EP1403496B1 - Air-cooled internal combustion engine - Google Patents
Air-cooled internal combustion engine Download PDFInfo
- Publication number
- EP1403496B1 EP1403496B1 EP03103501A EP03103501A EP1403496B1 EP 1403496 B1 EP1403496 B1 EP 1403496B1 EP 03103501 A EP03103501 A EP 03103501A EP 03103501 A EP03103501 A EP 03103501A EP 1403496 B1 EP1403496 B1 EP 1403496B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling air
- air passage
- internal combustion
- combustion engine
- fore
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 37
- 238000001816 cooling Methods 0.000 claims description 53
- 238000004891 communication Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000013021 overheating Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Images
Classifications
-
- 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
- F02F1/32—Finned cylinder heads the cylinder heads being of overhead valve type
-
- 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
- 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
-
- 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
- F01P1/06—Arrangements for cooling other engine or machine parts
- F01P1/10—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
-
- 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
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
Definitions
- the present invention relates to a cooling air passage for an air-cooled internal combustion engine mounted on a motorcycle and the like.
- an air-cooled internal combustion engine in the related art having the following structure.
- this internal combustion engine includes two exhaust ports and two exhaust valves corresponding thereto disposed side by side at the front portion of a cylinder head, and two intake ports and two intake valves corresponding thereto disposed also side by side at the rear portion thereof, an ignition plug disposed at the position surrounded by the aforementioned four valves, a laterally oriented camshaft disposed between a cylinder head and a cylinder head cover, a cooling air passage passing between the two exhaust valves and between the two intake valves, and then through the cylinder head in the fore-and-aft direction, and a laterally extending cooling air passage in communication with the aforementioned cooling air passage extending in the fore-and-aft direction (for example, see Patent Document 1).
- an ignition plug mounting hole surrounding the body of the ignition plug with a clearance left therebetween is formed on the cylinder head, and the ignition plug mounting hole communicates with the aforementioned cooling air passage extending in the fore-and-aft direction.
- part of incoming air is flown out upwardly of the internal combustion engine from the aforementioned ignition plug mounting hole, another part of air is flown out toward the side of the internal combustion engine from the laterally extending cooling air passage, and remaining part of air is flown out rearward from a rear opening of the cooling air passage extending in the fore-an-aft direction.
- the cylinder head and the ignition plug is cooled.
- EP-A-845 583 and JP-B-43050 (Fig.2, Fig. 3) are related to that prior art. Problems to be solved by the Invention In the related art, the effect of air-cooling in the cooling air passage is not sufficient. In addition, mounting and dismounting of the ignition plug is not easy.
- the present invention is intended to improve air-cooling effect in the cooling air passage, to provide the ignition plug at such position that enables easy mounting and dismounting while enabling the effective air-cooling thereof. Means for Solving the Problems and Advantages
- the present invention contributes to solve the aforementioned problems, by the features according to Claim 1
- the present invention is constructed as described above and the cooling fin is provided in the cooling air passage above the combustion chamber, the portion around the combustion chamber may be effectively cooled. Since the ignition plug is provided in the laterally extending cooling air passage, and the cooling fin is curved so as to guide a cooling air toward the ignition plug, overheating of the ignition plug may be prevented.
- the embodiment according to Claim 2 is an air- cooled internal combustion engine as set forth in Claim 1, characterized in that the centreline of the aforementioned exhaust port is inclined with respect to the fore-and-aft direction of he internal combustion engine so as to broaden the front opening of the aforementioned cooling air passage extending in the fore-and-aft direction.
- Fig. 1 is a vertical cross sectional view of a principal portion of an air-cooled internal combustion engine 1 according to one embodiment of he present invention, showing the upper portion of an OHC (overhead camshaft) single cylinder internal combustion engine.
- an arrow F represents the front.
- an outer shell of the principal portion of an internal combustion engine 1 includes a cylinder block 2, a cylinder head 3, and a cylinder head cover 4.
- a combustion chamber 6 is formed on the bottom face side of the cylinder head 3.
- the cylinder head 3 is formed with an exhaust port 7 and an intake port 9 communicating with the combustion chamber 6.
- the exhaust port 7 is provided with an exhaust valve 8 at the inner end thereof for opening and closing the port.
- An exhaust pipe, not shown, is continuing form the outer end at the exhaust port 7.
