WO1999053177A2 - Collecteur d'echappement pour moteur a combustion interne - Google Patents
Collecteur d'echappement pour moteur a combustion interne Download PDFInfo
- Publication number
- WO1999053177A2 WO1999053177A2 PCT/FR1999/000823 FR9900823W WO9953177A2 WO 1999053177 A2 WO1999053177 A2 WO 1999053177A2 FR 9900823 W FR9900823 W FR 9900823W WO 9953177 A2 WO9953177 A2 WO 9953177A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fixing
- flange
- exhaust
- collector according
- cavity
- Prior art date
Links
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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
Definitions
- the invention relates to exhaust manifolds for internal combustion engines, and more particularly those fitted to internal combustion engines associated with a means for purifying exhaust gases, in particular a priming catalyst, for example attached to the manifold. .
- An object of the invention is to provide such a collector whose thermal loss is as low as possible so as to reduce the priming time of the purification means.
- the invention also aims to ensure a gas velocity field as uniform as possible on the inlet face of the purification means.
- the invention also aims to allow easy mounting of the collector in the factory.
- the invention therefore provides an exhaust manifold for an internal combustion engine.
- this manifold comprises a fixing flange on the cylinder head of the engine, a large cavity for collecting exhaust gases connected to the flange to receive the exhaust gases delivered by the exhaust pipes. of the cylinder head, this large collection cavity having a re-entrant wall element, subdividing said cavity into two sub-cavities communicating with each other.
- the manifold also includes an end portion connected to the outlet of the collection cavity and having an outlet for exhaust gases.
- the re-entering wall element forms a household on the external surface of the collection cavity, a central trench extending substantially perpendicular to the plane of attachment of the flange, the two sub-cavities being symmetrical relative to the median plane of this central trench.
- This embodiment thus not only allows the large cavity formed by these two lungs to be easily produced, but it also allows, through the central trench, the easy passage of a screwdriver making it possible to make a point of attachment of the collector on the cylinder head.
- the large collection cavity has a substantial internal volume. More particularly, it has been observed that it is advantageous for the volume of the collection cavity to be greater than approximately 0.8 times the engine displacement so as to obtain a significant reduction in heat loss as well as good uniformity of the velocity field at the input of the purification means. Furthermore, and in particular for reasons of space, it is preferable that the volume of the collection cavity remains less than approximately 1.5 times the engine displacement.
- the volume of the collection cavity is chosen to be substantially equal to the engine displacement, which makes it possible to obtain an optimal compromise between the criteria of heat loss and uniformity of the speed field. and distribution, and size of the collector.
- the terminal part prefferably has substantially the shape of a bowl, which makes it possible to further increase the uniformity of the speed field.
- the terminal part preferably comprises an elliptical restriction diaphragm, the major axis of the ellipse being parallel to the plane of attachment of the fixing flange. This also contributes to obtaining a better uniformity of the speed field.
- the fixing flange advantageously has four inlet openings to receive the exhaust gases and five points of mounting on the cylinder head arranged in staggered rows around the four inlet openings. Furthermore, the line segment connecting the respective centers of two consecutive fixing zones passes substantially through the center of the opening located between these two fixing zones.
- Such an embodiment makes it possible to minimize the number of screws for fixing the manifold to the cylinder head, and consequently minimizes the production constraints linked to the passage of screwdrivers.
- the staggered arrangement of the fixing screws with the centers of two consecutive fixing zones aligned with the center of the inlet opening situated between these two fixing zones contribute to ensuring an excellent seal of the collector fixing. on the cylinder head.
- the manifold also comprises an intermediate connection part, connecting the fixing flange to the collection cavity and comprising exhaust ducts respectively connected to the inlet openings of the fixing flange.
- the exhaust ducts arranged at the ends of the intermediate connection part are advantageously convergent. Therefore, all the exhaust ducts allow the flow of exhaust gases to be forced towards the center of the manifold, which further contributes to obtaining a uniform velocity field on the entry face of the means d purification.
- this intermediate connection part contributes to increasing the rigidity of the manifold.
- FIG. 1 schematically represents a collector according to the invention
- FIG. 2 is the section along line II-II of FIG. 1,
- FIG. 5 represents the section along the line V-V of FIG. 2, and,
- FIG. 6 is a view along arrow F of Figure 2.
