CN1185411C - IC engine of motorcycle - Google Patents
IC engine of motorcycle Download PDFInfo
- Publication number
- CN1185411C CN1185411C CNB021459932A CN02145993A CN1185411C CN 1185411 C CN1185411 C CN 1185411C CN B021459932 A CNB021459932 A CN B021459932A CN 02145993 A CN02145993 A CN 02145993A CN 1185411 C CN1185411 C CN 1185411C
- Authority
- CN
- China
- Prior art keywords
- cylinder
- front frame
- combustion engine
- cooling fin
- side wall
- 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 - Fee Related
Links
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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
- F01P1/00—Air cooling
- F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
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- 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
-
- 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
- F01P2050/00—Applications
- F01P2050/16—Motor-cycles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
An internal combustion engine for a motor cycle, wherein the side face of a cylinder is covered by leg shields 15 supported on a front frame tilted from the upper part to the rear lower side of the motor cycle with the axis C of the cylinder generally positioned horizontal and suspended across the front frame, first cooling fins formed parallel with the axis C of the cylinder are formed on the upper and lower surfaces of either or both of the cylinder and a cylinder head, and second cooling fins are formed on the right and left side surfaces of either or both of the cylinder and the cylinder head in the direction orthogonal to the axis of the cylinder, whereby running wind can be passed through downward by the vertical second cooling fins at the bottom part of a space formed of the internal combustion engine, the front frame, and the leg shields suspended on the right and left sides of the front frame.
Description
Technical field
The present invention relates to a kind of internal-combustion engine that is provided with the motorcycle of cooling fin.
Background technique
With reference to Fig. 5, the internal-combustion engine 01 that is used for scooter is suspended on front frame 02, and this front frame 02 is down extended towards the rear portion from the upper angled of front fork, and the axis C of cylinder essentially horizontally extends.Internal-combustion engine 01 comprises crankcase 04, cylinder 05 and the cylinder cap 06 as major part.The opposite side of cylinder 05 and cylinder cap 06 is coated with the leg protecting sheet 03 of shape shown in Figure 6, and this leg protecting sheet 03 has right side wall and left side wall, substantially vertically extends on the opposite side of each comfortable front frame 02 of these sidewalls.
On this scooter, the space that internal-combustion engine 01, front frame 03 and leg protecting sheet 03 are limited reduces forward gradually, and leg protecting sheet 03 has right side wall and left side wall, and these sidewalls extend on the opposite side of internal-combustion engine 01 and front frame 02.Various devices 07 are installed in the back-end region between the front frame 02 of crankcase 04 and cone space.If in the Background Region of cone space, can guarantee to have enough space air feeds to flow through, be formed at upper and lower, the right side and the cooling fin 05f on the left-hand face of cylinder 05 so and be formed at upper and lower, the right side of cylinder cap 06 and axis C ground that the cooling fin 06 on the left-hand face is parallel to cylinder 05 extends, therefore wind W can flow through the space between cooling fin 05f and 06f along the direction of the C that parallels to the axis, thus cooling internal combustion engines 01 effectively.
Even crankcase 04 increases; the device 07 that is installed in the space between crankcase 04 and front frame 02 increases; and the number of device increases along with the increase of internal-combustion engine 01; but can not increase at the right side wall of leg protecting sheet 03 and the width in the space between the left side wall, because the right side wall of leg protecting sheet 03 and the distance between the left side wall can not increase owing to the restriction of controllability.Therefore, in some cases, on the degree of depth, can not guarantee the space that has enough air feeds to flow through by the space that right side wall and left side wall limited of front frame 02 and leg protecting sheet 03.If wind can not flow through this space, so new wind can not flow through this space backward, and flows downward along the right side and the left side of cylinder 05 and cylinder cap 06.
When cylinder 05 and cylinder cap 06 as shown in fig. 5 be arranged on they right side wall and left side wall on and cooling fin 05f and 06f when being parallel to the axis C of cylinder 05 and wind direction current downflow, cooling fin 05f and 06f hinder flowing of wind, so the effect of wind when cooling internal combustion engines reduced.