- the intake port 9 is provided with an intake valve 10 at his inner end thereof for opening and closing the port.
- a carburettor is connected to the outer end of he intake port 9.
- the exhaust valve 8 is provided so that a shaft portion 8a thereof is inclined forwardly of the cylinder head 3, and a valve spring 11 for urging the exhaust valve 8 in the direction to close the exhaust valve 8 is attached on the upper projection of the shaft portion 8a.
- the intake valve 10 is provided so that a shaft portion 10a thereof inclines rearward of the cylinder head 3, and a valve spring 12 for urging the intake valve 10 in the direction of closing is attached on the upper projection of the shaft portion 10a.
- a valve gear chamber 13 is formed by the cylinder head 3 and the cylinder head cover 4, and a valve gear mechanism for opening and closing the aforementioned exhaust valve 8 and the intake valve 10 are stored therein.
- An exhaust cam 15 for opening and closing the exhaust valve 8 and an intake cam 16 for opening and closing the intake valve 10 are formed on the camshaft 14.
- a exhaust rocker arm 17 is pivotably supported above the exhaust valve 8 by a rocker exhaust arm shaft 18. One end thereof is in contact with the upper end of the shaft portion 8a of the exhaust valve via a tappet 19, and the other end thereof is in contact with the exhaust cam 15 via an exhaust roller 21 supported by a roller shaft 20.
- An intake rocker arm 22 is pivotably supported by an intake rocker arm shaft 23 above the intake valve 10. One end thereof is in contact with the upper end of the shaft portion 10a of the intake valve via a tappet 24, and the other end is in contact with an intake cam 16 via an intake roller 26 supported by a roller shaft 25.
- Fig. 2 is a lateral cross section of a principle portion of the aforementioned internal combustion engine 1.
- the cylinder head 3 is attached with an ignition plug 27 on the right side thereof, and an electrode 27a at the distal end thereof projects into the combustion chamber 6.
- One end of the camshaft 14 projects. into a chain chamber 28, on which a driven sprocket 29 is secured.
- a drive sprocket (not shown) is secured on the crankshaft and a cam chain 30 is put around the aforementioned drive sprocket and the driven sprocket 29.
- the camshaft 14 is rotated via the cam chain 30.
- Fig. 3 is a cross sectional view taken along the line III-III in Fig. 2, showing a horizontal cross section of the cylinder head of the aforementioned internal combustion engine.
- An arrow F indicates the front.
- a cooling air passage extending in the fore-and-aft direction 32 passes through the cylinder head in the fore-and-aft direction is formed along a peripheral wall 28a of the chain chamber 28 on the side of the center of the cylinder head.
- a space interposed between the peripheral wall 28a of the chain chamber and a peripheral wall 7a of the exhaust port is a front opening 33
- a space interposed between the peripheral wall 28a of the chain chamber and a peripheral wall 9a of the intake port is a rear opening 34.
- Formed on both sides of the ignition plug mounting portion 31 is a side opening 36.
- the centerline A of the exhaust port 7 is inclined by an angle ⁇ with respect to the fore-and-aft direction B of the internal combustion engine toward the direction to broaden the front opening 33, so that the opening area of the front opening 33 is increased and thus a large quantity of air is introduced into the cooling air passage.
- Three cooling fins are formed at the connecting portion between the cooling air passage 32 extending in the fore-and-aft direction and the laterally extending cooling air passage 35, and within the laterally extending cooling air passage 35 . They are a front fin 37, a middle fin 38, and a rear fin 39.
- the shadowed portions of the middle fin 38 and the rear fin 39 in the figure are thicker and higher portions having increased thickness for reinforcement, and the top portions continue to the ceiling of the cooling air passage.
- Fig. 4 is a perspective view of the aforementioned cooling fins when viewed from the rear obliquely upside.
- the shadowed portions of the middle fin 38 and the rear fin 39 at the top thereof are cross sections of the top portions of the thicker and higher portions 38a and 39a continuing to the ceiling of the cooling air passage.
- a cross sectional view showing three fins is shown in the laterally extending cooling air passage 35.
- the aforementioned three fins provided in the cooling air passage are shown as they are viewed from the backside of the internal combustion engine.
