USRE35675E - Engine cooling system for motorcycle - Google Patents

Engine cooling system for motorcycle Download PDF

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Publication number
USRE35675E
USRE35675E US07/861,555 US86155592A USRE35675E US RE35675 E USRE35675 E US RE35675E US 86155592 A US86155592 A US 86155592A US RE35675 E USRE35675 E US RE35675E
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United States
Prior art keywords
air inlet
motorcycle
main frame
frame members
engine
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
US07/861,555
Inventor
Mitsuo Kitada
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.)
Yamaha Motor Co Ltd
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Yamaha Motor Co Ltd
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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to US07/861,555 priority Critical patent/USRE35675E/en
Application granted granted Critical
Publication of USRE35675E publication Critical patent/USRE35675E/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • 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
    • 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
    • F02B27/005—Oscillating pipes with charging achieved by arrangement, dimensions or shapes of intakes pipes or chambers; Ram air pipes
    • 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
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
    • 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

Definitions

  • This invention relates to an engine cooling system for motorcycles and more particularly to an improved system for directing cool air to the air induction system of a motorcycle engine.
  • This invention is adapted to be embodied in a motorcycle having a frame that is comprised of a head pipe and a pair of main frame members that have a box section configuration and which are fixed at their forward ends to the head pipe.
  • the main frame members extend rearwardly and downwardly from the head pipe and diverge from each other in the vicinity of their connection to the head pipe.
  • a front wheel is dirigibly supported by the head pipe and an engine is carried by the frame and positioned at least in substantial part below the main frame member.
  • the engine has a charge forming system including a rearwardy extending air inlet positioned at least in substantial part below the upper surfaces of the main frame members.
  • a fuel tank is supported upon the main frame members and above the engine and the engine air inlet. The fuel tank lower surface and the side surfaces of the main frame members define a ram air inlet channel for directing ram air to the engine air inlet.
  • FIG. 1 is a side elevational view of a motorcycle constructed in accordance with an embodiment of the invention.
  • FIG. 2 is an enlarged side elevational view, with portions broken away and other portions shown in section, showing the engine air induction system.
  • FIG. 3 is a top plan view of the frame and engine relationship with certain components removed so as to more clearly show the construction.
  • FIG. 4 is a view taken in the direction of the arrow 4 in FIG. 2.
  • FIG. 5 is a cross-sectional view taken along the line 5--5 of FIG. 2.
  • a motorcycle constructed in accordance with an embodiment of the invention is identified generally by the reference numeral 11.
  • the motorcycle 11 includes a frame assembly, indicated generally by the reference numeral 12, which is a welded up assembly that includes a head pipe 13.
  • Affixed to the head pipe 13 are a pair of main frame members 14 that have a generally box like configuration in cross-section and which may be conveniently formed by welding a pair of stamped sections together.
  • the main frame members 14 diverge from each other in the area where they are affixed to the head pipe 13 and then extend parallel for a substantial portion of their length as may be best seen in FIGS. 3 through 5.
  • the main frame members 14 extend generally rearwardly and downwardly from the head pipe 13.
  • the main frame members 14 are joined together at their rearward ends by welding them to a casting 15.
  • a pair of down tubes 16 are connected to the main frame members 14 by means of a briding reinforcing member 17.
  • the down tubes 16 are connected at their other ends to the casting 15 in an appropriate manner.
  • a pair of seat rails 18 extend rearwardly from the main frame members 14 and are integrally connected at their rear ends.
