EP3237743A1 - Module d'alimentation pour moteur a combustion, comportant un canal de refroidissement - Google Patents
Module d'alimentation pour moteur a combustion, comportant un canal de refroidissementInfo
- Publication number
- EP3237743A1 EP3237743A1 EP15830813.0A EP15830813A EP3237743A1 EP 3237743 A1 EP3237743 A1 EP 3237743A1 EP 15830813 A EP15830813 A EP 15830813A EP 3237743 A1 EP3237743 A1 EP 3237743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- valve
- cooling
- module
- interface piece
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
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- 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
- F02D9/1035—Details of the valve housing
-
- 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
- F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10268—Heating, cooling or thermal insulating means
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- 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
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
Definitions
- the present invention relates to a gas supply module for a combustion engine, more particularly for a motor vehicle.
- the power supply of an internal combustion engine requires the routing of different gas flows to the engine.
- One of these flows consists essentially of fresh air, intended to ensure fuel combustion.
- Another of these flows is gas
- the recirculation of a portion of the exhaust gas to the engine intake is a conventional technique to reduce the production of nitrogen oxides.
- the intake air is compressed before being admitted into the engine, for example by a centrifugal compressor driven by the exhaust gas.
- the valves regulating the flow of the different gas flows are subjected to a high temperature, which can be problematic for the reliability of some of their components, such as the electric motor operating their shutter. . It is thus known to cool these metering valves by circulating in their structure a portion of the coolant circulating in the engine.
- connection to the engine cooling circuit is made by hoses connecting the dosing members to the engine.
- hoses connecting the dosing members to the engine.
- These hoses require the addition of pipettes and connection clamps, which increase the size and the price of the solution, and lengthen the assembly time.
- the invention seeks to overcome the aforementioned drawbacks.
- the invention proposes a gas supply module for a combustion engine, this module comprising:
- an interface piece configured to be assembled on a cylinder head of the engine, the interface piece comprising a channel arranged to carry a cooling fluid
- this valve comprising:
- valve body having a path for conveying a hot gas, a component exposed to the heat released by the hot gas flowing in the path,
- a channel arranged to carry a cooling fluid for cooling the component this channel being formed with the valve body, the cooling channel of the valve being connected to the cooling channel of the interface piece.
- the cooling channel arranged in the valve makes it possible to cool the most fragile components of the valve and thus improve their reliability.
- the cooling channels being interconnected, it is possible to circulate a cooling fluid throughout the device.
- the cooling channel of the valve comprises a connection end arranged to be connected to a connection end of the channel of the interface piece, the connection ends being opposite one another.
- the cooling channels each comprise an end portion adjacent to the connection end, these end portions being aligned.
- the section of the connection end of the valve is identical to that of the interface piece.
- the alignment of the end portions, as well as the equality of the passage sections, make it possible to minimize the disturbances of the flow of the cooling fluid and thus to minimize the pressure drops in the module.
- the gas supply module comprises a second gas supply valve for a combustion engine, this second valve comprising:
- valve body having a path for conveying a hot gas, a component exposed to the heat generated by the hot gas flowing in the path, a channel arranged to carry a cooling fluid for cooling the component, this channel being formed with the body valve (14,13).
- the circulation of cooling fluid also takes place in the second valve, in order to reduce the temperature of its most fragile components.
- the cooling channel of the second valve is connected to the cooling channel of the first valve.
- the cooling fluid passing through the first valve then passes through the second valve to cool it as well.
- This type of traffic is usually called "serial".
- the cooling channel of the second valve is connected to the channel of the first valve directly, in particular with the interposition of a seal between the two connecting ends of the two channels.
- the cooling channel of the second valve is connected to the channel of the first valve via a part
- intermediate defining an intermediate channel having a length greater than 5 millimeters.
- the role of this intermediate piece is to allow the circulation of the cooling fluid from one valve to the other when the two valves are not in contact with one another. Indeed, the constraints of space available under the hood can lead to move the two valves away from each other.
- the intermediate channel is formed on the interface piece.
- the two valves are interconnected, and the interface piece serving to support the two valves serves as a further connecting channel. This produces a circulation of cooling fluid in the two valves without using hoses.
- one of the valves carries exhaust gas.
- the exhaust gases passing through the valve generally called EGR valve (English, Exhaust Gas Recirculation), are recirculated to the engine intake. This in particular makes it possible to reduce the amount of nitrogen oxides formed for a diesel engine and to reduce the tendency to rattle for a gasoline engine.