- the construction of the air-cooled internal combustion engine of the present invention is as described above. Against wind is generated when a motorcycle is traveling having the present internal combustion engine mounted thereon, and the against wind generated by traveling flows from the front opening 33 of the cooling air passage 32 extending in the fore-and-aft direction, part of which passed through the laterally extending cooling air passage 35 and then both side of the ignition plug 27, and flown out from the side opening 36 by the guiding action of the three fins. Another part thereof passes between three fins, and flown out from the rear opening 34 of the cooling air passage 32 extending in the fore-and-aft direction.
- An outer wall surface of the cylinder head facing toward the cooling air passage 32 extending in the fore-and-aft direction and the laterally extending cooling air passage 35 is cooled by against wind generated by traveling during travel of the vehicle.
- high temperatures in the combustion chamber 6 is conducted to the front, middle, and rear fins 37, 38, and 39 via a top outer shell 40 of the combustion chamber (Fig. 2), and cooled down by cooing air flowing in the fore-and-aft direction, and cooling air flowing in the lateral direction.
- the ignition plug of the present invention is provided in the laterally extending cooling air passage in a slanted state, it can be dismounted easily from the side of the internal combustion engine, and thus maintenanceability is improved.
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)
- Valve-Gear Or Valve Arrangements (AREA)
Description
- The present invention relates to a cooling air passage for an air-cooled internal combustion engine mounted on a motorcycle and the like.
- There is an air-cooled internal combustion engine in the related art having the following structure. In this internal combustion engine includes two exhaust ports and two exhaust valves corresponding thereto disposed side by side at the front portion of a cylinder head, and two intake ports and two intake valves corresponding thereto disposed also side by side at the rear portion thereof, an ignition plug disposed at the position surrounded by the aforementioned four valves, a laterally oriented camshaft disposed between a cylinder head and a cylinder head cover, a cooling air passage passing between the two exhaust valves and between the two intake valves, and then through the cylinder head in the fore-and-aft direction, and a laterally extending cooling air passage in communication with the aforementioned cooling air passage extending in the fore-and-aft direction (for example, see Patent Document 1). In this example, an ignition plug mounting hole surrounding the body of the ignition plug with a clearance left therebetween is formed on the cylinder head, and the ignition plug mounting hole communicates with the aforementioned cooling air passage extending in the fore-and-aft direction.
When a motorcycle travels with the internal combustion engine mounted thereon, air is flown from a front opening of the cooling air passage extending in the fore-and-aft direction. Then part of incoming air is flown out upwardly of the internal combustion engine from the aforementioned ignition plug mounting hole, another part of air is flown out toward the side of the internal combustion engine from the laterally extending cooling air passage, and remaining part of air is flown out rearward from a rear opening of the cooling air passage extending in the fore-an-aft direction. In the process of such airflow, the cylinder head and the ignition plug is cooled. -
EP-A-845 583 JP-B-43050
Problems to be solved by the Invention
In the related art, the effect of air-cooling in the cooling air passage is not sufficient. In addition, mounting and dismounting of the ignition plug is not easy. The present invention is intended to improve air-cooling effect in the cooling air passage, to provide the ignition plug at such position that enables easy mounting and dismounting while enabling the effective air-cooling thereof.
Means for Solving the Problems and Advantages - The present invention contributes to solve the aforementioned problems, by the features according to Claim 1
- Since the present invention is constructed as described above and the cooling fin is provided in the cooling air passage above the combustion chamber, the portion around the combustion chamber may be effectively cooled. Since the ignition plug is provided in the laterally extending cooling air passage, and the cooling fin is curved so as to guide a cooling air toward the ignition plug, overheating of the ignition plug may be prevented.
- The embodiment according to
Claim 2 is an air- cooled internal combustion engine as set forth in Claim 1, characterized in that the centreline of the aforementioned exhaust port is inclined with respect to the fore-and-aft direction of he internal combustion engine so as to broaden the front opening of the aforementioned cooling air passage extending in the fore-and-aft direction. - In this arrangement of the present invention, since an opening area of the front opening is increased, and thus a large quantity of air may be introduced into the cooling air passage, the air-cooling effect utilizing against wind generating by travel may be improved.
- The invention is now described with the following figures:
- Fig. 1 is a vertical cross sectional view of a principal portion of an air-cooled internal combustion engine according to one embodiment of the present invention.
- Fig 2 is a lateral cross section of a principle portion of the aforementioned internal combustion engine.
