'un collecteur de gaz d'échappement contre une paroi de culasse de moteur et de carter-cylindres, permettant un encombrement réduit du moteur.The object of the invention is to remedy these problems and one of the objects of the invention is a device for fixing an exhaust gas manifold against an engine cylinder head wall and crankcase, allowing congestion reduced engine.

Bref résumé de l'inventionBrief summary of the invention

L'invention concerne plus particulièrement un agencement de collecteur d'échappement d'un moteur à combustion interne selon la revendication 1. L'agencement de collecteur comporte une culasse fixée au-dessus d'un carter-cylindres,
en outre ledit collecteur comporte un col d'extrémité amont dans le prolongement d'une sortie de gaz de la culasse, et entouré par un dispositif de fixation comportant une extrémité de fixation inférieure présentant une première paroi fixée en appui contre une paroi de la culasse et une deuxième paroi en appui contre le carter-cylindres.The invention relates more particularly to an exhaust manifold arrangement of an internal combustion engine according to claim 1. The manifold arrangement comprises a cylinder head fixed above a crankcase,
in addition said collector comprises an upstream end neck in the extension of a gas outlet of the cylinder head, and surrounded by a fixing device having a lower fixing end having a first wall fixed in abutment against a wall of the cylinder head and a second wall bearing against the crankcase.

Le collecteur d'échappement comporte une extrémité inférieure fixée contre une paroi d'appui de la culasse et en appui contre le carter-cylindres, ce qui réduit l'encombrement de la fixation du collecteur et donc du moteur thermique.The exhaust manifold has a lower end fixed against a support wall of the cylinder head and in abutment against the crankcase, which reduces the bulk of the attachment of the manifold and therefore the engine.

Selon d'autres caractéristiques de l'invention :

  • l'extrémité inférieure présente un profil en biseau et la première et la deuxième paroi de l'extrémité inférieure du dispositif de fixation forment un angle d'écartement aigu.
According to other features of the invention:
  • the lower end has a bevelled profile and the first and second walls of the lower end of the fastener form an acute separation angle.

L'extrémité inférieure présente un profil en biseau pour être glissé et en appui dans un coin formé par la culasse et le carter-cylindres, ce qui facilite la fixation dudit dispositif.

  • le carter-cylindres comporte au moins une nervure de fixation dont une paroi est dans le prolongement d'un plan de joint du carter-cylindres en vis-à-vis avec la culasse et parallèle audit plan de joint, et qui est adaptée à recevoir en appui la deuxième paroi de l'extrémité inférieure du dispositif de fixation.
The lower end has a beveled profile to be slid and supported in a wedge formed by the cylinder head and the cylinder block, which facilitates the fixing of said device.
  • the crankcase comprises at least one fastening rib, one wall of which is in the extension of a plane of joint of the crankcase vis-à-vis with the yoke and parallel to said joint plane, and which is adapted to receive bearing the second wall of the lower end of the fixing device.

De manière avantageuse, le carter-cylindres comporte au moins une nervure de fixation dont une paroi s'étend vers l'extérieur du moteur dans le prolongement du plan de joint du carter-cylindres avec la culasse et parallèlement audit plan de joint, ladite paroi étant adaptée pour recevoir en appui la deuxième paroi de l'extrémité inférieure du dispositif de fixation. Cette nervure permet le maintien simple du dispositif de fixation contre le carter-cylindres. Cette nervure permet également une réduction de matière par rapport à une solution comprenant un trottoir de fixation s'étendant latéralement et parallèlement au plan de joint depuis un bord latéral du carter-cylindres en contact avec un bord latéral de la culasse.

  • le dispositif de fixation comporte une extrémité de fixation supérieure opposée en appui contre la paroi de la culasse présentant un profil en biseau.
Advantageously, the crankcase comprises at least one fixing rib, a wall extending outwardly of the engine in the extension of the joint plane of the crankcase with the cylinder head and parallel to said joint plane, said wall being adapted to receive bearing the second wall of the lower end of the fixing device. This rib allows the simple maintenance of the fixing device against the crankcase. This rib also allows a reduction of material with respect to a solution comprising a fastening sidewalk extending laterally and parallel to the joint plane from a lateral edge of the cylinder block in contact with a lateral edge of the cylinder head.
  • the fixing device comprises an opposite upper fastening end bearing against the wall of the cylinder head having a bevel profile.