- the valve is used to precisely control the amount of recirculated gas.
- one of the valves carries a gaseous mixture coming from a supercharging device.
- the valve generally known as a metering device or throttle body, makes it possible to adjust the amount of combustion air admitted into the engine.
- the valve component exposed to heat is an electric motor of the valve.
- the electric motor is subjected to the heat of the gases passing through the valve, and dissipates itself heat because of the electric power released. These two factors combine and expose the constituents of the electric motor to a very high temperature.
- the component of the valve exposed to heat is a position sensor of the valve.
- the valve position sensor contains electronic components that also have a recommended maximum temperature of use.
- the component of the valve exposed to heat is a pressure sensor of the valve.
- the pressure sensor contains electronic components that also have a maximum recommended temperature of use.
- the pressure sensor measures the pressure of the fluid transported by the valve.
- the measurement of the pressure of the gases passing through the valve, where the pressure difference in the gas flow between the inlet and the outlet of the valve makes it possible to determine the flow rate passing through the valve.
- the cooling channel of the interface piece comprises a connection end arranged to be connected to a connection end of a channel of the motor yoke, the connection ends being in contact with each other. look at each other.
- the cooling channel of the interface piece comprises a second connection end arranged to be connected to a connection end of a channel of the motor yoke, the connection ends being opposite from each other, and the cooling fluid flows from one end of the connection of the cooling channel of the interface piece to the other.
- the supply of the cooling fluid module is done directly by the cylinder head. Coolant circulation can be completely integrated.
- the cooling fluid of the interface piece feeds a heat exchanger. As the fluid passing through the module becomes heated in contact with the members to be cooled, it may be useful to add a heat exchanger to it to control the temperature of the cooling fluid.
- the cooling channel of the interface piece is made in one piece with the interface piece. This avoids having an assembly to be made on the vehicle.
- the cooling channel of the interface piece is made by molding with the interface piece.
- the channel is thus made in the thickness of the wall.
- the cooling channel of the interface piece is an insert on the interface piece being in contact with the interface piece over at least a portion of the length of the channel.
- the embodiment of the channel in the form of an insert may be necessary when it is desired to make an interface part with very thin walls. It is difficult to integrate a channel without unduly weakening the structure.
- the channel of the interface piece is metallic. This gives good thermal conductivity and good mechanical strength.
- the channel of the interface piece is welded, brazed, glued, fitted on the interface piece.
- the method is to be chosen by these different options depending on the geometry of the parts, the material of the interface piece and the quantities to be produced.
- the cooling channel of the valve is made in one piece with the valve body.
- the cooling channel of the valve is made by molding with the valve body. The channel can thus be made closer to the areas to be cooled and have the best efficiency.
- the cooling channel of the valve is an insert on the valve body being in contact with the valve body over at least a portion of the length of the channel.
- the channel of the valve is metallic.
- valve channel is welded, brazed, glued, fitted on the valve body.
- cooling channel of the interface piece this solution will be used if the desired geometry is too complex for a casting part.
- the module comprises a heat exchanger configured to transfer heat between the gaseous mixture leaving a cooling device. supercharging and the air surrounding the exchanger. Cooling the charge air increases the density of the air. It is advantageous to integrate the charge air cooler into the module, in order to group the maximum number of components.
- Some exchangers are of air-air type, that is to say that the fluid for the removal of heat is the air surrounding the heat exchanger.
- the module comprises a heat exchanger configured to transfer heat between the gas mixture leaving a supercharging device and a cooling fluid circulating in the exchanger. It is advantageous to use a circulation of liquid for the removal of heat, such as the engine coolant. Since the heat capacity of this liquid is much higher than that of air, the heat exchanger can be more compact.
- the supercharging device comprises a centrifugal compressor.
- the increase in the pressure of the combustion air is obtained by setting it in speed by the centrifugal compressor, followed by a slowing down by increasing the section of passage of the gases.
- the centrifugal compressor is driven by an electric motor.
- Most of the supercharging devices are driven by a turbine recovering a portion of the energy of the engine exhaust gases.
- compressors are driven exclusively by an electric motor, without recourse to the recovery of a part of the energy of the exhaust gases.
- the air heat exchanger of the module the air heat exchanger of the module
- the control temperature can thus be best adapted to each of the cooling needs.