- the reference 1 generally designates a exhaust manifold according to the invention.
- This manifold has a fixing flange 2 comprising 5 fixing holes 20-24 making it possible to fix the manifold by screws on the cylinder head of the engine.
- the manifold also includes a large exhaust gas collection cavity, referenced 3, and connected to the fixing flange by an intermediate connection part 5.
- This large collection cavity 3 is extended by a terminal connection part 4 comprising a part 41 having substantially the shape of a bowl followed by a fixing flange 42 having an outlet orifice 49 for the exhaust gases and on which is fixed, here by welding, a CT initiation catalyst.
- the outlet orifice 40 of the bowl 41 is a restriction diaphragm having an elliptical section (FIG. 4) with the major axis of the ellipse parallel to the plane of attachment of the manifold on the cylinder head.
- the large cavity 3 for collecting the exhaust gases, coming from molding carries a re-entrant wall element 32 providing on the external surface of the cavity 3 a central trench 34, and thus producing two symmetrical side parts 30 and 31.
- the collection cavity 3 is thus subdivided into two sub-cavities 300 and 310 communicating with each other at the level of the narrowed section 320 of the cavity 3 located in the plane of symmetry thereof.
- each lateral part 30, 31 comprises a re-entrant wall element 39, 38 providing two auxiliary trenches 37, 36 on the external surface of these lateral parts.
- the attachment zones 22 and 23 are located respectively in the extension of the auxiliary trenches 37 and 36 also allowing easy passage of automatic screwdrivers.
- the fixing flange 2 has four openings 01-04 corresponding to the four exhaust pipes formed in the cylinder head and connected to the four cylinders of the engine.
- the fixing holes 20 to 24 are located staggered around these openings 01-04.
- the center of each inlet opening of the mounting flange is substantially aligned with the centers of the two fixing holes arranged on either side of this inlet opening.
- the intermediate connection part 5 comprises four exhaust ducts 51-54 extending the exhaust pipes of the cylinder head. As illustrated more particularly in FIG. 6, the axes A51 and A54 of the two exhaust ducts located at the end of the intermediate connection part 5 converge. Thus, all of the exhaust pipes 51-54 and in particular the two end pipes, make it possible to force the flow of the exhaust gases towards the center of the manifold.
- an opening 35 to receive any sensor or probe and in particular a measurement probe of the oxygen concentration, commonly called by a person skilled in the art “lambda probe", and conventionally used in the richness control loops of the engine.
- the location of this opening 35 allows central positioning of the lambda sensor SL, which is particularly advantageous.
- the invention makes it possible to obtain an exhaust manifold with attached ignition catalyst, particularly effective in particular with regard to heat loss but also with regard to the uniformity of the speed field of the gases delivered to the ignition catalyst. .
- the bowl 41 allows even better homogenization of the gases in particular by causing a vortex movement MC (FIG.
- the invention which has just been described is not limited to an exhaust manifold equipped with an attached priming catalyst, but is suitable for any means of purifying gases such as a three-way catalyst. functional, a particulate filter, a NO ⁇ trap ("NO - trap”), an SO ⁇ trap ("SO ⁇ -trap”), etc., whether it is attached to the collector or else connected to that -this by a tube portion for example.
