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EP0514645B1 - Exhaust pipe arrangement for a multicylinder piston engine - Google Patents

Exhaust pipe arrangement for a multicylinder piston engine Download PDF

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Publication number
EP0514645B1
EP0514645B1 EP92105424A EP92105424A EP0514645B1 EP 0514645 B1 EP0514645 B1 EP 0514645B1 EP 92105424 A EP92105424 A EP 92105424A EP 92105424 A EP92105424 A EP 92105424A EP 0514645 B1 EP0514645 B1 EP 0514645B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
cylinders
arrangement according
silencer
rows
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
Application number
EP92105424A
Other languages
German (de)
French (fr)
Other versions
EP0514645A1 (en
Inventor
Erwin Rutschmann
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0514645A1 publication Critical patent/EP0514645A1/en
Application granted granted Critical
Publication of EP0514645B1 publication Critical patent/EP0514645B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01N13/02—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 having two or more separate silencers in series
    • 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
    • F01N13/04—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 having two or more silencers in parallel, e.g. having interconnections for multi-cylinder engines
    • 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
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • 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
    • F01N13/107—More than one exhaust manifold or exhaust collector
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1832—Number of cylinders eight

Definitions

  • the invention relates to an exhaust system of a multi-cylinder reciprocating piston engine with two rows of cylinders according to the preamble of claim 1.
  • the characteristic features of claim 1 serve to solve this problem. If the exhaust gases of the two rows of cylinders flow through a transverse silencer lying transversely to them in countercurrent, a short overall length of the exhaust system and the engine can be achieved by appropriate arrangement behind the engine. A spatially compact construction is further favored by the fact that the catalytic converters and main silencers lie alongside the rows of cylinders. Such an exhaust system is ideally suited for a V engine that is arranged in the rear of the vehicle. But it also has spatial advantages for a mid-engine.
  • the silencer in coordination with the total stroke volume of the cylinders, an exhaust system with low pressure loss and good damping can be created despite multiple deflection of the exhaust gas flows.
  • both exhaust pipes in the central region 12 are separated into two sections 10 ', 10' 'and 11', 11 ''.
  • the sections are bent at the ends and provided with nozzle-shaped end pieces and arranged with respect to one another so that the exhaust gases run against one another in cross-counterflow.
  • the exhaust gases After exiting the front silencer 7, the exhaust gases enter the main silencers 14, 15 which are parallel to the rows of cylinders. 17 out.
  • the entire exhaust system is constructed symmetrically to the central longitudinal axis 18 of the engine.
  • the right and left catalytic converters and main silencers are each of the same size and are equidistant from the central longitudinal axis 18.
  • the exhaust gases from one row of cylinders flow through the main silencer adjacent to the other row of cylinders.
  • the volumes of the jacket pipes surrounding the silencers and catalytic converters are quite large.
  • the ratio of the total catalyst volume V Kat to the total stroke volume of the cylinders V H is 1.4; the ratio of the total damping volume V D to the total stroke volume V H is 14.
  • the large-volume main silencers are below the two rows of cylinders arranged so that the installation length of the motor does not have to be increased because of them.
  • the engine with the exhaust system is mounted centrally on an engine mount 19 of the motor vehicle.
  • the motor mount 19 is integrated in the axle structure (subframe) of the motor vehicle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)

Description

Die Erfindung betrifft eine Abgasanlage eines Mehrzylinder-Hubkolbenmotors mit zwei Zylinderreihen nach dem Oberbegriff des Anspruchs 1.The invention relates to an exhaust system of a multi-cylinder reciprocating piston engine with two rows of cylinders according to the preamble of claim 1.

