EP1916409A1 - Einspeisungsvorrichtung für gasförmiges Fluid, Fluidkreislauf einer gasförmigen Fluid und Filtervorrichtung, die mit einer solchen Einspeisevorrichtung für gasförmiges Fluid ausgestattet ist - Google Patents

Einspeisungsvorrichtung für gasförmiges Fluid, Fluidkreislauf einer gasförmigen Fluid und Filtervorrichtung, die mit einer solchen Einspeisevorrichtung für gasförmiges Fluid ausgestattet ist Download PDF

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Publication number
EP1916409A1
EP1916409A1 EP07291274A EP07291274A EP1916409A1 EP 1916409 A1 EP1916409 A1 EP 1916409A1 EP 07291274 A EP07291274 A EP 07291274A EP 07291274 A EP07291274 A EP 07291274A EP 1916409 A1 EP1916409 A1 EP 1916409A1
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EP
European Patent Office
Prior art keywords
circuit
gaseous fluid
housing
shutter
membrane
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Withdrawn
Application number
EP07291274A
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English (en)
French (fr)
Inventor
Bruno Le Mouellic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trelleborg Fluid and Acoustic Solutions
Original Assignee
Trelleborg Fluid and Acoustic Solutions
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trelleborg Fluid and Acoustic Solutions filed Critical Trelleborg Fluid and Acoustic Solutions
Publication of EP1916409A1 publication Critical patent/EP1916409A1/de
Withdrawn legal-status Critical Current

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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
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • 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
    • F02M35/02—Air cleaners
    • F02M35/04—Air cleaners specially arranged with respect to engine, to intake system or specially adapted to vehicle; Mounting thereon ; Combinations with other devices
    • 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
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10013—Means upstream of the air filter; Connection to the ambient air
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
    • F02M31/06—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air
    • F02M31/062—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air with thermostat and pneumatic actuator both working on the air mixture control 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
    • F02M35/02—Air cleaners
    • F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
    • F02M35/09—Clogging indicators ; Diagnosis or testing of air cleaners
    • 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
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles

Definitions

  • the present invention relates to a device for supplying gaseous fluid, for a gaseous fluid circulation circuit to at least one gaseous fluid supply inlet, as well as a gaseous fluid circulation circuit and a filtration device equipped with such a device for supplying gaseous fluid.
  • gaseous fluid circulation circuits are today equipped with a main air inlet and an additional closable air inlet. This is particularly the case of air intake circuits of internal combustion engines, in particular supercharged engines.
  • the additional air inlet is generally positioned on the air intake circuit, downstream of a filter equipping the circuit.
  • the main air inlet is usually an inlet of fresh air kept constantly open.
  • the opening control of the additional air inlet can operate under various conditions.
  • the gaseous fluid filtration device integrated in the circuit clogs in time. To maintain a good air flow at the engine to supply air, despite the clogging of the filter, it can be expected to open the additional air intake inlet positioned downstream or in line with the filtered.
  • This air intake must open when the pressure drops on the circuit reach a predetermined value.
  • This additional air inlet can also be opened when the temperature outside the circuit is a negative temperature.
  • the opening of this additional air inlet must therefore be controlled while the pressure drops on the circuit do not reach the value corresponding to a clogged filter.
  • the mechanical design devices known to date for controlling the opening of the additional air intake are based on the presence of an extensible thermal probe whose variation in length resulting from a variation of temperature allows the displacement of a shutter to which it is directly coupled.
  • the control for example in opening can be performed for given temperature conditions regardless of the vacuum conditions inside the circuit. It is therefore not possible to prevent a displacement of the shutter during a temperature variation causing a variation in the length of the probe, even if the vacuum conditions inside the circuit are not met.
  • organs such as bimetallic or bimetallic element complementary to the action of the probe. This results in a significant complexity of the devices.
  • An object of the present invention is therefore to provide a device for supplying gaseous fluid whose design gives it improved robustness and durability.
  • Another object of the present invention is to provide a device for supplying gaseous fluid whose design makes it possible to dispense with complex components based on electronics.
  • Another object of the present invention is to propose a device for supplying a gaseous fluid whose design allows the shutter to be controlled from temperature and vacuum torques so that, for the same value of depression in the circuit, circulation of gaseous fluid, either for the same temperature value, controlled or not in a controlled manner the opening of a closable air inlet equipping said circuit.
  • the subject of the invention is a device for supplying gaseous fluid for a gaseous fluid circulation circuit to at least one gaseous fluid supply inlet, this device comprising at least one pneumatic actuator and a shutter for the or at least one gaseous fluid supply inlet of the circuit, said actuator being in the form of a housing compartmentalized by a membrane, this housing comprising on the one hand means for connecting one of its compartments to said circuit, on the other hand means for connecting the membrane to the shutter of at least one circuit input, said membrane, coupled to the shutter, being a movable membrane, capable of being deformed by the variations of pressure prevailing inside the housing compartment connectable to said circuit, to allow, during its deformation, the opening of said circuit input, this membrane being biased in the closed position of the shutter by elastically deformable means, the elastically deformable means reminding the diaphragm in the closed position of the shutter being prestressed by means of at least one temperature-expandable thermal probe, such as this reigning outside and / or inside the
  • these springs offer either for the same control pressure or for the same temperature, the possibility of obtaining or not the opening control. shutter. Thanks to the non-interposition of the probe between membrane and shutter and the absence of mechanical coupling between probe and shutter, the shutter is not integral in displacement of the probe and is controlled in displacement from two parameters acting in combination namely the temperature and the value of the circuit depression.
  • temperature value it is controlled or not the opening of the shutter as a function of the value of the depression.
  • depression value it is controlled or not the opening of the shutter as a function of temperature.
  • the prestressing of the elastically deformable means is modulated by the temperature. It is therefore possible, for the same pressure value of the gaseous fluid in the gaseous fluid circulation circuit, to vary the threshold for triggering the deformation of the fluid. membrane and therefore the triggering threshold of the opening of the closable air inlet, said generally additional air inlet opening of the circuit.
  • the springs are here compressed on the one hand under the action of an extension of the probe, on the other hand under the action of a pressure variation, in particular a pressure drop in the direction of a reducing the volume of the compartment housing the elastic return means said spring compartment.
  • the springs may be identical or of different strength. In the case of springs of different strength, the weakest spring force is more particularly stressed at low temperature in the retracted position of the probe and acts against the deformation of the membrane obtained by the vacuum control. The greater force spring is more particularly urged in the extended position of the probe so that a large depression is required to control the deformation of the membrane and therefore the opening of the shutter.
  • the springs are disposed one on one side, the other on the other side of a so-called intermediate piece, positioned inside the spring compartment of the actuator housing, one springs being disposed between the extensible portion of the probe or a piece that caps the extensible portion of the thermal probe and said intermediate piece, the other of the springs extending between said intermediate piece and the movable membrane or a moving integral part of said membrane.
