FR2685733A1 - Exhaust silencer for mopeds, motorbikes and the like - Google Patents

Exhaust silencer for mopeds, motorbikes and the like Download PDF

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Publication number
FR2685733A1
FR2685733A1 FR9116499A FR9116499A FR2685733A1 FR 2685733 A1 FR2685733 A1 FR 2685733A1 FR 9116499 A FR9116499 A FR 9116499A FR 9116499 A FR9116499 A FR 9116499A FR 2685733 A1 FR2685733 A1 FR 2685733A1
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FR
France
Prior art keywords
exhaust
ring
parts
mopeds
motorbikes
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
FR9116499A
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French (fr)
Other versions
FR2685733B1 (en
Inventor
Assadourian Gilles
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.)
MOTAREX SA
Original Assignee
MOTAREX SA
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 MOTAREX SA filed Critical MOTAREX SA
Priority to FR9116499A priority Critical patent/FR2685733A1/en
Publication of FR2685733A1 publication Critical patent/FR2685733A1/en
Application granted granted Critical
Publication of FR2685733B1 publication Critical patent/FR2685733B1/fr
Granted 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
    • 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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/166—Silencing apparatus characterised by method of silencing by using movable parts for changing gas flow path through the silencer or for adjusting the dimensions of a chamber or a pipe
    • 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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/04—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues in exhaust systems only, e.g. for sucking-off combustion gases
    • F02B27/06—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues in exhaust systems only, e.g. for sucking-off combustion gases the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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

Abstract

The exhaust pipe for mopeds, motorbikes and the like is noteworthy in that it is made up of two half-parts (1-2) of substantially equal length and shape, the said half-parts being arranged with opposing faces (1.1-2.1) capable of being fitted together over a predetermined travel while retaining conditions of leaktightness, and operating like a piston, the other ends of each of the two parts being laid out in a known manner so as to fit respectively to a cylinder head of the motor vehicle in question and to a chassis for supporting the latter.

Description

POT D'ECHAPPEMENT POUR CYCLOMOTEURS, MOTOS ET SIMILAIRES
L'invention se rattache au secteur technique des organes d'échappement de véhicules à moteur, et en particulier de cyclomoteurs, motos et machines similaires.EXHAUST SYSTEM FOR MOPEDS, MOTORCYCLES AND THE LIKE
The invention relates to the technical sector of the exhaust components of motor vehicles, and in particular of mopeds, motorcycles and similar machines.

Actuellement, tous les cyclomoteurs et similaires sont équipés d'un pot d'échappement des gaz qui est conçu monobloc, en un matériau acier de formes et dimensions appropriées. Currently, all mopeds and the like are equipped with a exhaust gas exhaust which is designed in one piece, in a steel material of appropriate shapes and dimensions.

Pour améliorer et donner une plus grande vitesse de pointe ou accélération, on prévoit généralement un montage flottant de l'une des extrémités du pot d'échappement qui est associée à un élément de raccordement au bloc cylindre du cyclomoteur. Ce montage flottant est obtenu par la réalisation d'un raccord tubulaire à profil en L dont une extrémité s'engage à la manière d'un piston à l'intérieur de l'extrémité en regard du pot d'échappement. Ainsi, au moment des accélérations, l'extrémité du raccord peut sensiblement se déplacer à l'intérieur du pot d'échappement et permettre, par ce jeu, une sensible augmentation de puissance donnant l'effet d'accélération recherché. To improve and give a greater top speed or acceleration, there is generally provided a floating mounting of one of the ends of the exhaust pipe which is associated with a connection element to the cylinder block of the moped. This floating assembly is obtained by making a tubular connection with an L-profile, one end of which engages like a piston inside the opposite end of the exhaust pipe. Thus, at the time of acceleration, the end of the connector can move substantially inside the exhaust and allow, by this play, a significant increase in power giving the desired acceleration effect.