- Fig. 3 is a cross sectional view showing a horizontal cross section (taken along the line III-III in Fig. 2) of the cylinder head of the aforementioned internal combustion chamber.
- Fig. 4 is a perspective view of the cooling fins when viewed from the rear obliquely upside.
- Fig. 1 is a vertical cross sectional view of a principal portion of an air-cooled internal combustion engine 1 according to one embodiment of he present invention, showing the upper portion of an OHC (overhead camshaft) single cylinder internal combustion engine. In the figure, an arrow F represents the front. In the figure, an outer shell of the principal portion of an internal combustion engine 1 includes a
cylinder block 2, acylinder head 3, and acylinder head cover 4. Apiston 5 moved upward and downward in thecylinder block 2. Acombustion chamber 6 is formed on the bottom face side of thecylinder head 3. Thecylinder head 3 is formed with anexhaust port 7 and anintake port 9 communicating with thecombustion chamber 6. Theexhaust port 7 is provided with anexhaust valve 8 at the inner end thereof for opening and closing the port. An exhaust pipe, not shown, is continuing form the outer end at theexhaust port 7. Theintake port 9 is provided with anintake valve 10 at his inner end thereof for opening and closing the port. A carburettor, not shown, is connected to the outer end of heintake port 9. - The
exhaust valve 8 is provided so that ashaft portion 8a thereof is inclined forwardly of thecylinder head 3, and avalve spring 11 for urging theexhaust valve 8 in the direction to close theexhaust valve 8 is attached on the upper projection of theshaft portion 8a. Theintake valve 10 is provided so that ashaft portion 10a thereof inclines rearward of thecylinder head 3, and avalve spring 12 for urging theintake valve 10 in the direction of closing is attached on the upper projection of theshaft portion 10a. - A
valve gear chamber 13 is formed by thecylinder head 3 and thecylinder head cover 4, and a valve gear mechanism for opening and closing theaforementioned exhaust valve 8 and theintake valve 10 are stored therein. Acamshaft 14, which extends laterally so as to be orthogonal to the fore-and-aft direction of the internal combustion engine 1, is rotatably supported between the mating surfaces of thecylinder head 3 and thecylinder head cover 4. Anexhaust cam 15 for opening and closing theexhaust valve 8 and anintake cam 16 for opening and closing theintake valve 10 are formed on thecamshaft 14. - A
exhaust rocker arm 17 is pivotably supported above theexhaust valve 8 by a rockerexhaust arm shaft 18. One end thereof is in contact with the upper end of theshaft portion 8a of the exhaust valve via atappet 19, and the other end thereof is in contact with theexhaust cam 15 via anexhaust roller 21 supported by aroller shaft 20. Anintake rocker arm 22 is pivotably supported by an intakerocker arm shaft 23 above theintake valve 10. One end thereof is in contact with the upper end of theshaft portion 10a of the intake valve via atappet 24, and the other end is in contact with anintake cam 16 via anintake roller 26 supported by aroller shaft 25. - Fig. 2 is a lateral cross section of a principle portion of the aforementioned internal combustion engine 1. In the figure, the
cylinder head 3 is attached with anignition plug 27 on the right side thereof, and anelectrode 27a at the distal end thereof projects into thecombustion chamber 6. One end of the camshaft 14 projects. into achain chamber 28, on which a drivensprocket 29 is secured. A drive sprocket (not shown) is secured on the crankshaft and acam chain 30 is put around the aforementioned drive sprocket and the drivensprocket 29. When the crankshaft is rotated, thecamshaft 14 is rotated via thecam chain 30. - Fig. 3 is a cross sectional view taken along the line III-III in Fig. 2, showing a horizontal cross section of the cylinder head of the aforementioned internal combustion engine. In the figure, a state in which an
ignition plug 27 is dismounted, and the ignitionplug mounting portion 31 is exposed. An arrow F indicates the front. A cooling air passage extending in the fore-and-aft direction 32 passes through the cylinder head in the fore-and-aft direction is formed along aperipheral wall 28a of thechain chamber 28 on the side of the center of the cylinder head. A space interposed between theperipheral wall 28a of the chain chamber and aperipheral wall 7a of the exhaust port is afront opening 33, a space interposed between theperipheral wall 28a of the chain chamber and aperipheral wall 9a of the intake port is arear opening 34. In addition, a laterally extendingcooling air passage 35 in communication with the aforementionedcooling air passage 32 extending in the fore-and-aft direction, passing between theperipheral wall 7a of the exhaust port and theperipheral wall 9a of the intake port, and continuing to the side of the internal combustion engine. Formed on both sides of the ignitionplug mounting portion 31 is a side opening 36. As shown in the figure, the centerline A of theexhaust port 7 is inclined by an angle α with respect to the fore-and-aft direction B of the internal combustion engine toward the direction to broaden thefront opening 33, so that the opening area of thefront opening 33 is increased and thus a large quantity of air is introduced into the cooling air passage. - Three cooling fins are formed at the connecting portion between the