  • the expandable thermal probe housed inside the so-called spring compartment of the actuator housing, includes a probe body from which protrudes a rod of variable length as a function of the temperature forming the extensible part of the probe, this extensible portion of the probe being capped by a piece and in that the intermediate piece has the shape of two ducts held coaxial by a radial connection generally in one piece with said conduits, the inner conduit coming to thread over an axial projection of the piece covering the extensible portion of the probe while the outer conduit is provided with a radial rim forming surface of one of the springs.
  • the probe is independent in displacement of the shutter coupled directly to the membrane without interposition of the probe.
  • the means for connecting the so-called spring compartment of the actuator housing to the circuit and the means for connecting the diaphragm to the shutter of a circuit input are common on at least part of their length.
  • the means for connecting the diaphragm to the shutter comprise at least one tubular part projecting at least partially from the actuator housing and passing through the membrane connected to said part in a sealed manner by forming a flange around said part, this tubular part , coupled to the shutter, such as a shutter, by a connecting arm, being driven by an axial reciprocating movement in the direction of the inside or the outside of the housing under the effect of the deformation of the membrane.
  • the tubular piece opens at one of its ends into the compartment, said springs of the housing and is connectable by its other end, directly or via a connecting piece, to a suction zone or depression of the circuit.
  • the spring compartment is thus subject to pressure variations within the circuit.
  • the subject of the invention is also a circuit for circulating gaseous fluid, in particular an air intake of an internal combustion engine, said circuit being equipped with at least one so-called main air inlet, a air filter filtering air from said inlet and an additional closable air inlet preferably disposed downstream or vertically above the air filter, characterized in that the additional air inlet is controlled by opening through a gaseous fluid supply device of the aforementioned type.
  • the subject of the invention is also an air filtration device, in particular for air intake circuit of an internal combustion engine, said device being in the form of a housing equipped for its connection to the circuit of an inlet and an air outlet, this housing enclosing a filter compartmentalizing the housing and filtering air from the air inlet of said housing before its expulsion from said housing through the air outlet, said housing having the right , in particular at the plumb or downstream of the filter, an additional air inlet closable, characterized in that the additional air inlet is controlled in opening via a device for supplying gaseous fluid from the aforementioned type, the actuator of the gaseous fluid supply device being integrated in the housing of the air filtration device.
  • the shutter of the gaseous fluid supply device is disposed outside the filtering device housing and moves outwardly of said housing as it passes from the closed position to the open position of the additional air intake.
  • the additional air inlet closable of the filter device housing is made in one piece with the gaseous fluid supply device.
  • the invention relates to a device for supplying gaseous fluid for a gaseous fluid circulation circuit to at least one gaseous fluid supply inlet.
  • the device for supplying gaseous fluid will be more particularly described in the case of an application to an air intake circuit of a supercharged engine generally vehicle.
  • the supercharged air intake circuit is therefore a circuit equipped with a main intake air intake, generally called fresh air intake inlet, and at its other end a turbocharger allowing the supply in the engine air from the fresh air inlet.
  • a filter device conforming for example to that shown in Figure 1.
  • This filter device is in the form of a housing 21 equipped for its connection to the rest of the circuit, an air inlet 22 and an air outlet 23.
  • the housing 21 is partitioned by means of a filter 24 filtering the air from the inlet 22 before being rejected in the circuit by the output 23 of said housing.
  • a tapping is provided downstream of the filter 24 for connecting the supply device described below to a zone 27 of depression or suction of the circuit forming the control depression of the device.
  • This filtration device is equipped, downstream or vertically above the air filter 24, with an additional air inlet shown at 25 in the figures.
  • This additional air inlet 25 is a closable inlet capable of being closed off by means of a device for supplying gaseous fluid according to the invention.
  • the device for supplying gaseous fluid is integrated into the casing of the filtration device but it could have been equivalently positioned on an upstream portion of the fluid circulation circuit or on an downstream portion of said circuit without departing from the scope of the invention.
  • This gaseous fluid supply device generally comprises at least one pneumatic actuator 1 and a shutter member 11 of the at least one gaseous fluid supply inlet 25 of the circuit.
  • the circuit comprises a main gaseous fluid supply inlet, represented at 22, and a so-called supplementary gas supply inlet 25, this inlet 25 being a closable entrance while the main entrance 22 is kept constantly open.
  • supplementary gas supply inlet 25 being a closable entrance while the main entrance 22 is kept constantly open.
  • such a device for supplying gaseous fluid can also be integrated into a gaseous fluid circulation circuit comprising a single inlet for filling gaseous fluid or a circuit comprising at least two fluid supply inlets. gaseous, at least one of said entries being closable.
  • the supply device comprises in each case at least one pneumatic actuator and a closure member 11.
  • the pneumatic actuator 1 is in the form of a housing 2 compartmentalized by a membrane 7, the compartments having been shown at 2A and 2B in the figures.
  • This housing also comprises, on the one hand, means 3 for connecting the one 2A of its compartments 2A, 2B to the circuit, on the other hand, means 4 for connecting the membrane 7 to the shutter 11 of a circuit input.
  • This device therefore makes it possible, under predetermined pressure and temperature conditions, to control the opening of the gaseous fluid supply inlet 25 of the circuit by displacement of the shutter member 11 closing said inlet 25.