De manière avantageuse, le dispositif de fixation comporte une extrémité supérieure opposée présentant un profil en biseau et fixée en appui contre la paroi de la culasse afin de mieux prendre en compte les efforts générés par la montée en température du dispositif de fixation lors du passage des gaz chauds dans le collecteur. En effet, Le passage des gaz à très haute température provoque un échauffement très important du col du collecteur et de l'extrémité supérieure du dispositif de fixation. La chaleur se répand donc sensiblement radialement par rapport à un axe d'écoulement des gaz dans le col du collecteur d'échappement. L'extrémité supérieure est alors susceptible de se déformer selon un gradient de température sensiblement radial et elle est alors susceptible de s'étendre radialement. Les efforts générés par ladite dilatation sont alors transmis principalement par la face d'appui en biseau

  • l'extrémité de fixation supérieure comporte une première paroi d'appui fixée en appui contre la paroi de la culasse et une deuxième paroi d'accueil pour recevoir une tête d'un élément de fixation en appui.
Advantageously, the fixing device comprises an opposite upper end having a bevelled profile and fixed in abutment against the wall of the cylinder head so as to take better account of the forces generated by the temperature rise of the fixing device during the passage of the hot gases in the collector. Indeed, the passage of gases at a very high temperature causes a very significant heating of the collector neck and the upper end of the fastener. The heat therefore extends substantially radially with respect to a gas flow axis in the neck of the exhaust manifold. The upper end is then likely to deform in a substantially radial temperature gradient and is then likely to extend radially. The forces generated by said expansion are then transmitted mainly by the beveled support face
  • the upper fixing end comprises a first bearing wall fixed in abutment against the wall of the cylinder head and a second receiving wall for receiving a head of a support element in support.

De manière avantageuse, l'extrémité de fixation supérieure comporte une première paroi fixée en appui contre la paroi de la culasse et une deuxième paroi adaptée pour recevoir en appui une tête d'un élément de fixation. Ledit élément de fixation peut être une vis de longueur appropriée pour ne pas impacter l'architecture de la culasse, la tête de l'élément de fixation permet le maintien du dispositif de fixation contre la culasse et d'accompagner les déformations dudit dispositif lors des passages des gaz chauds entrainant des montées en température du collecteur d'échappement.

  • l'extrémité supérieure de fixation comporte au moins un orifice de fixation traversé par l'élément de fixation en appui.
Advantageously, the upper fastening end comprises a first wall fixed in abutment against the wall of the cylinder head and a second wall adapted to receive a support of a head of a fastener. said fixing element may be a screw of appropriate length so as not to impact the architecture of the cylinder head, the head of the fastening element makes it possible to hold the fixing device against the cylinder head and to accompany the deformations of said device during the passages hot gases causing temperature rise of the exhaust manifold.
  • the upper fastening end comprises at least one fastening hole through which the fastening element bears.

De manière avantageuse, l'extrémité supérieure de fixation comporte au moins un orifice de fixation traversé par l'élément de fixation en appui pour permettre la fixation et le maintien du dispositif de fixation contre la paroi de la culasse.

  • l'extrémité supérieure du dispositif de fixation est traversée par deux éléments de fixation disposés de façon symétrique par rapport à un axe médian passant par le centre du collecteur.
Advantageously, the upper fastening end comprises at least one fastening hole through which the fastening element bears in order to allow fastening and holding of the fastening device against the wall of the bolt.
  • the upper end of the fixing device is traversed by two fixing elements arranged symmetrically with respect to a median axis passing through the center of the collector.

De manière avantageuse, deux éléments de fixation traversent l'extrémité supérieure du dispositif de fixation et sont disposés de façon symétrique par rapport à un axe médian passant par le centre du collecteur pour permettre un meilleur contrôle des déformations de ladite extrémité supérieure.

  • la première paroi et la deuxième paroi de l'extrémité supérieure du dispositif de fixation présente un angle d'écartement sensiblement complémentaire à l'angle d'écartement de l'extrémité inférieure de fixation.
Advantageously, two fixing elements pass through the upper end of the fixing device and are arranged symmetrically with respect to a median axis passing through the center of the manifold to allow better control of the deformations of said upper end.
  • the first wall and the second wall of the upper end of the fixing device has a separation angle substantially complementary to the angle of separation of the lower fixing end.

De manière avantageuse, l'angle d'écartement entre la première paroi d'appui et la deuxième paroi d'accueil est sensiblement complémentaire à l'angle d'écartement de l'extrémité inférieure diamétralement opposée ce qui permet de disposer d'un axe de l'orifice de fixation sensiblement parallèle au plan de joint de la culasse et de faciliter la mise en place de l'élément de fixation.

  • la paroi d'appui de la culasse sur laquelle est fixé en appui le dispositif de fixation, s'étend en biais vers l'extérieur de la culasse depuis le plan de joint de la culasse en vis-à-vis avec le carter-cylindres.
Advantageously, the angle of separation between the first bearing wall and the second receiving wall is substantially complementary to the spacing angle of the diametrically opposite lower end which allows to have an axis the fixing hole substantially parallel to the joint plane of the cylinder head and facilitate the establishment of the fastener.
  • the support wall of the cylinder head on which is fixed the support device, extends obliquely towards the outside of the cylinder head from the head gasket plane vis-à-vis with the crankcase .

De manière avantageuse, la paroi de culasse sur laquelle est fixé en appui le dispositif de fixation s'étend en biais vers l'extérieur de la culasse depuis le plan de joint de la culasse pour accueillir le dispositif de fixation avec son extrémité inférieur et son extrémité supérieure présentant un profil en biseau.