  • the seat rails 18 are supported at each side of the frame assembly 12 by means of seat pillar rails 19 that extend between the casting 15 and the rearward portions of the seat rails 18.
  • a front wheel 21 is dirigibly supported from the frame 12 and specifically from the head pipe 13 by means of a front fork 22.
  • a handlebar assembly 23 is connected to the front fork 22 for steering of the front wheel 21 in a known manner.
  • a rear wheel 24 is supported by a trailing arm assembly 25 which is, in turn, pivotally journaled by the frame casting 15 by means of a pair of pivot shafts 26.
  • An engine is supported by the frame assembly 12 in a location that is substantially beneath the main frame members 14 so as to provide a low center of gravity.
  • the engine 27 includes a cylinder block and head assembly 28 that defines a pair of aligned cylinders that extend transversely across the width of the frame 12 in the area between the main frame members 14 and beneath them.
  • the engine 27 and specifically the cylinder block, cylinder head assembly 28 is provided with a pair of forwardly facing exhaust ports 29 that cooperate with an exhaust manifold, muffler arrangement 31 that discharges the exhaust gases rearwardly of the motorcycle 11.
  • the engine 27 is also provided with a charge forming and induction system in the form of a pair of carburetors 32 .Iadd.having rearwardly facing air inlet openings, as clearly seen in FIGS. 2 and 3, .Iaddend.that deliver a fuel/air mixture to the crankcase of the engine 27 by means of an induction manifold 33.
  • the engine 27 is of the two-cycle type and this is why the carburetors 32 discharge their fuel/air mixture into the crankcase of the engine 27. It is to be understood, however, that this invention may also be practiced with four-cycle engines having carburetors that are positioned to the rear of the cylinder block and beneath in substantial part the upper portions of the main frame members, for a reason which will become apparent.
  • the carburetors 32 are provided with an air inlet device in the form of a combined air cleaner and air silencer 34 which is also positioned at least in part below the main frame members 14 and is positioned rearwardly of the carburetors 32.
  • the engine 27 includes a combined crankcase and transmission assembly that drives an output shaft 35 which, in turn, drives the rear wheel 24 by means of a chain drive 36.
  • a fuel tank indicated generally by the reference numeral 37, is supported on the upper sides of the main frame members 14 and rearwardly of the head pipe 13.
  • a seat 38 is carried by the seat rails 18 and seat pillar rails 19 rearwardly of the fuel tank 37.
  • the engine 27 is at least in part water cooled and, for this purpose, a cooling radiator 39 is supported by the down tubes 16 forwardly of the engine 28 and beneath the main frame members 14.
  • the construction of the motorcycle 11 is such that a cooling air inlet channel, indicated generally by the reference numeral 41, is provided for delivering a source of plentiful ram air to the engine induction system.
  • the air channel 41 is defined by the inner side surfaces of the main frame members 14 and a lower surface 42 of the fuel tank 37. As may be seen in FIG.
  • this cooling channel is positioned at least in part above the radiator 39 and hence it is insured that there will be a good supply of air for the engine induction system.
  • this channel is configured in such a way as to create a ram effect for the inlet air since it tapers downwardly and rearwardly and is disposed with its open mouth forwardly of the motorcycle so that ram air will be well delivered to the engine induction system.
  • the motorcycle 11 has a very compact configuration, there will be an adequate supply of cooling air for the engine and also for the engine induction system.
  • FIG. 2 a portion of the air flowing through the air inlet channel 41 passes through the radiator 39 while another portion, as already noted, passes over the radiator.
  • the air flowing through the radiator is indicated in this figure by solid line arrows while the air flowing around the radiator is noted by broken line arrows. This air is supplied to the engine induction system..Iaddend.
  • the frame assembly 12 may be formed from any suitable material but preferably is formed from either aluminum castings and stampings or from steel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A motorcycle having an improved frame and fuel tank arrangement that define a ram air inlet channel for delivering cooling air to the engine induction system.