- NO - trap NO ⁇ trap
- SO ⁇ trap SO ⁇ trap
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/646,900 US6324839B1 (en) | 1998-04-09 | 1999-04-09 | Exhaust manifold for internal combustion engines |
BR9909524-6A BR9909524A (pt) | 1998-04-09 | 1999-04-09 | Coletor de escapamento para motor de combustão interna |
KR1020007011219A KR20010074478A (ko) | 1998-04-09 | 1999-04-09 | 내연 기관의 배기 매니폴드 |
JP2000543708A JP2002511547A (ja) | 1998-04-09 | 1999-04-09 | 内燃エンジン用の排気集合管 |
EP99913369A EP1108125A2 (fr) | 1998-04-09 | 1999-04-09 | Collecteur d'echappement pour moteur a combustion interne |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9804472A FR2777320B1 (fr) | 1998-04-09 | 1998-04-09 | Collecteur d'echappement pour moteur a combustion interne |
FR98/04472 | 1998-04-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999053177A2 true WO1999053177A2 (fr) | 1999-10-21 |
WO1999053177A3 WO1999053177A3 (fr) | 2001-04-12 |
Family
ID=9525079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/000823 WO1999053177A2 (fr) | 1998-04-09 | 1999-04-09 | Collecteur d'echappement pour moteur a combustion interne |
Country Status (7)
Country | Link |
---|---|
US (1) | US6324839B1 (fr) |
EP (1) | EP1108125A2 (fr) |
JP (1) | JP2002511547A (fr) |
KR (1) | KR20010074478A (fr) |
BR (1) | BR9909524A (fr) |
FR (1) | FR2777320B1 (fr) |
WO (1) | WO1999053177A2 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19938689A1 (de) * | 1999-08-14 | 2001-02-15 | Volkswagen Ag | Abgassammelrohr aus Blech für mehrzylindrige Verbrennungsmotoren |
WO2003056146A3 (fr) * | 2001-12-28 | 2003-10-02 | Eberspaecher J Gmbh & Co | Element de raccordement |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19905032A1 (de) * | 1999-02-08 | 2000-08-10 | Emitec Emissionstechnologie | Abgassystem mit wenigstens einer Leitfläche |
DE10034538A1 (de) * | 2000-07-15 | 2002-01-24 | Eberspaecher J Gmbh & Co | Abgaskrümmer |
KR100482874B1 (ko) * | 2001-12-14 | 2005-04-14 | 현대자동차주식회사 | 촉매컨버터의 정화효율 및 수명 향상을 위한 배기매니폴드 |
DE20303759U1 (de) * | 2003-03-10 | 2004-07-22 | Friedrich Boysen Gmbh & Co. Kg | Abgasanlage einer Brennkraftmaschine |
US20050150222A1 (en) * | 2003-12-30 | 2005-07-14 | Kalish Martin W. | One piece catalytic converter with integral exhaust manifold |
KR100692823B1 (ko) * | 2005-06-28 | 2007-03-09 | 엘지전자 주식회사 | 플라즈마 디스플레이 장치 및 그 화상처리 방법 |
DE102006012365B4 (de) * | 2006-03-17 | 2014-02-13 | Man Diesel & Turbo Se | Abgasleitungssystem für mehrzylindrige Gas- und Dieselmotoren |
US8347615B2 (en) * | 2006-06-07 | 2013-01-08 | Ford Global Technologies | Exhaust flow director and catalyst mount for internal combustion engine |
JP4748081B2 (ja) * | 2007-02-23 | 2011-08-17 | トヨタ自動車株式会社 | 内燃機関の排気装置 |
FR2991714B1 (fr) | 2012-06-07 | 2017-06-09 | Renault Sas | Systeme de collecte et d'epuration de gaz d'echappement |
DE102015216830A1 (de) * | 2015-09-03 | 2017-03-09 | Volkswagen Aktiengesellschaft | Verfahren sowie Vorrichtung zur Abgasnachbehandlung einer Brennkraftmaschine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372112A (en) * | 1980-07-01 | 1983-02-08 | Ford Motor Company | Thin-walled exhaust gas manifold casting |
DE3528136A1 (de) * | 1985-08-06 | 1987-02-19 | Opel Adam Ag | Abgaskruemmer einer doppelrohrabgasleitung fuer mehrzylindrige brennkraftmaschinen |
FR2663986A1 (fr) * | 1990-06-29 | 1992-01-03 | Peugeot | Collecteur d'echappement pour moteur a combustion interne, et moteur a combustion interne comportant un tel collecteur. |
JPH051533A (ja) * | 1991-06-25 | 1993-01-08 | Aisin Takaoka Ltd | 内燃機関の排気マニホルド |