  • la nervure de fixation du carter-cylindres forme avec ladite paroi d'appui un angle compris entre 30 et 80° selon le sens antihoraire.
Advantageously, the yoke wall on which is fixed in support of the fixing device extends obliquely towards the outside of the cylinder head from the joint plane of the bolt to accommodate the fastener with its lower end and its upper end having a bevel profile.
  • the crankcase fixing rib forms with said bearing wall an angle of between 30 and 80 ° in the counterclockwise direction.

La paroi de culasse sur laquelle est fixé en appui le dispositif de fixation s'étend en biais vers l'extérieur de la culasse depuis le plan de joint de la culasse et, de manière aventageuse, forme un angle avec la paroi de la nervure compris entre 30 et 80° dans le sens antihoraire. Ledit angle permet une répartition des efforts de déformation du dispositif de fixation et un maintien dudit dispositif contre la culasse et le carter-cylindres.

  • un joint est disposé entre la première paroi d'appui du dispositif de fixation et de la paroi d'appui de la culasse et ledit joint est prolongé par une feuille disposée entre la deuxième paroi de l'extrémité inférieure du dispositif de fixation et la nervure de fixation.
The cylinder head wall on which is fixed the fixing device extends obliquely outwardly of the cylinder head from the joint plane of the cylinder head and, in an adventurous manner, forms an angle with the wall of the rib included between 30 and 80 ° counterclockwise. Said angle allows a distribution of the deformation forces of the fixing device and a holding of said device against the cylinder head and the crankcase.
  • a seal is disposed between the first support wall of the fastening device and the support wall of the yoke and said seal is extended by a sheet disposed between the second wall of the lower end of the fastener and the rib of fixation.

De manière avantageuse, un joint est tenu entre la paroi d'appui de la culasse et le dispositif de fixation, ledit joint est prolongé par une feuille disposée entre la deuxième paroi de l'extrémité inférieure dudit dispositif et le carter-cylindres pour permettre un glissement du dispositif lors de sa fixation en appui contre la culasse et le carter-cylindres.

  • le dispositif de fixation est partie du collecteur d'échappement.
Advantageously, a seal is held between the support wall of the yoke and the fixing device, said seal is extended by a sheet disposed between the second wall of the lower end of said device and the crankcase to allow a sliding of the device during its fixing in abutment against the cylinder head and the crankcase.
  • the fastening device is part of the exhaust manifold.

De manière avantageuse, le dispositif de fixation entoure le col du collecteur d'échappement et est fixé audit collecteur par exemple par soudage. Il peut être aussi partie du collecteur. Ce qui permet une facilité de montage.

  • le dispositif de fixation est connecté à au moins deux sorties d'échappement de la culasse.
Advantageously, the fixing device surrounds the neck of the exhaust manifold and is fixed to said manifold for example by welding. It can also be part of the collector. This allows ease of assembly.
  • the fixing device is connected to at least two exhaust outlets of the cylinder head.

De manière avantageuse, le dispositif de fixation est connecté à plusieurs sorties de gaz de la culasse, ce qui permet d'aménager de façon optimale les collecteurs d'échappement et de réduire l'encombrement du moteur.Advantageously, the fixing device is connected to several gas outlets of the cylinder head, which optimally arranges the exhaust manifolds and reduce the size of the engine.

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 représente une vue schématique du dispositif de fixation du collecteur contre la culasse.
  • la figure 2 représente une vue schématique de coupe selon le plan AA du dispositif de fixation monté contre la culasse et le carter-cylindres.
  • la figure 3 représente une vue schématique de coupe selon le plan AA du dispositif de fixation monté contre la culasse et le carter-cylindres avec les efforts en jeu.
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 the collector fixing device against the cylinder head.
  • the figure 2 is a schematic sectional view along the plane AA of the fastener mounted against the cylinder head and the crankcase.
  • the figure 3 is a schematic sectional view along the plane AA of the fastener mounted against the cylinder head and the crankcase with the forces involved.

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.

Dans la même description, le terme d'orientation horizontal se réfère à un plan horizontal du plan de joint de la culasse en vis-à-vis avec le plan de joint horizontal du carter-cylindres et le terme vertical est selon un axe orthogonal auxdits plans de joints avec un sens bas depuis le carter-cylindres vers le haut vers la culasse.In the same description, the term horizontal orientation refers to a horizontal plane of the joint plane of the cylinder head vis-à-vis the horizontal joint plane of the crankcase and the vertical term is along an axis orthogonal to said joint planes with a downward direction from the crankcase upwards to the cylinder head.

Ainsi que représenté dans les figures 1, 3 et 6, un collecteur d'échappement 11 est fixé à une paroi 12 d'une culasse 14 d'un moteur thermique (non représenté) de véhicule automobile pour collecter les gaz d'échappement issus de la combustion dans les cylindres du moteur. Le collecteur est ainsi connecté au moins à une sortie 13 de gaz d'échappement.As represented in the figures 1 , 3 and 6 , an exhaust manifold 11 is attached to a wall 12 of a cylinder head 14 of a motor vehicle engine (not shown) for collecting exhaust gases from combustion in the engine cylinders. The collector is thus connected at least to an exhaust gas outlet 13.