  • the membrane 7, coupled to the shutter 11, is a movable membrane, capable of being deformed by the pressure variations inside the compartment 2A of the housing 2 connectable to said circuit.
  • This membrane thus allows, during its deformation, the opening of said circuit input 25 by moving control of the shutter 11 coupled to said membrane.
  • This membrane 7 is recalled in the closed position of the shutter 11 by means 8, 9 elastically deformable.
  • these resiliently deformable means 8, 9, which recall the membrane 7 in the closed position of the shutter 11, are formed by two springs housed inside the compartment 2A and are prestressed by means of minus a thermally expandable temperature probe 6, such as that prevailing outside and / or inside the gaseous fluid circulation circuit.
  • the springs are thus disposed between the probe 6 and the membrane 7, the membrane 7 being coupled to the shutter 11.
  • the thermal probe 6 is extensible as a function of the temperature prevailing outside the gaseous fluid circulation circuit.
  • the thermal probe 6 is extensible as a function of the temperature prevailing outside the gaseous fluid circulation circuit.
  • the prestressing of the elastically deformable means reminding the membrane 7 in the closed position of the shutter 11 is adjustable by said external temperature, is varied, for the same pressure value, the trigger threshold of the deformation of the membrane so that it is possible to control for the same pressure value of the air intake line of the fluid circulation circuit the opening of the additional feed inlet gaseous fluid of the circuit or on the contrary to keep closed this opening.
  • the casing 2 of the actuator comprises, on the one hand, means 3 for connecting one of its compartments, in this case the compartment 2A to the fluid circulation circuit, in particular to the compartment 27 disposed downstream of the filter 24 of the filtration device, on the other hand, means 4 for connecting the membrane 7 to the shutter 11 of a fluid circulation circuit inlet 25.
  • the means 3 for connecting a 2A of the compartments 2A, 2B of the housing 2 of the actuator 1 to the circuit and the means 4 for connecting the membrane 7 to the shutter 11 of an inlet 25 circuit are common over at least a portion of their length so as to simplify the design of the device and to reduce the overall size of the assembly.
  • the means 4 connecting the membrane 7 to the shutter 11 comprise at least one tubular part 5 projecting at least partially from the housing 2 of the actuator 1 and through the membrane 7 connected to said part 5 in a sealed manner forming a flange around said part 5.
  • This tubular piece which opens at one of its ends in a spring compartment 2A of the housing 2 and is connectable by its other end, directly or via a part 12 of connection, to a zone 27 of depression or suction of the circuit, is driven by a reciprocating axial movement in the direction of the inside or outside of the housing 2 under the effect of the deformation of the membrane 7.
  • the tubular piece 5 thus acts both as a connecting piece of the membrane to the shutter 11 and the role of placing the compartment 2A of the device housing in communication with the vacuum or vacuum zone 27 of the circuit, corresponding to the gaseous fluid circulation circuit zone positioned downstream of the filter 24 fitted to said circuit.
  • the depression prevailing inside the zone 27 of the gaseous fluid circulation circuit makes it possible, when it reaches a predetermined value, in particular during clogging of the filter, to control, because of the transmission of this depression in the spring compartment 2A, the deformation of the membrane 7 against the elastically deformable means acting on said membrane to thereby allow the opening of the additional air inlet equipping said circuit and thus overcome the flow variations of air resulting from clogging of the filter.
  • the shutter 11 of the gaseous fluid supply inlet 25 of the circuit is in the form of a flap.
  • the tubular part, to which the membrane 7 is sealingly connected, is thus coupled to the shutter 11 preferably in the form of a flap by a connecting arm 10.
  • the thermal probe is not interposed between membrane 7 and shutter 11 and is not intended to transmit the movement of the membrane to the shutter.
  • the membrane 7 Under the effect of the deformation of the membrane 7 generated by the increase of the vacuum inside the circuit due to clogging of the filter, the membrane 7 is deformed. This deformation is transmitted through the tubular member 5 moved axially to the connecting arm 10 which then controls the passage of the shutter 11 from a closed position to an open position of the gaseous fluid supply inlet 25 of the circuit.
  • the connecting arm 10 is snapped onto the tubular member and is mounted with clearance on said tubular member.
  • the means 3 for connecting the compartment 2A of the housing 2 of the actuator to the fluid circulation circuit similarly comprise this part 5 tubular whose end protruding outside the housing is connected, via a connecting piece 12, such as a flexible conduit to the zone 27 of the filter device disposed downstream of the filter 24 of said device .
  • This connecting piece 12 made in the form of a flexible pipe, could equally have been made in the form of a rigid pipe or be removed to allow a direct connection of the tubular part to the zone 27 of depression or aspiration of the circuit, in particular by fitting said parts together in order to subject the compartment 2A spring to said depression through this connection by a channel or suction duct of the compartment 2A with the fluid circuit.
  • This connection therefore allows a variation of pressure inside the compartment 2A, this pressure variation, also called control depression, being able to cause the displacement of the membrane 7 and, consequently, the opening of the shutter.
  • the tubular part 5 is therefore the element common to the means 3 for connecting the compartment 2A of the actuator housing to the circuit and the means for connecting the diaphragm 7 to the shutter 11 of an inlet 25. of circuit.
  • This tubular piece 5 has, at or near its end housed in the housing 2 of the actuator 1, a shoulder 13 coming from one of its faces bearing against a wall of the housing 2 of the actuator 1 in position closed shutter 11 and delimiting by its other face a bearing surface of elastically deformable means 9 of return of the membrane 7 in the closed position of the shutter 11.
