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
  • 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
  • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
• • 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
  • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
  • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system
• • 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
  • F02M26/52—Systems for actuating EGR valves
  • F02M26/64—Systems for actuating EGR valves the EGR valve being operated together with an intake air throttle
• • 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
  • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
  • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
  • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
  • F16K11/052—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves
  • F16K11/0525—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves the closure members being pivoted around an essentially central axis
• • 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
  • F02M26/52—Systems for actuating EGR valves
  • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
  • F02M26/54—Rotary actuators, e.g. step motors
• • 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
  • F02M26/71—Multi-way valves

Definitions

• Valve having actuating means between two inlet ducts
• the present invention relates to a valve for an internal combustion engine, and more particularly to a valve comprising two inlets and a fluid outlet.
• bypass valve type valves bypass in English terminology
• metering each having a function
• Their purpose is to manage the flow of fluids circulating in the conduits supplying the engine, or at the output of the engine.
• the exhaust gas recirculation and back-pressure functions are performed with two separate valves or with a valve with two flaps.
• the valve or valves are disposed downstream of the combustion engine. It is thus possible to allow the recirculation of a certain amount of exhaust gas upstream of the engine.
• a difficulty with this type of valves lies in the cost and bulk. In addition being out of the engine where the temperatures are very high requires the use of specific materials which further increases the cost and complexity of architectures using such valves. Indeed, it is also necessary to use a cooling circuit.
• the present invention therefore aims to overcome one or more of the disadvantages of valves and architecture of the prior art by providing an improved valve.
• the present invention proposes a valve comprising a body delimiting two fluid inlet ducts opening into an outlet duct of the fluid forming an intersection in which is mounted a throttle connected to a throttle actuating motor between a first position. extreme in which the throttle allows the entry of air and directs the air mainly to the outlet duct, towards the engine, and a second extreme position in which the butterfly allows air inlet and recirculation gas and directs the fluid mainly to the outlet duct.
• Such a valve has several advantages. It makes it possible to regulate the rate of recirculated gases. It allows to be positioned upstream of the engine and thus to be exposed to lower temperatures than the prior art. It is thus possible to use less noble materials and avoids thermal stresses with respect to the valves arranged at the output of the motor as in the prior art. Such a valve avoids the use of a cooling circuit.
• the butterfly in its first extreme position, has a portion for closing the inlet duct of the recirculation gas and a portion partially closing the fluid outlet duct.
• the butterfly in its second extreme position, has a portion positioned to allow the recirculation gases to enter via the fluid inlet duct and a portion positioned to admit a certain amount of air via the fluid inlet duct.
• the part has a free edge bearing against a wall common to the two inlet ducts.
• the part has an edge bearing against a wall common to the inlet duct of the recirculation gas and the fluid outlet duct.
• the invention also relates to an engine assembly comprising at least one intake duct, a combustion engine and a valve according to the invention, disposed on the intake duct upstream of the engine.
• the engine assembly comprises an exhaust system at the output of the engine and an exhaust gas recirculation loop, the recirculation loop allowing a portion of the gases to be exhausted. exhaust circulating in the exhaust circuit to be reinjected upstream of the engine.
• the recirculation loop comprises an outlet opening into a second fluid inlet duct of the valve.
• a first inlet duct of the valve is connected to the part of the intake duct situated upstream of the valve and an outlet duct is connected to the part of the intake duct downstream of the valve. valve.
• the invention also relates to a motor vehicle equipped with an engine assembly according to the invention.
• FIG. 1 is a schematic representation of an engine assembly incorporating a valve according to the invention
• FIG. 1 is a sectional view of the valve according to the invention.
• valve 1 is here intended to be arranged upstream of the combustion engine 9.
• the invention thus relates to a valve 1 and a motor assembly 100 comprising a valve according to the invention.