Summary of the invention
The internal-combustion engine that the purpose of this invention is to provide a kind of motorcycle, this internal-combustion engine is provided with cooling fin, when the space that on the degree of depth in the space that is limited by internal-combustion engine, front frame and sidewall, is not easy to guarantee to have enough air feeds to flow through, its cooling fin is cooling internal combustion engines effectively but, and this sidewall substantially vertically extends on the right side of front frame and left side.
In order to realize this purpose, the invention provides a kind of internal-combustion engine of motorcycle, a kind of internal-combustion engine of motorcycle, motorcycle has: leg protecting sheet (15), this leg protecting sheet has right side wall and left side wall, described right side wall and left side wall extend on the opposite side of front frame (2), and front frame is down extended towards the rear portion from the upper angled of front fork (5); Described internal-combustion engine (8) has cylinder (10), the crankcase (9) that is arranged on the cylinder cap (11) of cylinder (10) front and is arranged on the back of cylinder (10), described internal-combustion engine (8) is hung by front frame (2), and the axis (C) of cylinder (10) flatly extends, extend on the right side of each comfortable front frame (2) of the right side wall of leg protecting sheet (15) and left side wall and the left side, thereby cover the opposite side of internal-combustion engine (8) and be arranged on the top of crankcase (9) and each device (18) between the described front frame (2), described cylinder (10) and cylinder cap (11) have setting cooling fin thereon;
It is characterized in that; cylinder (10) and cylinder cap (11) side surface and downside surface thereon are provided with the first straight cooling fin (10a; 11a); the described first cooling fin (10a; 11a) be parallel to the axis (C) of cylinder (10) and extend continuously by this way to cylinder (10) from cylinder cap (11); thereby the first cooling fin (10a; 11a) guiding cooling air (Wa) runs through cylinder cap (11) and cylinder (10) on direction from front to back; and cylinder (10) and its right lateral surface of cylinder cap (11) and left-hand face are provided with the second straight cooling fin (10b; 11b); its second cooling fin extends on perpendicular to the direction of the axis (C) of cylinder (10) by this way continuously and vertically; thereby in the right side wall and the space between the left side wall of the below that is defined in described front frame (2) and this leg protecting sheet (15); (10b 11b) guides to become to flow downward the cooling air of Liu Donging (Wb) by second cooling fin backward.
When being provided with the motorcycle sport of this internal-combustion engine; the wind that impinges upon on the top (this top is arranged between the right side wall and left side wall of leg protecting sheet) of the cylinder cap of internal-combustion engine is divided into upper air stream and bottom air stream haply; and upper air stream and bottom air stream flow through the space between first cooling fin; and first cooling fin is parallel to the axis of cylinder, and is formed on the uper side surface and downside surface of cylinder and cylinder cap.When the degree of depth by the space that right side wall and left side wall limited of internal-combustion engine, front frame and leg protecting sheet gets clogged and does not have enough space air feeds to flow through easily; the wind that flows into this space can not flow backward and be divided into right air stream and left air stream; and right air stream and left air stream are downward through the space between second cooling fin, second cooling fin perpendicular to the axis of cylinder and be formed at cylinder cap and the right lateral surface and left-hand face of cylinder on.
Because the internal-combustion engine of motorcycle of the present invention is provided with cooling fin, layout according to these devices of internal-combustion engine, these cooling fins extend along the flow direction of air stream, therefore cooling internal combustion engines effectively, the temperature of lubricant oil can be reduced, and the working life of internal-combustion engine can be improved.
Description of drawings
Fig. 1 is the side view that is provided with the scooter of internal-combustion engine in a preferred embodiment of the invention;
Fig. 2 is the perspective view of the internal-combustion engine in the preferred embodiment;
Fig. 3 is the perspective view of the cylinder that has of internal-combustion engine;
Fig. 4 a is the side view that helps internal-combustion engine function, shown in Figure 2 of explanation present embodiment;
Fig. 4 b is the sectional view that the line B-B along Fig. 4 a is intercepted;
Fig. 5 is the perspective view of the traditional combustion engine of scooter;
Fig. 6 is the perspective view of the leg protecting sheet that motorcycle adopted of Fig. 5.