Dans la description qui suit le collecteur de gaz d'échappement est connecté à une unique sortie de gaz pour faciliter la compréhension mais il va de soi que ledit collecteur peut comporter par exemple plusieurs branches connectées chacune à une sortie de gaz d'échappement de la culasse selon le mode de réalisation décrit ci-après.In the following description the exhaust gas manifold is connected to a single gas outlet to facilitate understanding but it goes without saying that said manifold may comprise for example several branches each connected to an exhaust gas outlet of the cylinder head according to the embodiment described below.

De même, on entend par collecteur d'échappement un élément de traitement de la ligne d'échappement du moteur thermique. Ainsi, dans la description qui suit, ledit collecteur est un pot catalytique fixé à une sortie de gaz de la culasse.Similarly, exhaust manifold means a processing element of the exhaust line of the engine. Thus, in the following description, said manifold is a catalytic converter attached to a gas outlet of the cylinder head.

Les gaz d'échappement sont dirigés ensuite par exemple vers une turbine d'un turbocompresseur (non représenté). Comme représenté en figure 2, la culasse 14 comporte un plan de joint 16 horizontal en vis-à-vis avec un plan de joint 17 du carter-cylindres 15. Entre lesdits deux plans est disposé de manière connue un joint de culasse 41.The exhaust gas is then directed for example to a turbine of a turbocharger (not shown). As represented in figure 2 , the yoke 14 has a horizontal joint plane 16 facing a joint plane 17 of the crankcase 15. Between said two planes is arranged in a known manner a cylinder head gasket 41.

Selon un mode de réalisation préféré représenté sur les figures 2 et 5 le carter-cylindres comprend au moins une équerre de fixation 18, qui s'étend latéralement depuis le bord latéral 19 du carter-cylindres. Ladite équerre comprend ainsi une paroi d'accueil 20 dans le prolongement du plan de joint 17 du carter-cylindres, portée par une nervure de maintien 21 s'étendant contre une paroi verticale du carter-cylindres selon un axe perpendiculaire à ladite paroi d'accueil 20.According to a preferred embodiment represented on the figures 2 and 5 the crankcase comprises at least one fastening bracket 18, which extends laterally from the side edge 19 of the crankcase. Said bracket thus comprises a receiving wall 20 in the extension of the joint plane 17 of the crankcase, carried by a retaining rib 21 extending against a vertical wall of the crankcase along an axis perpendicular to said wall of the crankcase. home 20.

Selon un autre mode de réalisation représenté en figures 3, 4 et 6, le carter-cylindres comporte un trottoir d'accueil 40 présentant ainsi une paroi d'accueil 20, s'étendant latéralement depuis le plan de joint 17 du carter-cylindres. Ledit trottoir peut aussi être porté par au moins une nervure de maintien s'étendant contre la paroi du carter-cylindres selon un axe sensiblement orthogonal au plan de joint.According to another embodiment shown in Figures 3, 4 and 6 , the crankcase has a sidewalk 40 thus having a receiving wall 20, extending laterally from the joint plane 17 of the crankcase. Said sidewalk may also be carried by at least one retaining rib extending against the wall of the cylinder block along an axis substantially orthogonal to the joint plane.

Le collecteur 11 est fixé à une paroi 12 de culasse 14 sur une surface plane sensiblement oblique 22 par rapport à l'axe vertical. Ladite paroi 22 s'étend ainsi en biais depuis le plan de joint 16 de la culasse vers l'extérieur du moteur comme représenté en figure 2. Ladite paroi 22 forme avec le plan de joint 16 de la culasse un angle d'inclinaison β compris entre 30 et 80°, ledit angle d'inclinaison étant défini selon le sens antihoraire depuis le prolongement du plan de joint 16 de la culasse ou depuis la paroi d'accueil 20 du carter-cylindres, vers la paroi oblique 22 de la culasse. De manière préférentielle, ledit angle d'inclinaison est de 45°.The collector 11 is fixed to a wall 12 of yoke 14 on a substantially oblique flat surface 22 with respect to the vertical axis. Said wall 22 thus extends obliquely from the joint plane 16 of the cylinder head towards the outside of the engine as shown in FIG. figure 2 . Said wall 22 forms with the joint plane 16 of the cylinder head an angle of inclination β between 30 and 80 °, said angle of inclination being defined in the counterclockwise direction from the extension of the joint plane 16 of the cylinder head or from the housing wall 20 of the cylinder block, towards the oblique wall 22 of the cylinder head. Preferably, said angle of inclination is 45 °.

Selon les figures 3 et 4, le collecteur 11 comprend un col d'extrémité 23 amont selon le sens d'écoulement des gaz d'échappement entouré par un dispositif de fixation 10. Ledit dispositif est par exemple une bride de fixation 24 présentant une ouverture de passage dans laquelle est enfoncé le col d'extrémité du collecteur.According to Figures 3 and 4 , the manifold 11 comprises an upstream end neck 23 in the direction of flow of the exhaust gas surrounded by a fixing device 10. Said device is for example a fastening flange 24 having a passage opening in which is recessed the end collar of the collector.