• the valve 1 used in the context of the invention comprises a body 2 delimiting two fluid inlet ducts 3, 4 opening into a fluid outlet duct 5 forming an intersection 6.
• the body 2 is made in one or more parts.
• the valve is made of aluminum.
• the valve is made of stainless steel.
• a first fluid inlet duct 4 is configured to receive air from the air intake duct 101, represented by the arrow El.
• a second fluid inlet duct 3 is configured to receive the gases exhaust from the engine 9, represented by the arrow E2. This second inlet conduit 3 allows, in combination with a recirculating gas circulation duct, the recirculation of the exhaust gas.
• the fluid outlet duct 5 opens upstream of the engine 9.
• This fluid outlet duct 5 is configured to allow air or a mixture of air and recirculation gas to be introduced into the engine 9. represented by the arrow E3.
• these three ducts 3, 4, 5 each comprise fixing means on the air intake duct 101 of the engine 9.
• a throttle valve 10 At the intersection 6 is mounted a throttle valve 10.
• this throttle is actuated by an actuating motor 7 arranged in a housing 8.
• the engine 7 is a DC electric motor .
• the butterfly 10 is rotated about an axis 11.
• the shaft 11 is connected to the output shaft of the actuating motor 7 by transmission means of conventional type, and for example gears or at least one cam , mounted on the housing 8.
• the throttle valve 10 is arranged and configured to be movable between a first end position in which the throttle valve 10 only allows the entry of air and directs the air mainly to the outlet pipe 5, towards the engine 9, and a second extreme position in which the throttle valve 10 allows an air inlet and recirculation gas and directs the recirculation air / gas mixture mainly to the outlet duct 5.
• the butterfly 10 In its first extreme position, the butterfly 10 has a portion 10.1 for closing the inlet duct 3 of the recirculation gas and a portion 10.2 for the passage of air via the fluid inlet duct 4.
• Part 10.2 has a free edge resting against a wall 14 common to the two ducts 3, 4.
• Part 10.1 has an edge bearing against a wall 12 common to the inlet duct 3 of the recirculation gases and to the outlet duct 5 air or mixture.
• the butterfly 10 In its second extreme position, the butterfly 10 has its portion 10.1 positioned so as to let the recirculation gases via the fluid inlet duct 3 and its part 10.2 positioned to allow a certain amount of air to enter via the fluid inlet duct 4.
• valve 1 makes it possible to circulate the air admitted to the engine, mixed or not with recirculated exhaust gas.
• the valve 1 comprises an element
• this element 13 for recovering oil vapors from an engine crankcase.
• this element 13 is a recovery conduit 13 opening into the fluid outlet duct 5. More precisely, this recovery duct 13 opens upstream of the outlet 51 of the outlet duct 5.
• the motor assembly 100 concerned by the present invention comprises at least one intake duct 101, 10, a motor vehicle internal combustion heat engine 9 and a valve 1 according to the invention. .
• This engine 9 comprises a combustion chamber 39 comprising a plurality of cylinders, not illustrated, for example four in number, intended to receive a mixture of oxidant and fuel, and for example gasoline or diesel fuel and fuel. clean air or a recirculating air / gas mixture as an oxidizer.
• the combustion in the cylinders generates the work of the engine 9.
• the operation of the engine 9 is conventional: the gases are admitted into the combustion chamber, are compressed, burned and expelled in the form of exhaust gas.
• This engine 9 has an inlet 91 connected to the intake duct 101 and an outlet 92 connected to a gas exhaust circuit 102.
• intake duct 101 is meant the inlet duct for the intake gases, the flow of which is represented by the arrow Fl, this duct being situated upstream of the engine 9.
• the output of the engine 2 is formed by a manifold 93 of the exhaust gas.
• the latter is connected to the gas exhaust circuit 102 whose flow is shown schematically by the arrow F2.
• the assembly 1 comprises, according to one embodiment, a recirculation loop 103 of the exhaust gas, allowing part of the exhaust gas flowing in the exhaust circuit 102 to be reinjected upstream of the engine 9.
• the recirculation loop 103 comprises an outlet opening into the valve according to the invention. More specifically, the recirculation loop 103 opens into the second conduit 3 of fluid inlet.
• the valve 1 is thus arranged upstream of the engine 9.
• the first inlet duct 4 is connected to the portion of the intake duct 101 upstream of the valve 1 and the outlet duct is connected to the portion of the duct 101 ' inlet valve downstream of the valve 1.
• Such a valve position makes it possible to use less noble materials and avoids thermal stresses with respect to the valves arranged at the output of the engine.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=52469209

Family Applications (1)

Country Status (3)

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Family Cites Families (7)

• 2014
  • 2014-12-17 FR FR1462573A patent/FR3030635A1/fr active Pending
• 2015
  • 2015-12-14 WO PCT/FR2015/053488 patent/WO2016097566A1/fr active Application Filing
  • 2015-12-14 EP EP15823653.9A patent/EP3234335A1/de not_active Withdrawn

Non-Patent Citations (2)

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