On comprend néanmoins que cette réalisation trouve des limites par suite des faibles diamètres des parties de raccord et de pot concernées, et de la course limitée du déplacement d'une pièce par rapport à l'autre. It is nevertheless understood that this embodiment finds limits as a result of the small diameters of the connector and pot parts concerned, and of the limited travel of the movement of one part with respect to the other.

Différentes tentatives ont été effectuées pour essayer d'améliorer l'effet recherché tout en maintenant l'utilisation sans modification d'un pot d'échappement monobloc, ces tentatives s'orientant toujours dans les structures d'aménagement des extrémités des pots d'échappement avec les zones de raccordement avec le bloc cylindre.  Various attempts have been made to try to improve the desired effect while maintaining the use without modification of a monobloc exhaust pipe, these attempts always being oriented in the structures for fitting the ends of the exhaust pipes with the connection areas with the cylinder block.

L'objet de l'invention a consisté à appréhender de manière différente le problème en examinant en particulier un aménagement possible du corps même du pot d'échappement en vue d'obtenir des performances améliorées tout en conservant les caractéristiques d'étanchéité des pots et en maîtrisant leur coût de fabrication. The object of the invention was to understand the problem differently by examining in particular a possible arrangement of the body of the exhaust pipe itself in order to obtain improved performance while retaining the sealing characteristics of the pipes and by controlling their manufacturing cost.

Ainsi, selon une première caractéristique de l'invention, le pot d'échappement pour cyclomoteurs, motos et similaires est remarquable en ce qu'il est constitué en deux demi-parties de profil et longueur sensiblement égaux, lesdites demi-parties étant agencées avec des faces en regard susceptibles de s'emboîter selon une course déterminée tout en préservant les conditions d'étanchéité, et fonctionnant à la manière d'un piston, les extrémités de chacune des deux parties étant agencées de manière connue pour s'adapter respectivement à un bloc cylindre du véhicule moteur considéré et à un châssis support de ces derniers. Thus, according to a first characteristic of the invention, the muffler for mopeds, motorcycles and the like is remarkable in that it consists of two half-parts of substantially equal profile and length, said half-parts being arranged with facing faces capable of fitting together according to a determined stroke while preserving the sealing conditions, and operating in the manner of a piston, the ends of each of the two parts being arranged in a known manner to adapt respectively to a cylinder block of the motor vehicle in question and a chassis supporting these.

Ces caractéristiques et d'autres encore ressortiront bien de la suite de la description. These characteristics and others will emerge clearly from the following description.

Pour fixer l'objet de l'invention illustré non limitativement aux figures des dessins où
La figure 1 est une vue en perspective éclatée avant montage de ces éléments constitutifs du pot d'échappement pour cyclomoteurs.To fix the object of the invention illustrated without limitation to the figures of the drawings where
Figure 1 is an exploded perspective view before mounting of these components of the muffler for mopeds.

La figure 2 est une vue de profil montrant la fixation du pot d'échappement sur le bloc cylindre. Figure 2 is a side view showing the fixing of the exhaust pipe on the cylinder block.

La figure 3 est une vue en plan selon la figure 2. FIG. 3 is a plan view according to FIG. 2.

La figure 4 est une vue en coupe à grande échelle et partielle montrant la conception du pot d'échappement selon l'invention.  Figure 4 is a sectional view on a large scale and partial showing the design of the muffler according to the invention.

Afin de rendre plus concret l'objet de l'invention, on le décrit maintenant d'une manière non limitative aux figures des dessins. In order to make the object of the invention more concrete, it is now described in a nonlimiting manner in the figures of the drawings.

Le pot d'échappement selon l'invention est référencé dans son ensemble par (P). Il est constitué de deux parties (1 - 2) profilées et agencées respectivement avec une portée (1.1) cylindrique et une bague (2.1) cylindrique susceptibles de s'emboîter de manière télescopique l'une dans l'autre, ce montage étant effectué à emmanchement serré, et pouvant se déplacer l'une par rapport à l'autre à la manière d'un piston lors de la phase de démarrage et d'accélération donnée par le bloc cylindre. The exhaust pipe according to the invention is referenced as a whole by (P). It consists of two parts (1 - 2) profiled and arranged respectively with a cylindrical bearing surface (1.1) and a cylindrical ring (2.1) capable of fitting telescopically into each other, this assembly being carried out at tight fitting, and able to move relative to each other like a piston during the start-up and acceleration phase given by the cylinder block.

Plus particulièrement, la première partie (1) du pot d'échappement présente une forme tronconique (1.2) de grande longueur présentant en bout, dans sa zone d'évasement la plus large, une portée cylindrique (l.l), et à son autre extrémité opposée la plus étroite une tubulure (1.3) cylindrique de sortie d'échappement des gaz. More particularly, the first part (1) of the muffler has a frustoconical shape (1.2) of great length having at the end, in its widest flaring zone, a cylindrical bearing (ll), and at its other end opposite the narrowest a cylindrical pipe (1.3) for the exhaust gas outlet.

Accessoirement, cette tubulure (1.3) peut recevoir un si lencieux (3) emmanché, par sa bague (3.1), sur celle-ci.Incidentally, this tubing (1.3) can receive a lencieux (3) fitted, by its ring (3.1), on the latter.

Des ressorts (4) assurent le maintien du silencieux sur le corps de la première partie (1), étant prévues alors des pattes de fixation (5 et 6) et d'attache des extrémités des ressorts. Le corps (1) est agencé également pour recevoir un support de fixation (7) pouvant s'adapter au bâti ou structure support du cyclomoteurs.Springs (4) maintain the silencer on the body of the first part (1), being then provided fixing lugs (5 and 6) and attachment of the ends of the springs. The body (1) is also arranged to receive a fixing support (7) which can adapt to the frame or support structure of the mopeds.

L'autre partie (2) du pot d'échappement présente de manière similaire une forme tronconique (2.2) de grande longueur avec, du côté de sa partie ouverte la plus large, la bague (2.1) précitée de forme circulaire. Cette bague (2.1) est rapportée et soudée au corps de la partie (2), ou est associée à cette dernière par tout autre moyen de liaison. Cette bague (2.1) présente un alésage interne (2.3) susceptible de permettre la réception par emmanchement serré de la partie cylindrique (1.1) de l'élément (1) du pot d'échappement. The other part (2) of the muffler similarly has a frustoconical shape (2.2) of great length with, on the side of its widest open part, the above-mentioned ring (2.1) of circular shape. This ring (2.1) is attached and welded to the body of the part (2), or is associated with the latter by any other connecting means. This ring (2.1) has an internal bore (2.3) capable of allowing reception by tight fitting of the cylindrical part (1.1) of the element (1) of the exhaust pipe.

La bague (2.1) présente, à son extrémité libre, une collerette (2.4) de plus grand diamètre que la bague (2.1) et agencée avec au moins un rainurage intérieur (2.5) pour la réception d'au moins un joint torique (8) d'étanchéité après montage de la partie cylindrique (1.1) de l'élément (l).  The ring (2.1) has, at its free end, a flange (2.4) of larger diameter than the ring (2.1) and arranged with at least one internal grooving (2.5) for the reception of at least one O-ring (8 ) sealing after mounting of the cylindrical part (1.1) of the element (l).

L'autre extrémité (2.6) de l'élément (2) du pot est coudée et est agencée pour coopérer de manière classique et s'ajuster aux éléments du bloc cylindre. The other end (2.6) of the element (2) of the pot is bent and is arranged to cooperate in a conventional manner and to adjust to the elements of the cylinder block.

Ainsi, la nouvelle conception du pot d'échappement permet d'obtenir de meilleures accélérations au démarrage par suite du diamètre de course plus grand donné par l'assemblage des deux éléments du pot d'échappement et sur une longueur de course sensiblement plus importante. Thus, the new design of the muffler makes it possible to obtain better accelerations at start-up as a result of the larger stroke diameter given by the assembly of the two elements of the muffler and over a significantly greater stroke length.

