Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
  • F02B29/04—Cooling of air intake supply
  • F02B29/0406—Layout of the intake air cooling or coolant circuit
  • F02B29/0418—Layout of the intake air cooling or coolant circuit the intake air cooler having a bypass or multiple flow paths within the heat exchanger to vary the effective heat transfer surface
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
  • F02B37/12—Control of the pumps
  • F02B37/22—Control of the pumps by varying cross-section of exhaust passages or air passages, e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits
  • F02B37/225—Control of the pumps by varying cross-section of exhaust passages or air passages, e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits air passages
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
  • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
  • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
  • F02B29/02—Other fluid-dynamic features of induction systems for improving quantity of charge
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
  • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
  • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
  • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
  • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
  • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
  • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
• • 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
• • 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
  • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
  • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
  • F02M26/23—Layout, e.g. schematics
  • F02M26/25—Layout, e.g. schematics with coolers having bypasses
• • 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
  • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
  • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
  • F02M26/23—Layout, e.g. schematics
  • F02M26/25—Layout, e.g. schematics with coolers having bypasses
  • F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
• • 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
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
  • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
  • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
  • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
  • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
  • F02D2009/0201—Arrangements; Control features; Details thereof
  • F02D2009/0279—Throttle valve control for intake system with two parallel air flow paths, each controlled by a throttle, e.g. a resilient flap disposed on a throttle
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
  • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
  • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
  • F02D9/1005—Details of the flap
  • F02D9/101—Special flap shapes, ribs, bores or the like
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/10—Internal combustion engine [ICE] based vehicles
  • Y02T10/12—Improving ICE efficiencies

Definitions

• the field of the present invention is that of automobi le and, more particularly, that of the equipment for the motor supply.
• a motor vehicle engine has a combustion chamber, generally formed by a plurality of cylinders, wherein a mixture of fuel and air is burned to generate the engine work.
• a metering device can thus vary the temperature of the intake fluid before it is introduced into the cylinders according to whether more fluid is sent through the path that passes through the cooler, the so-called cooled path, or through the path which bypasses it, so-called by-pass or uncooled path. In this way, the metering device makes it possible to manage both the quantity of fluid admitted to the cylinders and its temperature.
• this metering device was first made in the form of two single feeders, which receive instructions from the engine control computer and which more or less open their shutters with the aid of an actuator. enslaved in position. They also have the function of ensuring, on a specific command, stopping the engine, by positioning their shutters in the closed position, which chokes the engine. These devices have the drawbacks of implementing two components, requiring two servo systems with the associated connectors, which significantly increases their cost and complicates the dosing control system to ensure simultaneous two dosers.
• a first improvement has been made with the creation of double dosers that combine in one component the two components and the control of their positioning.
• Such a device is described in the patent application WO 2007125205 of the applicant, which shows a dual doser whose mechanism is actuated by a common motor.
• one of the flaps performs, in normal operation, a dosage of the intake fluid, the second flap remaining closed; in a secondary mode, the first flap is in the closed position while the second flap remains open.
• the object of the present invention is to remedy these drawbacks by proposing a double metering device for dosing a fluid of an internal combustion engine, said metering device comprising a body in which first and second circulation channels of said fluid are arranged. , in which first and second movable shutters are positioned for dosing the flow of fluid passing through said channels, said metering device further comprising an actuating motor for said flaps and a kinematics able to actuate the first flap and / or the second flap shutter in response to an actuation of said motor. Said flaps and / or said motor are movable and actuated, in particular, in rotation.
• the kinematics is shaped to ensure, on a first operating range, a dosing flow through the first output channel by actuating the first flap, the other flap being held in the open position.
• held in open position is meant in particular, maintained in full open position.
• the metering is accompanied by a temperature distribution function by distributing the flow between the two channels of the circuit. circuit from the first and second flow paths of the valve, this with an advantageous degree of accuracy.
