EP0712998B1 - Vanne de coupure pour circuit d'injection d'air à l'échappement de moteur à combustion interne - Google Patents
Vanne de coupure pour circuit d'injection d'air à l'échappement de moteur à combustion interne Download PDFInfo
- Publication number
- EP0712998B1 EP0712998B1 EP19950402504 EP95402504A EP0712998B1 EP 0712998 B1 EP0712998 B1 EP 0712998B1 EP 19950402504 EP19950402504 EP 19950402504 EP 95402504 A EP95402504 A EP 95402504A EP 0712998 B1 EP0712998 B1 EP 0712998B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- valve
- air
- membrane
- gate according
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 4
- 239000012528 membrane Substances 0.000 claims description 16
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 240000007817 Olea europaea Species 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
- F01N3/227—Control of additional air supply only, e.g. using by-passes or variable air pump drives using pneumatically operated valves, e.g. membrane valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
Definitions
- the present invention relates to a cut-off valve for an injection circuit of air to the exhaust of an internal combustion engine.
- the present invention aims to overcome this drawback.
- the invention relates to a cut-off valve according to the claim 1.
- FIG. 1 An air pump 1 driven by a motor electric 2. This pump receives outside air through a duct 3, from either an individual air filter or the main air filter intake of the engine for which this circuit is intended.
- Pump 1 delivers pressurized air through line 4.
- This line 4 is divides into two conduits 5 and 6, both connected to the valve 7 according to the invention.
- the outlet of this valve is connected by a conduit 8 to the air injection manifold in the engine exhaust manifold.
- the valve 7, shown in section in FIG. 2, comprises a valve body, or housing, 9 delimiting a plurality of chambers.
- a first chamber 10 is formed in the body 9 and delimited by a wall 11 and a membrane 12.
- the face of the membrane 12, external to the chamber 10, is protected by a cover 13, in which are formed by holes 14 for venting.
- An inlet 15 in the room 10 is formed by an inlet duct 16, to which the tube 5 can be fixed, by example using a necklace
- the wall 11 forms a guide tube 17 in which can slide a valve stem 18 19.
- the rod 18 is fixed to the center of the membrane 12.
- a spring 20 helical, arranged around the guide tube 12, between the wall 11 and the valve 19, pushes the latter away from this wall.
- the valve 19 cooperates with a valve seat 21, formed at the periphery an orifice 22, drilled in the center of a disc 23, fixed anyway suitable in the body 9.
- the disc 23 delimits with this body 9 and the wall 11 a second chamber 24.
- An inlet 25 in the chamber 24 is connected to an intake duct 26, to which the duct can be connected 6, for example by means of a collar.
- Port 22 forms the exit from the chamber 24.
- the body 9 and the disc 23 define a third chamber 27 with a valve support 28.
- the support 28 is fixed to the lower part of the body main 9 by crimping a secondary body 29 delimiting, with the support 28, a fourth chamber 30.
- the fourth chamber 30 corresponds with the third chamber 27, for by means of a non-return valve, formed by the support 28 pierced with holes for communication, and supporting in its center on the side of the chamber 30, a rubber membrane 31, pressed against the communication holes of the support 28 by a metallic elastic blade 32.
- a cone 33 also fixed to the central part of the support 28 makes it possible to limit the travel of the diaphragm 31 and spring 32. It is understood that the air passing through the valve can move from room 27 to room 30, not from room 30 to the room 27.
- a conduit 34 forms the outlet of the chamber, and is provided with an olive 35 and a nut 36, allowing it to be connected to the tube 8 for connection with the manifold exhaust.
- pump 1 delivers air under pressure in ducts 5 and 6.
- the air discharged into duct 5 causes a pressure increase in chamber 10, and consequently a deformation of the membrane 12 which raises the valve 19 against spring action 20.
- valve 19 being thus opened, the air discharged into the duct 6 is introduced in chamber 24, then through orifice 22, in chamber 27. This air passes through then the non-return valve 31-33 to be discharged into the chamber 30, and there, in conduit 8.
- the valve 31-33 opposes, in operation, the gas discharge exhaust from line 8 to lines 5 and 6.
- valve 7 ′ of the embodiment of FIG. 3 is practically identical to the valve 7, except that the chamber 10 no longer has its orifice inlet 15 and its intake duct 16. This orifice is replaced by a orifice 37, formed in the wall 11, separating the first chamber 10 from the room 24.
- the air from pump 1 is then admitted into room 10 by through the tube 6, the conduit 26, the chamber 24 and the orifice 37.
- valve 7 ' is identical to that of valve 7.
- valve 7 "of FIG. 4 differs from the valves of FIGS. 2 and 3 essentially by the fact that the head and the seat of the valve 19 separating the second and third rooms 24 and 27 respectively, are in this third chamber 27. This valve therefore opens in the opposite direction to those previously described.