Il y a lieu de noter également que la conception du pot d'échappement selon l'invention permet une auto-lubrification de ses éléments constitutifs par suite du passage des gaz dans le pot. Le montage des deux éléments entre eux s'effectue par emmanchement à force avec tolérance de quelques centièmes pour assurer une étanchéité totale aux bruits. It should also be noted that the design of the exhaust pipe according to the invention allows self-lubrication of its constituent elements as a result of the passage of gases in the pot. The assembly of the two elements between them is effected by force fitting with tolerance of a few hundredths to ensure a total seal against noise.

Accessoirement, un autre avantage de l'invention réside dans le fait qu'il est possible de réparer l'un des éléments (1 ou 2) du pot d'échappement en cas de détérioration, sans forcément entraîner le changement complet et total du pot d'échappement tel qu'il était pratiqué antérieurement. Incidentally, another advantage of the invention lies in the fact that it is possible to repair one of the elements (1 or 2) of the muffler in the event of deterioration, without necessarily causing the complete and total change of the muffler exhaust as previously practiced.

La conception du nouveau pot d'échappement est simple bien que sensiblement plus coûteuse mais les performances enregistrées sont très supérieures au montage flottant telles que rappelées dans le préambule de la présente Demande.  The design of the new exhaust is simple although significantly more expensive but the performance recorded is much higher than the floating assembly as mentioned in the preamble to this Application.

Claims (4)

REVENDICATIONS -1- Pot d'échappement pour cyclomoteurs, motos et similaires, caractérisé en ce qu'il est constitué en deux demi-parties (1 - 2) de profil et longueur sensiblement égaux, lesdites demi-parties étant agencées avec des faces en regard (1.1 - 2.1) susceptibles de s'emboîter selon une course déterminée tout en préservant les conditions d'étanchéité, et fonctionnant à la manière d'un piston, les autres extrémités de chacune des deux parties étant agencées de manière connue pour s'adapter respectivement à un bloc cylindre du véhicule moteur considéré et à un châssis support de ces derniers.-1- Exhaust for mopeds, motorcycles and the like, characterized in that it consists of two half-parts (1 - 2) of substantially equal profile and length, said half-parts being arranged with facing faces (1.1 - 2.1) capable of fitting together according to a determined stroke while preserving the sealing conditions, and operating in the manner of a piston, the other ends of each of the two parts being arranged in a known manner to adapt respectively to a cylinder block of the motor vehicle in question and to a chassis supporting the latter. -2- Pot d'échappement selon la revendication 1, caractérisé en ce que la première partie du tuyau d'échappement présente une forme tronconique (1.2) de grande longueur présentant dans sa zone d'évasement la plus large une portée cylindrique (1.1) et, à son autre extrémité opposée la plus étroite, une tubulure (1.3) de sortie d'échappement des gaz.-2- Exhaust according to claim 1, characterized in that the first part of the exhaust pipe has a frustoconical shape (1.2) of great length having in its widest flaring zone a cylindrical bearing (1.1) and, at its other narrowest opposite end, a gas exhaust outlet pipe (1.3). -3- Pot d'échappement selon l'une quelconque des revendications 1 et 2, caractérisé en ce que l'autre partie (2) du pot d'échappement présente une forme tronconique (2.2) de grande longueur avec du coté de sa partie ouverte la plus large une bague (2.1) circulaire, ladite bague présentant un alésage interne (2.3) de la partie cylindrique (1.1), ladite bague (2.1) présentant en outre à son extrémité libre une collerette (2.4) de plus grand diamètre et agencée avec au moins un rainurage intérieur (2.5) pour la réception d'au moins un joint torique (8) d'étanchéité. -3- Exhaust according to any one of claims 1 and 2, characterized in that the other part (2) of the exhaust has a frustoconical shape (2.2) of great length with the side of its part widest open a circular ring (2.1), said ring having an internal bore (2.3) of the cylindrical part (1.1), said ring (2.1) further having at its free end a flange (2.4) of larger diameter and arranged with at least one internal groove (2.5) for receiving at least one O-ring (8) for sealing. -4- Pot d'échappement selon la revendication 3, caractérisé en ce que la bague est rapportée et fixée par soudure au corps de la partie (2) du pot d'échappement. -4- Exhaust according to claim 3, characterized in that the ring is attached and fixed by welding to the body of the part (2) of the exhaust.
FR9116499A 1991-12-31 1991-12-31 Exhaust silencer for mopeds, motorbikes and the like Granted FR2685733A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9116499A FR2685733A1 (en) 1991-12-31 1991-12-31 Exhaust silencer for mopeds, motorbikes and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9116499A FR2685733A1 (en) 1991-12-31 1991-12-31 Exhaust silencer for mopeds, motorbikes and the like

Publications (2)

Publication Number Publication Date
FR2685733A1 true FR2685733A1 (en) 1993-07-02
FR2685733B1 FR2685733B1 (en) 1995-04-28

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FR9116499A Granted FR2685733A1 (en) 1991-12-31 1991-12-31 Exhaust silencer for mopeds, motorbikes and the like

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FR (1) FR2685733A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3147210A3 (en) * 2015-09-28 2017-05-10 Ewatt Technology Co., Ltd. Unmanned helicopter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR328252A (en) * 1903-01-01 1903-07-08 Heinrich Fischer Exhaust for explosive and steam machines
GB2162894A (en) * 1984-08-09 1986-02-12 Josef Petr Prokopius A variable volume expansion chamber for i.c. engine exhaust gases
FR2619414A1 (en) * 1987-08-10 1989-02-17 Cdc Srl System for automatically adjusting the length of the exhaust pipe for burnt gases on the basis of the number of revolutions of the engine
DE3803320A1 (en) * 1988-02-04 1989-08-17 Martin Wimmer Internal combustion engine
JPH01240729A (en) * 1988-03-19 1989-09-26 Honda Motor Co Ltd Exhaust device for two-cycle engine
JPH02191813A (en) * 1989-01-19 1990-07-27 Honda Motor Co Ltd Exhaust pipe for two-cycle engine
JPH02230918A (en) * 1989-03-02 1990-09-13 Honda Motor Co Ltd Exhaust pipe for two-cycle engine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR328252A (en) * 1903-01-01 1903-07-08 Heinrich Fischer Exhaust for explosive and steam machines
GB2162894A (en) * 1984-08-09 1986-02-12 Josef Petr Prokopius A variable volume expansion chamber for i.c. engine exhaust gases
FR2619414A1 (en) * 1987-08-10 1989-02-17 Cdc Srl System for automatically adjusting the length of the exhaust pipe for burnt gases on the basis of the number of revolutions of the engine
DE3803320A1 (en) * 1988-02-04 1989-08-17 Martin Wimmer Internal combustion engine
JPH01240729A (en) * 1988-03-19 1989-09-26 Honda Motor Co Ltd Exhaust device for two-cycle engine
JPH02191813A (en) * 1989-01-19 1990-07-27 Honda Motor Co Ltd Exhaust pipe for two-cycle engine
JPH02230918A (en) * 1989-03-02 1990-09-13 Honda Motor Co Ltd Exhaust pipe for two-cycle engine

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 573 (M-909)19 Décembre 1989 & JP-A-1 240 729 ( HONDA MOTOR CO LTD ) 26 Septembre 1989 *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 478 (M-1036)18 Octobre 1990 & JP-A-2 191 813 ( HONDA MOTOR CO ) 27 Juillet 1990 *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 545 (M-1054)4 Décembre 1990 & JP-A-2 230 918 ( HONDA MOTOR CO ) 13 Septembre 1990 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3147210A3 (en) * 2015-09-28 2017-05-10 Ewatt Technology Co., Ltd. Unmanned helicopter

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Publication number Publication date
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