  • the housing 2 of the actuator consists of at least two parts assembled together by snapping or welding, the membrane 7 being positioned at the joint plane between the constituent elements of the housing.
  • This housing is equipped, in one of its compartments, with an opening through which the tubular part is introduced to allow the connection of the other of the compartments of the housing to the circuit.
  • the membrane 7 compartmentalizing the housing 2 of the actuator is returned to the closed position of the shutter 11 of the gaseous fluid supply inlet 25 of the circuit by two springs 8, 9.
  • These springs 8, 9 for returning the membrane 7 in the closed position of the shutter 11 extend between a part, in this case the connecting piece 5 of the membrane 7 to the shutter 11, and a piece 20 to cap the extensible portion 6B of the thermal probe 6.
  • the piece 20 forming the cap and the connecting piece 5 are mounted to slide interlockingly relative to each other.
  • this cap of the expandable portion 6B of the thermal probe 6 affects the shape of a cup.
  • the expandable thermal probe 6 is itself housed inside the housing 2 of the actuator 1, inside the compartment 2A placed in communication via the part 5 with the circuit.
  • This thermal probe 6 comprises a probe body 6A from which more or less protrudes a rod, movable as a function of temperature, and forming the expandable portion 6B of the probe 6.
  • a probe body 6A from which more or less protrudes a rod, movable as a function of temperature, and forming the expandable portion 6B of the probe 6.
  • the rod 6B is driven by the expansion of a wax housed in the body and which, depending on the temperature, causes a more or less significant output of the stem of the body.
  • the piece 20 that caps the extensible portion 6B of the thermal probe 6 is therefore in the form of a cup provided near its center with a recess for accommodating the expandable portion 6B of the thermal probe 6.
  • This cup extends to the right of said housing by an axial projection whose role will be described below.
  • Two springs 8, 9 are arranged one, shown at 8, on one side, the other, shown at 9, on the other side of a piece 14, said intermediate, positioned inside the housing 2 of the actuator 1, the spring 8 being disposed between the part 20 capping the extensible part 6B of the probe 6 and said intermediate part 14, the other spring 9 extending between said intermediate part 14 and the connecting piece 5 of the membrane 7 to the shutter 11.
  • the intermediate part 14 has the shape of two ducts 15, 16 held coaxial by a generally radial connection 17 in one piece with said ducts 15, 16.
  • the inner duct 16 is snapped onto the projection 26.
  • the first spring 8 extends between the piece 20 to cap the extensible portion of the thermal probe 6 and the intermediate part 14 while the second spring 9 extends between the intermediate part 14 and the part 5 integral with the diaphragm serving to connect the diaphragm with the obturator 11.
  • the spring 9 is here of lower force than the spring 8.
  • the probe when the probe is of minimum length, it is essentially the spring 9 of the lowest value that is biased during a deformation of the membrane in the direction of an opening of the shutter.
  • This preloading of the springs modifies the threshold for triggering the deformation of the membrane under the effect of the pressure prevailing inside the compartment 2A of the actuator housing.
  • the greater the length of the extensible portion of the probe, the greater the pressure, in this case the vacuum, to reign inside the compartment 2A of the casing 1 of the actuator to generate a deformation of the membrane is important.
  • the deformation of the extensible portion of the probe occurring during an increase in temperature, at negative temperatures the extensible portion of the probe is of short length, leading to low prestressing of the springs so that the pressure, in this case the depression, necessary for the deformation of the membrane is low pressure.
  • the length of the extensible portion of the probe increases, causing significant prestressing of the springs then requiring pressure, in this case again a depression, greater in the compartment 2A , to allow the deformation of the membrane.
  • the shutter can be controlled from the closed position to the open position by deformation of the membrane in first conditions where the temperature outside the circuit is -10 ° C and the air intake line of the circuit has a pressure drop of at least 35 millibars and in second conditions where the temperature is a positive temperature and / or the air intake line of the circuit has a pressure drop of at least 85 millibars. It is thus found that for the same pressure prevailing inside said circuit on the air intake line of said circuit, the opening of the additional air supply inlet will be controlled or not according to the temperature prevailing at outside the circuit.
  • the design of such a gaseous fluid supply device is simplified since a portion of the actuator housing of the feed device is common to the housing of the filter device. This results in a simplification of the overall design.
  • the casing 2 of the gaseous fluid supply device is extended to provide additional air supply input to the circuit made in one piece with a portion of the actuator housing.
  • This solution makes it possible to guarantee perfect adaptation of the shutter 11 to the air supply inlet 25 of the circuit.
  • the integration of such a filter device on an existing gaseous fluid circulation circuit is effected via the inlet 22 and the outlet 23 serving to connect the filtration device to said circuit.
  • the feeding device gaseous fluid is thus previously mounted on the filter device and connected thereto.
  • the deformable membrane 7 positioned inside the casing 2 of the actuator is deformed as a function of the pressure, in this case the vacuum, prevailing downstream of the filter equipping the filtration device.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP07291274A 2006-10-25 2007-10-19 Einspeisungsvorrichtung für gasförmiges Fluid, Fluidkreislauf einer gasförmigen Fluid und Filtervorrichtung, die mit einer solchen Einspeisevorrichtung für gasförmiges Fluid ausgestattet ist Withdrawn EP1916409A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0609352A FR2907873B1 (fr) 2006-10-25 2006-10-25 Dispositif d'alimentation en fluide gazeux,pour circuit de circulation de fluide gazeux et dispositif de filtration equipe d'un tel dispositif d'alimentation en fluide gazeux

Publications (1)

Publication Number Publication Date
EP1916409A1 true EP1916409A1 (de) 2008-04-30

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EP07291274A Withdrawn EP1916409A1 (de) 2006-10-25 2007-10-19 Einspeisungsvorrichtung für gasförmiges Fluid, Fluidkreislauf einer gasförmigen Fluid und Filtervorrichtung, die mit einer solchen Einspeisevorrichtung für gasförmiges Fluid ausgestattet ist

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EP (1) EP1916409A1 (de)
FR (1) FR2907873B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008116871A1 (de) * 2007-03-28 2008-10-02 Mahle International Gmbh Frischluftanlage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2423647A2 (fr) * 1978-04-18 1979-11-16 Mann & Hummel Filter Dispositif de reglage de la temperature de l'air d'aspiration de moteurs a combustion interne et a compression mixte
DE2855198B1 (de) * 1978-12-21 1980-04-10 Knecht Filterwerke Gmbh Einrichtung zur Regelung der Temperatur der Ansaugluft eines Verbrennungsmotors
FR2550581A1 (fr) * 1983-08-09 1985-02-15 Lautrette Cie Sa Servoregulateur de la temperature de l'air d'admission de moteurs a combustion interne a carburant
DE19737545A1 (de) * 1997-08-28 1999-03-04 Bosch Gmbh Robert Ansaugeinrichtung, insbesondere für Brennkraftmaschinen in Kraftfahrzeugen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2423647A2 (fr) * 1978-04-18 1979-11-16 Mann & Hummel Filter Dispositif de reglage de la temperature de l'air d'aspiration de moteurs a combustion interne et a compression mixte
DE2855198B1 (de) * 1978-12-21 1980-04-10 Knecht Filterwerke Gmbh Einrichtung zur Regelung der Temperatur der Ansaugluft eines Verbrennungsmotors
FR2550581A1 (fr) * 1983-08-09 1985-02-15 Lautrette Cie Sa Servoregulateur de la temperature de l'air d'admission de moteurs a combustion interne a carburant
DE19737545A1 (de) * 1997-08-28 1999-03-04 Bosch Gmbh Robert Ansaugeinrichtung, insbesondere für Brennkraftmaschinen in Kraftfahrzeugen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008116871A1 (de) * 2007-03-28 2008-10-02 Mahle International Gmbh Frischluftanlage

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FR2907873B1 (fr) 2012-03-23

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