- a cavity is delimited between a flange 40 of the body 9 and a cover 41.
- the membrane 12 and this cover 41 define the first chamber 10 inside this cavity.
- the stem 42 of the valve is hollow so as to form a passage suitable for make the first room 10 communicate with the second room 24.
- an axial duct 43 is formed in the rod 42 and opens into the chamber 24 by radial orifices 44 and in chamber 10 by an orifice axial 45.
- a second membrane 46 is applied against the orifice 45 by a spring 47 housed in a blind hole 48 of the cover 41. Furthermore, the membrane 12, and consequently the valve 19 of which it is integral and its orifice 45 are also biased towards the membrane 46 by a spring 49.
- a set of holes 50 connects the first chamber 10 with the third chamber 27.
- a non-return valve 51 housed in the cover 41 and calibrated by a spring 52 prevents any flow from the chamber 27 to the room 10.
- the valve could also just as easily be housed in the body of the housing.
- control pressure la valve 19 is brought into chamber 10 through the chamber 24 and, here, of the conduit 43.
- this pressure reaches a sufficient threshold, the membrane 46 lets it enter chamber 10.
- Membrane 12 then sinks, opening the valve 19.
- valve 51 prevents cyclic overpressures occurring in the exhaust manifold, go back up into chamber 10 and thus disturbing the operation of the valve 19.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Temperature-Responsive Valves (AREA)
Description
La vanne de coupure elle-même était une vanne à membrane qui était commandée par une vanne à solénoïde prélevant sa pression négative sur la tubulure d'admission en aval de la vanne papillon. La vanne à solénoïde était elle-même commandée par l'intermédiaire du même relais électrique qui commandait le fonctionnement de la pompe à air.
- la figure 1 représente un circuit d'injection d'air à l'échappement comprenant une vanne,
- la figure 2 représente cette vanne vue en coupe axiale,
- la figure 3 représente un autre mode de réalisation de cette vanne, et
- la figure 4 représente une vanne selon l'invention.
Claims (8)
- Vanne de coupure pour circuit d'injection d'air à l'échappement de moteur à combustion interne, comprenant :un boítier (9) ;une membrane (12) délimitant une première chambre (10) dans ledit boítier ;une deuxième chambre (24) dans ledit boítier ;des moyens (26) d'admission d'air dans ladite deuxième chambre (24) à partir d'une pompe à air (1) ;des moyens d'admission d'air dans ladite première chambre (10) à partir de ladite deuxième chambre (24), ces moyens comprenant un passage (43) entre lesdites première (10) et deuxième (24) chambres, formé dans la tige d'une soupape (19) ;une troisième chambre (27) dans ledit boítier (9) ;des moyens de sortie d'air de ladite troisième chambre (27) en direction du collecteur d'échappement dudit moteur ; etune soupape (19) commandée par ladite membrane (12) pour mettre en communication lesdites deuxième (24) et troisième (27) chambres lorsque la pompe à air (1) est en fonctionnement,
- Vanne selon la revendication 1, dans laquelle ledit passage (43) débouche axialement dans la première chambre (10), son orifice étant, au repos, bouché par un organe de bouchage sollicité par un ressort (47).
- Vanne selon la revendication 2, dans laquelle ledit organe de bouchage comprend une deuxième membrane (46).
- Vanne selon l'une quelconque des revendications 1 à 3, dans laquelle ladite membrane (12) est sollicitée par un ressort (49) sur sa face opposée à ladite première chambre (10).
- Vanne selon l'une quelconque des revendications 1 à 4, dans laquelle ladite première chambre (10) est reliée à ladite troisième chambre (27) par un conduit d 'évacuation (50).
- Vanne selon la revendication 5, dans laquelle un clapet anti-retour taré (51, 52) est disposé sur ledit conduit d'évacuation (50).
- Vanne selon l'une quelconque des revendications 5 et 6, dans laquelle ledit conduit d'évacuation (50) est formé dans l'épaisseur de la paroi du boítier (9).