Description

BACKGROUND OF THE INVENTION
This invention relates to an engine cooling system for motorcycles and more particularly to an improved system for directing cool air to the air induction system of a motorcycle engine.
The compactness of motorcycles is well known. Because of their extremely compact nature, there are a number of problems to be overcome in designing a successful motorcycle. One of the main problems is designing the engine mounting and air flow system in such a way as to insure that a good supply of clean cool fresh air is provided to the engine induction system. Recently, it has been the practice to position the carburetors or induction system for the engine to the rear of the engine so that the air cleaners and air inlet devices are positioned in the area of the rider's seat so that they will be protected from the intrusion of foreign matter. However, such a location makes it difficult to provide an adequate supply of cool air to the engine induction system.
It is, therefore, a principal object of this invention to provide an improved motorcycle engine cooling system.
It is another object of this invention to provide an improved motorcycle arrangement for permitting a rearwardly positioned air inlet and yet insuring adequate air supply to the engine.
It is another object of this invention to design the motorcycle frame and associated components so that they act as a ram air inlet device for the engine induction system.
SUMMARY OF THE INVENTION
This invention is adapted to be embodied in a motorcycle having a frame that is comprised of a head pipe and a pair of main frame members that have a box section configuration and which are fixed at their forward ends to the head pipe. The main frame members extend rearwardly and downwardly from the head pipe and diverge from each other in the vicinity of their connection to the head pipe. A front wheel is dirigibly supported by the head pipe and an engine is carried by the frame and positioned at least in substantial part below the main frame member. The engine has a charge forming system including a rearwardy extending air inlet positioned at least in substantial part below the upper surfaces of the main frame members. A fuel tank is supported upon the main frame members and above the engine and the engine air inlet. The fuel tank lower surface and the side surfaces of the main frame members define a ram air inlet channel for directing ram air to the engine air inlet.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevational view of a motorcycle constructed in accordance with an embodiment of the invention.
FIG. 2 is an enlarged side elevational view, with portions broken away and other portions shown in section, showing the engine air induction system.
FIG. 3 is a top plan view of the frame and engine relationship with certain components removed so as to more clearly show the construction.
FIG. 4 is a view taken in the direction of the arrow 4 in FIG. 2.
FIG. 5 is a cross-sectional view taken along the line 5--5 of FIG. 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
A motorcycle constructed in accordance with an embodiment of the invention is identified generally by the reference numeral 11. The motorcycle 11 includes a frame assembly, indicated generally by the reference numeral 12, which is a welded up assembly that includes a head pipe 13. Affixed to the head pipe 13 are a pair of main frame members 14 that have a generally box like configuration in cross-section and which may be conveniently formed by welding a pair of stamped sections together. The main frame members 14 diverge from each other in the area where they are affixed to the head pipe 13 and then extend parallel for a substantial portion of their length as may be best seen in FIGS. 3 through 5. In addition, the main frame members 14 extend generally rearwardly and downwardly from the head pipe 13.
The main frame members 14 are joined together at their rearward ends by welding them to a casting 15. In addition, a pair of down tubes 16 are connected to the main frame members 14 by means of a briding reinforcing member 17. The down tubes 16 are connected at their other ends to the casting 15 in an appropriate manner.
A pair of seat rails 18 extend rearwardly from the main frame members 14 and are integrally connected at their rear ends. The seat rails 18 are supported at each side of the frame assembly 12 by means of seat pillar rails 19 that extend between the casting 15 and the rearward portions of the seat rails 18.
A front wheel 21 is dirigibly supported from the frame 12 and specifically from the head pipe 13 by means of a front fork 22. A handlebar assembly 23 is connected to the front fork 22 for steering of the front wheel 21 in a known manner.
