CN1032708C - Structure of shroud opening for the intake of cooling air in air-cooling type internal combustion engine - Google Patents
Structure of shroud opening for the intake of cooling air in air-cooling type internal combustion engine Download PDFInfo
- Publication number
- CN1032708C CN1032708C CN93115691A CN93115691A CN1032708C CN 1032708 C CN1032708 C CN 1032708C CN 93115691 A CN93115691 A CN 93115691A CN 93115691 A CN93115691 A CN 93115691A CN 1032708 C CN1032708 C CN 1032708C
- Authority
- CN
- China
- Prior art keywords
- heat sink
- cover
- outside
- cooling
- cooling air
- 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
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 47
- 238000002485 combustion reaction Methods 0.000 title abstract 2
- 239000002360 explosive Substances 0.000 claims description 13
- 230000017525 heat dissipation Effects 0.000 claims 1
- 229920003002 synthetic resin Polymers 0.000 abstract description 2
- 239000000057 synthetic resin Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000002955 isolation Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 3
- 241000628997 Flos Species 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
Images
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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/12—Filtering, cooling, or silencing cooling-air
-
- 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
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
- F02B77/13—Acoustic insulation
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/28—Cylinder heads having cooling means for air cooling
- F02F1/30—Finned cylinder heads
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
A synthetic resin made shroud 20 for covering an internal combustion engine 3 and cooling fans 19 is formed of a cylinder side shroud 21 for covering the cooling fans 19 and a cylinder 14, a head side shroud 22 for covering a cylinder head 15, and a shroud outside plate 23 for covering the outside of the cylinder side shroud 21. A cylindrical opening 25 is formed at the cylinder side shroud 21, and an inner louver 26 is formed at the cylindrical opening 25. The inner louver 26 is formed by disposing wide fins 27 inclining them from the rear to the front toward the outside from the inside at large spaces apart over the longitudinal direction. A cylindrical opening 28 protruding outward is formed also at the shroud outside plate 23, and an outer louver 29 is formed at the cylindrical opening 28. The outer louver 29 is formed by disposing relatively narrow fins 30 inclining them from above to below toward the outside from the inside at narrow spaces apart over the vertical direction.
Description
The present invention relates to the structure that a kind of in the air-cooled explosive motor is used to introduce the cover opening of cooling air, the noise isolation performance of its cover hatch frame is superior.
A kind of air-cooled explosive motor that is used for the small capacity double wheeled motorcycle, wherein, the radiator portion of motor covers with cover, by constituting the rotation of the cooling fan of one with bent axle, the cooling air intake of cooling air on cover is imported in this cover, is used for cooling off this radiator portion; Heat sink is configured in the cooling air intake of cover, it comprises a plurality of radiating fin, this radiating fin is arranged vertically and inclination from top to bottom on the direction from the inboard to the outside with predetermined spaced and parallel ground, as illustrated among the Japanese Utility Model No.32903/88, so that realize the noise isolation and prevent that outside rainwater from entering in this cover.
The cover that top model utility is mentioned in announcing and describing, it is whole that interior Heat sink becomes with cover, and a dismountable separate piece has been installed in the outside of interior Heat sink, its radiating fin of outer Heat sink is arranged on the extension plane of the radiating fin of interior Heat sink, so that strengthen the radiating fin width under low cost.Yet though the wider width of radiating fin can prevent more reliably that rainwater from entering in the cover, the noise that is produced by explosive motor and cooling fan still leaks into the outside along each radiating fin, so just can not obtain satisfied noise isolation effect.
The objective of the invention is to propose a kind of improved cover hatch frame, this cover opening is used to introduce cooling air in air-cooled explosive motor, and it does not have inconvenience above-mentioned.In air-cooled explosive motor, the radiator portion of motor covers with cover and the rotation by cooling fan, the cooling air intake on cover, and cooling air is imported in the cover, is used for the radiator portion of cooled engine.The invention is characterized in the outer Heat sink and each all inclined in such a way setting of interior Heat sink at cooling air intake place, the true dip direction of promptly outer Heat sink and interior Heat sink has nothing in common with each other.
