EP0933509A1 - Exhaust manifold - Google Patents

Exhaust manifold Download PDF

Info

Publication number
EP0933509A1
EP0933509A1 EP98118632A EP98118632A EP0933509A1 EP 0933509 A1 EP0933509 A1 EP 0933509A1 EP 98118632 A EP98118632 A EP 98118632A EP 98118632 A EP98118632 A EP 98118632A EP 0933509 A1 EP0933509 A1 EP 0933509A1
Authority
EP
European Patent Office
Prior art keywords
sliding seat
section
pipe
exhaust manifold
connection
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.)
Granted
Application number
EP98118632A
Other languages
German (de)
French (fr)
Other versions
EP0933509B2 (en
EP0933509B1 (en
Inventor
Johannes Bussmann
Andreas Dr.-Ing. Fritz
Jürgen Dipl.-Ing. Kleinschmidt
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.)
Benteler Deustchland GmbH
Original Assignee
Benteler Deustchland GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7855927&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0933509(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Benteler Deustchland GmbH filed Critical Benteler Deustchland GmbH
Publication of EP0933509A1 publication Critical patent/EP0933509A1/en
Application granted granted Critical
Publication of EP0933509B1 publication Critical patent/EP0933509B1/en
Publication of EP0933509B2 publication Critical patent/EP0933509B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1883—Construction facilitating manufacture, assembly, or disassembly manufactured by hydroforming
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled

Abstract

The exhaust manifold has sliding seat sockets (15,16), which are formed by internal high pressure forming of the outer radius (Ra) of a tube bend (17,18). Socket and/or pipe connections (10,13) have sloping ends. The ratio between socket length and tube bend diameter is approx. 0,5. The socket of one T-section (5) engages over the pipe connection (10) of the end section (4), and the socket (16) of the other T-section (6) engages over the pipe connection (13) of the first T-section.

Description

Die Erfindung betrifft einen Abgaskrümmer gemäß den Merkmalen im Oberbegriff des Anspruchs 1.The invention relates to an exhaust manifold according to the features in the preamble of claim 1.

Ein solcher Abgaskrümmer umfasst einen gebogenen Endabschnitt, an den sich üblicherweise zwei T-Abschnitte angliedern. Der Endabschnitt und die T-Abschnitte weisen einen Flanschanschluss und einen Rohranschluss auf. Desweiteren besitzen die T-Abschnitte einen Schiebesitzstutzen.Such an exhaust manifold comprises a curved end section, to which usually two T sections are attached. The end section and the T sections point a flange connection and a pipe connection. Furthermore the T-sections have a sliding seat socket.

Über den Flanschanschluss sind die T-Abschnitte ebenso wie der Endabschnitt mit einem Kopfflansch zur motorseitigen Anbindung des Abgaskrümmers verbunden. Um einen Dehnungsausgleich zu ermöglichen, sind der Endabschnitt und die T-Abschnitte jeweils über Schiebesitze miteinander verbunden. Hierzu übergreift der Schiebesitzstutzen eines T-Abschnitts den Rohranschluss des Endabschnitts bzw. den Rohranschluss eines benachbarten T-Abschnitts endseitig.The T sections are also via the flange connection like the end section with a head flange on the motor side Connection of the exhaust manifold connected. To one The end section is to enable expansion compensation and the T-sections with each other via sliding seats connected. To do this, the sliding seat socket extends a T-section the pipe connection of the end section or the pipe connection of an adjacent T-section end.

Die T-Abschnitte des Abgaskrümmers werden aus einem geraden Rohrabschnitt hergestellt. Hierzu wird mittels hydraulischem Innenhochdruck eine im wesentlichen rechtwinklig zur Rohrachse abstehende stutzenförmige Ausbauchung erzeugt. Diese wird endseitig durch einen Sägeschnitt geöffnet. Auf diese Weise wird der Flanschanschluss hergestellt. Der Schiebesitzstutzen wird von einem Ende des Ausgangsrohrs gebildet.The T-sections of the exhaust manifold are made from a straight line Pipe section made. To do this, use hydraulic high pressure is essentially rectangular Spout-shaped bulge protruding from the pipe axis generated. This is cut at the end by a saw cut open. In this way the flange connection manufactured. The sliding seat socket is from one end of the output pipe is formed.

