EP1020632B1 - Collecteur d'admission comportant des moyens de raccordement à un circuit de recyclage des gaz d'échappement - Google Patents
Collecteur d'admission comportant des moyens de raccordement à un circuit de recyclage des gaz d'échappement Download PDFInfo
- Publication number
- EP1020632B1 EP1020632B1 EP00400089A EP00400089A EP1020632B1 EP 1020632 B1 EP1020632 B1 EP 1020632B1 EP 00400089 A EP00400089 A EP 00400089A EP 00400089 A EP00400089 A EP 00400089A EP 1020632 B1 EP1020632 B1 EP 1020632B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubular
- venturi
- intake manifold
- air intake
- fresh
- 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.)
- Expired - Lifetime
Links
- 239000007789 gas Substances 0.000 claims description 28
- 238000011144 upstream manufacturing Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
Images
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
- F02M35/10006—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
- F02M35/10019—Means upstream of the fuel injection system, carburettor or plenum chamber
-
- 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
- F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings 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
- 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
-
- 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
- F02M35/104—Intake manifolds
- F02M35/1045—Intake manifolds characterised by the charge distribution between the cylinders/combustion chambers or its homogenisation
Definitions
- the invention relates to an intake manifold.
- the invention relates more particularly to a collector intake for fuel supply from a combustion engine motor vehicle, of the type which comprises a tubular conduit fresh air intake which opens into a block supplying cylinders with at least one outlet supply intended to be mounted opposite a duct corresponding supply practiced in a cylinder head engine, and the type in which a gas inlet tube recycled exhaust from an exhaust system of the vehicle, opens out substantially radially into the tubular air intake duct.
- collectors intended to be assembled to a injection engine i.e. collectors which do not have no connection to any organ responsible for delivering fuel to the engine and which are only intended to supply the motor with oxidizer, especially in air
- monobloc collectors in the general form of "air box" in which open at least one gas inlet tube recycled exhaust from an exhaust system of the vehicle, to improve engine performance.
- air box in which open at least one gas inlet tube recycled exhaust from an exhaust system of the vehicle, to improve engine performance.
- the tube exhaust gas inlet opens radially into a tubular intake manifold.
- This type of collector is particularly advantageous compared to older intake systems, in which a simple intake manifold is coupled to an independent unit responsible for ensuring the mixing of air fresh from the atmosphere and exhaust gases recycled. These collectors are indeed much more compact.
- the invention proposes a collector to ensure the constitution of a mixture homogeneous fresh air and recycled exhaust gases.
- the invention provides a collector exhaust of the type previously described, characterized in that a Venturi tube is arranged coaxially in the tubular fresh air intake duct, the upstream end of the Venturi tube substantially coinciding with one end upstream of the tubular fresh air intake duct, and in this that a downstream end of the Venturi tube, or Venturi neck, is arranged downstream of the exhaust gas inlet tube to delimit between the Venturi pass and the interior wall of the tubular air intake duct a suction area exhaust gases.
- FIG. 1 the whole of a collector intake 10 made in accordance with the invention.
- the intake manifold 10 has a duct tubular 12 for fresh air intake which opens into a block 14, box-shaped, supplying the cylinders which has power outputs 16 intended to be mounted opposite a supply duct (not represented) correspondent practiced in a breech (not shown) of the engine.
- the intake manifold 10 has four outlets 16 but this provision is not restrictive of the invention and it could include a higher number or lower depending on whether it is an engine with more or fewer cylinders or a multiple engine intake valves per cylinder.
- the intake manifold 10 is conventionally made by molding, which advantageously allows obtain it at low manufacturing costs.
- the intake manifold 10 includes an inlet pipe 18 for recycled exhaust gases which we see the dotted line in Figure 1 and that we can see on the perspective view of figure 2.
- the inlet tube 18 of recycled exhaust gas is arranged radially by relative to the axial direction of the tubular conduit 12 fresh air intake to allow air to be mixed fresh from the atmosphere and exhaust gases coming from an exhaust circuit (not shown) of vehicle, to improve engine performance when operation.
- the power supply 14 of the cylinders is substantially shaped parallelepiped and has on an upper face 20 a orifice 22 which coincides with a downstream end 24 of the duct axially extending fresh air intake tube 12 parallel to the longitudinal direction of the power supply 14.
- a Venturi tube 26 is arranged coaxially in the tubular inlet duct 12 fresh air.