In the present invention, because the true dip direction of outer Heat sink and interior Heat sink has nothing in common with each other, the most of noise sound wave that is produced by explosive motor and cooling fan is interdicted by interior Heat sink, and is interdicted by the outer Heat sink different with interior Heat sink true dip direction by the noise sound wave between each radiating fin of interior Heat sink.So just can obtain satisfied noise isolation effect.
In dilly, used air-cooled explosive motor of the present invention, outside with respect to car body, its (by cover of the present invention) is in the state that laterally exposes, if outer Heat sink tilts on the direction from the inboard to the outside from top to bottom, and interior Heat sink on the direction from the inboard to the outside by after turn forward, then not only can utilize outer Heat sink to prevent that rainwater from falling along vehicle outside enters in the cover, but also can utilize interior Heat sink, through the cooling air intake, the wind that flows after by forward direction along outside vehicle is introduced in the cover, therefore cooling effect is further improved.
Biao Shi embodiments of the invention will be described below in the accompanying drawings.
Wherein:
Fig. 1 is the right side view at the rear portion of small capacity double wheeled motorcycle, and this motorcycle has by cover hatch frame of the present invention, and this cover opening is used to introduce cooling air in air-cooled explosive motor;
Fig. 2 is the vertical sectional view of dissecing along the II-II line among Fig. 1;
Fig. 3 is the enlarged side view of the major component of the cover outside plate shown in Fig. 1;
Fig. 4 is the enlarged side view of cylinder side cover shown in Figure 1; And
Fig. 5 is along the V-V line side cross sectional view among Fig. 4.
A kind of suspension type power plant 2 that are installed on the small capacity double wheeled motorcycle 1 comprise the V-shape belt formula stepless speed changing mechanism 4 that an air-cooled explosive motor 3 (its slightly at a slant) and extends after the side direction of motor 3 bottoms down, and this motor 3 is connected into one with this gear 4.Trailing wheel 5 integrally is installed on the output shaft (not shown) of V-shape belt formula stepless speed changing mechanism 4, and the suspension rod part 6 that is positioned at suspension type power plant 2 front portions connects with support 8 vertically, swingably, and support 8 stretches out from the car body of small capacity double wheeled motorcycle 1 backward.
Bent axle 10 is rotatably supported in the crankcase 9 of motor 3, and an active adjustable straps wheel 11 of stepless speed changing mechanism 4 is contained in the high order end of bent axle 10.V-shape belt 13 folders are on active adjustable straps wheel 11, and a passive adjustable straps wheel (not shown) is contained on the axle journal of gearbox 12 afterbodys.Along with the increase of bent axle 10 revolutions, the gear graduation of stepless speed changing mechanism 4 reduces than in stepless mode, and the power of motor 3 passes to trailing wheel 5 by gear 4.
In addition, the cylinder head 15 that is positioned at the cylinder 14 of crankcase 9 tops and is positioned at cylinder upper is made into many radiating fin 16 with predetermined interval.The rotor 18 and the bent axle of generator 17 combine as a whole, and are positioned at the low order end of bent axle 10, and centrifugal cooling fan 19 is made of one with rotor 18.
Air-cooled explosive motor 3 and cooling fan 19 all cover with the cover 20 that synthetic resin is done.This cover 20 comprises the overhead guard 22 that a cylinder side cover 21, that can cover the cylinder 14 of cooling fan 19 and motor 3 covers cylinder head 15, and a cover outside plate 23 that covers cylinder side cover 21 outsides.This cylinder side cover 21 and overhead guard 22 are contained in respectively on crankcase 9 and the cylinder 14, can unload with construction bolt 24.
One cylinder open 25 is arranged on cylinder side cover 21, and opening 25 is concentric with cooling fan 19, and once in Heat sink (gillis) 26 be arranged in cylindrical mouthfuls 25.Should in Heat sink 26 comprise a plurality of wide radiating fin 27, radiating fin 27 on the direction from the inboard to the outside by back top rake and longitudinally to distribute than wide interval.Also have cylinder open 28 on cover 23, outwards protrude along side direction, closely contact with cylindrical mouthful 25 outer round surface of cylinder side cover 21, in addition, an outer Heat sink 29 is arranged in cylindrical mouthful 28.Should comprise a plurality of narrower narrow radiating fin 30 by outer Heat sink 29, on the direction from the inboard to the outside, tilt from top to bottom, and with narrow interval vertical distribution.