- the module comprises a temperature sensor of the fluid passing through the valve, the temperature sensor being fixed on the interface piece and the channel of the interface piece is arranged to cool the sensor.
- the channel formed in the interface piece can be used to cool a component disposed on the interface piece.
- the module comprises a fluid pressure sensor passing through the valve, the pressure sensor being fixed on the interface piece and the channel of the interface piece being arranged to cool the sensor.
- the channel formed in the interface piece serves to cool a component disposed on the interface piece, in addition to allowing the transport of the cooling fluid from one valve to the other.
- the interface piece is monobloc.
- the interface piece consists of an assembly of 2 pieces.
- the interface piece is metallic. This allows good mechanical strength as well as good resistance to high temperatures.
- the interface piece is formed by casting. This process makes it possible to obtain complex shapes economically. If necessary, the interface piece is formed of two halves assembled together, in order to simplify the production of each of the two pieces.
- the module comprises a pump for circulating the cooling liquid in the channel of the interface piece.
- This pump allows a circulation of coolant even when the engine does not power the module, for example when the engine is stopped.
- the invention also relates to an air intake system
- FIG. 1 to 3 show schematically an air intake system of an internal combustion engine according to various embodiments of the invention.
- FIG. 4 is a diagrammatic partial view, in section, of interconnected cooling channels of the system of FIG. 3.
- FIG. 1 shows an air intake system 70 comprising:
- a supercharging device 71 arranged to supply the gas module.
- the intake module 100 comprises all the components necessary to supply the combustion air supply of an internal combustion engine.
- the module is arranged to be ready to mount on the combustion engine.
- the intake module 100 makes it possible to introduce into the combustion engine the different gas flows necessary for combustion.
- the main are the combustion air and the fraction of exhaust gas recirculated to the intake of the engine.
- the amount of combustion air, the amount of recirculated exhaust gas can be adjusted by means of valves for modulating the flow therethrough.
- the physical properties of the gas mixture such as its pressure and temperature, are measured, possibly at different points in the gas flow.
- the combustion air is compressed before being admitted into the engine, it is called supercharged engine. This increases the amount of combustion air introduced into the engine, and therefore also the amount of energy that can be released by the combustion of the fuel.
- the supercharging thus increases the performance of the engine.
- the compression of the air before admission to the engine has the effect of heating the air and reduce its density, so it is desirable to cool. Similarly, it may be desirable to cool the recirculated exhaust gas. Thus, all or part of the different gas flows will be cooled in the intake module.
- FIG 1 shows schematically the different gas flows into and out of the engine.
- the outside air 30 enters an air inlet 28. It mixes with the stream 43 of recirculated exhaust gas according to the so-called "low pressure" architecture. These gases exhaust are drawn downstream of a depollution device 8 to reduce the amount of pollutants formed.
- the flow of recirculated gas is regulated by a valve 27.
- This mixture is then compressed by a compressor 2.
- the flow 31 is conveyed to the throttle body 3, which will regulate the flow rate of flow 32.
- the flow 32 enters a heat exchanger 4 to be cooled, then comes out to enter an interface room 5.
- the interface piece 5 also receives a "high pressure" recirculated exhaust gas stream, that is to say leaving the motor in the form of the stream 40, which is cooled in a heat exchanger 10, to form the flow 41 which enters a metering valve 11.
- the metering valve 11 will regulate the output flow flow 42.
- the flow 42 of recirculated exhaust gas "high pressure” enters the interface piece 5 where it y joins the combustion air flow described in the previous paragraph and shown schematically by the set of flows 33.
- the mixture obtained, schematized by the stream 34 is distributed to supply each cylinder of the engine.
- Flow 35 schematizes the gas mixture admitted into each of the engine cylinders.
- the invention thus comprises a gas supply module 100 for a combustion engine, this module comprising an interface piece 5 configured to be assembled on a cylinder head 1 of the engine, the interface piece comprising a channel 51, 53 , 55 arranged to carry a cooling fluid, a gas supply valve 3,11 for a combustion engine, this valve comprising a valve body 13,14 having a path for conveying a hot gas, a component 21,22 Exposed to the heat generated by the hot gas flowing in the channel, a channel 52, 54 arranged to carry a cooling fluid for cooling the component, said channel 52, 54 being formed with the valve body 13, 14, the cooling channel 52,54 of the valve 3,11 being connected to the cooling channel 51,53,55 of the interface part 5.
- the valve consists of a valve body 13,14, a rotary flap 20,25 which allows to adjust the flow rate through the valve by varying its opening angle.
- An electric motor 21, 26 makes it possible to control the opening and closing of the valve 13, 14.
- One or more position sensors 22 make it possible to ensure a closed-loop control of the position of the flap, this steering of the position of the flap being ensured by the engine control computer.
- the valve structure described above concerns both the valve regulating the flow of combustion air and that regulating the flow of recirculated exhaust gas.
- the recirculated exhaust gas can be very hot, for example a temperature greater than 500 °.
- This flow of hot gases heats the valve body as well as all components attached to the valve body. Some of them, such as the electric motor or the electronic circuit of the position sensor, can thus be brought to a temperature close to their temperature limit of use.
- This temperature limit of use depends on the technologies employed, but it is generally much more expensive to use a component with an increased use limit rather than a standard component. It is therefore useful to be able to cool the valve to reduce the temperature of the most fragile components.
- a cooling channel arranged in the valve makes it possible to cool the most fragile components of the valve and thus to improve their reliability. This channel is placed in communication with a channel arranged in the interface piece 5.
- the thermal stresses are similar. Indeed, a strong compression of the air can bring the temperature of the air up to more than 200 °.
- the combustion air also contains recirculated exhaust gas, which also increases the temperature of the mixture. Indeed, in the so-called "low pressure" architecture, a portion of the exhaust gas is reintroduced into the engine upstream of the supercharging device. Therefore, the components of the throttle body can also be operated at a temperature near or above their temperature limit of use.
- the cooling channel 52 of the valve 3 has a connection end 60 arranged to be connected to a connection end 61 of the channel 51 of the interface piece 5, the connection ends 60, 61 facing each other.
- the connection between the channels is thus direct without resorting to a hose extension type.
- the cooling channels 51, 52 each comprise an end portion 63, 62 adjacent to the connecting end 61, 60, these end portions 63, 62 being aligned.
- connection end 60 of the valve 3 is identical to that of the interface piece 5.
- FIG. 1 shows that the gas supply module comprises a second gas supply valve 11, for a combustion engine, this second valve 11, 3 comprising a valve body 14, comprising a channel for transporting a hot gas, a component 26,21,22 exposed to the heat released by the hot gas flowing in the channel, a channel 54,52 arranged to carry a cooling fluid to cool the component 26,21,22, this channel 54 52 being formed with the valve body 14,13.
- the second valve, 11, here is the high pressure exhaust gas recirculation valve. "High pressure" means recirculation in the intake manifold.
- cooling channel 54, 52 of the second valve 11, 3 is connected to the cooling channel 52, 54 of the first valve 3, 11.
- the cooling fluid passing through the first valve then passes through the second valve to cool it as well.
- This type of traffic is usually called "serial".
- the cooling fluid leaving the channel 50 of the cylinder head 1 of the motor passes through the valve 3 and returns to the cylinder head.
- the cooling fluid leaving the channel 50 of the cylinder head 1 passes through the valve 11 and returns to the cylinder head.
- This type of traffic is usually called "in parallel”.
- the cooling channel 54, 52 of the second valve 11, 3 is connected to the channel 52, 54 of the first valve 3, 11 directly, in particular with the interposition of a seal 12 between the two connection ends of the two channels 54,52. The connection is made without any intermediate part, with the exception of the seal
- the cooling channel 54, 52 of the second valve 11, 3 is connected to the channel 52, 54 of the first valve 3, 11 via an intermediate part defining an intermediate channel 53 having a length greater than 5 millimeters. More specifically, the intermediate channel 53 is formed on the interface piece 5.
- the two valves are interconnected, and the interface piece which carries the two valves serves as more connecting channel. This produces a circulation of cooling fluid in the two valves without using hoses.
- one of the valves 3,11 carries a gaseous mixture from a supercharging device and makes it possible to adjust the quantity of combustion air admitted to the engine.
- the component of the valve 3,11 exposed to heat is an electric motor 21,26 of the valve.
- the electric motor is subjected to the heat of the gases passing through the valve, and dissipates itself heat because of the electric power released.