- An upstream end 28 of the Venturi tube 26 substantially coincides with an upstream end 30 of the conduit tubular 12 for fresh air intake, and a downstream end 32 of the venturi tube 26, also called Venturi neck 32, is arranged downstream of the exhaust gas inlet tube 18 to delimit between the neck 32 of the Venturi and a wall 34 of the tubular conduit 12 an annular zone 33 for suctioning exhaust gas.
- the duct tubular 12 for fresh air intake is, in one plane transverse P located axially at the neck 32 of the Venturi, shrunk to a diameter slightly larger than the diameter outside of the Venturi pass 32.
- the difference in diameter between the neck 32 of the Venturi and the tubular duct 12 for air intake fresh is at this level of the order of a few millimeters.
- the exhaust gas inlet tube 18 being located upstream of the exhaust gas suction zone 33, these are mixed almost homogeneously with the air fresh from the atmosphere before continuing their path in the tubular duct 12 for fresh air intake in direction of the admission block 14.
- a room peripheral 36 is arranged coaxially to the Venturi tube 26 outside of it so as to define a buffer volume allowing relaxation at less partial exhaust gases recycled. This relaxation promotes uniform mixing when vacuumed in the suction zone 33 by the fresh air coming from the atmosphere flowing through the venturi tube creating a pressure difference to cause suction in the area 33.
- the power supply comprises, in one of the lateral faces 54, the outlets power supply 16 previously described, which are arranged opposite the supply conduits 56 of a cylinder head 58 of the associated thermal engine.
- At least one of the faces side of the supply pitcher 14 of the intake manifold 10, here the side face 54, has holes 60 intended allow the passage of fixing screws 62 to fix the intake manifold 10 to the cylinder head 58 of the engine.
- a second side face 64 of the intake manifold 10 also includes 66 holes which are intended for allow the passage of screws 68 which also cross the face lateral 64 to allow the collector to be fixed supply 10 to the cylinder head 58 of the associated thermal engine.
- Figure 2 illustrates the particular assembly of the tube of Venturi 26 between the upstream end 30 of the tubular conduit 12 and a flange 31 for connection to the vehicle radiator.
- the end 30 of the tubular conduit 12 admission comprises a housing 70 in which is received the Venturi tube 26.
- the housing 70 has a groove 71 which receives an annular flange 72 which extends radially to from the upstream end 28 of the Venturi tube (26).
- the groove 71 of housing 70 is substantially of dimensions corresponding to the collar 72 so as to immobilize transversely and axially the Venturi tube 26 between the upstream end 30 of the tubular conduit 12 and a flange 31 of connection to a vehicle radiator.
- the flange 31 for connection to the vehicle radiator is fixed on the end 30 of the tubular inlet duct 12, by example by means of screws (not shown) which allow to exert an axial clamping force on both sides transverse of the flange 72 of the Venturi tube 26, and of thus achieve a good seal.
- This sealing can advantageously be completed by a flat annular seal (not shown) matching the shape of the collar 72 of the Venturi tube 26.
- the intake manifold 10 as shown consists of three easy assembly parts, which guarantees its low manufacturing cost and perfect sealing both fresh air than exhaust gas.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Description
- le conduit tubulaire d'admission d'air frais est rétréci radialement au niveau du col du Venturi pour délimiter axialement, entre l'extrémité amont du conduit tubulaire d'admission d'air frais et le col du Venturi, une chambre périphérique permettant le brassage des gaz d'échappement ;
- la chambre périphérique comporte à l'intérieur un logement dans lequel est rapporté le tube de Venturi et qui permet la fixation par coincement du tube de venturi lors de son assemblage entre l'extrémité amont du conduit tubulaire et une bride de liaison à un radiateur du véhicule ;
- le logement reçoit une collerette formée à l'extrémité amont du tube de Venturi ;
- le bloc d'alimentation est sensiblement parallélépipédique, le conduit tubulaire d'admission d'air frais débouchant dans sa face supérieure, et ses sorties d'alimentation débouchant dans une de ses faces latérales ;
- le bloc d'alimentation comporte dans au moins une de ses faces latérales des perçages réalisés à intervalles réguliers pour permettre sa fixation par vissage sur la culasse du moteur ;
- le collecteur d'admission est réalisé par moulage.
- la figure 1 est une vue en coupe selon son plan longitudinal médian d'un collecteur d'admission selon l'invention ;
- la figure 2 est une vue en perspective de l'assemblage d'un tube de venturi dans un collecteur conforme à l'invention ; et
- la figure 3 est une vue en coupe transversale dans un plan transversal médian 3-3 du collecteur d'admission.
