EP2795090B1 - Entlüftungskreislauf für wenigstens ein magnetsteuerventil und brennkraftmaschine mit einer solchen schaltung - Google Patents

Entlüftungskreislauf für wenigstens ein magnetsteuerventil und brennkraftmaschine mit einer solchen schaltung Download PDF

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Publication number
EP2795090B1
EP2795090B1 EP12806542.2A EP12806542A EP2795090B1 EP 2795090 B1 EP2795090 B1 EP 2795090B1 EP 12806542 A EP12806542 A EP 12806542A EP 2795090 B1 EP2795090 B1 EP 2795090B1
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EP
European Patent Office
Prior art keywords
air
engine
circuit
chamber
air venting
Prior art date
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Application number
EP12806542.2A
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English (en)
French (fr)
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EP2795090A1 (de
EP2795090B8 (de
Inventor
Martial Dore
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.)
PSA Automobiles SA
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Peugeot Citroen Automobiles SA
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Publication of EP2795090B8 publication Critical patent/EP2795090B8/de
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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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers

Definitions

  • the present invention relates to a circuit for venting at least one control solenoid valve and a heat engine incorporating such a circuit.
  • a valve of variable geometry of a turbocharger As examples of use of a solenoid valve, there may be mentioned a valve of variable geometry of a turbocharger, a valve or discharge valve disposed at the exhaust outlet of a turbocharger, a valve for the metering device. air, a valve for the bypass line of the charge air cooler or RAS and a valve for the branch containing said cooler, a valve for the recirculated exhaust gas duct or EGR and a valve for the branch containing said bypass duct, a valve for an air connection system at the inlet of the turbocharger or RET and a valve for the braking assistance systems requiring a source of depression, or even partial vacuum.
  • the air inlet necessary for the regulation of the vacuum in the pneumatic actuators is via one or more control solenoid valves.
  • These solenoid valves can not be completely sealed. It is nevertheless necessary to guarantee the absence of water entry by the venting circuit of at least one solenoid valve.
  • FIGS. 1 and 2 of the present patent application show an example of protection of a circuit for venting one or two solenoid valves 2 on a motor 1.
  • the venting element 8, carried by one end of the venting circuit, is visible at the figure 2 .
  • the venting circuit can be connected to one or more solenoid valves 2.
  • this solenoid valve 2 is connected to driving a turbocharger 3, for example for variable geometry control or the discharge valve.
  • the venting element 8 of this solenoid valve 2 is, according to this state of the art, in the upper part towards the rear of the engine 1, under the air filter 4. Although the air filter 4 exerts a protective action of the venting element 8 by covering it, as shown in FIG. figure 1 and despite this location relatively well protected for said element, there are still some risks related to this position.
  • the document FR-A-2 913 224 discloses a vacuum circuit system in a motor vehicle.
  • the primary pipe connecting the vacuum generator and at least one pneumatic receiver is connected to means for bringing the primary pipe to atmospheric pressure when the vacuum generator is at a standstill.
  • the atmospheric pressure means comprise a secondary pipe connected to the primary pipe and opening to the atmosphere opposite the primary pipe through an air filter.
  • the problem underlying the present invention is to allow the vent element of a vent circuit of at least one control solenoid valve and said circuit to be safe. all splashing water or water condensation in a simple and effective way.
  • a circuit for venting at least one solenoid valve in a heat engine comprising at one end a vent element, characterized in that the breather element is housed in a protective volume surrounding it in a sealed manner, this protection volume comprising means for connecting and pressurizing said volume with an air intake pipe present on the heat engine or an element carried by said pipe in order to put said volume at the air pressure prevailing in said pipe.
  • the technical effect is to obtain effective protection of the vent element of said circuit by protecting said element against condensation of water, splashing water or impurities.
  • the invention also relates to a heat engine comprising at least one air intake pipe, characterized in that it comprises such a circuit for venting at least one solenoid valve.
  • the protection volume surrounding the venting element is in the form of a box, said box being connected to the air filter of the air intake pipe. at the intake manifold of the engine.
  • the box is attached directly to an air filter tank present on the engine by fixing means.
  • the means for connecting and pressurizing the box are in the form of a series of communication orifices
  • said communication orifices between the box and the air filter are carried by a grid, said grid having sealing means for securing with said box.
  • said box when the box has a sealed receiving endpiece surrounding the end of the circuit carrying the venting element, said box comprises a series of passages putting said tip at the pressure prevailing in the box.
  • the heat engine has at least one turbocharger and the volume of protection surrounding the vent element is in the form of a plenum chamber, said chamber being connected to the connection turbocharger inlet air upstream of the crankcase recirculation tapping.
  • connection and pressurizing means of the plenum chamber are in the form of a series of communication orifices, said communication orifices are directly pierced in the wall of the inlet air connection of the plenum. turbocharger.
  • the invention finally relates to a motor vehicle, characterized in that it comprises such a heat engine.
  • a protective volume sealingly surrounding the venting element of the venting circuit comprising means for connecting and pressurizing the said venting circuit. volume with an air intake pipe present on the engine or an element carried by said pipe to put said volume at the air pressure prevailing in said pipe.
  • Such a pipe may be part of the main air intake circuit to the engine air collector or be an air supply line of an auxiliary device present on the engine, for example a turbocharger.
