EP1586753A2 - Syst me de fixation d'un groupe d'échappement a un scooter - Google Patents

Syst me de fixation d'un groupe d'échappement a un scooter Download PDF

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Publication number
EP1586753A2
EP1586753A2 EP05102728A EP05102728A EP1586753A2 EP 1586753 A2 EP1586753 A2 EP 1586753A2 EP 05102728 A EP05102728 A EP 05102728A EP 05102728 A EP05102728 A EP 05102728A EP 1586753 A2 EP1586753 A2 EP 1586753A2
Authority
EP
European Patent Office
Prior art keywords
scooter
muffler
fastening system
exhaust
frame
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Withdrawn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
EP05102728A
Other languages
German (de)
English (en)
Other versions
EP1586753A3 (fr
Inventor
Francesco Caratelli
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.)
Piaggio and C SpA
Original Assignee
Piaggio and C SpA
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 Piaggio and C SpA filed Critical Piaggio and C SpA
Publication of EP1586753A2 publication Critical patent/EP1586753A2/fr
Publication of EP1586753A3 publication Critical patent/EP1586753A3/fr
Withdrawn legal-status Critical Current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
    • F01N13/1822—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 for fixing exhaust pipes or devices to vehicle body
    • 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
    • F01N13/1816—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 the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes

Definitions

  • the present invention concerns a fastening system of an exhaust group to a scooter.
  • the engine In the field of two-wheeled vehicles known as scoters, the engine is typically an integral part of the rear fork that in such a way makes the rear suspension.
  • the engine is "hinged" to the frame and oscillates with respect to it about a centre of rotation.
  • the muffler is therefore installed integrally to the engine, fixing the manifold of the muffler to the exhaust hole present on the engine, whereas the end part thereof is fixed to the engine by means of a rear suspension element.
  • a suspension element is, in general, also used for the attachment of the shock absorber.
  • the muffler like the engine, also has an oscillating movement with respect to the frame and, consequently, the entire exhaust system increases the so-called “non-suspended mass" of the vehicle.
  • this is the mass of the components of the vehicle integral with the wheels.
  • rider comfort can even reach critical levels also from the point of view of safety.
  • the purpose of the present invention is that of solving the problems of the prior art by providing a fastening system of an exhaust group to a scooter that allows the non-suspended masses to be reduced and allows the suspended masses of the vehicle to be increased, at the same time improving rider comfort.
  • Another purpose of the present invention is that of providing a fastening system of an exhaust group to a scooter that allows the transmission of the vibrations generated by the unevenness of the road surface in the interface points between vehicle and rider to be decreased.
  • Another purpose of the present invention is that of providing a reliable and safe fastening system of an exhaust group to a scooter that is, at the same time, easy and cost-effective to produce.
  • a fastening system of an exhaust group comprising at least one muffler and at least one manifold pipe to a scooter according to the present invention is characterised in that it comprises at least one flexible coupling, arranged between the muffler and the exhaust hole of the engine, and attachment means suitable for connecting the muffler to the frame of the scooter.
  • a fastening system of an exhaust group equipped with at least one muffler 2 and with at least one manifold pipe 3', 3, 4, to a scooter 10 is shown.
  • the fastening system has a flexible coupling 5, arranged between the muffler 2 and the exhaust hole 6 of the engine 7, and suitable attachment means 8 suitable for connecting the muffler 2 to the frame 9 of the scooter.
  • attachment means 8 are arranged to fasten the muffler 2, near to its rear portion, to the end portion of the frame 9.
  • the attachment means 8 are represented by a first bracket 14, integral with the muffler 2, by a second bracket 15, integral with the frame 9, and by a support arm 16, hinged to both of the brackets 14, 15.
  • the support arm 16 is hinged, through known means such as screws and bolts, at one end to the first bracket 14 and at the other end to the second bracket 15.
  • the support arm 16 could be integral with the frame 9, in other words made as a projecting portion of the frame itself, and hinged at the free end to a bracket integral with the muffler 2.
  • suspension arm 16 can be integral with the muffler 2 and be hinged to a bracket integral with the frame 9.
  • the flexible coupling 5 is connected and arranged between a first 3 and second 4 manifold pipe.
  • first manifold pipe 3 connects the coupling 5 to the exhaust hole 6 of the engine 7, whereas the second manifold pipe 4 connects the coupling 5 to the muffler 2.
  • the flexible coupling 5 is positioned near to the centre of rotation 11 of the engine 7 with respect to the frame 9 so as to reduce possible ripping away on the coupling itself, whilst the scooter 10 moves.
  • protective elements 12, 13 are foreseen, at least one of which is hinged on the centre of rotation 11 of the engine 7 with respect to the frame 9.
  • the two protective elements 12, 13 partially wrap around the flexible coupling 5 and the end portions of the manifold pipes 3 and 4 and are shaped to protect the coupling, as well as from torsions, also from relative axial and lateral movements of the manifold pipes 3 and 4.
  • FIG 4 an alternative embodiment of the present invention is shown that is totally similar to the one illustrated in figures 1 to 3 apart from the fact that it has just one manifold pipe 3' and attachment means 8 of the muffler 2 to the alternative frame 9.
  • manifold pipe 3' is connected at one end to the exhaust hole 6 of the engine 7 and at the other end to the flexible coupling 5.
  • the flexible coupling 5, as shown in figure 4, is directly connected to the muffler 2.
  • the flexible coupling 5 is positioned at the centre of rotation 11 of the engine 7 with respect to the frame.
  • the attachment means 8, as shown in figure 4 according to the present embodiment, comprise a first bracket 14', integral with the muffler 2, hinged directly to the frame 9 of the scooter 10.
  • the fastening system of the exhaust group to the scooter according to the present invention allows the mass of the exhaust group to be transformed from non-suspended mass into suspended mass, improving rider comfort.
  • the mass of the exhaust group is no longer, like in conventional scooters, integral with the engine and with its oscillations with respect to the frame, but is separate from it and from its oscillating movements, so as to be suspended at the frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP05102728A 2004-04-14 2005-04-07 Système de fixation d'un groupe d'échappement a un scooter Withdrawn EP1586753A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20040736 ITMI20040736A1 (it) 2004-04-14 2004-04-14 Sistema di aggancio di un gruppo di scarico ad uno scooter
ITMI20040736 2004-04-14

