FR2627543A1 - Exhaust system - has engine-mounted curved exhaust pipe which rotate in coupling attached to fixed silencer - Google Patents

Exhaust system - has engine-mounted curved exhaust pipe which rotate in coupling attached to fixed silencer Download PDF

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Publication number
FR2627543A1
FR2627543A1 FR8802334A FR8802334A FR2627543A1 FR 2627543 A1 FR2627543 A1 FR 2627543A1 FR 8802334 A FR8802334 A FR 8802334A FR 8802334 A FR8802334 A FR 8802334A FR 2627543 A1 FR2627543 A1 FR 2627543A1
Authority
FR
France
Prior art keywords
exhaust
engine
exhaust pipe
elbow
fixed
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.)
Withdrawn
Application number
FR8802334A
Other languages
French (fr)
Inventor
Franco Conti
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.)
ACSUD
Original Assignee
ACSUD
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 ACSUD filed Critical ACSUD
Priority to FR8802334A priority Critical patent/FR2627543A1/en
Publication of FR2627543A1 publication Critical patent/FR2627543A1/en
Withdrawn legal-status Critical Current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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
    • F16L27/125—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement having longitudinal and rotary movement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Silencers (AREA)

Abstract

The exhaust system e.g. for a motorisee bicycle or moped has a curved exhaust pipe (1) with a male end (7) fitting inside the female socket (8)of the exhaust silences (4). The silences is fixed to the vehicle chassis by a bracket (9). The two sections of the exhaust system are held together by two springs (3) which hook over brackets (6, 7) welded to the outside of the exhaust pipe and the silencer. The exhaust pipe is inserted into the engine exhaust port (5) e.g. a two stroke or fourstroke engine and moves with the engine. The coupling allows the curved exhaust pipe to rotate inside the fixed silencer. ADVANTAGE - The exhaust piep coupling allows free movement of the engine and vehicle mounted sections on engine installations where the engine moves under load.

Description

DESCRIPTION
COUDE DE POT D'ECHAPPEMENT ARTICULE
POUR VELOMOTEURS - CYCLOMOTEURS ET
MOTOCYCLETTES A MOTEUR FLOTTANT
La présente invention concerne un dispositif permettant l'articulation et la rotation du coude d'échappement fixé sur le cylindre du moteur à explosion, à l'intérieur du pot d'échappement, lui-même fixé sur la partie cycle du vélomoteur, du cyclomoteur ou de la motocyclette.DESCRIPTION
ARTICULATED EXHAUST PIPE ELBOW
FOR MOPEDS - MOPEDS AND
MOTORCYCLES WITH FLOATING MOTOR
The present invention relates to a device allowing the articulation and the rotation of the exhaust elbow fixed on the cylinder of the internal combustion engine, inside the exhaust pipe, itself fixed on the cycle part of the moped, of the moped. or motorcycle.

Traditionnellement, c'est l'ensemble du moteur du coude d'échappement et du pot d'échappement qui est articulé par rapport à la partie cycle du véhicule. Traditionally, it is the whole engine of the exhaust elbow and the exhaust pipe which is articulated with respect to the cycle part of the vehicle.

Le dispositif selon l'invention permet de remédier à cet inconvénient. The device according to the invention overcomes this drawback.

Il comporte en effet une articulation par rotation entre le coude du pot d'échappement et le pot d'échappement lui-même.It in fact comprises an articulation by rotation between the elbow of the exhaust pipe and the exhaust pipe itself.

Cette articulation par rotation permet au moteur flottant sur son axe, ainsi qu'au coude du pot d'échappement dont il est solidaire, de se déplacer progressivement en fonction du régime de fonctionnement du moteur sans entraî- ner un déplacement identique du pot d'échappement lui-même fixé sur la partie cycle du véhicule. This articulation by rotation allows the engine floating on its axis, as well as the elbow of the exhaust pipe of which it is integral, to move gradually according to the operating speed of the engine without causing an identical displacement of the exhaust itself fixed on the cycle part of the vehicle.

Selon une forme- de réalisation préférentielle, la jonction du coude d'échappement et du pot d'échappement est assurée par un emboîtement du coude dans le pot d'échappement. Cet emboîtement est maintenu en permanence par deux ressorts métalliques reliant le coude d'échappement et le pot d'échappement luimême. According to a preferred embodiment, the junction of the exhaust elbow and the exhaust pipe is ensured by fitting the elbow into the exhaust pipe. This interlocking is permanently maintained by two metal springs connecting the exhaust elbow and the exhaust itself.

La partie maIe du coude d'échappement ayant un diamètre externe légèrement inférieur à la partie intérieure femelle du pot d'échappement afin de permettre l'emboîtement et la rotation des pièces emboîtées l'une dans l'autre. The maIe part of the exhaust elbow having an external diameter slightly smaller than the female internal part of the exhaust pipe in order to allow the interlocking and rotation of the parts fitted one inside the other.