  • the protection means may be connected to any element on the air intake duct, for example an air filter in the case of a duct forming part of the main air intake circuit at the air intake manifold. air.
  • FIGS 3 to 8 illustrate the first embodiment of the present invention. In this embodiment, it is intended to permanently shelter from the water the free air element 8, visible to the figure 5 and being disposed at the free end of a circuit for venting at least one solenoid valve 2.
  • the protective volume is a box 5 and the air intake pipe present on the engine is the air intake pipe to the intake manifold of the engine 1 thermal, this pipe carrying an air filter 4 as an element to which the box 5 is connected.
  • a box 5 attached directly to the tank of the air filter 4.
  • the box 5 has two fasteners 6, for example screws, for its attachment to the cylinder head cover 7 also forming the tank for receiving the air filter 4, as shown in FIGS. Figures 3 and 4 .
  • the box 5 is, on its underside, closed by a grid 9, fixed with two screws 10 as means for securing the box 5.
  • the grid 9 is pierced by a series of orifices 11, intended to put the box 5 at atmospheric pressure by making it communicate with the air filter 4.
  • the orifices 11 can form two parallel lines in the length of the grid 9.
  • the grid 9 and the orifices 11 form the connecting means and pressurized according to the present invention.
  • a seal 12 may be interposed between the grid 9 and the box 5, in order to complete the watertightness of said box 5.
  • any other method of securing advantageously sealed that the screws 10 of the grid 9 on the box 5 may be considered.
  • This joining method may be, for example, by gluing or welding, which may render unnecessary the seal 12, sealing being then guaranteed without adding a specific element.
  • a tip 13 carried by the casing 5 is disposed at the extreme left of the tank of the air filter 4.
  • the air element 8 visible at the figure 5 , of the circuit for venting the solenoid valve, the venting element penetrating through said nozzle 13.
  • a series of two horizontal passages 14 make it possible to put said end element 8 in communication with the box 5 placed at atmospheric pressure.
  • the box 5 has two rigid tabs 15 each having a recess for the passage of the fixing means 6 of the box 5 to the tank of the air filter formed on the cylinder head cover.
  • FIGs 9 to 12 illustrate the second embodiment of the present invention.
  • it is planned to definitively protect from the water the venting element at the end of the venting circuit 19 of the solenoid valve 2, by positioning it in a plenum chamber 18 communicating with the turbocharging or RET inlet air connection 16, this in the vacuum air line, upstream of the recirculation tap 17 of the crankcase gases.
  • crankcase gases consists in recycling the combustion gases, migrating mainly by the segmentation of the pistons, directly to the air intake of the engine, after ensuring de-oiling. Such a recycling of gases may present risks of pollution of the plenum 18.
  • the volume of protection is a plenum 18 and the driving air intake present on the engine is the inlet air inlet 16 of the turbocharger.
  • this configuration is not preferred because there are many risks for the control solenoid valve 2, this solenoid valve 2 may be the solenoid valve of the turbocharger 3, these risks being related to the presence very close to the recycling quilting 17 crankcase gas that can cause oil lifts or vapors.
  • a plenum 18 outside the air inlet fitting and communicating with said fitting is therefore preferred.
  • the plenum 18 is advantageously directly grafted at the upper part of the air connector 16 and in said chamber 18 is connected to the circuit 19 for venting the solenoid valve 2, this circuit being particularly visible at the figure 10 .
  • the wall 20 of the inlet air connection 16 or RET is perforated with a series of orifices 21 carried by a separation 22 between the plenum chamber 18 and the air intake connector 16.
  • the air of the solenoid valve is directly in the air connector 16, inside the vacuum air line and away from any presence of potential oil.
  • the wall 20 and the orifices 21 form the connecting and pressurizing means according to the present invention.
  • the separation 22 carrying the series of orifices 21 limits the risks of disturbances in the connection of the solenoid valve with the air connection, these disturbances being essentially due to the risings or the oil vapors due to the very close presence of the crankcase recycling tap, as shown under reference 17 to the figure 11 .
  • the venting circuit 19 of each of them is advantageously connected to a distributor, itself connected to the box 5 or to the plenum chamber 18.
  • venting circuit 19 comprising several venting circuits of a respective solenoid valve 2 and a venting element 8 common to said circuits at one end, each of said circuits.
  • a venting circuit 19 comprising several venting circuits of a respective solenoid valve 2 and a venting element 8 common to said circuits at one end, each of said circuits.
  • presenting a respective venting element the venting elements of each of said circuits being grouped in a distributor connected to the common venting element 8, this venting element common 8 being housed in the protective volume in the form of the box 5 or the plenum 18.
  • a main advantage obtained by each of the two embodiments of the invention is essentially the complete protection of the venting of at least one solenoid valve, vis-à-vis splashing water and oil, this by integrating the vent end element into a box connected to the air filter or into a plenum chamber connected to the turbocharger air inlet fitting.
  • the partition 22 can be part of the wall of the inlet air connector 16 which reduces the cost of a plenum chamber 18.
  • the volume of protection in the form of a box 5 or a volume of stillness 18 can form an irremovable portion of the pipe 16 air intake present on the thermal engine 1 or element 4 of said pipe to which it is connected.
  • the protection volume 5, 18 can thus be fixed to the pipe 16 or to said element 4 by gluing, welding or crimping on said pipe 16 or on said element 4.
  • the protective volume 5, 18 can be removable from said conduit 16 or said element 4 being fixed, preferably in a sealed manner, to said pipe 16 or to said element 4 by removable fastening means, for example screws, clips or staples.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Supercharger (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Claims (11)

  1. Entlüftungskreislauf (19) wenigstens eines Magnetventils (2) in einer Brennkraftmaschine (1), wobei der Kreislauf (19) an einem Ende ein Entlüftungselement (8) umfasst, dadurch gekennzeichnet, dass das Entlüftungselement (8) an einen Schutzraum (5, 18) vor Wasserspritzern angeschlossen ist, wobei dieser Schutzraum (5, 18) Mittel zum Anschließen und Druckbeaufschlagen (9, 11; 20, 21) des Raums (5, 18) mit einer Lufteinlassleitung (16) umfasst, die auf der Brennkraftmaschine (1) gegenwärtig ist, oder ein Element (4), das von der Leitung getragen wird, um den Raum (5, 18) auf den Luftdruck, der in der Leitung (4, 16) herrscht, zu bringen.
  2. Entlüftungskreislauf (19) nach dem vorhergehenden Anspruch, für den die Anschluss- und Druckbeaufschlagungsmittel (9, 11; 20, 21) des Schutzraums (5, 18) eine Reihe von Öffnungen (11, 21) zur Kommunikation zwischen dem Raum (5, 18) und der Lufteinlassleitung (4, 16) umfassen, und für den der Raum (5, 18) einen dichten Aufnahmeansatz (13) aufweist, der das Ende des Kreislaufs (19), das das Entlüftungselement (8) trägt, umgibt.
  3. Entlüftungskreislauf (19) nach einem der zwei vorhergehenden Ansprüche, der jeweils mehrere Entlüftungskreisläufe eines Magnetventils (2) und ein Entlüftungselement (8), das den Kreisläufen an einem Ende gemeinsam ist, umfasst, wobei jeder der Kreisläufe ein jeweiliges Entlüftungselement aufweist, wobei die Entlüftungselemente jedes der Kreisläufe (19) in einem Verteiler zusammengelegt sind, der an das gemeinsame Entlüftungselement (8) angeschlossen ist, wobei dieses gemeinsame Entlüftungselement (8) in dem Schutzraum (5, 18) untergebracht ist.
  4. Brennkraftmaschine (1), die mindestens eine Lufteinlassleitung (4, 16) umfasst, dadurch gekennzeichnet, dass sie einen Entlüftungskreislauf (19) wenigstens eines Magnetventils (2) nach einem der vorhergehenden Ansprüche umfasst.
  5. Brennkraftmaschine (1) nach dem vorhergehenden Anspruch, wobei der Schutzraum (5, 18), der das Entlüftungselement (8) umgibt, die Form eines Kastens (5) hat, wobei der Kasten (5) an das Luftfilter (4) der Luftansaugleitung an dem Ansaugsammler der Brennkraftmaschine (1) angeschlossen ist.
  6. Brennkraftmaschine (1) nach dem vorhergehenden Anspruch, für die der Kasten (5) direkt auf einem Behälter (7) eines Luftfilters (4), das auf der Maschine (1) gegenwärtig ist, durch die Befestigungsmittel (6) befestigt ist.
  7. Brennkraftmaschine (1) nach einem der zwei vorhergehenden Ansprüche, wobei, wenn die Anschluss- und Druckbeaufschlagungsmittel (9, 11) des Kastens (5) die Form einer Reihe von Kommunikationsöffnungen (11) haben, die Kommunikationsöffnungen (11) zwischen dem Kasten (5) und dem Luftfilter (4) von einem Gitter (9) getragen werden, wobei das Gitter (9) dichte Mittel zum festen Verbinden (10, 12) mit dem Kasten (5) umfasst.
  8. Brennkraftmaschine (1) nach einem der zwei vorhergehenden Ansprüche, wobei, wenn der Kasten (5) einen dichten Aufnahmeansatz (13), der das Ende des Kreislaufs (19) umgibt, das das Entlüftungselement (8) trägt, aufweist, der Kasten (5) eine Reihe von Passagen (14) umfasst, die den Ansatz (13) auf den Druck, der in dem Kasten (5) herrscht, bringen.
  9. Brennkraftmaschine (1) nach Anspruch 4, die mindestens einen Turboverdichter (3) aufweist, und bei der der Schutzraum (5, 18), der das Entlüftungselement (8) umgibt, die Form einer Dämpfungskammer (18) hat, wobei die Kammer (18) mit dem Eingangsluftanschluss (16) des Turboverdichters (3) stromaufwärts der Recyclingabzweigung (17) der Gehäusegase verbunden ist.
  10. Brennkraftmaschine (1) nach dem vorhergehenden Anspruch, wobei, wenn die Anschluss- und Druckbeaufschlagungsmittel (20, 21) der Dämpfungskammer (18) die Form einer Reihe von Kommunikationsöffnungen (21) haben, die Kommunikationsöffnungen (21) direkt in die Wand (20) des Lufteingangsanschlusses (16) des Turboverdichters (3) gebohrt sind.
  11. Kraftfahrzeug, dadurch gekennzeichnet, dass es eine Brennkraftmaschine (1) nach einem der Ansprüche 4 bis 10 umfasst.
EP12806542.2A 2011-12-20 2012-11-22 Entlüftungskreislauf für wenigstens ein magnetsteuerventil und brennkraftmaschine mit einer solchen schaltung Active EP2795090B8 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1162011A FR2984412B1 (fr) 2011-12-20 2011-12-20 Circuit de mise a l'air d'au moins une electrovanne de commande et moteur thermique incorporant un tel circuit
PCT/FR2012/052689 WO2013093267A1 (fr) 2011-12-20 2012-11-22 Circuit de mise a l'air d'au moins une electrovanne de commande et moteur thermique incorporant un tel circuit