cooling air passage 32 extending in the fore-and-aft direction and the laterally extendingcooling air passage 35, and within the laterally extendingcooling air passage 35 . They are afront fin 37, amiddle fin 38, and arear fin 39. The shadowed portions of themiddle fin 38 and therear fin 39 in the figure are thicker and higher portions having increased thickness for reinforcement, and the top portions continue to the ceiling of the cooling air passage. - Fig. 4 is a perspective view of the aforementioned cooling fins when viewed from the rear obliquely upside. The shadowed portions of the
middle fin 38 and therear fin 39 at the top thereof are cross sections of the top portions of the thicker andhigher portions cooling air passage 35. In Fig. 2, the aforementioned three fins provided in the cooling air passage are shown as they are viewed from the backside of the internal combustion engine. - The construction of the air-cooled internal combustion engine of the present invention is as described above. Against wind is generated when a motorcycle is traveling having the present internal combustion engine mounted thereon, and the against wind generated by traveling flows from the
front opening 33 of the coolingair passage 32 extending in the fore-and-aft direction, part of which passed through the laterally extendingcooling air passage 35 and then both side of theignition plug 27, and flown out from theside opening 36 by the guiding action of the three fins. Another part thereof passes between three fins, and flown out from therear opening 34 of the coolingair passage 32 extending in the fore-and-aft direction. - An outer wall surface of the cylinder head facing toward the cooling
air passage 32 extending in the fore-and-aft direction and the laterally extendingcooling air passage 35 is cooled by against wind generated by traveling during travel of the vehicle. Especially, high temperatures in thecombustion chamber 6 is conducted to the front, middle, andrear fins outer shell 40 of the combustion chamber (Fig. 2), and cooled down by cooing air flowing in the fore-and-aft direction, and cooling air flowing in the lateral direction. By such cooling effect, the overheating of the cylinder head is prevented, and deterioration of seals around the cylinder head is prevented. Since high temperature generated at an electrode 30a of theignition plug 30 is conducted to the outward exposed portion of theignition plug 30, and cooled by the aforementioned cooling air flowing in the lateral direction, deterioration of the ignition plug due to overheating may be prevented, and thus the life of the ignition plug may be elongated. The ignition plug of the present invention is provided in the laterally extending cooling air passage in a slanted state, it can be dismounted easily from the side of the internal combustion engine, and thus maintenanceability is improved. - In addition, as shown in Fig. 3, since the centerline A of the
exhaust port 7 is inclined with respect to the fore-and-aft direction B of the internal combustion engine by an angle of α in the direction of broadening thefront opening 33, the opening area of thefront opening 33 increases, and thus a large quantity of air may be introduced. Therefore, the air-cooling effect utilizing against wind generating by travel may be improved.
Claims (2)
- An air-cooler internal combustion engine comprising:a valve gear mechanism provided above a combustion chamber; anda cooling air passage extending in the fore-and-aft direction between said combustion chamber and said valve gear mechanism along an exhaust port and an intake port,characterized in that a laterally extending cooling air passage in communication with said cooling air passage extending in the fore-and-aft direction is provided between said exhaust port and the intake port, an ignition plug is provided in the laterally extending cooling air passage, and a cooling fin curved from said cooling air passage extending in the fore-and-aft direction toward said laterally extending cooling air passage is provided.