Claims (7)
- Collecteur (10) d'admission pour l'alimentation en comburant d'un moteur de véhicule automobile, du type qui comporte un conduit tubulaire (12) d'admission d'air frais qui débouche dans un bloc d'alimentation (14) des cylindres comportant au moins une sortie (16) d'alimentation destinée à être montée en regard d'un conduit (56) d'alimentation correspondant pratiqué dans une culasse (58) du moteur, et du type dans lequel un tube d'arrivée (18) de gaz d'échappement recyclés, provenant d'un circuit d'échappement du véhicule, débouche, sensiblement radialement dans le conduit tubulaire (12) d'admission d'air frais, un tube (26) de Venturi étant agencé coaxialement dans le conduit tubulaire (12) d'admission d'air frais,
caractérisé en ce que l'extrémité amont (28) du tube (26) de Venturi coïncide sensiblement avec une extrémité amont (30) du conduit tubulaire (12) d'admission d'air frais, et en ce qu'une extrémité aval (32) du tube (26) de Venturi, ou col (32) du Venturi, est agencée en aval du tube d'arrivée (18) des gaz d'échappement pour délimiter entre le col (32) du Venturi et la paroi intérieure (34) du conduit tubulaire (12) d'admission d'air frais une zone d'aspiration (33) des gaz d'échappement, de telle sorte que les gaz d'échappement sont aspirés dans le conduit tubulaire (12) d'admission de façon parallèle au flux d'air frais. - Collecteur d'admission (10) selon la revendication précédente, caractérisé en ce que le conduit tubulaire (12) d'admission d'air frais est rétréci radialement au niveau du col (32) du Venturi pour délimiter axialement, entre l'extrémité amont (30) du conduit tubulaire d'admission d'air frais et le col (32) du Venturi, une chambre périphérique (36) permettant le brassage des gaz d'échappement.
- Collecteur d'admission (10) selon la revendication 2, caractérisé en ce que la chambre périphérique (36) comporte à l'intérieur un logement (70) dans lequel est rapporté le tube de Venturi (26) et qui permet la fixation par coincement du tube de Venturi (26) lors de son assemblage entre l'extrémité amont (30) du conduit tubulaire (12) et une bride (31) de liaison à un radiateur du véhicule.
- Collecteur d'admission (10) selon la revendication 3, caractérisé en ce que le logement (70) comporte au moins une gorge annulaire (71) dans laquelle est reçue une collerette (72) formée à l'extrémité amont (28) du tube (26) de Venturi.
- Collecteur d'admission (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que le bloc (14) d'alimentation est sensiblement parallélépipédique, le conduit tubulaire (12) d'admission d'air frais débouchant dans sa face (20) supérieure, et ses sorties (16) d'alimentation débouchant dans une de ses faces latérales (54).
- Collecteur d'admission (10) selon la revendication 5, caractérisé en ce que le bloc (14) d'alimentation comporte dans au moins une de ses faces latérales (54, 64) des perçages (60, 66) réalisés à intervalles réguliers pour permettre sa fixation par vissage sur la culasse (58) du moteur.
- Collecteur d'admission (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est réalisé par moulage.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9900371A FR2788565B1 (fr) | 1999-01-15 | 1999-01-15 | Collecteur d'admission comportant des moyens de raccordement a un circuit de recyclage des gaz d'echappement |
FR9900371 | 1999-01-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1020632A1 EP1020632A1 (fr) | 2000-07-19 |
EP1020632B1 true EP1020632B1 (fr) | 2004-06-23 |
Family
ID=9540879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00400089A Expired - Lifetime EP1020632B1 (fr) | 1999-01-15 | 2000-01-14 | Collecteur d'admission comportant des moyens de raccordement à un circuit de recyclage des gaz d'échappement |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1020632B1 (fr) |
DE (1) | DE60011683T2 (fr) |
ES (1) | ES2223411T3 (fr) |
FR (1) | FR2788565B1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10316803B2 (en) | 2017-09-25 | 2019-06-11 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
US10995705B2 (en) | 2019-02-07 | 2021-05-04 | Woodward, Inc. | Modular exhaust gas recirculation system |
US11174809B1 (en) | 2020-12-15 | 2021-11-16 | Woodward, Inc. | Controlling an internal combustion engine system |
US11215132B1 (en) | 2020-12-15 | 2022-01-04 | Woodward, Inc. | Controlling an internal combustion engine system |
US11293382B2 (en) | 2020-01-08 | 2022-04-05 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE517251C2 (sv) | 2000-08-30 | 2002-05-14 | Gustav Berggren | Komponent för reglering av avgasåterflöde |
SE522310C2 (sv) | 2001-03-02 | 2004-02-03 | Volvo Lastvagnar Ab | Anordning och förfarande för tillförsel av återcirkulerade avgaser |
US6439212B1 (en) | 2001-12-19 | 2002-08-27 | Caterpillar Inc. | Bypass venturi assembly and elbow with turning vane for an exhaust gas recirculation system |
US6640542B2 (en) | 2001-12-20 | 2003-11-04 | Caterpillar Inc | Bypass venturi assembly with single shaft actuator for an exhaust gas recirculation system |
US6659092B2 (en) | 2001-12-20 | 2003-12-09 | Caterpillar Inc | Bypass assembly with annular bypass venturi for an exhaust gas recirculation system |
US7543600B2 (en) | 2003-07-07 | 2009-06-09 | Varivent Innovations Ab | Arrangement for mixing a first and second gas flow with downstream control |
FR2861137B1 (fr) * | 2003-10-16 | 2008-03-07 | Renault Sa | Dispositif et procede de preparation d'un melange homogene de fluides gazeux pour moteur |
DE102011056896A1 (de) * | 2011-12-22 | 2013-06-27 | Leibniz-Institut Für Neue Materialien Gemeinnützige Gmbh | Verfahren zum Herstellen und Verwendung von Graphen auf polykristallinem Siliziumcarbid |
DE102012217285A1 (de) * | 2012-09-25 | 2014-06-12 | Bayerische Motoren Werke Aktiengesellschaft | Verbrennungsmotor |
ITRM20130103A1 (it) * | 2013-02-22 | 2014-08-23 | Piaggio & C Spa | Sistema di aspirazione dell'aria e di ricircolo dei gas di scarico per un motore diesel |
CN104047780B (zh) * | 2014-06-25 | 2017-02-22 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | 一种高增压发动机进气道设计方法 |
CN106015121A (zh) * | 2016-06-21 | 2016-10-12 | 武汉理工大学 | 空气射流式通风机 |
AT524259A1 (de) * | 2021-06-17 | 2022-04-15 | Avl List Gmbh | Einlasssammler für eine brennkraftmaschine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3662722A (en) * | 1970-04-22 | 1972-05-16 | Chrysler Corp | Cool exhaust recycling |
DE69612420T2 (de) * | 1995-03-14 | 2001-07-26 | Cummins Engine Co., Inc. | Turboaufgeladene Dieselbrennkraftmaschine |
IT1291509B1 (it) * | 1997-02-11 | 1999-01-11 | Fiat Ricerche | Motore a combustione a ciclo diesel, con ricircolo dei gas di scarico, provvisto di dispositivo miscelatore dei gas di ricircolo. |
-
1999
- 1999-01-15 FR FR9900371A patent/FR2788565B1/fr not_active Expired - Fee Related
-
2000
- 2000-01-14 ES ES00400089T patent/ES2223411T3/es not_active Expired - Lifetime
- 2000-01-14 EP EP00400089A patent/EP1020632B1/fr not_active Expired - Lifetime
- 2000-01-14 DE DE60011683T patent/DE60011683T2/de not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10316803B2 (en) | 2017-09-25 | 2019-06-11 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
US10634099B2 (en) | 2017-09-25 | 2020-04-28 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
US10995705B2 (en) | 2019-02-07 | 2021-05-04 | Woodward, Inc. | Modular exhaust gas recirculation system |
US11293382B2 (en) | 2020-01-08 | 2022-04-05 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
US11174809B1 (en) | 2020-12-15 | 2021-11-16 | Woodward, Inc. | Controlling an internal combustion engine system |
US11215132B1 (en) | 2020-12-15 | 2022-01-04 | Woodward, Inc. | Controlling an internal combustion engine system |
Also Published As
Publication number | Publication date |
---|---|
FR2788565A1 (fr) | 2000-07-21 |
EP1020632A1 (fr) | 2000-07-19 |
ES2223411T3 (es) | 2005-03-01 |
DE60011683T2 (de) | 2005-06-30 |
FR2788565B1 (fr) | 2001-02-09 |
DE60011683D1 (de) | 2004-07-29 |
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