- the copper wire constituting the motor winding is covered with an organic insulating varnish. This varnish must not be subjected to a temperature higher than the maximum recommended, otherwise it may be damaged, ultimately leading to defects in the electric motor.
- Another sensitive component of the heat-exposed valve is a position sensor 22 of the valve 3.
- the valve position sensor contains electronic components that also have a recommended maximum temperature of use.
- the component of the valve exposed to heat is a pressure sensor of the valve 11.
- the pressure sensor contains electronic components which also have a maximum recommended temperature of use.
- the pressure sensor measures the pressure of the fluid transported by the valve.
- the measurement of the pressure of the gases passing through the valve is used to estimate the flow rate of gas passing through the valve.
- the gas flow between the inlet and the outlet of the valve can also be used to determine the flow rate through the valve.
- the cooling channel 51, 55 of the interface part 5 comprises a connection end arranged to be connected to a connecting end of a channel 50, 56 of the cylinder head 1 of the motor, the connection ends facing each other.
- the cooling channel 55,51 of the interface part 5 comprises a second connection end arranged to be connected to a connection end 56,50 of a channel of the cylinder head 1 of the engine, the connection ends being facing each other, and the cooling fluid flowing from a connecting end of the cooling channel 51,55 of the interface piece 5 to the other.
- the supply of the cooling fluid module is done directly by the cylinder head. Coolant circulation can be completely integrated.
- Cooling of the interface piece feeds a heat exchanger.
- the fluid passing through the module heating up in contact with the organs to be cooled, it may be useful to him add a heat exchanger to control the temperature of the coolant.
- the cooling channel 51,53,55 of the interface part 5 is made in one piece with the interface part 5. This avoids having an assembly to be made on the vehicle .
- the cooling channel 51,53,55 of the interface piece 5 is made by molding with the interface piece 5.
- the channel is thus made in the thickness of the wall. The insertion of pins to the molding allows to create a recess, some sections will be machined and some orifices necessary for the passage of the machining tools will be rebouched.
- the cooling channel 51,53,55 of the interface piece 5 is made by molding with the interface piece 5.
- the channel is thus made in the thickness of the wall.
- the insertion of pins to the molding allows to create a recess, some sections will be machined and some orifices necessary for the passage of the machining tools will be rebouched.
- the cooling channel 51,53,55 of the interface piece 5 is made by molding with the interface piece 5.
- the channel is thus made in the thickness of the wall. The insertion of pins to the molding allows to create a recess, some sections will be machined and some orifices necessary for the passage of the machining tools will be rebouched.
- the interface piece 5 is an insert on the interface piece 5 being in contact with the interface part 5 on at least a portion of the length of the channel 51,53,55.
- the embodiment of the channel in the form of an insert may be necessary when it is desired to make an interface part with very thin walls. It is difficult to integrate a channel without unduly weakening the structure. In addition, thin walls have higher risks of porosity.
- the channel 51,53,55 of the interface piece 5 is metallic. This gives good thermal conductivity and good mechanical strength.
- the channel 51,53,55 of the interface piece 5 is welded, or brazed, or glued, or fitted on the interface piece 5.
- the method is to be chosen by these different options depending the geometry of the pieces, the material of the interface piece and the quantities to be produced.
- the cooling channel 52, 54 of the valve 3, 11 is made in one piece with the valve body 13, 14.
- the channel 52, 54 for cooling the valve 3, 11 is made by molding with the valve body 13, 14. The channel can thus be made closer to the areas to be cooled and have the best efficiency.
- the cooling channel 52, 54 of the valve 3, 11 is an insert on the valve body 13, 14 in contact with the valve body on at least a portion of the length of the channel 52, 54. This solution can be interesting if the geometry of the cooling channel is too complex to be obtained by a casting process.
- the channel 52,54 of the valve 3,11 is metallic.
- the channel 52, 54 of the valve 3, 11 is welded, or brazed, or glued, or fitted on the valve body.
- this solution will be used if the desired geometry is too complex for a casting part.
- the module 100 comprises a heat exchanger configured to transfer heat between the gas mixture 32 leaving a supercharging device 71 and the air surrounding the exchanger. The cooling of the air
- the module comprises a heat exchanger 4 configured to transfer heat between the gas mixture 32 leaving a supercharging device 71 and a cooling fluid circulating in the exchanger 4. It is advantageous to use a liquid circulation for heat removal, such as the engine coolant. The heat capacity of this liquid being much higher than that of air, the heat exchanger can be more compact while ensuring better efficiency than an air-to-air heat exchanger.