As shown in Figure 4, in cylinder side cover 21, be provided with many holes 36 at peripheral part of the cylindrical of cylinder open 25.Noise absorbing material 33 demonstrates in cooling air channels 38 by hole 36.
The outer surface of cylinder side cover 21, the steeple shape that constructs a plurality of sides on three positions is in conjunction with lug 37c, 37d and 37e, it is several that every kind of lug all has, and between each hole 36 around the cylinder open 25, noise absorbing material just fixes in conjunction with lug 37 with those.
Because described embodiment has above-mentioned structure, when air-cooled explosive motor 3 is started working and cooling fan 19 when having rotated, outside air on suspension type power plant 2 right sides, from the cylinder open 28 of cover outside plate 23 in the cylinder open 25 of cylinder side cover 21 is imported into cooling air channels 38 cover 20, so when with carry out heat exchange during each the diffusing radiating fin 16 of cylinder 14 and cylinder head 15 contact after, cooling air is discharged into the outside of cover 20 through cooling air emission mouth 35.Like this, cylinder 14 and cylinder head 15 just are cooled to satisfied degree.
Even because of engine operation is made a noise by motor and cooling fan, the cover 20 that the noise in the cooling air channels 38 also can be covered motor 3 and fan 19 interdicts, and is absorbed by the noise absorbing material of demonstration in passage 38 by hole 36.Therefore, the noise level of power plant 2 outsides reduces significantly.
In addition, in cylinder open 25 and 28, because each radiating fin 27 of interior Heat sink 26 is different with each radiating fin 30 true dip direction each other of outer Heat sink 29, the noise sound wave that passes through between each radiating fin 27 by interior Heat sink 26 has been changed their direction of propagation by the effect of each radiating fin 30 of outer Heat sink 29, so the noise isolation effect is improved, and can further lower the noise level that produces by motor 3 and cooling fan 19.
Moreover, because each radiating fin 30 of outer Heat sink 29 is to tilt from top to bottom on the direction from the inboard to the outside, can makes rainwater drop onto the outside of vehicle from the lower edge of each radiating fin 30, thereby can prevent that rainwater from entering in the cooling air channels 38 from last whereabouts.
In addition, because each radiating fin 27 of interior Heat sink 26 on the direction from the inboard to the outside from after turn forward, flow to the rear also by the wind between outer Heat sink 29 each radiating fin 30 from the place ahead on suspension type power plant 2 right sides, will inevitably be imported in the cooling air channels 38.Like this, just can increase the flow of cooling air, thereby further improve cooling effect.
Claims (2)
1. be used to introduce the structure of the cover opening of cooling air with a kind of in the air-cooled explosive motor at vehicle, wherein the radiator portion of motor covered by cover and, rotation by cooling fan, cooling air is imported in the cover through a cooling air intake that is arranged on the cover, with the cooling heat dissipation part; It is characterized in that this structure comprises outer Heat sink and interior Heat sink, they all make heeling condition in such a way in described cooling air intake, the true dip direction that is described outer Heat sink and described interior Heat sink is inequality, wherein interior Heat sink extends along the vertical direction, keep the interval of fore-and-aft direction, and the width that makes this interval wide than outer Heat sink.