Embodiment
With reference to Fig. 1, Fig. 1 shows a kind of scooter 1 with side view, this motorcycle is provided with the internal-combustion engine in the preferred embodiments of the present invention, the major component of body frame forms by following method: crooked back vehicle frame 3 is connected on the rear end of front frame 2, and this back vehicle frame 3 tilts up to extend to the rear portion, and front frame 2 is down extended towards the rear portion from the upper angled of front fork 5.The head pipe 4 that is connected on the front portion of front frame 2 is supporting the top of front fork 5, thereby rotates.Front-wheel is supported firmly, thereby is rotated on the lower end of front fork 5.Steering handle 7 is connected on the upper end of front fork 5.
Internal-combustion engine 8 comprises crankcase 9, cylinder 10 and cylinder cap 11.Internal-combustion engine 8 is suspended on the front frame 2, and the axis C of cylinder 10 essentially horizontally extends.Chain cover 12 extends backward from crankcase 9, and trailing wheel 13 is supported lives, thereby is rotated on the rearward end of chain cover 12.Damping device 14 has the upper end on the rear portion that is connected to back vehicle frame 3 and is connected to lower end on the rear portion of chain cover 12.Leg protecting sheet 15 on front frame 2 has the right side, left side wall, and these sidewalls cover the cylinder 10 and the cylinder cap 11 of internal-combustion engine 8.Back vehicle frame 3 usefulness bonnets 16 cover, and seat 17 is arranged on the top of bonnet 16.
With reference to Fig. 2, it shows internal-combustion engine 8 with perspective view, and internal-combustion engine 8 is arranged on the below of front frame 2, and the axis C substantial horizontal of cylinder 10 is extended.Motorcycle 1 is supported lives, thereby moves towards the right of looking along Fig. 2.As major part, except crankcase 9, cylinder 10 and cylinder cap 11, internal-combustion engine 8 also comprises the various devices 18 that are arranged on crankcase 9 tops.Be provided with cooling fin with their outer surface of the heated cylinder 10 of high temperature and cylinder cap 11.
The first cooling fin 10a is parallel to the axis C of cylinder 10, it is vertical cooling fin, these vertical cooling fins are formed at the uper side surface and the downside surface of cylinder 10, and the second cooling fin 10b perpendicular to or be substantially perpendicular to the axis C of cylinder 10, be vertical cooling fin, these vertical cooling fins are formed on the right side, left-hand face of cylinder 10.Similarly, the first cooling fin 11a that is parallel to the axis C of cylinder 10 is formed on the uper side surface and downside surface of cylinder cap 11, and the second cooling fin 11b vertical or that be substantially perpendicular to the axis C of cylinder 10 is formed on the right lateral surface and left-hand face of cylinder cap 11.These first and second cooling fins are continuous and are straight.
Fig. 3 is the perspective view of cylinder 10.The axis C of cylinder 10 represents with chain line.When the internal-combustion engine 8 that comprises cylinder 10 was installed on the motorcycle, arrow U, D, R and L represented direction upwards, downward direction, direction to the right and direction left separately.Upper and lower, the right side of cylinder 10 and left-hand face are consistent with the represented direction of arrow U, D, R and L separately.The axis C of cylinder 10 coincides with the central axis that is formed at the cylinder-bore 10c in the cylinder 10.The chain chamber 10d of timing chain is formed at the next door of cylinder-bore 10c.Cylinder 10 is provided with tensioning lift device mounting hole 10e, thereby extends between the uper side surface of cylinder 10 and chain chamber 10d.The tensioning lift device has been eliminated loose in the timing chain.Bolt hole 10f is formed in the edge section of cylinder 10.Thereby connecting bolt is fixed together crankcase 9, cylinder 10 and cylinder cap 11 by bolt hole 10f.