• said kinematics is furthermore configured to ensure, over a second operating range, a proportional dosage on the two fluid circulation channels by simultaneous actuation of the two flaps, an increase in the flow rate on one of the fluid circulation channels being associated with a decrease; the flow on the other,
• the kinematics is configured to ensure a constant total flow rate in said second operating range
• said kinematics is furthermore configured to provide, on a third operating range, a metering of the flow rate passing through the second fluid circulation path by an actuation of the second flap, the other flap being kept in the open position,
• said kinematics is furthermore configured so as to provide, over a second operating range, a proportional dosage on the two fluid circulation channels by simultaneous actuation of the two flaps, an increase in flow on one of the fluid circulation paths being associated with an increase in the flow rate on the other,
• the kinematics is furthermore configured to ensure the same flow rate in each of the fluid circulation paths in said second operating range
• said kinematics is furthermore configured to provide, on a third operating range, a metering of the flow rate passing through the second circulation channel of said fluid by an actuation of the second flap, the other flap being kept in the closed position,
• the kinematics is configured so that a continuous rotation of the actuating motor leads successively said flaps to the first, the second and the third range or conversely,
• said kinematics is configured to be between said first and said second range or between said second and said third range, when the actuating motor is not activated.
• Only one of the operating ranges can correspond to an opening of the first shutter.
• the first flap can only open during one of the operating ranges, for example during the first operating range, or during the second operating range.
• the first flap may be stationary or close.
• the first pane opens during the first operating range, closes during the second operating range and remains open during the third operating range.
• the first component opens when it passes from a first position corresponding to a first fluid passage section in the first channel to a second position corresponding to a second fluid passage section in the first channel.
• first way, the second passage section being greater than the first passage section.
• the first section of passage can be null.
• the second passage section may be equal to the maximum passage section in the first track, the second position then corresponds to the full open position mentioned above.
• the first shutter closes during the first operating range, opens during the second operating range and remains closed during the third operating range.
• this displacement when one of the flaps moves during a range of operation, this displacement can be effected during said range between two extreme positions of the flap.
• this displacement when a flap moves during a range of operation, this displacement can be between the maximum open position taken by said flap according to the kinematics and the maximum closing position taken by said flap according to the kinematics, and vice versa.
• the maximum open position is for example, but not necessarily, the full open position mentioned above.
• the maximum closing position is for example, but not necessarily the position of complete closure of the track by the corresponding flap. In this case, moving a flap during an operating range does not prolong the movement of said flap during another operating range.
• the opening or closing of a shutter can exclusively take place within an operating range, contrary to what is for example taught in application WO 2007/089771 according to which the first component opens in part when a first operating range during which the second flap is immobile and partly during a second operating range during which the second flap closes.
• Said kinematics may comprise a disengaging element making it possible to leave one of the shutters fixed, in particular during one of said first or third operating ranges.
• the body comprises two cylindrical internal housings with a circular cross-section
• said first and second flaps comprise at least one shut-off portion arranged in a plane inclined with respect to said cylindrical housing and cooperating with the side wall of said housing by a circumferential peripheral generatrix, so as to ensure a sealed contact between said flaps and the body, in at least one of their angular positions.
• said closure portion of the flaps is shaped into a rotating disk whose peripheral edge constitutes the generatrix of contact with the lateral wall of the cylindrical housing, so as to ensure cylinder-to-cylinder contact,
• the closing part of the flaps forms an angle of 45 ° with the axis (A) of the cylindrical housing of the body
• said flaps comprise a control rod which is connected to the shutter part in order to drive it in rotation and which is disposed in the axis of said cylindrical housing passing through the center of said shutter portion; said rod and said closing part are made in one piece,
• the rod is mounted in a guide bearing integral with the body and / or is connected, at the output thereof, to said kinematics,
• each housing is coaxial and perpendicular to the axed inner cylindrical housing
• the fluid inlets and outlets are circular and the diameters thereof are smaller than the diameter of the disk of the closure portion cooperating with its edge with the side wall of the housing.
• the invention also relates to a device for supplying a heat engine, particularly a motor vehicle engine, with intake gas, said device comprising a metering device as described above.
• Said device may further comprise a track provided with a charge air cooler and a bypass path of said cooler, said first channel of the metering device being connected to said channel provided with the cooler and said second channel of the metering device being connected to said channel. bypass.
• the invention also relates to a device for recirculating the exhaust gas of a heat engine, especially a motor vehicle engine, comprising a metering device as described above.
• Said device may further comprise a channel provided with an exhaust gas cooler and a bypass path of said cooler, said first channel of the metering device being connected to said bypass and said second channel of the metering device being connected to said provided channel. cooler.
• FIG. 1 is a schematic view of a high pressure supply architecture of a turbocharged engine
• FIG. 2 is a schematic view of a low-pressure supply architecture of a turbocharged engine
• FIGS. 3a and 3b are representations of the evolution of the degree of opening of the first channel and the second channel, respectively, of a first embodiment of a double metering device according to the invention, this according to the position given to the shutters by the motor of the double doser,
• FIG. 4 is a representation of the distribution of the fluid, according to the position given to the shutters by the motor of the double doser, in the embodiment of FIGS. 3a and 3b,
• FIGS. 5a and 5b are representations of the evolution of the degree of opening of the first channel and the second channel, respectively, of a second embodiment of a dual metering device according to the invention, this according to the position given to the shutters by the motor of the double doser,
• FIG. 6 is a representation of the distribution of the fluid, according to the position given to the shutters by the motor of the double doser, in the embodiment of the embodiment of FIGS. 5a and 5b,
• FIG. 7 is a diagrammatic sectional view in elevation of an example of a dispenser according to the invention.
• FIG. 8 is a schematic sectional view along the line VIII-VIII of FIG. 7,
• FIG. 9 is a side view illustrating one of the housings of the double dispenser of FIG. 7,
• Figure 10 is a perspective view illustrating the interior of said housing
• Figure 1 1 is a perspective view illustrating the flap of said housing.
• FIG. 1 we see the air supply circuit of the cylinders 100 of a turbocharged internal combustion engine for a motor vehicle.
• the air taken from the outside, passes through an air filter 101 and is compressed by the compressor 102 of the turbocharger which sends it into a double doser, object of the invention.
• the body 1 of the double doser has an inlet channel through which the air from the compressor and two outlet channels through which the fluid flows downstream.
• I l receives orders for the determination of the air between these two channels, a calculator 103, said ECU for Electronic control unit or electronic control unit.
• the burnt gases are directed towards the exhaust system and pass into the turbine 104 of the turbocharger, which takes a part of their residual energy to drive the corresponding compressor 102. These exhaust gases then pass through a filter particulate and / or catalyst 105 before being ejected from the vehicle.
• part of the exhaust gas is recycled, via a high-pressure valve 106 located upstream of the turbine 104, into the fuel circuit. intake downstream of the junction of the two exit lanes.
• the kinematics is shaped to ensure, on a first operating range 30, that the flow through the first outlet channel 3 is actuated by actuation of the first component, the other component being kept in the open position.
• a double doser having an advantageous permeability.
• the kinematics is configured so that the degree of opening of the first channel 3 is maximum, the first flap being in the open full position, at the beginning of the range 30 and decreasing linearly to finish zero. end of range 30, the first flap being closed. Throughout this range 30, according to the invention, the second flap is full open position in the second channel 4.
• the kinematics is configured so that the degree of opening of the first channel 3 is minimum, the first flap being in the closed position, at the beginning of the range 30, and increases linearly to finish maximum at the end of the beach, the first flap being full open. Throughout this range, according to the invention, the second flap is full open position in the second channel 4.