- An air-cooled internal combustion engine according to Claim 1, characterized in that a centreline of said exhaust port is inclined with respect to the fore-and-aft direction of an internal combustion engine so as to broaden a front opening of said cooling air passage extending in the fore-and-aft direction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002276924 | 2002-09-24 | ||
JP2002276924 | 2002-09-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1403496A1 EP1403496A1 (en) | 2004-03-31 |
EP1403496B1 true EP1403496B1 (en) | 2007-11-14 |
Family
ID=31973231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03103501A Expired - Lifetime EP1403496B1 (en) | 2002-09-24 | 2003-09-22 | Air-cooled internal combustion engine |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1403496B1 (en) |
KR (1) | KR100569164B1 (en) |
CN (1) | CN100526631C (en) |
BR (1) | BR0304160A (en) |
ES (1) | ES2295513T3 (en) |
MX (1) | MXPA03008260A (en) |
TW (1) | TWI221877B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9534528B2 (en) | 2011-12-07 | 2017-01-03 | Andreas Stihl Ag & Co. Kg | Internal combustion engine with fuel system |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4327771B2 (en) * | 2005-06-23 | 2009-09-09 | 本田技研工業株式会社 | Air-cooled engine |
JP5479965B2 (en) * | 2010-03-23 | 2014-04-23 | 本田技研工業株式会社 | Spark plug cooling device for vehicle engine |
EP2410164A3 (en) * | 2010-07-19 | 2012-10-10 | Kwang Yang Motor Co., Ltd. | Structure of cylinder head of air cooling engine |
TWI381093B (en) * | 2011-02-21 | 2013-01-01 | Kwang Yang Motor Co | Air Cooling Engine 's Cylinder Head Heat Dissipation |
CN102312750A (en) * | 2011-03-14 | 2012-01-11 | 隆鑫通用动力股份有限公司 | Gasoline engine and air-cooled cylinder head thereof |
CN102312718B (en) * | 2011-03-14 | 2014-12-10 | 隆鑫通用动力股份有限公司 | Universal gasoline engine |
DE102011120464A1 (en) * | 2011-12-07 | 2013-06-13 | Andreas Stihl Ag & Co. Kg | implement |
TWI454616B (en) * | 2012-08-22 | 2014-10-01 | Kwang Yang Motor Co | Engine heat dissipation of cylinder head |
JP2014070621A (en) * | 2012-10-01 | 2014-04-21 | Yamaha Motor Co Ltd | Air-cooled internal combustion engine and saddle type vehicle with the same |
CN105201612B (en) * | 2014-06-10 | 2018-08-07 | 光阳工业股份有限公司 | The engine air guide structure of motorcycle |
JP6900418B2 (en) * | 2019-03-29 | 2021-07-07 | 本田技研工業株式会社 | Internal combustion engine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5301641A (en) * | 1991-11-06 | 1994-04-12 | Honda Giken Kogyo Kabushiki Kaisha | Internal combustion engine |
JPH10159510A (en) * | 1996-11-29 | 1998-06-16 | Kawasaki Heavy Ind Ltd | Valve structure of over head valve type engine |
TW358848B (en) * | 1997-06-25 | 1999-05-21 | Mitsubishi Heavy Ind Ltd | Structure of overhead-valve internal combustion engine and manufacturing method for the same |
-
2003
- 2003-08-28 KR KR1020030059868A patent/KR100569164B1/en not_active IP Right Cessation
- 2003-09-02 TW TW092124229A patent/TWI221877B/en not_active IP Right Cessation
- 2003-09-12 MX MXPA03008260A patent/MXPA03008260A/en active IP Right Grant
- 2003-09-15 CN CNB031588646A patent/CN100526631C/en not_active Expired - Fee Related
- 2003-09-17 BR BR0304160-3A patent/BR0304160A/en not_active Application Discontinuation
- 2003-09-22 EP EP03103501A patent/EP1403496B1/en not_active Expired - Lifetime
- 2003-09-22 ES ES03103501T patent/ES2295513T3/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9534528B2 (en) | 2011-12-07 | 2017-01-03 | Andreas Stihl Ag & Co. Kg | Internal combustion engine with fuel system |
Also Published As
Publication number | Publication date |
---|---|
TWI221877B (en) | 2004-10-11 |
CN100526631C (en) | 2009-08-12 |
CN1497158A (en) | 2004-05-19 |
TW200409859A (en) | 2004-06-16 |
BR0304160A (en) | 2004-08-31 |
MXPA03008260A (en) | 2004-09-03 |
ES2295513T3 (en) | 2008-04-16 |
EP1403496A1 (en) | 2004-03-31 |
KR20040026599A (en) | 2004-03-31 |
KR100569164B1 (en) | 2006-04-07 |
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