As mentioned above, the first cooling fin 10a of the C that parallels to the axis is formed on the uper side surface and downside surface of cylinder 10, and the second cooling fin 10b vertical or that be substantially perpendicular to axis C is formed on the right lateral surface and left-hand face of cylinder 10.When forming cylinder 10 by means of cast aluminium material, cooling fin 10a and 10b and cylinder 10 form one.When forming cylinder cap 11 by cast aluminium material, the cooling fin 11a of cylinder cap 11 and 11b and cylinder cap 11 form one.
Fig. 4 a and 4b are the views that helps to explain function of the present invention.Fig. 4 a is the side view of internal-combustion engine 8, and Fig. 4 b is the sectional view that the line B-B along Fig. 4 a is intercepted.Internal-combustion engine 8 is suspended on the front frame 2.The major part of the internal-combustion engine 8 shown in Fig. 4 a and the 4b is crankcase 9, cylinder 10, cylinder cap 11 and installs 18, is arranged between front frame 2 and the crankcase 9 and install 18.Leg protecting sheet 15 extends downwards on the right side of internal-combustion engine 8 and left side, thereby protection cyclist's leg is avoided the high temperature heating.In Fig. 4 a, the left side wall of leg retaining plate 15 has been removed.These devices 18 have been occupied the space that front frame 2, leg retaining plate 15 and crankcase 9 are limited, and almost can not obtain being used for the gap that air flows in this space.
Flow into behind the wind direction in the space between front frame 2 and leg protecting sheet 15.The wind Wa that impinges upon on the top of cylinder cap 11 is divided into upper air stream and bottom air stream haply, and upper air stream and bottom air stream flow through the space between the first cooling fin 11a and the 10a, these first cooling fins C that parallels to the axis, and be formed on the uper side surface and downside surface of cylinder 10 and cylinder cap 11.The wind Wb that flow in the space between front frame 2 and the cylinder cap 11 can not flow backward, because the degree of depth in this space has been plugged basically.Therefore, wind Wb is divided into right air stream and left air stream, and right air stream and left air stream are downward through the space between the second cooling fin 11a and the 10b, these second cooling fins perpendicular to axis C and be formed at cylinder cap 11 and the right lateral surface and left-hand face of cylinder 10 on.At last, the air stream that flows through the space between the first cooling fin 11a and the 10a (these cooling fins are parallel to the axis C of cylinder) flows downward along the right lateral surface and the left-hand face of cylinder 10.
Because the second cooling fin 11b and 10b perpendicular to axis C are formed on the right lateral surface and left-hand face of cylinder cap 11 and cylinder 10 separately, therefore, in the space above cylinder 10 backward flow air be downward through second cooling fin 11b of cylinder cap 11 and cylinder 10 and the space between the 10b.Therefore, wind has cooled off internal-combustion engine 8 effectively, and has reduced the temperature of lubricant oil, therefore the working life of having improved internal-combustion engine 8.
In the above-described embodiments, the second cooling fin 11b and 10b are formed straight, but they can locally form curved shape, thereby guarantee that air flows glibly along them.
Claims (1)
1. the internal-combustion engine of a motorcycle, motorcycle has: leg protecting sheet (15), this leg protecting sheet has right side wall and left side wall, and described right side wall and left side wall extend on the opposite side of front frame (2), and front frame is down extended towards the rear portion from the upper angled of front fork (5); Described internal-combustion engine (8) has cylinder (10), the crankcase (9) that is arranged on the cylinder cap (11) of cylinder (10) front and is arranged on the back of cylinder (10), described internal-combustion engine (8) is hung by front frame (2), and the axis (C) of cylinder (10) flatly extends, extend on the right side of each comfortable front frame (2) of the right side wall of leg protecting sheet (15) and left side wall and the left side, thereby cover the opposite side of internal-combustion engine (8) and be arranged on the top of crankcase (9) and each device (18) between the described front frame (2), described cylinder (10) and cylinder cap (11) have setting cooling fin thereon;