• the rate is maximum in the second channel 4 and zero in the first channel 3 at the beginning of the range 30. It then evolves linearly in each of the channels 3, 4 to finish also shared between the two channels at the end of the range 30. There too, a constant flow is thus ensured through the valve which, according to the applications given below, a temperature adjustment, function of the distribution in each of the channels 3, 4, setting all the more end that it ends by an equal distribution at the end of the range 30.
• said kinematics may also be configured to ensure, on a second operating range 40, proportional dosing on the two channels 3, 4 by simultaneous actuation of two components, an increase in the flow on one of the output channels being associated with an increase in flow on the other.
• said kinematics is furthermore configured to ensure the same flow rate in each of the channels 3, 4, in said second operating range 40. In other words, in this second range 40, for any position of the first and second second shutters, the flow in each of the channels 3, 4 is the same.
• the first and second flaps are closed and they open progressively along said second range 40, according to the same degree of opening, to finish in the full position opening at the end of second range 40, which here corresponds to the beginning of said first range 30.
• Said kinematic may further be configured to provide a third operating range 50 a dosing flow through the second output channel 3 by actuating the second flap, the other flap being held in the closed position.
• the first flap is closed and the second flap is open.
• the second component then closes gradually to arrive in the closed position at the end of the third range 50, corresponding here to the beginning of the second range 40.
• said kinematics may also be configured to ensure, on a second operating range 40, proportional dosing on the two channels 3, 4 by simultaneous actuation of the two components, an increase in the flow on one of the output channels being associated with a decrease in flow on the other.
• said kinematics is furthermore configured to ensure a constant total flow rate in said second operating range 40. In other words, in this second range 40, for any position of the first and second flaps, when the flow rate increases. in one of the ways it diminishes in the other.
• the first flap is open and the second flap is closed.
• the first flap opens and the second closes, then progressively, during said second range 40.
• the first flap ends in the closed position while the second flap ends in the open position at the end of second range 40, which here corresponds to the beginning of said first range 30.
• Said kinematics may also be configured to provide a third operating range 50 a dosing flow according to the invention, that is to say, a dosing flow through the second channel 4 by actuating the second component, the other flap being held in the open position.
• the first flap and the second flap are open. While the first flap remains open, the second flap then closes gradually to arrive in the closed position at the end of the third range 50, corresponding here to the beginning of the second range 40.
• the kinematics is configured so that a continuous rotation of the actuating motor in a given direction acts successively on said flaps during the third, the second and the first operating range or vice versa.
• the flaps go from one of these beaches to another without an intermediate range.
• said flaps are here driven continuously over two successive ranges, namely the second and the first ranges for the first component and the third and second ranges for the second component.
• said kinematics is configured to be between said first and second ranges or between said second and said third range, when the actuating motor is not activated.
• the double dosing device comprises, as already mentioned, a body 1 in which are arranged a first 3 and a second 4 channels of circulation of said intake fluid, in which are positioned first 10 and second movable shutter shutters for controlling the flow rate through said channels.
• Said metering device further comprising an actuation motor, not shown, of said flaps 10, 20 and a kinematic 70, able to actuate the first flap 10 and / or the second flap 20 in response to an actuation of said engine.
• Said actuation motor and said flaps 10, 20 are for example rotatable.
• Said kinematic 70 which is not detailed, is configured so as to allow the realization of the control laws mentioned above by acting simultaneously on said first and second flaps 10, 20, as symbolized by the arrow marked 74. It may comprise, for example, gear wheels or the like connecting a pinion of the actuating motor to said first and second flaps 10, 20.
• Said kinematics may in particular comprise means for disengaging one of the flaps 10, 20 with respect to the other to ensure the dosing function on one of the tracks, the flap of the other path remaining fixed, in particular open. It may be cam-type means configured to drive one of the flaps 10, 20 over a given angular range, corresponding in particular to said first or third range, while the other is not. not.