Publications (2)

Publication Number Publication Date
EP1586753A2 true EP1586753A2 (fr) 2005-10-19
EP1586753A3 EP1586753A3 (fr) 2007-05-30

Family

ID=34939174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05102728A Withdrawn EP1586753A3 (fr) 2004-04-14 2005-04-07 Système de fixation d'un groupe d'échappement a un scooter

Country Status (4)

Country Link
EP (1) EP1586753A3 (fr)
CN (1) CN1683204A (fr)
IT (1) ITMI20040736A1 (fr)
TW (1) TW200537013A (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307998A1 (de) * 1993-03-13 1994-09-15 Porsche Ag Vorrichtung zum Vermindern von Karosserieeigenschwingungen
JPH06336922A (ja) * 1993-05-31 1994-12-06 Suzuki Motor Corp スクータ型車両の排気マフラ
JPH07166859A (ja) * 1993-12-16 1995-06-27 Yamaha Motor Co Ltd 自動二輪車等の取付角度可変自在のマフラー
EP0875409A1 (fr) * 1997-04-28 1998-11-04 Scambia Industrial Developments Aktiengesellschaft Système d'échappement pour véhicules automobiles et procédé pour la formation d'un système d'échappement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307998A1 (de) * 1993-03-13 1994-09-15 Porsche Ag Vorrichtung zum Vermindern von Karosserieeigenschwingungen
JPH06336922A (ja) * 1993-05-31 1994-12-06 Suzuki Motor Corp スクータ型車両の排気マフラ
JPH07166859A (ja) * 1993-12-16 1995-06-27 Yamaha Motor Co Ltd 自動二輪車等の取付角度可変自在のマフラー
EP0875409A1 (fr) * 1997-04-28 1998-11-04 Scambia Industrial Developments Aktiengesellschaft Système d'échappement pour véhicules automobiles et procédé pour la formation d'un système d'échappement

Also Published As

Publication number Publication date
TW200537013A (en) 2005-11-16
CN1683204A (zh) 2005-10-19
EP1586753A3 (fr) 2007-05-30
ITMI20040736A1 (it) 2004-07-14

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