A rear wheel 24 is supported by a trailing arm assembly 25 which is, in turn, pivotally journaled by the frame casting 15 by means of a pair of pivot shafts 26.
An engine, indicated generally by the reference numeral 27, is supported by the frame assembly 12 in a location that is substantially beneath the main frame members 14 so as to provide a low center of gravity. The engine 27 includes a cylinder block and head assembly 28 that defines a pair of aligned cylinders that extend transversely across the width of the frame 12 in the area between the main frame members 14 and beneath them. The engine 27 and specifically the cylinder block, cylinder head assembly 28 is provided with a pair of forwardly facing exhaust ports 29 that cooperate with an exhaust manifold, muffler arrangement 31 that discharges the exhaust gases rearwardly of the motorcycle 11.
The engine 27 is also provided with a charge forming and induction system in the form of a pair of carburetors 32 .Iadd.having rearwardly facing air inlet openings, as clearly seen in FIGS. 2 and 3, .Iaddend.that deliver a fuel/air mixture to the crankcase of the engine 27 by means of an induction manifold 33. In the illustrated embodiment, the engine 27 is of the two-cycle type and this is why the carburetors 32 discharge their fuel/air mixture into the crankcase of the engine 27. It is to be understood, however, that this invention may also be practiced with four-cycle engines having carburetors that are positioned to the rear of the cylinder block and beneath in substantial part the upper portions of the main frame members, for a reason which will become apparent. The carburetors 32 are provided with an air inlet device in the form of a combined air cleaner and air silencer 34 which is also positioned at least in part below the main frame members 14 and is positioned rearwardly of the carburetors 32.
The engine 27 includes a combined crankcase and transmission assembly that drives an output shaft 35 which, in turn, drives the rear wheel 24 by means of a chain drive 36.
A fuel tank, indicated generally by the reference numeral 37, is supported on the upper sides of the main frame members 14 and rearwardly of the head pipe 13. A seat 38 is carried by the seat rails 18 and seat pillar rails 19 rearwardly of the fuel tank 37.
The engine 27 is at least in part water cooled and, for this purpose, a cooling radiator 39 is supported by the down tubes 16 forwardly of the engine 28 and beneath the main frame members 14.
It should be readily apparent from the foregoing description that the overall configuration of the motorcycle places the carburetors 32 and their air inlet devices 34 in a well protected position. For the same reason, however, conventional motorcycles having this same placement have difficulty in obtaining an adequate source of cool air to the air inlet devices 34. However, in accordance with the invention, the construction of the motorcycle 11 is such that a cooling air inlet channel, indicated generally by the reference numeral 41, is provided for delivering a source of plentiful ram air to the engine induction system. The air channel 41 is defined by the inner side surfaces of the main frame members 14 and a lower surface 42 of the fuel tank 37. As may be seen in FIG. 2, the inlet to this cooling channel is positioned at least in part above the radiator 39 and hence it is insured that there will be a good supply of air for the engine induction system. In addition, this channel is configured in such a way as to create a ram effect for the inlet air since it tapers downwardly and rearwardly and is disposed with its open mouth forwardly of the motorcycle so that ram air will be well delivered to the engine induction system. Thus, even though the motorcycle 11 has a very compact configuration, there will be an adequate supply of cooling air for the engine and also for the engine induction system.
.Iadd.As may be seen from FIG. 2, a portion of the air flowing through the air inlet channel 41 passes through the radiator 39 while another portion, as already noted, passes over the radiator. The air flowing through the radiator is indicated in this figure by solid line arrows while the air flowing around the radiator is noted by broken line arrows. This air is supplied to the engine induction system..Iaddend.
The frame assembly 12 may be formed from any suitable material but preferably is formed from either aluminum castings and stampings or from steel.
It is to be understood that the foregoing description is that of a preferred embodiment of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, as defined by the appended claims.