Publications (3)

Publication Number Publication Date
EP2795090A1 EP2795090A1 (de) 2014-10-29
EP2795090B1 true EP2795090B1 (de) 2017-08-23
EP2795090B8 EP2795090B8 (de) 2017-10-18

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EP12806542.2A Active EP2795090B8 (de) 2011-12-20 2012-11-22 Entlüftungskreislauf für wenigstens ein magnetsteuerventil und brennkraftmaschine mit einer solchen schaltung

Country Status (3)

Country Link
EP (1) EP2795090B8 (de)
FR (1) FR2984412B1 (de)
WO (1) WO2013093267A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3017690B1 (fr) * 2014-02-14 2016-02-05 Renault Sas Liaison elastomere entre pipe d'electrovanne et conduit d'air plastique
FR3022006B1 (fr) * 2014-06-06 2017-02-10 Peugeot Citroen Automobiles Sa Ensemble mecanique comprenant un manchon, une conduite, un organe recepteur et au moins un dispositif de fixation.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5741455A (en) * 1980-08-25 1982-03-08 Mazda Motor Corp Exhaust gas returning device for engine
DE4202393A1 (de) * 1992-01-29 1993-08-05 Teves Gmbh Alfred Unterdruckversorgungsanlage fuer kraftfahrzeuge
JPH07332181A (ja) * 1994-06-10 1995-12-22 Aisin Takaoka Ltd 内燃機関の負圧供給装置
FR2913224B1 (fr) * 2007-03-01 2009-09-04 Peugeot Citroen Automobiles Sa Nouvelle architecture fonctionnelle d'un circuit de vide d'un vehicule automobile pour reserver l'integrite des actionneurs ou recepteurs pneumatiques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
EP2795090A1 (de) 2014-10-29
WO2013093267A1 (fr) 2013-06-27
FR2984412A1 (fr) 2013-06-21
EP2795090B8 (de) 2017-10-18
FR2984412B1 (fr) 2014-01-24

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