Les dessins annexés illustrent l'invention. The accompanying drawings illustrate the invention.

La figure 1 présente en coupe le dispositif selon l'invention. Figure 1 shows in section the device according to the invention.

Le coude d'échappement (1) pénètre dans le cylindre du moteur à explosion par l'orifice prévu à cet effet (5). La rigidité de la fixation est assurée par un support de maintien fixé sur le moteur (9). The exhaust elbow (1) enters the cylinder of the internal combustion engine through the hole provided for this purpose (5). The rigidity of the fixing is ensured by a retaining support fixed on the motor (9).

Le coude d'échappement (1) est emboîté par sa partie femelle (7) dans l'o- rifice mâle (8) du pot d'échappement (4). L'emboîtement est en permanence maintenu par deux ressorts (3) qui viennent s'agrafer sur quatre crochets métalliques soudés, d'une part sur le coude d'échappement pour deux d'entre eux, et d'autre part, sur deux autres crochets soudés sur le pot d'échappement. The exhaust elbow (1) is fitted by its female part (7) into the male orifice (8) of the exhaust pipe (4). The nesting is permanently maintained by two springs (3) which are stapled on four welded metal hooks, on the one hand on the exhaust elbow for two of them, and on the other hand, on two others welded hooks on the exhaust.

L'emboîtement des pièces, lié à la naturelle souplesse conférée par les ressort permet une articulation et une rotation des pièces ainsi emboîtées. The interlocking of the parts, linked to the natural flexibility imparted by the springs allows articulation and rotation of the parts thus nested.

La partie femelle du coude d'échappement pouvant au fur-et-à-mesure de son déplacement, puisqu'elle est solidaire du moteur, tourner par rotation dans la partie mâle du pot d'échappement. The female part of the exhaust elbow can, as it moves, since it is integral with the engine, rotate by rotation in the male part of the exhaust pipe.

La lubrification des pièces en mouvement est assurée par les gaz d'échappement du moteur (moteur à cycle à deux temps ou par des roulements à aiguilles, moteur à cycle à quatre temps ou dièsel). The lubrication of moving parts is ensured by the exhaust gases from the engine (two-stroke cycle engine or by needle bearings, four-stroke cycle engine or diesel).

La figure 2 représente vu de face le dispositif selon l'invention. 2 shows a front view of the device according to the invention.

Le dispositif selon l'invention est particulièrement destiné au système d'échappement de tout moteur à explosion flottant, c'est-à-dire devant se déplacer sur un axe au fur-et-à-mesure de la vitesse de rotation interne alors que le pot d'échappement lui-même, pour des raisons de sécurité, de rendement ou de bruit, doit demeurer en permanence dans une position fixe par rapport au châssis ou à la partie cycle du véhicule.  The device according to the invention is particularly intended for the exhaust system of any floating internal combustion engine, that is to say having to move on an axis as the internal rotation speed progresses while the exhaust itself, for reasons of safety, efficiency or noise, must remain permanently in a fixed position relative to the chassis or the cycle part of the vehicle.

Claims (6)

REVENDICATIONS 1) Dispositif pour permettre la liaison d'un moteur à explosion flottant et le pot d'échappement fixé sur la partie cycle et le châssis, caractérisé en ce qu'il comporte un emboîtement des éléments métalliques du système d'échappement, leur jonction et leur articulation. 1) Device for allowing the connection of a floating internal combustion engine and the muffler fixed to the cycle part and the chassis, characterized in that it comprises an interlocking of the metallic elements of the exhaust system, their junction and their articulation. 2) Dispositif selon la revendication 1 caractérisé en ce que le coude d'échappement (1) peut se déplacer en rotation dans le pot d'échappement (2) tout en assurant la libre circulation du flux des gaz d'échappement. 2) Device according to claim 1 characterized in that the exhaust elbow (1) can move in rotation in the exhaust pipe (2) while ensuring the free circulation of the flow of exhaust gases. 3) Dispositif selon la revendication 1 ou la revendication 2 caractérisé en ce que deux ressorts (3) permettent une jonction permanente des pièces métalliques (1) et (2) emboîtées, ainsi qu'une rotation de ces pièces l'une dans l'autre.  3) Device according to claim 1 or claim 2 characterized in that two springs (3) allow a permanent junction of the metal parts (1) and (2) nested, as well as a rotation of these parts one in the other. 4) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que qu'il est ainsi possible de relier efficacement, sans fuite, le coude d'échappement d'un moteur à explosion mobile et son pot d'échappement fixe (4). 4) Device according to any one of the preceding claims, characterized in that it is thus possible to effectively connect, without leakage, the exhaust elbow of a mobile internal combustion engine and its fixed exhaust pipe (4) . 5) Dispositif selon l'une quelconque des revendications précédentes caractérisé par l'emboîtement de la partie femelle (7) du coude d'échappement (l) dans la partie mâle (8) du pot d'échappement (2) qui comporte un talon métallique permettant l'arrêt de la pénétration de la partie mâle (7) dans la partie femelle (8 > .  5) Device according to any one of the preceding claims characterized by the fitting of the female part (7) of the exhaust elbow (l) in the male part (8) of the exhaust pipe (2) which has a heel metallic allowing the penetration of the male part (7) to stop in the female part (8>. 6) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que les deux ressorts (3) sont maintenus en place en extension à l'aide de quatre agrafes dont deux sont soudées sur le coude d'échappement (1) et les deux autres soudées sur le pot d'échappement (4).  6) Device according to any one of the preceding claims, characterized in that the two springs (3) are held in place in extension by means of four clips, two of which are welded to the exhaust elbow (1) and the two others welded to the exhaust pipe (4).
FR8802334A 1988-02-23 1988-02-23 Exhaust system - has engine-mounted curved exhaust pipe which rotate in coupling attached to fixed silencer Withdrawn FR2627543A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8802334A FR2627543A1 (en) 1988-02-23 1988-02-23 Exhaust system - has engine-mounted curved exhaust pipe which rotate in coupling attached to fixed silencer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8802334A FR2627543A1 (en) 1988-02-23 1988-02-23 Exhaust system - has engine-mounted curved exhaust pipe which rotate in coupling attached to fixed silencer