Eine derartige Abgasanlage ist aus US-PS 30 70 187 bekannt. Die Abgase der in Fahrtrichtung liegenden beiden Zylinderreihen werden in zwei quer zum Fahrzeug liegende Schalldämpfer eingeleitet. In beiden Schalldämpfern liegen gelochte Abschnitte von Abgasrohren, aus denen die Abgase an der Hinterseite des Kraftfahrzeugs ins Freie austreten.Such an exhaust system is known from US-PS 30 70 187. The exhaust gases from the two rows of cylinders lying in the direction of travel are introduced into two silencers located transversely to the vehicle. In both silencers there are perforated sections of exhaust pipes from which the exhaust gases on the rear of the motor vehicle emerge outdoors.

Es ist die Aufgabe der Erfindung, eine solche Abgasanlage so umzugestalten, daß die benötigten Schalldämpfer und Katalysatoren auf engstem Raum untergebracht werden können.It is the object of the invention to redesign such an exhaust system in such a way that the required silencers and catalytic converters can be accommodated in a very small space.

Zur Lösung dieser Aufgabe dienen die kennzeichnenden Merkmale des Anspruchs 1. Wenn die Abgase der beiden Zylinderreihen einen quer zu ihnen liegenden Vorschalldämpfer im Gegenstrom durchströmen, läßt sich durch zweckmäßige Anordnung hinter dem Motor eine kurze Gesamtbaulänge der Abgasanlage und des Motors erreichen. Begünstigt wird eine räumlich kompakte Bauweise noch dadurch, daß die Katalysatoren und Hauptschalldämpfer längsseits der Zylinderreihen liegen. Optimal eignet sich eine solche Abgasanlage für einen V-Motor, der im Fahrzeugheck angeordnet ist. Sie bringt aber auch für einen Mittelmotor räumliche Vorteile.The characteristic features of claim 1 serve to solve this problem. If the exhaust gases of the two rows of cylinders flow through a transverse silencer lying transversely to them in countercurrent, a short overall length of the exhaust system and the engine can be achieved by appropriate arrangement behind the engine. A spatially compact construction is further favored by the fact that the catalytic converters and main silencers lie alongside the rows of cylinders. Such an exhaust system is ideally suited for a V engine that is arranged in the rear of the vehicle. But it also has spatial advantages for a mid-engine.

Durch eine geeignete Bemessung der Gesamtvolumina der Katalysatoren, der Schalldämpfer in Abstimmung auf das Gesamthubvolumen der Zylinder kann trotz mehrfacher Umlenkung der Abgasströme eine Abgasanlage mit geringem Druckverlust und guter Dämpfung geschaffen werden.By suitably dimensioning the total volume of the catalytic converters, the silencer in coordination with the total stroke volume of the cylinders, an exhaust system with low pressure loss and good damping can be created despite multiple deflection of the exhaust gas flows.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend erläutert.An embodiment of the invention is shown in the drawing and is explained below.

Es zeigen:

Fig. 1
Draufsicht auf eine Abgasanlage an einem V8-Motor,
Fig. 2
Ansicht der Abgasanlage von hinten,
Fig. 3
Vorschalldämpfer.
Show it:
Fig. 1
Top view of an exhaust system on a V8 engine,
Fig. 2
View of the exhaust system from behind,
Fig. 3
Front silencer.

Von einer linken Zylinderreihe 1 eines 8-Zylinder-V-Motors mit den Zylindern Z1, Z2, Z3, Z4 gehen vier Abgasleitungen aus, die sich in einem Sammelrohr 2 vereinigen. Die vier Abgasleitungen der rechten Zylinderreihe 3 mit den Zylindern Z5, Z6, Z7, Z8 vereinigen sich in dem Sammelrohr 4. In beide Sammelrohre 2 und 4 sind Katalysatoren 5, bzw. 6 eingesetzt, deren Längsachsen parallel zu den Zylinderreihen 1 bzw. 3 liegen.From a left cylinder row 1 of an 8-cylinder V-engine with cylinders Z1, Z2, Z3, Z4, four exhaust pipes come out, which unite in a manifold 2. The four exhaust pipes of the right row of cylinders 3 with the cylinders Z5, Z6, Z7, Z8 unite in the manifold 4. In both manifolds 2 and 4, catalysts 5 and 6 are used, the longitudinal axes of which are parallel to the rows of cylinders 1 and 3, respectively .