- the supercharging device 71 comprises a centrifugal compressor 2. The increase in the pressure of the combustion air is obtained by its setting speed by the centrifugal compressor, followed by a slowdown by increase of the section of passage of gases.
- the centrifugal compressor 2 is driven by an electric motor.
- This type of compressor can replace a turbo-compressor or be used in addition.
- the electric compressor may be, depending on the case, located upstream or downstream of the turbo-compressor.
- the charge air heat exchanger carries a cooling fluid that is distinct from the coolant transported by the interface piece 5.
- the regulation temperature can thus be adapted as best as possible to each cooling needs.
- the coolant enters the charge air exchanger at the inlet 57 and exits at the outlet 58.
- the module 100 comprises a temperature sensor 23 of the fluid flowing through the valve, the temperature sensor 23 being fixed on the interface piece 5 and the channel 51, 53, 55 of the piece
- the interface is arranged to cool the sensor 23.
- the channel formed in the interface piece is not only used to make the connection between the two valves, which are the main components needing cooling.
- the channel may also serve to cool a component disposed on the interface piece.
- the module 100 comprises a pressure sensor 24 of the fluid passing through the valve, the pressure sensor 24 being fixed on the interface part 5 and the channel 51,53,55 of the workpiece interface being arranged to cool the sensor 24.
- the channel formed in the interface piece is used to cool a component disposed on the interface piece, in addition to allowing the transport of the cooling fluid from one valve to the other.
- the interface piece 5 is in one piece.
- the interface piece consists of an assembly of two pieces.
- the interface piece is metallic.
- the interface piece is formed by casting.
- the module comprises a pump 49 ensuring the circulation of the cooling liquid in the channel 51, 53, 55 of the interface piece.
- This pump allows a circulation of coolant even when the engine does not power the module, for example when the engine is stopped.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1463037A FR3030637B1 (fr) | 2014-12-22 | 2014-12-22 | Module d'alimentation pour moteur a combustion, comportant un canal de refroidissement |
| PCT/FR2015/053677 WO2016102862A1 (fr) | 2014-12-22 | 2015-12-21 | Module d'alimentation pour moteur a combustion, comportant un canal de refroidissement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3237743A1 true EP3237743A1 (fr) | 2017-11-01 |
Family
ID=53059203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15830813.0A Withdrawn EP3237743A1 (fr) | 2014-12-22 | 2015-12-21 | Module d'alimentation pour moteur a combustion, comportant un canal de refroidissement |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3237743A1 (fr) |
| FR (1) | FR3030637B1 (fr) |
| WO (1) | WO2016102862A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3544269B2 (ja) * | 1996-06-18 | 2004-07-21 | 日野自動車株式会社 | エンジンのegr装置 |
| US6237547B1 (en) * | 1998-09-10 | 2001-05-29 | Yamaha Hatsudoki Kabushiki Kaisha | Engine cooling arrangement |
| DE10228247B4 (de) * | 2002-06-25 | 2014-05-15 | Pierburg Gmbh | Luftansaugkanalsystem |
| ES2276904T5 (es) * | 2002-12-06 | 2011-02-03 | Renault S.A.S. | Recirculación de gases de escape. |
| DE102005012759A1 (de) * | 2005-03-19 | 2006-10-12 | GM Global Technology Operations, Inc., Detroit | Thermostatventil mit integriertem AGR-Ventil |
| FR2908833B1 (fr) * | 2006-11-20 | 2011-06-17 | Valeo Sys Controle Moteur Sas | Dispositif d'admission de gaz |
| FR2954414B1 (fr) * | 2009-12-21 | 2013-09-13 | Valeo Systemes Thermiques | Piece d'interface entre une culasse d'un moteur de vehicule automobile et un echangeur de chaleur. |
-
2014
- 2014-12-22 FR FR1463037A patent/FR3030637B1/fr active Active
-
2015
- 2015-12-21 EP EP15830813.0A patent/EP3237743A1/fr not_active Withdrawn
- 2015-12-21 WO PCT/FR2015/053677 patent/WO2016102862A1/fr not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2016102862A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3030637B1 (fr) | 2018-02-16 |
| WO2016102862A1 (fr) | 2016-06-30 |
| FR3030637A1 (fr) | 2016-06-24 |
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