EP0514645A1 - 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
EP0514645A1
EP0514645A1 EP92105424A EP92105424A EP0514645A1 EP 0514645 A1 EP0514645 A1 EP 0514645A1 EP 92105424 A EP92105424 A EP 92105424A EP 92105424 A EP92105424 A EP 92105424A EP 0514645 A1 EP0514645 A1 EP 0514645A1
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EP
European Patent Office
Prior art keywords
exhaust
exhaust system
cylinders
rows
flow
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EP92105424A
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German (de)
French (fr)
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EP0514645B1 (en
Inventor
Erwin Rutschmann
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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    • 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 characterizing features of claim 1 serve. If the exhaust gases of the two rows of cylinders flow through a front 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, which 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 such 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 lying parallel to the rows of cylinders. They enter the main silencers from the rear, turn 180 ° on the front and enter the tailpipes 16 leading to the outside again at the rear. 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 casing 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.

Abstract

Die Abgase beider Zylinderreihen (1,3) eines Mehrzylinder-Hubkolbenmotors durchströmen zunächst einen längs der Zylinderreihe (1,3) liegenden Katalysator (5,6) und danach im Kreuz-Gegenstrom einen quer zu den Zylinderreihen angeordneten, horizontal liegenden Vorschalldämpfer (7). <IMAGE>The exhaust gases from both cylinder rows (1,3) of a multi-cylinder reciprocating piston engine first flow through a catalytic converter (5,6) lying along the cylinder row (1,3) and then in cross-counterflow through a horizontal front silencer (7) arranged transversely to the cylinder rows. . <IMAGE>

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 so 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.To solve this problem, the characterizing features of claim 1 serve. If the exhaust gases of the two rows of cylinders flow through a front 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, which 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 row of cylinders 1 of an 8-cylinder V-engine with the cylinders Z1, Z2, Z3, Z4, four exhaust pipes originate, which unite in a manifold 2. The four exhaust pipes of the right cylinder bank 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 cylinder banks 1 and 3 .

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 absorption, 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 such 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 lying parallel to the rows of cylinders. They enter the main silencers from the rear, turn 180 ° on the front and enter the tailpipes 16 leading to the outside again at the rear. 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 casing 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 (10)

Abgasanlage für einen Mehrzylinder-Hubkolbenmotor, mit zwei Zylinderreihen, insbesondere für einen V-Motor, mit einem quer zu den Zylinderreihen, horizontal liegenden Vorschalldämpfer, dadurch gekennzeichnet, daß die Abgase beider Zylinderreihen (1 bzw. 3) zunächst einen ihnen benachbarten und zu ihnen parallel liegenden Katalysator (5 bzw. 6) und dann im Gegenstrom den Vorschalldämpfer (7) durchströmen.Exhaust system for a multi-cylinder reciprocating piston engine, with two rows of cylinders, in particular for a V-engine, with a front silencer lying horizontally across the rows of cylinders, characterized in that the exhaust gases of both rows of cylinders (1 or 3) are initially adjacent to and adjacent to them parallel catalyst (5 or 6) and then flow through the front silencer (7) in counterflow. Abgasanlage nach Anspruch 1, dadurch gekennzeichnet, daß die aus dem Vorschalldämpfer (7) austretenden Abgase der einen Zylinderreihe (1 bzw. 3) einen benachbart der anderen Zylinderreihe (3 bzw. 1) zu ihr parallel liegenden Hauptschalldämpfer 14 bzw. 15) durchströmen.Exhaust system according to Claim 1, characterized in that the exhaust gases emerging from the front silencer (7) of one row of cylinders (1 or 3) flow through a main silencer 14 or 15 lying parallel to the other row of cylinders (3 or 1). Abgasanlage nach Anspruch 2, dadurch gekennzeichnet, daß die Abgase in die Hauptschalldämpfer (14, 15) von hinten eintreten, an ihrer Vorderseite um 180° umgelenkt werden und hinten wieder in die ins Freie führenden Endrohre (16, 17) ausströmen.Exhaust system according to claim 2, characterized in that the exhaust gases enter the main silencers (14, 15) from behind, are deflected by 180 ° on their front side and flow out again into the tailpipes (16, 17) leading to the outside. Abgasanlage nach Anspruch 3, dadurch gekennzeichnet, daß die Hauptschalldämpfer (14, 15) unterhalb der Zylinderreihen (1, 2), symmetrisch zum mittigen Vorschalldämpfer (7) und zur Mittenlängsachse (18) des Motors angeordnet sind.Exhaust system according to claim 3, characterized in that the main silencers (14, 15) are arranged below the cylinder rows (1, 2), symmetrically to the central front silencer (7) and to the central longitudinal axis (18) of the engine. Abgasanlage nach Anspruch 1, dadurch gekennzeichnet, daß den Vorschalldämpfer (7) ein endseitig verschlossenes Mantelrohr (13) umgibt, in dem zwei parallele, im Kreuz-Gegenstrom durchströmte Abgasrohre (10, 11) angeordnet sind.Exhaust system according to claim 1, characterized in that the front silencer (7) is surrounded by a jacket pipe (13) which is closed at the end and in which two parallel exhaust pipes (10, 11) through which a cross-counterflow flows are arranged. Abgasanlage nach Anspruch 5, dadurch gekennzeichnet, daß die an der einen Stirnfläche (8 bzw. 9) in das Mantelrohr (13) eintreten, im Mittenbereich (12) abgekröpt sind und parallel versetzt zur anderen Stirnfläche (9 bzw. 8) hin weitergeführt sind.Exhaust system according to Claim 5, characterized in that those which enter the jacket tube (13) on one end face (8 or 9), are cropped in the central region (12) and continue parallel to the other end face (9 or 8) . Abgasanlage nach Anspruch 6, dadurch gekennzeichnet, daß die Abgasrohre (10, 11) im Mittenbereich unterbrochen sind und zwei im Abstand zueinander stehende Teilstücke (10', 10'') bzw. (11', 11'') bilden.Exhaust system according to claim 6, characterized in that the exhaust pipes (10, 11) are interrupted in the central region and form two sections (10 ', 10' ') or (11', 11 '') spaced apart from one another. Abgasanlage nach Anspruch 7, dadurch gekennzeichnet, daß sich der Abgasstrom zwischen den Teilstücken (10', 10'') des einen Abgasrohres (10) mit dem Abgasstrom des anderen Abgasrohres (11) im Kreuzstrom vermischt.Exhaust system according to Claim 7, characterized in that the exhaust gas flow between the sections (10 ', 10' ') of one exhaust pipe (10) mixes with the exhaust gas flow of the other exhaust pipe (11) in cross flow. Abgasanlage nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das Verhältnis Gesamthubvolumen (VKat) der Katalysatoren zum Gesamthubvolumen (VH) aller Zylinder etwa 1/10 des Verhältnisses Gesamtdämpfervolumen (VD) zu Gesamthubvolumen (VH) beträgt.Exhaust system according to Claims 1 and 2, characterized in that the ratio of total stroke volume (V Kat ) of the catalysts to the total stroke volume (V H ) of all cylinders is approximately 1/10 of the ratio of total damper volume (V D ) to total stroke volume (V H ). Abgasanlage nach Anspruch 9, dadurch gekennzeichnet, daß das Verhältnis
Figure imgb0001
 das Verhältnis
Figure imgb0002
 beträgt.Exhaust system according to claim 9, characterized in that the ratio
Figure imgb0001
 The relationship
Figure imgb0002
 is.
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 true EP0514645A1 (en) 1992-11-25
EP0514645B1 EP0514645B1 (en) 1994-11-02

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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)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06167213A (en) * 1992-08-10 1994-06-14 Ford Motor Co Catalytic converter for engine exhaust gas device
JPH0630417U (en) * 1992-09-21 1994-04-22 カルソニック株式会社 Manifold catalytic converter
US5950423A (en) * 1997-06-27 1999-09-14 Corning Incorporated In-line exhaust system for a transverse mounted v-engine
US5966929A (en) * 1997-06-27 1999-10-19 Corning Incorporated In-line exhaust system for a transverse mounted v-engine
JP3378474B2 (en) * 1997-08-06 2003-02-17 トヨタ自動車株式会社 Exhaust manifold of internal combustion engine
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Also Published As

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US5265420A (en) 1993-11-30
DE4116493A1 (en) 1992-11-26
ES2063542T3 (en) 1995-01-01
DE59200717D1 (en) 1994-12-08
EP0514645B1 (en) 1994-11-02
JPH05195762A (en) 1993-08-03

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