Das in den Katalysatoren 5, 6 gereinigte Abgas gelangt sodann in einen querliegenden Vorschalldämpfer 7 und durchströmt ihn in zwei gegenläufigen Abgasströmen. Es tritt an den beiden Stirnflächen 8 und 9 in eine Mantelrohr 13 ein, das die beiden Abgasrohre 10, 11 umschließt. Um eine intensive Durchmischung der Abgasströmung und eine gute Schalldämpfung zu erreichen, sind beide Abgasrohre im Mittenbereich 12 in zwei Teilstücke 10', 10'' bzw. 11', 11'' aufgetrennt. Die Teilstücke sind endseitig abgekröpft und mit düsenförmigen Endstücken versehen und so zueinander angeordnet, daß die Abgase im Kreuz-Gegenstrom gegeneinander laufen.The exhaust gas cleaned in the catalysts 5, 6 then passes into a transverse front silencer 7 and flows through it in two opposing exhaust gas flows. It enters at the two end faces 8 and 9 into a casing tube 13 which surrounds the two exhaust pipes 10, 11. In order to achieve intensive mixing of the exhaust gas flow and good sound damping, both exhaust pipes in the central region 12 are separated into two sections 10 ', 10' 'and 11', 11 ''. The sections are bent at the ends and provided with nozzle-shaped end pieces and arranged with respect to one another so that the exhaust gases run against one another in cross-counterflow.

Nach Austritt aus dem Vorschalldämpfer 7 gelangen die Abgase in die parallel zu den Zylinderreihen liegenden Hauptschalldämpfer 14, 15. Sie treten von hinten in die Hauptschalldämpfer ein, kehren an der Vorderseite um 180° um und treten hinten wieder in die ins Freie führenden Endrohre 16, 17 aus. Die gesamte Abgasanlage ist symmetrisch zur Mittenlängsachse 18 des Motors aufgebaut. Die rechten und linken Katalysatoren und Hauptschalldämpfer sind jeweils gleich groß bemessen und liegen äquidistant zur Mittenlängsachse 18. Die Abgase der einen Zylinderreihe durchströmen den der anderen Zylinderreihe benachbarten Hauptschalldämpfer. Um den Strömungswiderstand trotz der mehrfachen scharften Umlenkungen gering zu halten, sind die Volumina der die Schalldämpfer und Katalysatoren umgebenden Mantelrohre recht groß bemessen. Das Verhältnis des Gesamtkatalysatorvolumens VKat zum Gesamthubvolumen der Zylinder VH beträgt 1,4; das Verhältnis des Gesamtdämpfungsvolumens VD zum Gesamthubvolumen VH beträgt 14. Die großvolumigen Hauptschalldämpfer sind unterhalb der beiden Zylinderreihen angeordnet, so daß ihretwegen die Einbaulänge des Motors nicht vergrößert werden muß.After exiting the front silencer 7, the exhaust gases enter the main silencers 14, 15 which are parallel to the rows of cylinders. 17 out. The entire exhaust system is constructed symmetrically to the central longitudinal axis 18 of the engine. The right and left catalytic converters and main silencers are each of the same size and are equidistant from the central longitudinal axis 18. The exhaust gases from one row of cylinders flow through the main silencer adjacent to the other row of cylinders. In order to keep the flow resistance low despite the multiple sharp deflections, the volumes of the jacket pipes surrounding the silencers and catalytic converters are quite large. The ratio of the total catalyst volume V Kat to the total stroke volume of the cylinders V H is 1.4; the ratio of the total damping volume V D to the total stroke volume V H is 14. The large-volume main silencers are below the two rows of cylinders arranged so that the installation length of the motor does not have to be increased because of them.

Der Motor mit Abgasanlage ist mittig auf einem Motorträger 19 des Kraftfahrzeugs gelagert. Der Motorträger 19 ist in die Achsstruktur (Fahrschemel) des Kraftfahrzeugs integriert.The engine with the exhaust system is mounted centrally on an engine mount 19 of the motor vehicle. The motor mount 19 is integrated in the axle structure (subframe) of the motor vehicle.

Claims (9)

  1. An exhaust arrangement for a multiple-cylinder reciprocating piston engine with two rows of cylinders, in particular for a V-type engine with a front silencer arranged horizontally transversely to the rows of cylinders, characterized in that the exhaust gases of the two rows of cylinders (1 and 3 respectively) pass first through a catalyst (5 and 6 respectively) arranged adjacent and parallel thereto and then through the front silencer (7) in counterflow, wherein the exhaust gases of one row of cylinders (1 or 3 respectively) emerging from the front silencer (7) pass through a main silencer (14 and 15 respectively) arranged adjacent to the other rob of cylinders (3 or 1 respectively) and parallel thereto.
  2. An exhaust arrangement according to Claim 1, characterized in that the exhaust gases enter the main silencers (14, 15) from the rear, are reversed through 180° at the front end thereof and flow out again at the rear into the end pipes (16, 17) leading to the open air.
  3. An exhaust arrangement according to Claim 2 characterized in that the main silencers (14, 15) are arranged below the rows of cylinders (1, 2), symmetrically to the central front silencer (7) and to the median longitudinal axis (18) of the engine.
  4. An exhaust arrangement according to Claim 1, characterized in that the front silencer (7) is surrounded by a tubular casing (13) which is closed at the ends and in which two parallel exhaust pipes (10, 11) traversed in the cross-counterflow are arranged.
  5. An exhaust arrangement according to Claim 4, characterized in that the [exhaust pipes] on one end face (8 or 9 respectively) enter the tubular casing (13), are bent in the middle region (12) thereof and continue parallel and offset with respect to the other end face (9 or 8 respectively).
  6. An exhaust arrangement according to Claim 5, characterized in that the exhaust pipes (10, 11) are interrupted in the middle region and form two partial portions (10', 10'') and (11', 11'') respectively arranged at a distance from each other.
  7. An exhaust arrangement according to Claim 6, characterized in that the exhaust-gas flow between the partial portions (10, 10'') of one exhaust pipe (10) mixes in cross-flow with the exhaust-gas flow of the other exhaust pipe (11).
  8. Am exhaust arrangement according to Claim 1, characterized in that the ratio of the overall stroke volume (VCat) of the catalysts to the overall stroke volume (VH) of all the cylinders is about 1/10 of the ratio of the overall silencer volume (VD) to the overall stroke volume (VH).
  9. Am exhaust arrangement according to Claim 8, characterized in that the ratio
    Figure imgb0003
     is ≈ 1·4; and the ratio
    Figure imgb0004
     is ≈ 14.
EP92105424A 1991-05-21 1992-03-30 Exhaust pipe arrangement for a multicylinder piston engine Expired - Lifetime EP0514645B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4116493A DE4116493A1 (en) 1991-05-21 1991-05-21 EXHAUST SYSTEM OF A MULTI-CYLINDER PISTON ENGINE
DE4116493 1991-05-21

Publications (2)

Publication Number Publication Date
EP0514645A1 EP0514645A1 (en) 1992-11-25
EP0514645B1 true EP0514645B1 (en) 1994-11-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105424A Expired - Lifetime EP0514645B1 (en) 1991-05-21 1992-03-30 Exhaust pipe arrangement for a multicylinder piston engine

Country Status (5)

Country Link
US (1) US5265420A (en)
EP (1) EP0514645B1 (en)
JP (1) JPH05195762A (en)
DE (2) DE4116493A1 (en)
ES (1) ES2063542T3 (en)

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US5265420A (en) 1993-11-30
JPH05195762A (en) 1993-08-03
DE4116493A1 (en) 1992-11-26
DE59200717D1 (en) 1994-12-08
EP0514645A1 (en) 1992-11-25
ES2063542T3 (en) 1995-01-01

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