Le dispositif de fixation 10 comporte une extrémité inférieure 25 et une extrémité supérieure 26 opposée, chacune desdites deux extrémités présente un profil en biseau.The fastening device 10 has a lower end 25 and an opposite upper end 26, each of said two ends has a bevel profile.

L'extrémité inférieure 25 dudit dispositif comporte ainsi une première paroi 27 d'appui plaquée contre la paroi oblique 22 de la culasse et une deuxième paroi en appui 28 sur le carter-cylindres et plus précisément sur la paroi d'accueil 20 du carter-cylindres. L'angle d'écartement entre les deux parois 27, 28 de l'extrémité inférieure 25 est donc aigu sensiblement égal à l'angle d'inclinaison β de la paroi oblique 22 de la culasse.The lower end 25 of said device thus comprises a first support wall 27 pressed against the oblique wall 22 of the cylinder head and a second wall 28 bearing on the cylinder block and more specifically on the housing wall 20 of the housing. cylinders. The angle of separation between the two walls 27, 28 of the lower end 25 is therefore acute substantially equal to the angle of inclination β of the oblique wall 22 of the cylinder head.

Selon les figures 3 et 4, l'extrémité supérieure 26 du dispositif de fixation comporte la paroi d'appui 27 plaquée contre la paroi oblique 22 de la culasse et une deuxième paroi 29 pour recevoir une tête d'un élément de fixation 30 en appui. Ledit élément de fixation 30 peut être un goujon de fixation qui est enfoncé dans un trou dans la paroi de la culasse en traversant un orifice dans l'extrémité supérieure 26 du dispositif de fixation 10. La tête de l'élément de fixation appuie ainsi sur la deuxième paroi 29 de l'extrémité supérieure.According to Figures 3 and 4 , the upper end 26 of the fastening device comprises the bearing wall 27 pressed against the oblique wall 22 of the yoke and a second wall 29 for receiving a head of a fastening element 30 in abutment. Said fastening element 30 may be a fastening stud which is pressed into a hole in the wall of the cylinder head through an orifice in the upper end 26 of the fastener 10. The head of the fastener thus presses on the second wall 29 of the upper end.

Les première et deuxième parois 27, 29 de l'extrémité supérieure 26 forment entre elles un angle d'écartement α sensiblement complémentaire à l'angle d'écartement β entre les deux parois 27, 28 de l'extrémité inférieure 25.The first and second walls 27, 29 of the upper end 26 form between them a spacing angle α substantially complementary to the spacing angle β between the two walls 27, 28 of the lower end 25.

Selon un mode de réalisation représenté en figure 1 et 3, deux éléments de fixation identiques sont disposés dans l'extrémité supérieure et de manière préférentielle de façon symétrique par rapport à un plan vertical médian BB du dispositif passant par le centre de l'ouverture 32 de passage des gaz d'échappement.According to an embodiment represented in figure 1 and 3 two identical fixing elements are arranged in the upper end and preferably symmetrically with respect to a median vertical plane BB of the device passing through the center of the opening 32 for the passage of the exhaust gases.

Entre le dispositif de fixation et la paroi de la culasse est disposé un joint de collecteur 33 entourant également l'ouverture de passage 32 des gaz.Between the fixing device and the wall of the cylinder head is disposed a manifold gasket 33 also surrounding the passage opening 32 of the gas.

Selon un mode de réalisation représenté en figure 6, ledit joint 33 de collecteur est sensiblement en forme de plaque et comporte en partie inférieure au moins une feuille 34 s'étendant selon le côté latéral du carter-cylindres, ladite feuille étant adaptée pour recouvrir de manière préférentielle la surface de la paroi d'accueil 20 du carter-cylindres. Ladite feuille 34 peut aussi recouvrir la deuxième paroi 28 de l'extrémité inférieure 25 du dispositif de fixation.According to an embodiment represented in figure 6 said manifold gasket 33 is substantially plate-shaped and has at the bottom part at least one sheet 34 extending along the lateral side of the cylinder block, said sheet being adapted to preferentially cover the surface of the wall of the cylinder; home 20 of the crankcase. Said sheet 34 may also cover the second wall 28 of the lower end 25 of the fixing device.

Selon un autre mode de réalisation non représenté, le joint de culasse 41 est prolongé latéralement pour recouvrir la surface de la paroi d'accueil 20 du carter-cylindres 15. Dans ce mode de réalisation, le joint de collecteur 33 s'arrête en partie basse à l'extrémité inférieure 42 de la culasse 14.According to another embodiment not shown, the cylinder head gasket 41 is extended laterally to cover the surface of the housing wall 20 of the crankcase 15. In this embodiment, the collector gasket 33 stops in part. low at the lower end 42 of the yoke 14.

Selon un mode de réalisation préféré, le dispositif de fixation 10 est fixé solidaire du collecteur 11 par soudage entre le col du collecteur et les bords de l'ouverture de passage du dispositif de fixation.According to a preferred embodiment, the fixing device 10 is secured to the collector 11 by welding between the neck of the collector and the edges of the passage opening of the fastener.

Selon un autre mode de réalisation, le dispositif de fixation 10 est partie du collecteur.According to another embodiment, the fixing device 10 is part of the collector.

Le montage et la fixation du collecteur 11 contre la culasse 14 et le carter-cylindres 15 comprend les étapes suivantes :

  • mise en place du joint de collecteur 33 sur la paroi oblique 22 de la culasse 14, le côté inférieur dudit joint comportant la feuille 34 permet un positionnement aisé dudit joint 33. De manière préférentielle, la partie en angle dudit joint est insérée dans le coin inférieur formé par la partie inférieure 42 de la paroi de la culasse 14 et du carter-cylindres,
  • présentation du collecteur 11 devant la culasse 14 en insérant la partie inférieure 25 du dispositif de fixation dans le coin inférieur entre la paroi oblique 22 de la culasse et la paroi d'accueil 20 du carter-cylindres.
  • présentation des goujons 30 dans les orifices de fixation de l'extrémité supérieure du dispositif de fixation,
  • enfoncement des goujons 30 dans des trous dans la culasse en regard des orifices de fixation. Comme représenté dans la figure 4, lors dudit enfoncement des éléments de fixation 30, la partie supérieure 26 vient se plaquer contre la paroi oblique 22 de la culasse, entrainant également un glissement de la partie inférieure 25 qui vient alors se loger dans le coin inférieure formé par la partie inférieure de la paroi de la culasse et la paroi d'accueil 20 du carter-cylindres. Le coin formé par la partie inférieure de la paroi oblique 22 de la culasse et la paroi d'accueil 20 du carter-cylindres est sensiblement complémentaire à la partie inférieure du dispositif de fixation, ce qui permet un maintien efficace de la partie inférieure 25 en biseau du dispositif de fixation 10 contre la paroi de la culasse 14 et en appui sur le carter-cylindres 15.
Mounting and fixing the manifold 11 against the cylinder head 14 and the crankcase 15 comprises the following steps:
  • placing the manifold seal 33 on the oblique wall 22 of the yoke 14, the lower side of said seal comprising the sheet 34 allows easy positioning of said seal 33. Preferably, the corner portion of said seal is inserted into the corner lower part formed by the lower part 42 of the wall of the cylinder head 14 and the crankcase,
  • presentation of the collector 11 in front of the cylinder head 14 by inserting the lower part 25 of the fastener in the lower corner between the oblique wall 22 of the cylinder head and the receiving wall 20 of the crankcase.
  • presentation of the studs 30 in the fixing holes of the upper end of the fixing device,
  • depressing the studs 30 into holes in the cylinder head opposite the fixing holes. As represented in the figure 4 during said depressing of the fastening elements 30, the upper part 26 is pressed against against the oblique wall 22 of the cylinder head, also causing a sliding of the lower portion 25 which then is housed in the lower corner formed by the lower part of the wall of the cylinder head and the housing 20 of the crankcase. The wedge formed by the lower part of the oblique wall 22 of the cylinder head and the receiving wall 20 of the cylinder block is substantially complementary to the lower part of the fixing device, which allows the lower part 25 to be effectively held in position. bevel of the fixing device 10 against the wall of the cylinder head 14 and resting on the crankcase 15.

Le passage des gaz à très haute température provoque un échauffement très important du col du collecteur 11 et du dispositif de fixation. La chaleur se répand donc sensiblement radialement par rapport à l'axe X d'écoulement des gaz. L'extrémité inférieure 25 du dispositif de fixation est bloquée contre la paroi oblique 22 de la culasse et la paroi d'accueil 28 du carter-cylindres. L'extrémité supérieure 26 est alors susceptible de se déformer selon un gradient de température sensiblement radial par rapport à l'axe X d'écoulement des gaz. Ladite extrémité supérieure 26 est alors susceptible de s'étendre radialement et les efforts générés par ladite dilatation sont alors transmis principalement par la face d'appui en biseau. L'extrémité supérieure 26 est alors susceptible de pousser sensiblement sur les éléments de fixation 30 que sont les goujons qui vont se déformer en étirement de façon élastique. La déformation radiale de l'extrémité supérieure peut être contrôlée et dirigée entre les deux éléments de fixation 30. L'angle d'écartement α reste constant et le dispositif de fixation 10 est maintenu en appui contre la paroi oblique 22 de la culasse.The passage of gases at a very high temperature causes a very significant heating of the collar of the collector 11 and the fixing device. The heat is therefore spread substantially radially with respect to the axis X of gas flow. The lower end 25 of the fixing device is locked against the oblique wall 22 of the cylinder head and the accommodating wall 28 of the crankcase. The upper end 26 is then likely to deform in a substantially radial temperature gradient relative to the axis X of gas flow. Said upper end 26 is then likely to extend radially and the forces generated by said expansion are then transmitted mainly by the beveled support face. The upper end 26 is then likely to push substantially on the fastening elements 30 which are the studs which will deform elastically stretching. The radial deformation of the upper end can be controlled and directed between the two fastening elements 30. The spacing angle α remains constant and the fastening device 10 is held in abutment against the oblique wall 22 of the yoke.

Lorsque le moteur est en arrêt, à froid, l'élément de fixation 30 reprend sa forme originelle et appuie sur la face d'appui 29 de l'extrémité supérieure 26 pour la plaquer contre la paroi oblique 22 de la culasse.When the engine is stopped, cold, the fixing element 30 returns to its original shape and presses the bearing face 29 of the upper end 26 to press against the oblique wall 22 of the cylinder head.

L'objectif est atteint par le dispositif de fixation du collecteur. A froid ou à chaud lors du passage des gaz d'échappement, le dispositif de fixation maintient le collecteur d'échappement en appui contre la paroi de la culasse pour éviter des défauts d'étanchéité. Ledit dispositif de fixation comporte une extrémité inférieure plaquée contre la culasse et en appui contre le carter-cylindres pour offrir un encombrement réduit du moteur. L'extrémité supérieure dudit dispositif de fixation est apte à absorber les effets de la dilatation transversale de la bride d'extrémité du collecteur.The objective is achieved by the collector fixing device. When cold or hot during the passage of the exhaust gas, the fixing device keeps the exhaust manifold bearing against the wall of the cylinder head to avoid sealing defects. Said fixing device comprises a lower end pressed against the cylinder head and resting against the crankcase for offer a small footprint of the engine. The upper end of said fixing device is able to absorb the effects of the transverse expansion of the end flange of the collector.

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. Notamment, l'extrémité supérieure peut être prise en étau entre une barrette de fixation et la paroi de la culasse.As goes without saying, the invention is not limited to the embodiments of this plug, described above as examples, it encompasses all variants. In particular, the upper end can be gripped between a fixing bar and the wall of the cylinder head.

Claims (11)

  1. Arrangement of exhaust manifold (11) of an internal combustion engine comprising a cylinder head (14) attached on top of a cylinder block (15), said manifold (11) comprising an upstream end neck (23) connected to a gas outlet (32) of the cylinder head and surrounded by an attachment device (10), characterized in that
    said attachment device comprises a lower attachment end (25) having a bevelled profile with a first wall pressed against a bearing wall (22) of the cylinder head extending diagonally towards the exterior of the cylinder head from a seal plane of the cylinder head (16) facing the cylinder block, and a second wall (28) bearing against a receiving wall (20) in the extension of a seal plane (17) of the cylinder block facing the cylinder head, said first and second walls (27, 28) of the lower end (25) of the attachment device forming an acute spreading angle (β).
  2. Arrangement according to Claim 1, characterized in that the attachment device (10) comprises an upper attachment upper end (26) pressed against the bearing wall (22) of the cylinder head.
  3. Arrangement according to Claim 2, characterized in that the upper attachment end (26) has a bevelled profile and comprises the first wall (27) attached bearing against the bearing wall (22) of the cylinder head and a second wall (29) for receiving a head of a bearing attachment element (30).
  4. Arrangement according to Claim 3, characterized in that the upper attachment end (26) comprises at least one attachment orifice through which passes the bearing attachment element (30).
  5. Arrangement according to Claim 3 or 4, characterized in that the upper end (26) of the attachment device (10) has passing through it two attachment elements (30) arranged symmetrically with respect to a median plane passing through the centre of the end neck (23) of the manifold.
  6. Arrangement according to any one of Claims 3 to 5, characterized in that the first wall and the second wall of the upper end (27, 29) of the attachment device has a spreading angle which is essentially complementary to the spreading angle of the lower attachment end (25).
  7. Arrangement according to any one of Claims 1 to 6, characterized in that the receiving wall (20) of the cylinder block forms, with said bearing wall (22) of the cylinder head, an angle of between 30 and 80°.
  8. Arrangement according to any one of Claims 1 to 7, characterized in that a seal (33) is arranged between the first bearing wall (27) of the attachment device and the bearing wall (22) of the cylinder head, said seal being extended by a leaf (34) arranged between the second wall (28) of the lower end of the attachment device and the receiving wall (20) of the cylinder block.
  9. Arrangement according to any one of Claims 1 to 8, characterized in that the attachment device (10) is part of the exhaust manifold (11).
  10. Arrangement according to any one of Claims 1 to 9, characterized in that said device (10) is connected to at least two gas outlets of the cylinder head.
  11. Motor vehicle combustion engine comprising a cylinder block (15), a cylinder head (14) and a manifold (11) arranged against said cylinder head and said cylinder block according to any one of Claims 1 to 10.
EP17158614.2A 2016-04-13 2017-03-01 Optimised arrangement of exhaust manifold with dovetail attachment Active EP3232028B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1653243A FR3050231A1 (en) 2016-04-13 2016-04-13 OPTIMIZED EXHAUST MANIFOLD ARRANGEMENT WITH ROD FITTING

Publications (2)

Publication Number Publication Date
EP3232028A1 EP3232028A1 (en) 2017-10-18
EP3232028B1 true EP3232028B1 (en) 2019-07-17

Family

ID=57113421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17158614.2A Active EP3232028B1 (en) 2016-04-13 2017-03-01 Optimised arrangement of exhaust manifold with dovetail attachment

Country Status (2)

Country Link
EP (1) EP3232028B1 (en)
FR (1) FR3050231A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3096405A1 (en) * 2019-05-24 2020-11-27 Renault S.A.S. notch on the cylinder head intake face for oblique mounting on engine cylinder head

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631312C1 (en) * 1986-09-13 1987-07-02 Mtu Friedrichshafen Gmbh Device for holding exhaust pipes
DE3823685C1 (en) * 1988-07-13 1989-05-24 Mtu Friedrichshafen Gmbh
JPH0942045A (en) * 1995-07-28 1997-02-10 Suzuki Motor Corp Tightening structure for cylinder block
DE19653908A1 (en) 1996-12-21 1998-06-25 Daimler Benz Ag Device for connecting a pipe bend
DE10029241B4 (en) * 2000-06-14 2012-10-31 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Cylinder head attachment to a cylinder block of an internal combustion engine
DE102004010815A1 (en) 2004-03-05 2005-09-29 Benteler Automobiltechnik Gmbh Arrangement for fixing an exhaust manifold on the cylinder head of an internal combustion engine
FR2897101A1 (en) 2006-02-08 2007-08-10 Renault Sas Exhaust manifold fixing device for combustion engine, has bars constituted of single piece connected and mounted on cylinder head and upper end of flange, respectively, where flange is supported on cylinder head

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3232028A1 (en) 2017-10-18
FR3050231A1 (en) 2017-10-20

Similar Documents

Publication Publication Date Title
EP3232028B1 (en) Optimised arrangement of exhaust manifold with dovetail attachment
FR2886363A1 (en) FLAT METAL JOINT HAVING FRANGIBLE LINK PARTS
EP3265657B1 (en) Fixation device for exhaust gas manifold
FR2906350A1 (en) ANNULAR COMBUSTION CHAMBER OF A TURBOMACHINE
EP3001132B1 (en) Method for manufacturing a heat exchanger
FR2925588A1 (en) Gas exhaust manifold flange fixing and maintaining device for internal combustion engine, has lower and upper chamfers placed opposite to connection radius of each duct of manifold such that radius of each duct is at distance from device
EP1780386B1 (en) Inlet flange of a curved conduit from an exhaust manifold and an internal combustion engine with such a flange
FR2921696A1 (en) Turbocompressor fixing device for internal combustion engine of motor vehicle, has sealing joint arranged between flange and spacer to provide sealing of device and to guide operator while maintaining turbocompressor in suspension
WO2022096820A1 (en) Fastening of an exhaust cone in a turbomachine nozzle
FR3050232A3 (en) FIXING RING PROTECTION SCREEN
EP3976947B1 (en) Notch on a cylinder head inlet surface for oblique attachment on an engine cylinder head
EP3002441B1 (en) Cylinder head cover of an internal combustion engine
FR3053756A1 (en) THERMAL PROTECTION DEVICE FOR THERMAL MOTOR TURBOCHARGER
FR2909734A1 (en) DEVICE FOR FIXING TWO MECHANICAL ORGANS
EP3959479B1 (en) Heat exchanger with securement of the fastening at the header corner
EP3092394B1 (en) Fixed-head internal combustion engine with improved gas-tightness
FR3028605A1 (en) FIXING DEVICE FOR HEAT EXCHANGER
FR3094783A1 (en) Diagonal fixing device on cylinder head
FR3095503A1 (en) Heat exchanger with improved corner fixing.
FR2981410A1 (en) GAS SUPPLY MODULE OF A MOTOR VEHICLE ENGINE
FR3096406A1 (en) boss on cylinder head intake face for obliquely fixing on crankcase cylinder head
FR3048049A1 (en) DEVICE FOR CONFORMING A FLEXIBLE CONDUIT
FR3042155A1 (en) EXHAUST LINE PROTECTION SCREEN
FR2914730A1 (en) Exhaust element e.g. exhaust tube, connecting system, for motor vehicle, has maintenance unit constituted by end stop defined at level of male fitting unit, where stop cooperates with pin to maintain male and female fitting units
FR2887928A1 (en) Engine cylinder block and manifold assembly uses flat metal gasket between sealed surfaces with ridges on gasket fitting into surface grooves

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180410

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180802

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190206

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602017005257

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1156032

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190815

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190717

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1156032

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191017

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191118

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191017

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191117

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191018

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602017005257

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG2D Information on lapse in contracting state deleted

Ref country code: IS

26N No opposition filed

Effective date: 20200603

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200301

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190717

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230324

Year of fee payment: 7

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230608

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240320

Year of fee payment: 8

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602017005257

Country of ref document: DE

Owner name: NEW H POWERTRAIN HOLDING, S.L.U., ES

Free format text: FORMER OWNER: RENAULT S.A.S., BOULOGNE BILLANCOURT, FR