• Said body 1 here comprises two cylindrical internal housings 204, 204 'with a circular cross-section, respectively accommodating said first flap 10 and said second flap 20. These latter comprise at least one shut-off portion 214 arranged in a plane inclined with respect to said housing cylindrical 204, 204 'and cooperating with the side wall 205 of said housing by a circular peripheral generatrix, so as to ensure a sealed contact between said flaps 1 0, 20 and the body 1, in at least one angular position of said first and second flaps 10, 20.
• each flap 10, 20 has been shown in two opposite symmetrical positions, open, one in solid lines, the other in dashed lines.
• the first flap 10 is shown in the closed position and the second flap 20 is shown in open position.
• Said valve 1 comprises, for example, an inlet duct 72 opening onto the first 3 and the second circulation lane 4 which lead here respectively to a first and a second outlet of the metering device.
• One of the 204 dwellings is planned along the first track 3 and the other 204 'along the second track 4.
• Said housing 204, 204' and their corresponding flap may be identical
• FIG. 9 to 1 there is shown one of them in Figures 9 to 1 1, in this case the housing 204 and said first flap 10.
• Said housing 204 can be likened to a bore.
• These inlet and outlet passages 206 and 206 are, for example, aligned with each other. They have here a longitudinal axis X perpendicularly intersecting the axis A of the housing 204, and have identical diameters.
• the internal cylindrical housing 204 is completely closed by a transverse bottom 209 at one of its ends, while at its opposite end there is a transverse cover 210.
• the latter is traversed by a flap 10 which cooperates with said kinematics, not shown, managed by a control unit known per se to drive in rotation about the axis A, said first flap 1 0 according to the control laws mentioned above.
• the inclined shutter portion 214 is shaped as an elliptical shutter 216, rotatable, centered on said axis A, so that its peripheral edge 217 is in constant contact with the side wall 205 of the housing 204 so as to isolate the passage of 206 and the outlet passage 207 or to put in fluid communication the inlet passage 6 and the outlet passage 207 with an adjustable flow rate, according to the angular opening given to the shutter door 10.
• This peripheral edge 217 thus constitutes a generator G always in sealing contact with the side wall 205 of the housing.
• inclined is meant strictly between 0 ° and 90 °.
• Shutter means a part having two surfaces inclined relative to the axis A and connected by the peripheral edge 217. The said inclined surfaces are optionally parallel to each other. The piece has a small thickness, namely a distance between said inclined surfaces much smaller than the diameter of the housing 4, in particular ten times lower. This is, for example, a rotating elliptical disc.
• Said inclined portion 214 has an elliptical shape of greater axis greater than the diameter of the circular housing 204 and minor axis substantially less than the diameter of the circular housing 204.
• the diameter of the circular housing 204 is also greater than the identical diameters of the passages input 206 and output 207 of fluid.
• Said first flap further comprises a connecting rod 215, here arranged along the axis A of the housing, so as to be centered on the inclined disc, with the angle B between the inclined plane of the disc and the axis A equal here at 45 °.
• the large axis of the disk 216 is substantially equal to the housing diameter multiplied by V2.
• This contact can be defined as being a cylinder / cylinder contact between the wall 205 of circular section of the housing 4 and the generator G corresponding to the peripheral edge 217 of the inclined disc 216 and which is circular in projection on a plane perpendicular to the axis of shutter rotation.
• the small axis of the flap 216 may be substantially greater than the diameter of the inlet passages 6 and outlet 207 of fluid.
• the rod 21 5 is associated, at one of its ends, with the d isq ue 21 6, by assembly or overmoulding, or it is formed with the disk, so as to have a one-piece sealing means 3.
• the disk 216 may be plastic and the rod 215 of metal or vice versa, or both may be plastic or metal according to the chosen monobloc or composite embodiment.
• the other end of the rod passes through the axial hole 212 of the body 1 to be connected to said kinematics. Said disengaging means make it possible, if necessary, to deactivate the driving of the rod 215 of one of the flaps 10, 20 during the actuation of the other.