- Vanne selon la revendication 1, dans laquelle lesdits moyens d'admission d'air, dans la première chambre (10) comprennent un conduit d'amenée d'air en provenance de la pompe d'air.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9413757A FR2727156B1 (fr) | 1994-11-17 | 1994-11-17 | Vanne de coupure pour circuit d'injection d'air a l'echappement de moteur a combustion interne |
FR9413757 | 1994-11-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0712998A1 EP0712998A1 (fr) | 1996-05-22 |
EP0712998B1 true EP0712998B1 (fr) | 2003-03-05 |
Family
ID=9468876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19950402504 Expired - Lifetime EP0712998B1 (fr) | 1994-11-17 | 1995-11-09 | Vanne de coupure pour circuit d'injection d'air à l'échappement de moteur à combustion interne |
Country Status (5)
Country | Link |
---|---|
US (1) | US5699664A (fr) |
EP (1) | EP0712998B1 (fr) |
JP (1) | JP3665117B2 (fr) |
DE (1) | DE69529795T2 (fr) |
FR (1) | FR2727156B1 (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2308989B (en) * | 1996-01-12 | 1997-11-19 | Steven Valisko | Exhaust manifold device |
GB2310479A (en) * | 1996-02-24 | 1997-08-27 | Alco Valves Ltd | Actuator controlled valve |
GB2344614B (en) * | 1998-12-11 | 2000-11-08 | Steven Valisko | Exhaust manifold device |
DE19918471A1 (de) * | 1999-04-23 | 2000-10-26 | Bayerische Motoren Werke Ag | Sekundärluftventil zur Zuführung von Zusatzluft zum Abgasstrom einer Brennkraftmaschine |
FR2794069B1 (fr) | 1999-05-28 | 2002-08-09 | Valeo Climatisation | Distributeur d'air d'un dispositif de chauffage-ventilation et/ou climatisation d'un vehicule automobile |
US7086636B2 (en) | 2002-07-02 | 2006-08-08 | Borgwarner Inc. | Gaseous fluid metering valve |
DE10240265B4 (de) * | 2002-08-31 | 2005-09-01 | Daimlerchrysler Ag | Kombiventil |
CN100385097C (zh) * | 2002-12-26 | 2008-04-30 | 株式会社三国 | 隔膜式空气阀及内燃机的2次空气控制装置 |
DE102004027413B4 (de) * | 2004-06-04 | 2007-03-29 | Hohmann, Jörg | Schalteinrichtung für ein hydraulisches Hochdrucksystem |
CN101171416A (zh) | 2005-03-08 | 2008-04-30 | 博格华纳公司 | 具有休止位置的egr阀 |
CN100422517C (zh) * | 2006-02-14 | 2008-10-01 | 重庆宗申技术开发研究有限公司 | 复合型空气泵 |
US9291280B2 (en) | 2012-07-12 | 2016-03-22 | Fisher Controls International, Llc | Actuator apparatus having internal passageways |
US9989162B2 (en) * | 2013-08-27 | 2018-06-05 | Profire Energy, Inc | Dual cartridge temperature control valve |
US9458947B2 (en) * | 2014-02-25 | 2016-10-04 | Fisher Controls International Lc | Actuator apparatus with internal tubing and anti-rotation mechanism |
US12066123B2 (en) * | 2022-08-31 | 2024-08-20 | Dresser, Llc | Integrating fluid pathways into a valve superstructure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3748855A (en) * | 1972-04-20 | 1973-07-31 | Gen Motors Corp | Reactor air flow control valve |
US3905193A (en) * | 1974-02-25 | 1975-09-16 | Gen Motors Corp | Air diverter valve and controlling means therefor |
US3924408A (en) * | 1974-10-31 | 1975-12-09 | Gen Motors Corp | Diverter valve and pressure regulator assembly |
US4070830A (en) * | 1976-10-22 | 1978-01-31 | General Motors Corporation | Integral air switching diverter valve |
JPS5412030A (en) * | 1977-06-28 | 1979-01-29 | Toyota Motor Corp | Exhaust gas purifying equipment of internal combustion engine |
GB2251917A (en) * | 1991-01-19 | 1992-07-22 | Ford Motor Co | Gas flow control valve. |
FR2674288A1 (fr) * | 1991-03-21 | 1992-09-25 | Borg Warner Automotive Electro | Soupape de commande et de non-retour d'air secondaire. |
-
1994
- 1994-11-17 FR FR9413757A patent/FR2727156B1/fr not_active Expired - Lifetime
-
1995
- 1995-11-09 DE DE1995629795 patent/DE69529795T2/de not_active Expired - Lifetime
- 1995-11-09 EP EP19950402504 patent/EP0712998B1/fr not_active Expired - Lifetime
- 1995-11-15 US US08/559,387 patent/US5699664A/en not_active Expired - Lifetime
- 1995-11-16 JP JP29824995A patent/JP3665117B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH08232651A (ja) | 1996-09-10 |
FR2727156B1 (fr) | 1996-12-27 |
FR2727156A1 (fr) | 1996-05-24 |
DE69529795D1 (de) | 2003-04-10 |
JP3665117B2 (ja) | 2005-06-29 |
EP0712998A1 (fr) | 1996-05-22 |
US5699664A (en) | 1997-12-23 |
DE69529795T2 (de) | 2004-02-12 |
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