Claims (6)

I claim:
1. A motorcycle having a frame comprised of a head pipe, a pair of box section main frame members having inwardly facing side surfaces depending from respective upper surfaces, said main frame members being fixed at their front ends to said head pipe and extending rearwardly and downwardly therefrom, said inwardly facing side surfaces and said main frame members diverging from each other in the vicinity of their connection to said head pipe, a front wheel dirigibly supported by said head pipe, an engine carried by said frame and positioned at least in substantial part below said main frame members, said engine having a charge forming system including a rearwardly extending air inlet positioned at least in substantial part below said upper surfaces of said main frame members, a rear wheel suspended from said main frame member at the rear end thereof, and a fuel tank supported upon said main frame members and having a lower surface extending above said engine and said air inlet, said lower surface of said fuel tank and said inwardly facing side surfaces of said main frame members defining a forwardly opening air inlet channel for delivering ram air to said air inlet.
2. A motorcycle as set forth in claim 1 wherein the air inlet channel is inclined downwardly and rearwardly from an upwardly positioned opening to a rearwardly positioned outlet in registry with the air inlet.
3. A motorcycle as set forth in claim 1 wherein the air inlet includes a carburetor.
4. A motorcycle as set forth in claim 3 wherein the air inlet includes an air silencer for delivering air to the carburetor.
5. A motorcycle as set forth in claim 4 wherein the air inlet channel is inclined downwardly and rearwardly from an upwardly positioned opening to a rearwardly positioned outlet in registry with the air inlet. .Iadd.
6. A motorcycle as set forth in claim 1 wherein the forward opening of the air inlet channel is defined by said facing side surfaces and said fuel tank lower surface..Iaddend..Iadd.7. A motorcycle as set forth in claim 1 wherein the engine is water cooled and further including a radiator positioned forwardly of the engine and below the facing side surfaces of the frame members and wherein a portion of the air directed to the air inlet passes through the radiator..Iaddend..Iadd.8. A motorcycle as set forth in claim 7 wherein the forward opening of the air inlet channel is defined by said facing side surfaces and said fuel tank lower surface..Iaddend.
US07/861,555 1985-03-04 1992-04-01 Engine cooling system for motorcycle Expired - Lifetime USRE35675E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/861,555 USRE35675E (en) 1985-03-04 1992-04-01 Engine cooling system for motorcycle

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP60042049A JPH0645353B2 (en) 1985-03-04 1985-03-04 Body structure of riding type vehicle
JP60-42049 1985-03-04
US06/834,209 US4723617A (en) 1985-03-04 1986-02-27 Engine cooling system for motorcycle
US07/861,555 USRE35675E (en) 1985-03-04 1992-04-01 Engine cooling system for motorcycle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06/834,209 Reissue US4723617A (en) 1985-03-04 1986-02-27 Engine cooling system for motorcycle

Publications (1)

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USRE35675E true USRE35675E (en) 1997-12-02

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US06/834,209 Expired - Lifetime US4723617A (en) 1985-03-04 1986-02-27 Engine cooling system for motorcycle
US07/861,555 Expired - Lifetime USRE35675E (en) 1985-03-04 1992-04-01 Engine cooling system for motorcycle

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US06/834,209 Expired - Lifetime US4723617A (en) 1985-03-04 1986-02-27 Engine cooling system for motorcycle

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US (2) US4723617A (en)
JP (1) JPH0645353B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6454040B1 (en) * 1998-04-13 2002-09-24 Yamaha Hatsudoki Kabushiki Kaisha Transmission and cooling arrangement for all terrain vehicle
US20040040958A1 (en) * 2002-09-04 2004-03-04 Suzuki Kabushiki Kaisha Fuel tank provided with air guide structure of straddle-type vehicle
FR2905665A1 (en) * 2007-03-28 2008-03-14 Penel Rech Et Dev Sarl P R D S Self-supporting shell type chassis for air intake chamber of carburetor in motorcycle, has cavity with opening allowing assembly of sleeve coupled to air inlet, where inlet is located behind front plate and constituted of lateral grids
US20090008181A1 (en) * 2007-07-02 2009-01-08 Paul Pedersen Motorcycle airbox with a helmholtz resonator

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295799B1 (en) * 1987-06-19 1993-05-12 Honda Giken Kogyo Kabushiki Kaisha Motorcycle frame
JP3034535B2 (en) * 1989-07-25 2000-04-17 本田技研工業株式会社 Muffler device for motorcycle
JP2812538B2 (en) * 1990-06-09 1998-10-22 ヤマハ発動機株式会社 Motorcycle engine intake system
JP2557010B2 (en) * 1992-03-02 1996-11-27 ヤマハ発動機株式会社 Body structure of a riding type vehicle
JP3705044B2 (en) * 1999-10-19 2005-10-12 スズキ株式会社 Scooter type vehicle
JP4627370B2 (en) * 2001-01-10 2011-02-09 本田技研工業株式会社 Body frame structure for motorcycles
JP2003054470A (en) 2001-08-10 2003-02-26 Yamaha Motor Co Ltd Cooling air introduction structure for small vehicle
JP4894401B2 (en) * 2006-08-09 2012-03-14 スズキ株式会社 Saddle-type rough terrain vehicle

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Publication number Priority date Publication date Assignee Title
US31995A (en) * 1861-04-09 Improved toe-calkin for horseshoes
GB138714A (en) * 1919-02-24 1920-02-19 Benjamin Graham Wood Improvements in motor cycles
JPS5989226A (en) * 1982-11-10 1984-05-23 Yamaha Motor Co Ltd Air cleaner for motorcycle
US4531606A (en) * 1982-02-06 1985-07-30 Yamaha Hatsudoki Kabushiki Kaisha Air cleaner for three wheel vehicle
USRE31995E (en) 1979-07-12 1985-10-01 Automation Industries, Inc. Enhanced detent guide track with dog-leg
US4585086A (en) * 1983-08-18 1986-04-29 Honda Giken Kogyo Kabushiki Kaisha Motor vehicle frame material and frame construction using the same
US4597466A (en) * 1984-05-28 1986-07-01 Honda Giken Kogyo Kabushiki Kaisha Air intake apparatus for vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US31995A (en) * 1861-04-09 Improved toe-calkin for horseshoes
GB138714A (en) * 1919-02-24 1920-02-19 Benjamin Graham Wood Improvements in motor cycles
USRE31995E (en) 1979-07-12 1985-10-01 Automation Industries, Inc. Enhanced detent guide track with dog-leg
US4531606A (en) * 1982-02-06 1985-07-30 Yamaha Hatsudoki Kabushiki Kaisha Air cleaner for three wheel vehicle
JPS5989226A (en) * 1982-11-10 1984-05-23 Yamaha Motor Co Ltd Air cleaner for motorcycle
US4585086A (en) * 1983-08-18 1986-04-29 Honda Giken Kogyo Kabushiki Kaisha Motor vehicle frame material and frame construction using the same
US4597466A (en) * 1984-05-28 1986-07-01 Honda Giken Kogyo Kabushiki Kaisha Air intake apparatus for vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6454040B1 (en) * 1998-04-13 2002-09-24 Yamaha Hatsudoki Kabushiki Kaisha Transmission and cooling arrangement for all terrain vehicle
US20040040958A1 (en) * 2002-09-04 2004-03-04 Suzuki Kabushiki Kaisha Fuel tank provided with air guide structure of straddle-type vehicle
US7441619B2 (en) * 2002-09-04 2008-10-28 Suzuki Kabushiki Kaisha Fuel tank provided with air guide structure of straddle-type vehicle
FR2905665A1 (en) * 2007-03-28 2008-03-14 Penel Rech Et Dev Sarl P R D S Self-supporting shell type chassis for air intake chamber of carburetor in motorcycle, has cavity with opening allowing assembly of sleeve coupled to air inlet, where inlet is located behind front plate and constituted of lateral grids
US20090008181A1 (en) * 2007-07-02 2009-01-08 Paul Pedersen Motorcycle airbox with a helmholtz resonator

Also Published As

Publication number Publication date
JPH0645353B2 (en) 1994-06-15
JPS61202983A (en) 1986-09-08
US4723617A (en) 1988-02-09

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