• Such a valve therefore ensures sealing in both directions of closure by the adaptation of the inclined disc in the circular housing (cylinder-cylinder contact). Said disk can also be driven over 360 °. It can still, by its symmetry, be mounted indifferently in both directions without fooling in the body of the valve. In addition, since the edge of the disc moves linearly on the cylindrical wall, this makes it possible to prevent clogging between the disc and the wall and to ensure self-cleaning of the valve, which is beneficial when the latter is used for the circulation of recirculated exhaust gas.
• shutters can of course be considered such as spherical flaps or butterfly type flaps.
• the invention also relates to a supply device of a heat engine, including a motor vehicle engine, intake gas.
• the control law implemented in this application corresponds, for example, to that illustrated with reference to FIGS. 5a, 5b and 6.
• Said rest position corresponding to an absence of bias of the actuating motor of the flaps of the metering device, may himself find in the transition position between the second and the third range, that is to say, flap open on the first channel 3 of the metering device, corresponding to the cooled path 62 of the circuit, and shutter closed on the second channel 4 of the doser, corresponding to the uncooled path 64 of the circuit.
• Said third range 50 is described by a rotation of the second flap in a first direction from said rest position, the first flap remaining fixed by disengaging said kinematics. We then go from a cold temperature to an intermediate temperature by performing an assay in the second channel 4.
• the second range 40 is described by a rotation of the second flap, in the other direction, and by rotation of the first flap, to the beginning of the first range 30.
• the first flap closes while the other opens and then we move from a cold temperature to a hot temperature by performing a proportional dosage on both channels.
• the first range 30 is described by continuing the rotation of the first flap, in the same direction, the second flap remaining fixed by disengagement of said kinematics. We then go from a hot temperature to an intermediate temperature with a dosage of the first channel 3.
• the invention may also relate to a device for recirculating the exhaust gas of a heat engine, especially a motor vehicle engine, comprising a metering device as described above.
• Said device further comprises a channel mu nie an exhaust gas cooler and a bypass route of said cooler, said first channel of the metering device being connected to said bypass and said second metering device route being connected to said track equipped with cooler.
• control law implemented in this application corresponds, for example, to that illustrated with reference to FIGS. 3a, 3b and 4.
• Said rest position may be in the transition position between the second and the third range, the two shutters are then closed.
• Said third range 50 is described by a rotation of the second flap in a first direction from said rest position, the first flap remaining fixed by disengaging said kinematics. In this way, the cooled lane is opened and a recirculated exhaust gas, totally cooled, is dosed.
• the second range 40 is described by a rotation of the second flap, in the other direction, and by rotation of the first flap, to the beginning of the first range 30.
• the two flaps then open simultaneously and we go from one cold temperature at a temperature hot by performing a proportional dosage on both channels which allows to have a dosage of EGR at an intermediate temperature.
• the first range 30 is described by continuing the rotation of the first flap, in the same direction, the second flap remaining fixed by disengagement of said kinematics.
• the first channel or non-cooled channel 3 is thus dosed, which corresponds to a cooling of the EGRs from said intermediate temperature.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Exhaust-Gas Circulating Devices (AREA)
• Electrically Driven Valve-Operating Means (AREA)
• Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
• Lift Valve (AREA)
• Multiple-Way Valves (AREA)

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• 2012
  • 2012-05-15 FR FR1254437A patent/FR2990726B1/fr active Active
• 2013
  • 2013-05-13 WO PCT/FR2013/051039 patent/WO2013171413A1/fr active Application Filing
  • 2013-05-13 CN CN201380036197.8A patent/CN104411961B/zh not_active Expired - Fee Related
  • 2013-05-13 KR KR20147034960A patent/KR20150014964A/ko not_active Application Discontinuation
  • 2013-05-13 JP JP2015512102A patent/JP6258300B2/ja not_active Expired - Fee Related
  • 2013-05-13 EP EP13727277.9A patent/EP2855911A1/de not_active Withdrawn
  • 2013-05-13 US US14/401,152 patent/US20150122221A1/en not_active Abandoned

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