Nachteilig hieran ist, dass die Länge des Flanschanschlusses aufgrund der hydroformtechnischen Ausbildung begrenzt ist, und zwar auf maximal das Ein- bis Zweifache des Durchmessers eines Ausgangsrohrs. Eine größere Länge des Flanschanschlusses könnte zu einer unzulässigen Materialverdünnung führen. Die Auslegung anderer Bauteilkomponenten muss daher auf die kurze Flanschlänge abgestimmt werden. Auch die Festlegung des Kopfflansches wird hierdurch erschwert. Ferner werden die Einbaubedingungen des Abgaskrümmers beeinträchtigt, da die Anschlagpunkte für die Festlegung am Motor schwerer zugänglich sind. Damit stoßen die konstruktive Gestaltung und der technischen Einsatz eines solchen Abgaskrümmers an ihre Grenzen.The disadvantage of this is that the length of the flange connection due to the hydroforming training is limited to a maximum of one to two times the diameter of an outlet pipe. A greater length of the flange connection could lead to an impermissible thinning of the material to lead. The design of other component parts must therefore be matched to the short flange length become. This also defines the top flange difficult. Furthermore, the installation conditions of the Exhaust manifold affected because the anchor points for the fixing on the engine is more difficult to access. In order to encounter the constructive design and the technical Use of such an exhaust manifold to its limits.

Der Erfindung liegt daher ausgehend vom Stand der Technik die Aufgabe zugrunde, einen in seiner Funktionalität verbesserten Abgaskrümmer zu schaffen.The invention is therefore based on the prior art based on the task of improving its functionality To create exhaust manifolds.

Die Lösung dieser Aufgabe besteht nach der Erfindung in den Merkmalen des Anspruchs 1.According to the invention, this object is achieved in the features of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung bilden Gegenstand der abhängigen Ansprüche 2 bis 4. Advantageous refinements of the invention form the subject matter of dependent claims 2 to 4.

Kernpunkt der Erfindung bildet die Maßnahme, den Schiebesitzstutzen durch Innenhochdruckformung am Außenradius eines Rohrbogens zu formen.The key point of the invention is the measure, the sliding seat socket due to internal high pressure molding on the outer radius to form a pipe bend.

Als Ausgangsrohr kommt ein gebogenes Rohr zum Einsatz. Für den Schiebesitzstutzen wird zunächst am Außenradius des Rohrbogens eine Ausbauchung hydraulisch erzeugt. Diese wird endseitig durch einen Sägeschnitt geöffnet. Vorzugsweise ist der Sägeschnitt schräg zur vertikalen Querebene der Ausbauchung bzw. des Rohranschlusses eines T-Stücks geführt.A curved tube is used as the output tube. For the sliding seat socket is first on the outer radius of the pipe bend hydraulically generated a bulge. This is opened at the end by a saw cut. The saw cut is preferably oblique to the vertical Transverse plane of the bulge or the pipe connection of a T-piece led.

Der Flanschanschluss eines T-Stücks kann den technischen bzw. konstruktiven Anforderungen entsprechend lang ausgeführt sein. Hierdurch wird sowohl der Anbau des Kopfflansches als auch die Montage des Abgaskrümmers am Motor erleichtert.The flange connection of a T-piece can be technical or design requirements are carried out for a correspondingly long time be. As a result, both the attachment of the head flange as well as the assembly of the exhaust manifold on the engine.

Die Länge eines Schiebesitzstutzens kann verhältnismäßig kurz gehalten werden. Für die Praxis bietet sich ein Verhältnis der Länge des Schiebesitzstutzens zum Durchmesser eines Rohrbogens von etwa 0,3 bis 0,7, vorzugsweise 0,5, an. Auf diese Weise ist eine vorteilhafte hydroformtechnische Herstellung des Schiebesitzstutzens möglich, ohne dass eine Materialverdünnung zu befürchten ist.The length of a sliding seat socket can be proportionate be kept short. There is a relationship in practice the length of the sliding seat socket to the diameter a pipe bend of about 0.3 to 0.7, preferably 0.5, on. This is an advantageous hydroforming technique Manufacture of the sliding seat socket possible without that material thinning is to be feared.

Der Schiebesitz zwischen Endabschnitt und anschließendem T-Abschnitt bzw. zwischen den T-Abschnitten untereinander wird durch das Ineinanderführen des jeweiligen Schiebesitzstutzens mit dem Rohranschluss gewährleistet. Hierzu ist es zweckmäßig, dass der Schiebesitzstutzen den jeweiligen Rohranschluss übergreift. Damit wird eine zuverlässige Abgasführung gewährleistet. Für die Praxis ist es ferner vorteilhaft, wenn die in den Schiebesitzstutzen eintauchenden Enden der Rohranschlüsse abgeschrägt sind, und zwar so, dass sie sich der Kontur eines Rohrbogens anpassen. Auf diese Weise wird eine Beeinträchtigung der Abgasführung bzw. Strömungsverhältnisse in dem Rohrverbund vermieden.The sliding seat between the end section and subsequent T section or between the T sections with each other is achieved by inserting the respective sliding seat socket guaranteed with the pipe connection. For this it is appropriate that the sliding seat socket the respective Grips pipe connection. It will be a reliable Exhaust gas routing guaranteed. For practice it is also advantageous if the in the sliding seat socket immersed ends of the pipe connections are chamfered, in such a way that they follow the contour of a pipe bend to adjust. In this way, an impairment of Exhaust gas routing or flow conditions in the pipe network avoided.

Im Rahmen der Erfindung ist auch eine doppelwandige Ausbildung des Abgaskrümmers möglich.A double-walled design is also within the scope of the invention of the exhaust manifold possible.

Die Erfindung ist nachfolgend anhand eines in der Abbildung dargestellten Ausführungsbeispiels näher beschrieben.The invention is based on one in the figure illustrated embodiment described in more detail.

In der Figur 1 ist ein Abgaskrümmer 1 dargestellt mit einer mehrkanaligen Einströmseite 2 und einer einkanaligen Ausströmseite 3. Der Abgaskrümmer 1 umfasst im wesentlichen drei Krümmerbauteile, nämlich einen gebogenen Endabschnitt 4, an den sich zwei T-Abschnitte 5 und 6 angliedern. Um einen Dehnungs- bzw. Längenausgleich dieses Rohrverbunds bei der Abgasführung zu ermöglichen, sind der Endabschnitt 4 und der T-Abschnitt 5 sowie der T-Abschnitt 5 und der T-Abschnitt 6 jeweils über einen Schiebesitz 7 bzw. 8 miteinander verbunden.1 shows an exhaust manifold 1 with a multi-channel inflow side 2 and a single-channel Outflow side 3. The exhaust manifold 1 essentially comprises three manifold components, namely a curved one End section 4, to which two T sections 5 and 6 are attached. For an expansion or length compensation of this Pipe assembly to allow the exhaust gas routing are the end section 4 and the T section 5 and the T section 5 and the T-section 6 each have a sliding seat 7 or 8 connected to each other.

Der gebogene Endabschnitt 4 besitzt einen Flanschanschluss 9 und einen Rohranschluss 10. Auch die T-Abschnitte 5, 6 weisen einen Flanschanschluss 11, 12 und einen Rohranschluss 13, 14 auf. Ferner besitzen die T-Abschnitte 5, 6 jeweils einen Schiebesitzstutzen 15, 16.The bent end section 4 has a flange connection 9 and a pipe connection 10. Also the T-sections 5, 6 have a flange connection 11, 12 and a pipe connection 13, 14. Also have the T sections 5, 6 each have a sliding seat socket 15, 16.

Jeder T-Abschnitt 5, 6 ist aus einem Rohrbogen 17, 18 hergestellt, an dessen Wandung der Schiebesitzstutzen 15 bzw. 16 ausgeformt ist.Each T section 5, 6 is made of a pipe bend 17, 18 made on the wall of the sliding seat socket 15th or 16 is formed.

Hierzu ist am Aussenradius Ra des Rohrbogens 17, 18 im zwischen Flanschanschluss 11, 12 und Rohranschluss 13, 14 liegenden Krümmerbereich 19, 20 mittels hydraulischer Innenhochdruckformung zunächst ein Stutzen ausgebaucht worden. Dieser Stutzen wird anschließend durch einen Sägeschnitt geöffnet.For this purpose, at the outer radius R a of the pipe bend 17, 18 in the elbow region 19, 20 lying between the flange connection 11, 12 and the pipe connection 13, 14, a nozzle was first bulged by means of hydraulic internal high-pressure forming. This nozzle is then opened by a saw cut.

Wie Figur 1 zeigt, ist der Sägeschnitt schräg ausgeführt, so dass die Enden 21, 22 der Schiebesitzstutzens 15, 16 gegenüber der Vertikalebene entsprechend in einem Winkel schräg verläuft. Auch das Ende 23 vom Rohranschluss 10 und das Ende 24 des Rohranschlusses 13 ist abgeschrägt. Auf diese Weise wird eine Beeinträchtigung der Strömungsverhältnisse im Krümmerbereich 19 bzw. 20 vermieden.As FIG. 1 shows, the saw cut is made obliquely, so that the ends 21, 22 of the sliding seat socket 15, 16 accordingly at an angle to the vertical plane runs obliquely. Also the end 23 of the pipe connection 10 and the end 24 of the pipe connection 13 is chamfered. In this way there is an impairment of the flow conditions avoided in the manifold area 19 or 20.

Der Schiebesitz 7 bzw. 8 wird dadurch gebildet, dass der Schiebesitzstutzen 15 des T-Abschnitts 5 den Rohranschluss 10 und der Schiebesitzstutzen 16 des T-Abschnitts 6 den Rohranschluss 13 des T-Abschnitts 5 endseitig übergreift, wobei die Schiebesitzstutzen 15 bzw. 16 und die Rohranschlüsse 10 bzw. 13 jeweils mediendicht aneinanderliegen. Dementsprechend ist der Durchmesser D1 der Schiebesitzstutzen 15, 16 um ein entsprechendes Maß grösser als der Durchmesser D2 der Rohranschlüsse 10 bzw. 13.The sliding seat 7 or 8 is formed in that the sliding seat socket 15 of the T-section 5 overlaps the pipe connection 10 and the sliding seat socket 16 of the T-section 6 overlaps the pipe connection 13 of the T-section 5, the sliding seat socket 15 or 16 and the pipe connections 10 and 13 are each media-tight. Accordingly, the diameter D 1 of the sliding seat socket 15, 16 is larger by a corresponding amount than the diameter D 2 of the pipe connections 10 and 13, respectively.

Das Verhältnis der Länge Ls eines Schiebesitzstutzens 15, 16 gemessen entlang der Mittellinie ML zum Durchmesser D eines Rohrbogens 17, 18, welcher D2 entspricht, beträgt 0,5.The ratio of the length L s of a sliding seat socket 15, 16 measured along the center line ML to the diameter D of a pipe bend 17, 18, which corresponds to D 2 , is 0.5.

Zur Komplettierung eines Abgaskrümmers 1 wird an seiner Einströmseite 2 ein hier nicht dargestellte Kopfflansch festgelegt. Zum Kopfflansch hin sind die Flanschanschlüsse 9 bzw. 11 und 12 im Durchmesser aufgeweitet. An der Ausströmseite 3 schließt sich ebenfalls über einen Schiebesitz ein Auspuffrohr bzw. Zwischenrohr mit einem endseitigen Kopfflansch an. To complete an exhaust manifold 1 is on his Inflow side 2 a head flange, not shown here fixed. The flange connections are towards the top flange 9 or 11 and 12 expanded in diameter. On the outflow side 3 also closes via a Sliding seat an exhaust pipe or intermediate pipe with a end flange.

BezugszeichenaufstellungList of reference symbols

11
- Abgaskrümmer- exhaust manifold
22nd
- Einströmseite- inflow side
33rd
- Ausströmseite- outflow side
44th
- Endabschnitt- end section
55
- T-Abschnitt- T section
66
- T-Abschnitt- T section
77
- Schiebesitz- sliding seat
88th
- Schiebesitz- sliding seat
99
- Flanschanschluss- flange connection
1010th
- Rohranschluss- pipe connection
1111
- Flanschanschluss- flange connection
1212th
- Flanschanschluss- flange connection
1313
- Rohranschluss- pipe connection
1414
- Rohranschluss- pipe connection
1515
- Schiebesitzstutzen- Sliding seat socket
1616
- Schiebesitzstutzen- Sliding seat socket
1717th
- Rohrbogen- elbows
1818th
- Rohrbogen- elbows
1919th
- Krümmerbereich- manifold area
2020th
- Krümmerbereich- manifold area
2121
- Ende v. 15- end of 15
2222
- Ende v. 16- end of 16
2323
- Ende v. 10- end of 10th
2424th
- Ende v. 13- end of 13
DD
- Durchmesser v. 17 bzw. 18- diameter of 17 or 18
D1 D 1
- Durchmesser v. 15 bzw. 16- diameter of 15 or 16
D2 D 2
- Durchmesser v. 10 bzw. 13- diameter of 10 or 13
Ls L s
- Länge v. 15 bzw. 16- length from 15 or 16
MLML
- Mittellinie- center line
Ra R a
- Außenradius v. 17 bzw. 18- outer radius of 17 or 18

Claims (4)

Abgaskrümmer mit einem gebogenen Endabschnitt (4), an den sich jeweils über Schiebesitz (7, 8) mindestens zwei T-Abschnitte (5, 6) angliedern, wobei der Endabschnitt (4) und die T-Abschnitte (5, 6) jeweils einen Flanschanschluss (9, 11, 12) sowie einen Rohranschluss (10, 13, 14) aufweisen und jeder T-Abschnitt (5, 6) einen Schiebesitzstutzen (15, 16) besitzt, dadurch gekennzeichnet, dass der Schiebesitzstutzen (15, 16) durch Innenhochdruckformung am Außenradius (Ra) eines Rohrbogens (17, 18) geformt ist.Exhaust manifold with a curved end section (4), to which at least two T-sections (5, 6) are attached via a sliding seat (7, 8), the end section (4) and the T-sections (5, 6) each having one Have flange connection (9, 11, 12) and a pipe connection (10, 13, 14) and each T-section (5, 6) has a sliding seat socket (15, 16), characterized in that the sliding seat socket (15, 16) has Internal high pressure forming on the outer radius (R a ) of a pipe bend (17, 18) is formed. Abgaskrümmer nach Anspruch 1, dadurch gekennzeichnet, dass der Schiebesitzstutzen (15, 16) und/oder der Rohranschluss (10, 13) endseitig schräg ausgebildet sind.Exhaust manifold according to claim 1, characterized in that the sliding seat socket (15, 16) and / or the pipe connection (10, 13) are formed obliquely at the end. Abgaskrümmer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Verhältnis der Länge des Schiebesitzstutzens zum Durchmesser des Rohrbogens etwa 0,5 ist.Exhaust manifold according to claim 1 or 2, characterized in that the ratio of the length of the sliding seat socket to the diameter of the pipe bend is approximately 0.5. Abgaskrümmer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Schiebesitzstutzen (15) des T-Abschnitts (5) den Rohranschluss (10) des Endabschnitts (4) und der Schiebestutzen (16) des T-Abschnitts (6) den Rohranschluss (13) des T-Abschnitts (5) endseitig übergreift.Exhaust manifold according to one of claims 1 to 3, characterized in that the sliding seat connection (15) of the T-section (5) the pipe connection (10) of the end section (4) and the sliding connection (16) of the T-section (6) the pipe connection (13) of the T section (5) overlaps at the ends.
EP98118632A 1998-01-29 1998-10-01 Exhaust manifold Expired - Lifetime EP0933509B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803275A DE19803275A1 (en) 1998-01-29 1998-01-29 Exhaust manifold
DE19803275 1998-01-29

Publications (3)

Publication Number Publication Date
EP0933509A1 true EP0933509A1 (en) 1999-08-04
EP0933509B1 EP0933509B1 (en) 2001-03-28
EP0933509B2 EP0933509B2 (en) 2005-02-16

Family

ID=7855927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98118632A Expired - Lifetime EP0933509B2 (en) 1998-01-29 1998-10-01 Exhaust manifold

Country Status (7)

Country Link
US (1) US6134886A (en)
EP (1) EP0933509B2 (en)
BR (1) BR9804289A (en)
CZ (1) CZ294172B6 (en)
DE (2) DE19803275A1 (en)
ES (1) ES2159417T5 (en)
PT (1) PT933509E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3411571A4 (en) * 2016-02-05 2019-10-16 Cummins, Inc. Systems and methods for equalizing backpressure in engine cylinders

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19923557B4 (en) * 1999-05-21 2006-07-13 Daimlerchrysler Ag A built air gap insulated exhaust manifold of an exhaust system of a motor vehicle and a method for its production
US6293098B1 (en) * 2000-08-29 2001-09-25 George J. Coates Method and apparatus for joining pressurized exhaust manifold sections
DE10200638C2 (en) 2002-01-10 2003-12-11 Benteler Automobiltechnik Gmbh Arrangement for guiding exhaust gas from an internal combustion engine
DE602004006698T2 (en) * 2003-12-01 2007-10-04 Nissan Motor Co., Ltd., Yokohama Exhaust manifold for an internal combustion engine
KR100794018B1 (en) 2006-10-31 2008-01-10 현대자동차주식회사 Exhaust manifold
JP2013213491A (en) * 2012-03-08 2013-10-17 Calsonic Kansei Corp Double pipe exhaust manifold
US20150315666A1 (en) * 2014-04-30 2015-11-05 Ford Global Technologies, Llc Induction annealing as a method for expanded hydroformed tube formability
US9422857B2 (en) * 2014-12-17 2016-08-23 Caterpillar Inc. Exhaust nozzle tip device and system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228187A1 (en) * 1992-08-25 1994-03-03 Hde Metallwerk Gmbh IC engine exhaust gas high performance header - has header pipes hydrostatically deformed, with transition-free, arcuated course
EP0623739A1 (en) * 1993-05-03 1994-11-09 Volkswagen Aktiengesellschaft Manifold
DE4339290A1 (en) * 1993-11-18 1995-05-24 Daimler Benz Ag Process and tool for producing pipe T-pieces with a curved branch from pipe sections using the hydroforming process
DE19510602C1 (en) * 1995-03-23 1996-04-11 Daimler Benz Ag Exhaust gas system for multicylinder engine
EP0717179A1 (en) * 1994-12-16 1996-06-19 Firma J. Eberspächer Air gap insulation exhaust manifold
US5689954A (en) * 1995-04-13 1997-11-25 Mercedes-Benz A.G. Exhaust gas manifold for an internal combustion engine and method of making such exhaust gas manifold

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4179884A (en) * 1977-08-08 1979-12-25 Caterpillar Tractor Co. Watercooled exhaust manifold and method of making same
US4644747A (en) * 1986-02-10 1987-02-24 General Motors Corporation Low-stress shielded exhaust passage assemblies
JPS63162918A (en) * 1986-12-25 1988-07-06 Kazuhito Fukazawa Manifold and manufacture thereof
US5159811A (en) * 1990-07-16 1992-11-03 Caterpillar Inc. Flexible coupling device for use in an engine manifold system
DE19511514C1 (en) * 1995-03-29 1996-08-01 Daimler Benz Ag Exhaust manifold for IC engine
DE19606003A1 (en) * 1996-02-17 1997-06-12 Daimler Benz Ag Pipe connector with sliding seat

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228187A1 (en) * 1992-08-25 1994-03-03 Hde Metallwerk Gmbh IC engine exhaust gas high performance header - has header pipes hydrostatically deformed, with transition-free, arcuated course
EP0623739A1 (en) * 1993-05-03 1994-11-09 Volkswagen Aktiengesellschaft Manifold
DE4339290A1 (en) * 1993-11-18 1995-05-24 Daimler Benz Ag Process and tool for producing pipe T-pieces with a curved branch from pipe sections using the hydroforming process
EP0717179A1 (en) * 1994-12-16 1996-06-19 Firma J. Eberspächer Air gap insulation exhaust manifold
DE19510602C1 (en) * 1995-03-23 1996-04-11 Daimler Benz Ag Exhaust gas system for multicylinder engine
EP0733789A2 (en) * 1995-03-23 1996-09-25 Mercedes-Benz Ag Fan-shaped exhaust manifold for multi-cylinder internal combustion engines
US5689954A (en) * 1995-04-13 1997-11-25 Mercedes-Benz A.G. Exhaust gas manifold for an internal combustion engine and method of making such exhaust gas manifold

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3411571A4 (en) * 2016-02-05 2019-10-16 Cummins, Inc. Systems and methods for equalizing backpressure in engine cylinders
US10704449B2 (en) 2016-02-05 2020-07-07 Cummins Inc. Systems and methods for equalizing backpressure in engine cylinders
EP3957837A1 (en) * 2016-02-05 2022-02-23 Cummins, Inc. Systems and methods for equalizing backpressure in engine cylinders
US11319860B2 (en) 2016-02-05 2022-05-03 Cummins Inc. Systems and methods for equalizing backpressure in engine cylinders
US11686239B2 (en) 2016-02-05 2023-06-27 Cummins Inc. Systems and methods for equalizing backpressure in engine cylinders

Also Published As

Publication number Publication date
DE19803275A1 (en) 1999-08-12
BR9804289A (en) 1999-12-21
US6134886A (en) 2000-10-24
EP0933509B2 (en) 2005-02-16
CZ294172B6 (en) 2004-10-13
PT933509E (en) 2001-07-31
CZ322398A3 (en) 1999-08-11
DE59800573D1 (en) 2001-05-03
ES2159417T5 (en) 2005-09-01
EP0933509B1 (en) 2001-03-28
ES2159417T3 (en) 2001-10-01

Similar Documents

Publication Publication Date Title
EP0261544B1 (en) Nuclear reactor fuel element
DE10358373A1 (en) High pressure fuel injection pipe with connection head
EP0933509B1 (en) Exhaust manifold
DE2116982A1 (en) Pipeline distribution system for supply and return lines, in particular for hot water heating systems
DE1452799A1 (en) Method for connecting sandwich panels
DE102006009602A1 (en) Carrying arrangement for container, e.g. fuel tank, on carrying component of truck has bracket as one-piece component that can be directly mounted on carrying component or adapter element via reversible connection arrangement
DE69630866T2 (en) END SECTIONS FOR "CLIMAVER PLUS" TYPE CONNECTIONS FOR GLASS WOOL PIPING
DE3046056A1 (en) THROUGH PIPE STRETCHED COMPONENTS OF VEHICLE BODIES
DE3129351C2 (en) Flange for pipe elbows on combustion engines
DE19705331A1 (en) Rapid connection with single body with side protuberance
EP3070205B1 (en) Foundation pile for a wind turbine
EP0715064B1 (en) Exhaust system
AT408276B (en) PANEL OR FLAT RADIATORS
EP3199794A1 (en) Fuel distribution rail and method for producing the same
CH671619A5 (en)
DE1602262C3 (en) Method for the production of a pipe branch without welding seams
WO2006111197A1 (en) Double-stranded waste gas system
DE4310187C2 (en) Pipe clamp
DE3122520C2 (en)
DE2115298A1 (en) Valve arrangement between two stationary pipe connections
DE102009021358A1 (en) Front wall part for motor vehicle, has feedthrough opening for steering linkage, and collar formed adjacent to feedthrough opening, on which sealing element of steering linkage is fastened
EP0733788B1 (en) Manifold for an internal combustion engine
DE2748512A1 (en) BRANCH FITTING FOR PIPES, ESPECIALLY FOR IRRIGATION PLANTS
DE3604921A1 (en) METHOD FOR THE FOLDED OR BALANCED CONNECTION OF A PIPE TO A TERMINAL AND DEVICE, IN PARTICULAR FOR CARRYING OUT THIS METHOD
DE2911274C3 (en) Double tube crossing

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990507

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid

Free format text: DE ES FR GB IT PT SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 20000808

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT PT SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20010328

REF Corresponds to:

Ref document number: 59800573

Country of ref document: DE

Date of ref document: 20010503

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20010329

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2159417

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: FRIEDRICH BOYSEN GMBH & CO. KG

Effective date: 20011221

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20050216

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): DE ES FR GB IT PT SE

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)

Effective date: 20050323

REG Reference to a national code

Ref country code: SE

Ref legal event code: RPEO

REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Date of ref document: 20050513

Kind code of ref document: T5

ET3 Fr: translation filed ** decision concerning opposition
REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20171024

Year of fee payment: 20

Ref country code: DE

Payment date: 20171026

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20171023

Year of fee payment: 20

Ref country code: ES

Payment date: 20171121

Year of fee payment: 20

Ref country code: PT

Payment date: 20171002

Year of fee payment: 20

Ref country code: GB

Payment date: 20171019

Year of fee payment: 20

Ref country code: SE

Payment date: 20171019

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59800573

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20180930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20180930

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20181010

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20200724

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20181002