Publications (1)

Publication Number Publication Date
FR2627543A1 true FR2627543A1 (en) 1989-08-25

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FR8802334A Withdrawn FR2627543A1 (en) 1988-02-23 1988-02-23 Exhaust system - has engine-mounted curved exhaust pipe which rotate in coupling attached to fixed silencer

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0809002A1 (en) * 1996-05-21 1997-11-26 Ducati Motorcycles S.p.A. Device for modifying the height of an exhaust silencer of a vehicle of motorcycle type from the ground

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2020054A (en) * 1933-05-27 1935-11-05 Ford Motor Co Automobile chassis construction
FR962418A (en) * 1950-06-10
FR1325044A (en) * 1962-03-15 1963-04-26 Motobecane Ateliers Improvements made to automobile vehicle engine exhaust pipes
DE1292670B (en) * 1964-02-17 1969-04-17 Boysen Friedrich Exhaust system for internal combustion engines with two rows of cylinders
FR2105670A5 (en) * 1970-09-04 1972-04-28 Deville Paul
DE2525946A1 (en) * 1975-06-11 1976-12-23 Volkswagenwerk Ag Flexible sealed connection between exhaust pipes - has inner pipe and extension sleeve sandwiching outer pipe with tension spring lock
FR2321591A1 (en) * 1975-08-18 1977-03-18 Honda Motor Co Ltd REACTOR FOR EXHAUST SYSTEM OF INTERNAL COMBUSTION ENGINE AND ENGINE EQUIPPED WITH REACTOR
DE3026730A1 (en) * 1980-07-15 1982-02-04 Adam Opel AG, 6090 Rüsselsheim First-stage vehicle engine exhaust silencer - has vibration damping connections between inlet and outlet and between inlet and housing

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR962418A (en) * 1950-06-10
US2020054A (en) * 1933-05-27 1935-11-05 Ford Motor Co Automobile chassis construction
FR1325044A (en) * 1962-03-15 1963-04-26 Motobecane Ateliers Improvements made to automobile vehicle engine exhaust pipes
DE1292670B (en) * 1964-02-17 1969-04-17 Boysen Friedrich Exhaust system for internal combustion engines with two rows of cylinders
FR2105670A5 (en) * 1970-09-04 1972-04-28 Deville Paul
DE2525946A1 (en) * 1975-06-11 1976-12-23 Volkswagenwerk Ag Flexible sealed connection between exhaust pipes - has inner pipe and extension sleeve sandwiching outer pipe with tension spring lock
FR2321591A1 (en) * 1975-08-18 1977-03-18 Honda Motor Co Ltd REACTOR FOR EXHAUST SYSTEM OF INTERNAL COMBUSTION ENGINE AND ENGINE EQUIPPED WITH REACTOR
DE3026730A1 (en) * 1980-07-15 1982-02-04 Adam Opel AG, 6090 Rüsselsheim First-stage vehicle engine exhaust silencer - has vibration damping connections between inlet and outlet and between inlet and housing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0809002A1 (en) * 1996-05-21 1997-11-26 Ducati Motorcycles S.p.A. Device for modifying the height of an exhaust silencer of a vehicle of motorcycle type from the ground
US5783781A (en) * 1996-05-21 1998-07-21 Ducati Motor, S.P.A. Device for modifying the height of an exhaust silencer of a vehicle of motorcycle type from the ground

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