JPH074238A (ja) * | 1993-06-15 | 1995-01-10 | Mazda Motor Corp | エンジンの排気装置 |
JPH0925841A (ja) * | 1995-07-11 | 1997-01-28 | Aichi Mach Ind Co Ltd | エキゾーストマニホールド |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2849858A (en) * | 1954-09-29 | 1958-09-02 | Gen Motors Corp | Exhaust system for engines |
CA1048358A (fr) * | 1975-04-30 | 1979-02-13 | Shuichi Yamazaki | Collecteur d'echappement pour moteurs a combustion interne |
JPS5851214A (ja) * | 1981-09-22 | 1983-03-25 | Ngk Insulators Ltd | 内燃機関用排気ガス系機器 |
AT397416B (de) * | 1987-05-22 | 1994-04-25 | Steyr Daimler Puch Ag | Abgaseinrichtung für mehrzylinder- brennkraftmaschinen |
DE4315086A1 (de) * | 1993-05-06 | 1994-11-10 | Roth Technik Gmbh | Flansch für Rohrkrümmer an Verbrennungsmotoren |
US5349817A (en) * | 1993-11-12 | 1994-09-27 | Benteler Industries, Inc. | Air gap manifold port flange connection |
DE19505710C2 (de) * | 1994-02-21 | 2002-10-17 | Aisin Takaoka Ltd | Auspuffkrümmer |
US5953912A (en) * | 1996-09-10 | 1999-09-21 | Honda Giken Kobyo Kabushiki Kaisha | Exhaust manifold of a multi-cylinder internal combustion engine |
-
1998
- 1998-04-09 FR FR9804472A patent/FR2777320B1/fr not_active Expired - Fee Related
-
1999
- 1999-04-09 EP EP99913369A patent/EP1108125A2/fr not_active Withdrawn
- 1999-04-09 US US09/646,900 patent/US6324839B1/en not_active Expired - Fee Related
- 1999-04-09 BR BR9909524-6A patent/BR9909524A/pt not_active Application Discontinuation
- 1999-04-09 JP JP2000543708A patent/JP2002511547A/ja not_active Withdrawn
- 1999-04-09 KR KR1020007011219A patent/KR20010074478A/ko not_active Application Discontinuation
- 1999-04-09 WO PCT/FR1999/000823 patent/WO1999053177A2/fr not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372112A (en) * | 1980-07-01 | 1983-02-08 | Ford Motor Company | Thin-walled exhaust gas manifold casting |
DE3528136A1 (de) * | 1985-08-06 | 1987-02-19 | Opel Adam Ag | Abgaskruemmer einer doppelrohrabgasleitung fuer mehrzylindrige brennkraftmaschinen |
FR2663986A1 (fr) * | 1990-06-29 | 1992-01-03 | Peugeot | Collecteur d'echappement pour moteur a combustion interne, et moteur a combustion interne comportant un tel collecteur. |
JPH051533A (ja) * | 1991-06-25 | 1993-01-08 | Aisin Takaoka Ltd | 内燃機関の排気マニホルド |
JPH074238A (ja) * | 1993-06-15 | 1995-01-10 | Mazda Motor Corp | エンジンの排気装置 |
JPH0925841A (ja) * | 1995-07-11 | 1997-01-28 | Aichi Mach Ind Co Ltd | エキゾーストマニホールド |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 263 (M-1415), 24 mai 1993 (1993-05-24) & JP 05 001533 A (AISIN TAKAOKA LTD), 8 janvier 1993 (1993-01-08) * |
PATENT ABSTRACTS OF JAPAN vol. 095, no. 004, 31 mai 1995 (1995-05-31) & JP 07 004238 A (MAZDA MOTOR CORP), 10 janvier 1995 (1995-01-10) * |
PATENT ABSTRACTS OF JAPAN vol. 097, no. 005, 30 mai 1997 (1997-05-30) & JP 09 025841 A (AICHI MACH IND CO LTD), 28 janvier 1997 (1997-01-28) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19938689A1 (de) * | 1999-08-14 | 2001-02-15 | Volkswagen Ag | Abgassammelrohr aus Blech für mehrzylindrige Verbrennungsmotoren |
WO2003056146A3 (fr) * | 2001-12-28 | 2003-10-02 | Eberspaecher J Gmbh & Co | Element de raccordement |
Also Published As
Publication number | Publication date |
---|---|
BR9909524A (pt) | 2001-01-09 |
JP2002511547A (ja) | 2002-04-16 |
FR2777320B1 (fr) | 2000-09-22 |
KR20010074478A (ko) | 2001-08-04 |
FR2777320A1 (fr) | 1999-10-15 |
EP1108125A2 (fr) | 2001-06-20 |
US6324839B1 (en) | 2001-12-04 |
WO1999053177A3 (fr) | 2001-04-12 |
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