2. according to the structure of a kind of cover opening of claim 1, wherein said outer Heat sink tilts on the direction in the outside from top to bottom in the inboard, interior Heat sink on the direction from the inboard to the outside by after turn forward.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04358734A JP3140231B2 (en) | 1992-12-28 | 1992-12-28 | Shroud opening structure for cooling air intake of air-cooled internal combustion engine for vehicles |
| JP358734/92 | 1992-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1096849A CN1096849A (en) | 1994-12-28 |
| CN1032708C true CN1032708C (en) | 1996-09-04 |
Family
ID=18460842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93115691A Expired - Lifetime CN1032708C (en) | 1992-12-28 | 1993-12-28 | Structure of shroud opening for the intake of cooling air in air-cooling type internal combustion engine |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0604937B1 (en) |
| JP (1) | JP3140231B2 (en) |
| KR (1) | KR960012131B1 (en) |
| CN (1) | CN1032708C (en) |
| ES (1) | ES2101209T3 (en) |
| TW (1) | TW249830B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348846C (en) * | 2005-09-30 | 2007-11-14 | 无锡开普动力有限公司 | Air-cooled diesel engine |
| CN101233306B (en) * | 2005-06-23 | 2011-06-01 | 本田技研工业株式会社 | Air-cooled engine |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4280358B2 (en) * | 1999-05-31 | 2009-06-17 | 本田技研工業株式会社 | Cover with louver, mold apparatus for molding cover, and engine |
| JP2004116375A (en) * | 2002-09-25 | 2004-04-15 | Yamaha Motor Co Ltd | Sound insulation structure of forced air cooling engine for motorcycle |
| JP4407925B2 (en) * | 2004-07-14 | 2010-02-03 | 本田技研工業株式会社 | Cooling device with cooling fan |
| JP2006290295A (en) * | 2005-04-14 | 2006-10-26 | Yamaha Motor Co Ltd | Saddle riding type vehicle |
| WO2015163476A1 (en) * | 2014-04-25 | 2015-10-29 | ヤマハモーターパワープロダクツ株式会社 | Engine |
| JP6038844B2 (en) * | 2014-06-26 | 2016-12-07 | 本田技研工業株式会社 | Cooling device for internal combustion engine for saddle riding type vehicle |
| CN104843104B (en) * | 2015-05-15 | 2019-01-25 | 张素宝 | A kind of railway T-shaped beam special transportation device |
| MX2018001383A (en) * | 2017-02-01 | 2018-11-29 | Tvs Motor Co Ltd | Cooling system for internal combusion engine. |
| CN109973196B (en) * | 2017-12-28 | 2022-12-23 | Tvs电机股份有限公司 | Cooling system for internal combustion engine |
| CN112196654A (en) * | 2020-10-13 | 2021-01-08 | 江门市大长江集团有限公司 | Auxiliary cooling structure, engine and motorcycle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1551362A (en) * | 1975-04-28 | 1979-08-30 | Komatsu Mfg Co Ltd | Radiator assembly |
| DE3011673C2 (en) * | 1980-03-26 | 1982-06-09 | Deere & Co., Moline, Ill., US, Niederlassung Deere & Co. European Office, 6800 Mannheim | Agricultural or construction machinery |
| JPS5945268U (en) * | 1982-09-20 | 1984-03-26 | 本田技研工業株式会社 | Ventilation equipment for motorcycles, etc. |
| JPS61258916A (en) * | 1985-05-10 | 1986-11-17 | Kawasaki Heavy Ind Ltd | Forcedly air-cooled engine |
-
1992
- 1992-12-28 JP JP04358734A patent/JP3140231B2/en not_active Expired - Fee Related
-
1993
- 1993-12-21 TW TW082110855A patent/TW249830B/zh not_active IP Right Cessation
- 1993-12-27 EP EP93120921A patent/EP0604937B1/en not_active Expired - Lifetime
- 1993-12-27 ES ES93120921T patent/ES2101209T3/en not_active Expired - Lifetime
- 1993-12-27 KR KR1019930030039A patent/KR960012131B1/en not_active IP Right Cessation
- 1993-12-28 CN CN93115691A patent/CN1032708C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233306B (en) * | 2005-06-23 | 2011-06-01 | 本田技研工业株式会社 | Air-cooled engine |
| CN100348846C (en) * | 2005-09-30 | 2007-11-14 | 无锡开普动力有限公司 | Air-cooled diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0604937B1 (en) | 1997-04-09 |
| CN1096849A (en) | 1994-12-28 |
| ES2101209T3 (en) | 1997-07-01 |
| JP3140231B2 (en) | 2001-03-05 |
| TW249830B (en) | 1995-06-21 |
| EP0604937A1 (en) | 1994-07-06 |
| JPH06200757A (en) | 1994-07-19 |
| KR940015169A (en) | 1994-07-20 |
| KR960012131B1 (en) | 1996-09-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| C10 | Entry into substantive examination | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |