GB2114945A - Motor scooters and like vehicles - Google Patents

Motor scooters and like vehicles Download PDF

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Publication number
GB2114945A
GB2114945A GB08303993A GB8303993A GB2114945A GB 2114945 A GB2114945 A GB 2114945A GB 08303993 A GB08303993 A GB 08303993A GB 8303993 A GB8303993 A GB 8303993A GB 2114945 A GB2114945 A GB 2114945A
Authority
GB
United Kingdom
Prior art keywords
engine
fan
vehicle
cover
engine compartment
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
GB08303993A
Other versions
GB2114945B (en
GB8303993D0 (en
Inventor
Yasuo Ikenoya
Takeo Igari
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.)
Honda Motor Co Ltd
Original Assignee
Honda 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of GB8303993D0 publication Critical patent/GB8303993D0/en
Publication of GB2114945A publication Critical patent/GB2114945A/en
Application granted granted Critical
Publication of GB2114945B publication Critical patent/GB2114945B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J17/00—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for
    • B62J17/10—Ventilation or air guiding devices forming part of fairings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J50/00—Arrangements specially adapted for use on cycles not provided for in main groups B62J1/00 - B62J45/00
    • B62J50/30—Means for ventilation within devices provided on the cycle, e.g. ventilation means in a battery container
    • 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
    • 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
    • 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
    • B62K2202/00—Motorised scooters
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Landscapes

  • 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)
  • General Details Of Gearings (AREA)

Abstract

A system for cooling the engine compartment of a motor scooter or the like, having a body cover 18 defining the engine compartment, comprises the engine driven fan 38, a fan cover 40 extending between the fan and the engine head 30, and a nozzle 46 diverting a portion of the flow induced by the fan into the upper portion of the engine compartment. The cooling airflow thus cools both the engine head 30 and the upper portion of the engine compartment. <IMAGE>

Description

SPECIFICATION Motor scooters and like vehicles The present invention relates to engine compartment cooling in motor scooters and like vehicles.
Motor scooters and like motorised cycles often include a cover which forms part of the vehicle body and surrounds the engine. Such a body cover makes the vehicle more attractive and appealing for a variety of reasons to many people who are not interested in a true motorcycle. However, such body covers may have a detrimental effect on cooling airflow, both to the engine and to other components. As the engine heats up, the warm air around the engine may simply rise within the engine compartment and become relatively stagnant around a variety of components. With the use of polymeric materials to reduce weight and cost with an increase in efficiency, additional detrimental effects may occur through the deterioration of such component materials.
According to the present invention there is provided a motor scooter or like vehicle having an air-cooled engine in an engine compartment, a fan mounted on the engine and driven thereby, a fan cover arranged to direct cooling air from the fan to the engine head, and a cooling air passage extending out of said fan cover to the upper portion of the engine compartment above the engine.
With such an arrangement a portion of the forced cooling air from the engine fan, rather than being heated by the engine head, is directed into the upper portion of the engine compartment. The air thus directed to the engine compartment forms only a portion of the overall cooling airflow generated by the engine fan.
The diversion of a portion of the cooling air from the engine into the engine compartment prevents stagnation of the air in the compartment.
Thus, components and heat sensitive materials may be maintained at a cooler temperature.
Furthermore, such a system avoids the need for additional vents which might otherwise detract from the appearance of the vehicle, might reduce the effectiveness of the body cover for noise reduction and might increase the amount of heat conducted to the rider, particularly during idling conditions. At the same time, only one fan and forced air system need be provided.
An embodiment of the invention will now be described by way of example and with reference to the accompanying drawings, in which: Figure 1 is a side view of a vehicle according to the present invention, illustrated schematically; Figure 2 is a detailed cross-sectional elevation taken along line 2-2 of Figure 1; and Figure 3 is a transverse cross-sectional elevation illustrating the relevant parts of the vehicle in greater detail.
Referring to the drawings, a motor scooter 10 is illustrated. The motor scooter 10 is only one example of a number of small vehicle types in which the engine is located in an engine compartment defined by a body cover and to which the present invention is applicable. The motor scooter 10 includes wheels 12 and 14, a body 16, a body cover 18 about the rear portion of the motor scooter 10, and a seat 20. A silencer 22, an oil tank 24 and a petrol tank 26 are within the body cover 18.
Also located within the body cover 1 8 is an engine 28. The engine 28 is air-cooled and includes a cylinder head 30 and an exhaust pipe 32 associated with the silencer 22. The engine 28 further includes an extension 34 of its crankshaft which drives auxiliary equipment such as an AC generator 36.
The body cover 18 includes a vent 37 for the exhausting of the engine compartment. The vent 37 is displaced from the seat 20 so that hot air and fumes will not reach the driver. Also, the vent is positioned at the back of the vehicle to enhance forced exhaust when the vehicle is moving. The underside of the body cover 1 8 is also open for venting.
Secured on the crankshaft extension 34 outwardly of the AC generator 36 is a fan 38. The fan 38 is positioned relative to the body cover 1 8 such that it may receive cool air from the outside.
The fan is held on by conventional means and is operative when the engine is on, the fan running at the engine speed.
Surrounding the fan 38 is a fan cover 40. The fan cover 40 has an inlet 42 which louvres 44 facing toward the side of the motor scooter 10.
This placement of the inlet 42 and the louvres helps prevent water, mud and the like from entering into the cooling system. The cover 40 is spaced from the body cover 18 at 45 to minimise flow resistance. The cover 40 extends about the fan 38 for collection of the air flow from the fan 38 for distribution upwardly and toward the engine head 30. The cover 40 is curved toward the head and opens immediately adjacent the head for direct cooling. Arrows in Figure 3 depict the flow both into the fan 38 and upwardly toward the head 30.
The engine fan 38 thus forces a flow of cooling air past the engine head 30. The flow from the engine head 30 is then released from the engine 28 into the engine compartment within the body cover 18. This flow of engine heated air and the natural convection of heat from other portions of the engine may result in the collection of stagnant hot air in the upper portions of the engine compartment in the absence of further provisions now to be described.
A nozzle 46 is positioned on the fan cover 40 so as to extend through the fan cover 40. The nozzle 46 also extends to the upper portion of the engine compartment defined by the body cover 1 8. The nozzle 46 is of sufficiently restricted size so as to direct only a smali portion of the cooling air flow away from the engine 28 and into the engine compartment. Thus, this engine compartment cooling does not detract from the necessary cooling of the engine head 30. As can be seen in Figure 1 by the arrows, the nozzle direction allows forced cooling air to purge the upper portion of the engine compartment.
Thus, a cooling system is disclosed for overcoming certain difficulties associated with a body cover surrounding an engine on a motor scooter or like motorised cycle. While embodiments and applications of this invention have been shown and described, it will be apparent to those skilled in the art that many more modifications are possible without departing from the scope of the appended claims.

Claims (6)

1. A motor scooter or like vehicle having an aircooled engine in an engine compartment, a fan mounted on the engine and driven thereby, a fan cover arranged to direct cooling air from the fan to the engine head, and a cooling air passage extending out of said fan cover to the upper portion of the engine compartment above the engine.
2. A vehicle as claimed in claim 1, wherein the engine compartment is defined by a cover forming part of the vehicle body, said fan cover being within said body cover.
3. A vehicle as claimed in claim 1 or 2, wherein said cooling air passage is adapted to receive only a restricted proportion of the air flow in said fan cover.
4. A vehicle as claimed in any of claims 1 to 3, wherein said cooling air passage is defined by a nozzle secured to and extending through said fan cover at a location between the fan and the engine head.
5. A vehicle as claimed in any of the preceding claims, wherein the said fan is fixed to a crankshaft extension of the engine for rotation therewith.
6. A vehicle as claimed in claim 1, substantially as hereinbefore described with reference to the accompanying drawings.
GB08303993A 1982-02-15 1983-02-14 Motor scooters and like vehicles Expired GB2114945B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57022453A JPS58139819A (en) 1982-02-15 1982-02-15 Cooler inside of enclosure for car body

Publications (3)

Publication Number Publication Date
GB8303993D0 GB8303993D0 (en) 1983-03-16
GB2114945A true GB2114945A (en) 1983-09-01
GB2114945B GB2114945B (en) 1985-02-27

Family

ID=12083127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08303993A Expired GB2114945B (en) 1982-02-15 1983-02-14 Motor scooters and like vehicles

Country Status (3)

Country Link
JP (1) JPS58139819A (en)
FR (1) FR2521498B1 (en)
GB (1) GB2114945B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532892A1 (en) * 1982-08-10 1984-03-16 Honda Motor Co Ltd MOTORCYCLE WITH WATER COOLING MOTOR
FR2575990A1 (en) * 1985-01-17 1986-07-18 Honda Motor Co Ltd SCOOTER BODY
US4712629A (en) * 1985-09-04 1987-12-15 Suzuki Motor Company Limited Engine and drive belt cooling system for an all terrain vehicle
EP0289912A2 (en) * 1987-05-02 1988-11-09 Kubota Limited Partially liquid-cooling type forcedly air-cooling system for internal combustion engine
EP0756110A2 (en) * 1995-06-29 1997-01-29 Yamaha Hatsudoki Kabushiki Kaisha Continuously variable transmission system
EP1790559A1 (en) * 2005-11-25 2007-05-30 Yamaha Hatsudoki Kabushiki Kaisha Straddle-type vehicle
US7882911B2 (en) * 2007-08-20 2011-02-08 Yamaha Hatsudoki Kabushiki Kaisha Straddle type vehicle including air exhaust duct for continuously variable transmission

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4829493B2 (en) * 2004-11-05 2011-12-07 株式会社永木精機 Stringer
JP2024041147A (en) 2022-09-14 2024-03-27 本田技研工業株式会社 Straddled type vehicle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB800042A (en) * 1955-02-22 1958-08-20 Fritz Schreitl Improvements in or relating to motor scooters
DE1107539B (en) * 1955-12-01 1961-05-25 Fichtel & Sachs Ag Cooling air duct for blown-cooled vehicle engines, especially for scooters
US4372415A (en) * 1979-04-10 1983-02-08 Honda Giken Kogyo Kabushiki Kaisha Vehicle drive unit
JPS6245053Y2 (en) * 1979-04-19 1987-12-01

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532892A1 (en) * 1982-08-10 1984-03-16 Honda Motor Co Ltd MOTORCYCLE WITH WATER COOLING MOTOR
FR2575990A1 (en) * 1985-01-17 1986-07-18 Honda Motor Co Ltd SCOOTER BODY
US4712629A (en) * 1985-09-04 1987-12-15 Suzuki Motor Company Limited Engine and drive belt cooling system for an all terrain vehicle
AU582677B2 (en) * 1985-09-04 1989-04-06 Suzuki Motor Corporation All terrain vehicle
EP0289912A2 (en) * 1987-05-02 1988-11-09 Kubota Limited Partially liquid-cooling type forcedly air-cooling system for internal combustion engine
EP0289912A3 (en) * 1987-05-02 1989-06-14 Kubota Limited Partially liquid-cooling type forcedly air-cooling system for internal combustion engine
EP0756110A2 (en) * 1995-06-29 1997-01-29 Yamaha Hatsudoki Kabushiki Kaisha Continuously variable transmission system
EP0756110A3 (en) * 1995-06-29 1998-03-25 Yamaha Hatsudoki Kabushiki Kaisha Continuously variable transmission system
CN1113771C (en) * 1995-06-29 2003-07-09 雅马哈发动机株式会社 Device for cooling power equipment
EP1790559A1 (en) * 2005-11-25 2007-05-30 Yamaha Hatsudoki Kabushiki Kaisha Straddle-type vehicle
US7484767B2 (en) 2005-11-25 2009-02-03 Yamaha Hatsudoki Kabushiki Kaisha Motorcycle
US7882911B2 (en) * 2007-08-20 2011-02-08 Yamaha Hatsudoki Kabushiki Kaisha Straddle type vehicle including air exhaust duct for continuously variable transmission

Also Published As

Publication number Publication date
FR2521498B1 (en) 1987-10-09
JPH0121036B2 (en) 1989-04-19
GB2114945B (en) 1985-02-27
FR2521498A1 (en) 1983-08-19
GB8303993D0 (en) 1983-03-16
JPS58139819A (en) 1983-08-19

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PCNP Patent ceased through non-payment of renewal fee