It is characterized in that; cylinder (10) and cylinder cap (11) side surface and downside surface thereon are provided with the first straight cooling fin (10a; 11a); the described first cooling fin (10a; 11a) be parallel to the axis (C) of cylinder (10) and extend continuously by this way to cylinder (10) from cylinder cap (11); thereby the first cooling fin (10a; 11a) guiding cooling air (Wa) runs through cylinder cap (11) and cylinder (10) on direction from front to back; and cylinder (10) and its right lateral surface of cylinder cap (11) and left-hand face are provided with the second straight cooling fin (10b; 11b); its second cooling fin extends on perpendicular to the direction of the axis (C) of cylinder (10) by this way continuously and vertically; thereby in the right side wall and the space between the left side wall of the below that is defined in described front frame (2) and this leg protecting sheet (15); (10b 11b) guides to become to flow downward the cooling air of Liu Donging (Wb) by second cooling fin backward.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP333830/2001 | 2001-10-31 | ||
| JP2001333830A JP3632848B2 (en) | 2001-10-31 | 2001-10-31 | Internal combustion engine for motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1423043A CN1423043A (en) | 2003-06-11 |
| CN1185411C true CN1185411C (en) | 2005-01-19 |
Family
ID=19149043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021459932A Expired - Fee Related CN1185411C (en) | 2001-10-31 | 2002-10-31 | IC engine of motorcycle |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1441114B1 (en) |
| JP (1) | JP3632848B2 (en) |
| KR (1) | KR20040044391A (en) |
| CN (1) | CN1185411C (en) |
| AR (1) | AR037163A1 (en) |
| BR (1) | BR0206227B1 (en) |
| ES (1) | ES2414863T3 (en) |
| MY (1) | MY129190A (en) |
| WO (1) | WO2003038249A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005105847A (en) * | 2003-09-26 | 2005-04-21 | Honda Motor Co Ltd | Lubricating oil cooling device |
| JP5314909B2 (en) * | 2008-03-26 | 2013-10-16 | 本田技研工業株式会社 | Vehicle-mounted internal combustion engine |
| DE102017213722A1 (en) * | 2017-08-08 | 2019-02-14 | Bayerische Motoren Werke Aktiengesellschaft | Drive device for a motorcycle |
| JP7453012B2 (en) * | 2020-02-14 | 2024-03-19 | 本田技研工業株式会社 | air-cooled internal combustion engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE404818A (en) * | ||||
| JPS58154841U (en) * | 1982-04-09 | 1983-10-17 | スズキ株式会社 | Cooling structure for air-cooled motorcycle engines |
| JPS62223444A (en) | 1986-03-20 | 1987-10-01 | Kawasaki Heavy Ind Ltd | Engine for motorcycle, and the like |
-
2001
- 2001-10-31 JP JP2001333830A patent/JP3632848B2/en not_active Expired - Fee Related
-
2002
- 2002-09-13 BR BRPI0206227-5A patent/BR0206227B1/en not_active IP Right Cessation
- 2002-09-13 WO PCT/JP2002/009423 patent/WO2003038249A1/en active Application Filing
- 2002-09-13 ES ES02760832T patent/ES2414863T3/en not_active Expired - Lifetime
- 2002-09-13 EP EP02760832.2A patent/EP1441114B1/en not_active Expired - Fee Related
- 2002-09-13 KR KR10-2003-7007520A patent/KR20040044391A/en active Search and Examination
- 2002-10-29 MY MYPI20024050A patent/MY129190A/en unknown
- 2002-10-30 AR ARP020104133A patent/AR037163A1/en active IP Right Grant
- 2002-10-31 CN CNB021459932A patent/CN1185411C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1441114A4 (en) | 2008-04-16 |
| ES2414863T3 (en) | 2013-07-23 |
| WO2003038249A1 (en) | 2003-05-08 |
| JP3632848B2 (en) | 2005-03-23 |
| EP1441114A1 (en) | 2004-07-28 |
| KR20040044391A (en) | 2004-05-28 |
| BR0206227B1 (en) | 2011-02-08 |
| AR037163A1 (en) | 2004-10-27 |
| EP1441114B1 (en) | 2013-06-12 |
| CN1423043A (en) | 2003-06-11 |
| BR0206227A (en) | 2003-12-23 |
| MY129190A (en) | 2007-03-30 |
| JP2003138936A (en) | 2003-05-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050119 Termination date: 20161031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |