Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
  • F01P11/04—Arrangements of liquid pipes or hoses
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F1/00—Tubular elements; Assemblies of tubular elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L23/00—Flanged joints
  • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
  • F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
  • F28D21/0001—Recuperative heat exchangers
  • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/02—Header boxes; End plates
• • 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
  • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
  • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
• • 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
  • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
  • F02M26/65—Constructional details of EGR valves
  • F02M26/72—Housings
  • F02M26/73—Housings with means for heating or cooling the EGR valve
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
  • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels

Definitions

• the invention relates to a cooling fluid supply flange for a component to be cooled, and a component equipped with such a flange. It will find its applications, in particular, as a supply flange for cooling fluid of a thermal engine air circuit valve.
• thermal engine air circuit designates the circuit between the intake inlet and the exhaust outlet of the engine.
• the valve can be arranged in the intake circuit, the exhaust circuit, or a recirculation loop through which the exhaust gases fed back to the inlet (EGR in English) pass.
• an exhaust gas recirculation system of an internal combustion engine reduces the amount of nitrogen oxides present in the exhaust gas.
• a recirculation system comprises a bypass channel on the gas exhaust pipe, this channel being equipped with a flow control valve, called the EGR valve, making it possible to return the desired quantity to the intake of the engine. exhaust gas.
• Such a valve is traversed by gases which, even if they are sometimes cooled before crossing the valve, are very high temperatures. It is therefore appropriate to cool said valve and it is known in this sense to use a coolant passing through a network of conduits running through the valve.
• inlet and / or outlet flanges are used. They are centered on the conduits of the valve with which they communicate by a barrel favoring the establishment and the positioning of the flanges on the valve.
• the invention proposes to overcome these problems by improving the cooling of the valve near the flange without losing the centering functionality of the flanges of the state of the art.
• the invention thus relates to a cooling fluid supply flange for a component to be cooled, in particular a valve, said flange comprising a centering shaft in a duct for circulating said cooling fluid in said component, said cylinder being extending in an axial direction, said shaft being traversed by a circulation channel of said cooling fluid extending in said axial direction.
• said barrel has one or more passages allowing a transverse circulation for the fluid between said circulation duct of the component and said circulation channel of said flange.
• said channel opens at a distal end of the barrel
• said barrel is cylindrical, in particular of circular section,
• said flange comprises at the base of the shank a shoulder configured to cooperate with a seal intended to seal between said component circulation duct and the outside of the component,
• the passage or passages are located between said shoulder and said distal end of the barrel
• the said passage or passages are slots extending in the direction of longitudinal extension of the shank
• the passage or passages are open axially at the distal end of the barrel
• the passage or passages are three in number, for example angularly distributed at 120 ° to one another,
• said barrel comprises an annular wall extending around the axial direction in which the passages are formed, two consecutive passages defining between them a branch,
• each reinforcing rib being disposed in said barrel circulation channel from the center of the channel to a branch
• the invention also relates to a component to be cooled, in particular a thermal engine air circuit valve, such as an exhaust gas recirculation valve or EGR valve, comprising a circulation duct for a cooling fluid and a flange as described above for the passage of said fluid to and / or from said conduit.
• a thermal engine air circuit valve such as an exhaust gas recirculation valve or EGR valve
• the invention relates to a valve of a cooling circuit of a heat engine, comprising a cooling fluid circulation duct and a flange as described above for the passage of said fluid to and / or from said duct. .
• Said duct is advantageously flared at the right of said barrel to create a jacket for circulating said cooling fluid between said barrel and a wall of said duct.
• Said wall of the duct may comprise an angular succession of ribs and grooves to limit the contact surface between the barrel and the component.
• Said ribs and / or grooves are, for example, oriented along the longitudinal axis of the barrel.
• only the surface of the grooves is machined.
• the invention relates to a cooling fluid supply flange 1 for a component to be cooled, in particular a motor vehicle component. It may in particular be an exhaust gas recirculation valve. Such a valve is partially illustrated in FIG.
• Said component to be cooled is produced, for example, in a structure or body 2 in the foundry, in particular aluminum and / or aluminum alloy.
• said body 2 comprises a non-visible gas circulation duct.
• a shutter member of the valve such as a valve or flap, is configured to more or less close said gas flow duct so as to allow an adjustment of their flow through the valve.
• Said valve may comprise kinematic members, such as a gear wheel gear, for actuating one or more shut-off members from a drive motor of the valve. It may further comprise control means, in particular a position sensor, said kinematic and / or shutter members.
• said component comprises a network for passing a cooling fluid, in particular water added with antifreeze, in particular glycol, originating from a cooling circuit of the vehicle.
• Said component comprises at least one duct 4 circulating said cooling fluid through which it enters said component and / or leaves said component.
• Said flange 1 comprises a centering shaft 3 in said circulation duct 4 of the cooling fluid in said component.
• Said drum 3 extends in an axial direction D. It defines a channel 5 for circulating said cooling fluid extending in said axial direction D.
• said barrel 3 is, for example, cylindrical, in particular of circular cross-section.
• Said circulation channel 5 may also be of circular section so that said shank 3 is formed of an annular wall 17.
• Said channel 5 opens in said axial direction D, for example, at a distal end 1 1 of the 3. The said barrel 3 promotes the introduction of the flange 1 in the component to be cooled and its good positioning vis-à-vis it.
• said flange 1 here comprises a plate 7 for fixing to said component.
• Said platen 7 is, for example, perpendicular to said barrel 3. It may comprise orifices 9 for fixing screws, not illustrated.
• said component to be cooled comprises, for example, bores 6 for fixing said flange 1 to said component to be cooled by means of said screws.
• said component to be cooled may comprise a seal 8 for sealing between said cooling fluid circulation duct 4 and the outside of the component to be cooled.
• Said gasket 8 is located between said flange 1 and said component to be cooled and it is understood that the sealing depends, in particular, on a good positioning of said flange 1 with respect to said component.
• Said flange 1 may comprise, at the base of the shank 3, a shoulder 15, configured to cooperate with the gasket 8.
• Said flange 1 may furthermore of course comprise one or more connection orifices, not illustrated, to the cooling circuit feeding said component to be cooled.
• said barrel 5 has one or more passages 13 allowing a transverse circulation for the fluid between said duct 4 for circulating the component and said channel 5 for flowing said flange 1.
• transverse direction a direction is understood inclined with respect to the longitudinal direction of the barrel 3.
• Said cooling fluid is thus directed not only towards the distal end 11 of the barrel 3, but also towards a wall 10 of the circulation duct 6 lying laterally opposite said barrel 3. Said wall 10 may consequently be also cooled. This avoids the formation of hot spots undergoing strong thermal expansion phenomena making work the body material 2 near the flange 1 and may affect the sealing provided by said seal 8 and the good connection between the flange 1 and the component at the level of said bores 6.
• the at least one passage 13 is located, for example, between said shoulder 15 and said distal end 11 of the barrel 3.
• the at least one passage 13 is here slots extending in the direction of longitudinal extension of the barrel, said slots 13 being open axially at the distal end 11 of the barrel 3.
• the said slot or slots 13 are here three in number, regularly spaced.
• Said slots 13 are separated by branches 19 of said shank 3 extending angularly between two slots 13 neighbors of said barrel.
• said slots 13 are formed by interruptions of the annular wall 17 of said shank 3.
• Said annular wall 17 is here defined by said branches 19 which are provided projecting from the shoulder 15.
• the distal end 11 of the shank 3 is defined by a distal end of said branches 19.
• Said drum 3 is advantageously provided with ribs 21 of reinforcement disposed in said channel 5 for circulation of the drum 3 between the branches 19.
• Said reinforcing ribs 21 are oriented, for example, along the direction of longitudinal extension D of said drum 3, in particular radially. They are here three in number and arranged in a star shape from the longitudinal direction of said channel 5. In this way, they divide said channel 5 into three subchannels for passing the cooling fluid.
• said duct 4 is, for example, flared to the right of said shank 3 to create a liner 12 for circulating said cooling fluid between said shank 3 and the wall 10 of said duct 4.
• said wall 10 of the duct 4 comprises, in particular at the level of said liner 12, an angular succession of ribs 14 and grooves 16 to limit the contact surface between the shank 3 and the component to cool.
• Said ribs 14 and / or groove 16 have at one of their longitudinal end a shoulder 20 coming opposite the shoulder 15 of the flange 1, said gasket 8 being disposed between said shoulders 15, 20.
• Said ribs 14 and / or grooves 16 are oriented, for example, in the longitudinal direction of the shaft 3. They may have a substantially trapezoidal shape, the large base of the ribs 14 being located at the same axial end of said sleeve 12 the small base of the grooves 16, and vice versa at the opposite end.
• said component may comprise a projecting portion 18 of the rest of its body 2 at which a mouth of said circulation duct 4 and / or said bores 6 are formed.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Exhaust-Gas Circulating Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (7)

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Family Cites Families (8)

• 2012
  • 2012-12-20 FR FR1262387A patent/FR3000135B1/fr not_active Expired - Fee Related
• 2013
  • 2013-12-16 WO PCT/FR2013/053101 patent/WO2014096661A1/fr active Application Filing
  • 2013-12-16 JP JP2015548710A patent/JP2016503138A/ja active Pending
  • 2013-12-16 US US14/653,619 patent/US20150308754A1/en not_active Abandoned
  • 2013-12-16 CN CN201380072526.4A patent/CN105026720A/zh active Pending
  • 2013-12-16 EP EP13818312.4A patent/EP2935824A1/fr not_active Withdrawn
  • 2013-12-16 KR KR1020157018304A patent/KR20150094708A/ko not_active Application Discontinuation

Non-Patent Citations (2)

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