CN1076077C - Air cooled internal combustion engine - Google Patents
Air cooled internal combustion engine Download PDFInfo
- Publication number
- CN1076077C CN1076077C CN95102500A CN95102500A CN1076077C CN 1076077 C CN1076077 C CN 1076077C CN 95102500 A CN95102500 A CN 95102500A CN 95102500 A CN95102500 A CN 95102500A CN 1076077 C CN1076077 C CN 1076077C
- Authority
- CN
- China
- Prior art keywords
- cylinder
- air
- cooling fan
- combustion engine
- mentioned
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 86
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005192 partition Methods 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
-
- 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
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
The purpose of the invention is to enable, the cylinder or the cylinder head of an internal combustion engine to be evenly cooled by means of cooling air generated by a cooling fan directly connected to a crank shaft. Many cooling fins are formed on the outer peripheral surfaces of a cylinder block 14 and a cylinder head 15 at specific intervals and a centrifugal cooling fan 26 is integrally attached to the right end of a crank shaft 22, moreover the crank shaft 22 and the centrifugal cooling fan 26 are to be rotated clockwise seen from the right side of a vehicle body. The right side part 23b of the cooling fan 23 inclined forward and downward from the vehicle body by 45 deg. and then smoothly bent downward, and it is orientated in the circumferential direction perpendicular to a cylinder center line, and the fin left side part 23c and lower part 23d on the left part and the lower part of the cylinder block 14 are orientated in the circumferential direction.
Description
The present invention relates to the air-cooled internal combustion engine internal-combustion engine of air cooling and double as water-cooled (but comprise), this internal-combustion engine has cold sink, and the cold wind by the cooling fan that directly links to each other with bent axle can all cool off the cylinder and the cylinder head of internal-combustion engine through radiating fin.
Opening clear 63-No. 3290 communiques discloses following internal-combustion engine in fact: cylinder and cylinder head as internal-combustion engine heat release part cover with guard shield, by with the revolution of the cooling fan of bent axle one, the cold wind that guard shield cooling air suction port is sucked blows to the cold sink of above-mentioned cylinder and cylinder head, cools off this cylinder and cylinder head.
In the air-cooled internal combustion engine of above-mentioned communique record, cold wind from the suction of guard shield cooling air suction port, be directed to the cylinder head direction by guard shield, so, after this cold wind contacts the cylinder external peripheral surface cold sink of vertical formation with cylinder centerline, can not flow to the cylinder head directional smoothing, cylinder can not be cooled all sidedly along its centerline direction.
In addition, near the cooling fan periphery in guard shield, with the plane by crankshaft axis and cylinder centerline is a side part of boundary, the cold wind of cooling fan can blow to this part well, a but side relative with it, the cooling air of cooling fan but be difficult to blow and, so the integral body of cylinder and cylinder head is difficult to be cooled off uniformly.
The present invention relates to overcome the improvement of the air-cooled internal combustion engine of above-mentioned difficult point.Have many pieces of cold sinks being arranged on cylinder and the cylinder head, be inlaid in the centrifugal cooling fan of bent axle axle head and cover this cylinder and the air-cooled internal combustion engine of the guard shield of cylinder head and cooling fan in, it is characterized in that: the cooling air that blows in the guard shield with above-mentioned centrifugal cold fan is relative, groove is open-ended between the radiating fin that above-mentioned many pieces of cold sinks are separated out, simultaneously between this radiating fin groove vertically with above-mentioned cooling airflow to tilting with less angular cross.
Because the present invention has structure as mentioned above, the cooling air that is blown out by cooling air outlet can not produce turbulent flow and flows smoothly along the true dip direction of above-mentioned cold sink, consequently above-mentioned cylinder axially reaches circumferencial direction along it and can both all be cooled off efficiently, and cooling performance is good.
In addition, among the present invention, blow to the open-ended side smooth flow of groove between the radiating fin that the cooling air in the guard shield is separated out from above-mentioned a plurality of cold sinks along cold sink by above-mentioned centrifugal cooling fan, so, even the cooling air that is imported in the above-mentioned guard shield by above-mentioned cooling fan contains a large amount of dust, these dust can not adhere to or be stacked on the above-mentioned cold sink yet, can guarantee it is discharged to outside the guard shield, the cooling performance reduction that causes of adhering to, pile up of dust can be prevented trouble before it happens.
Among the present invention, the suction port of above-mentioned centrifugal cooling fan is distolateral outside the bent axle in the cooling fan outside, and cooling fan cooling air outlet position is positioned at the fan excircle outside radially, and towards the direction parallel with cylinder-bore axis, and towards cylinder.Therefore, air guard shield is outer by this cooling fan imports in this guard shield, smoothly wind is delivered to cylinder block and cylinder cap, can cool off effectively really.
Among the present invention, the cold wind blow-off outlet is in the bent axle outside, so cooling fan can be configured in along the place of crankshaft center line away from cylinder centerline, so can between above-mentioned cylinder and cooling fan, dispose mono-directional overrun clutch, the motor constant power output unit of scooter drive system, can make the whole internal-combustion engine miniaturization.
Among the present invention, cold sink is the crooked forming V-shape in boundary with a separatrix, so the cold wind that blows out from cooling air outlet is imported into the open-ended of groove between the radiating fin that above-mentioned many pieces of cold sinks separate, then with the radiating fin separated into two parts of above-mentioned v-shaped bending, moving along concentrated flow between this cold sink, as can to cool off above-mentioned cylinder external peripheral surface equably most of zone.
Radiating fin of the present invention can be made curl, so be directed to the open-ended of groove between the radiating fin, and flow along the spiral cold sink from the cold wind of cold wind blow-off outlet, so can cool off cylinder vertically and circumferential.
Among the present invention, the cooling air that the suction system of above-mentioned air-cooled internal combustion engine is configured in centrifugal cooling fan blows out oral-lateral, and vent systems then is positioned at its opposite, and the guard shield exhaust port is opened on exhaust system and unifies side.So, not carrying out cooling air heat exchange, that remain on low temperature with cold sink contacts with suction system, the suction system that is heated by the transmission of heat of firing chamber is fully cooled off, keep higher charging efficiency, and the vent systems that is heated to high temperature is fully cooled off by focusing on exhaust port and being discharged to the outer cooling air of guard shield.
Below in conjunction with figure explanation embodiments of the invention.Wherein:
Fig. 1 is equipped with the small-sized two-wheeled motorcycle latter half part left view of air cooling internal combustion of the present invention.
Fig. 2 is the enlarged view of major component among Fig. 1.
Fig. 3 cuts the sectional arrangement drawing of cylinder guard shield, fan shroud open along III among Fig. 1-III line.
Fig. 4 is after taking off fan cover, Fig. 2 major component right elevation.
Fig. 5 along V among Fig. 3-V direction to view.
Fig. 6 along VI among Fig. 3-VI direction to view.
Fig. 7 be Fig. 5 the Y direction to view.
Fig. 8 is a view suitable with Fig. 4 in another embodiment of the present invention.
The view that is equivalent to Fig. 5 during Fig. 9 is embodiment illustrated in fig. 8.Symbolic representation among the figure: 1-small-sized two-wheeled motorcycle, 2-suspension power plant, 3-air-cooled internal combustion engine, 4-V-belt stepless speed changes devices, 5-output shaft, 6-trailing wheel, 7-suspension, 8-after-frame, 9-carriage, 10-connecting rod, 11-damping device, 12-left crankcase, 13-right crankcase, 14-cylinder body, 15-cylinder cap, 16-speed change gear lid, 17-right lid, 18-fan cover, 19,20 cylinder body guard shields, 21-bump, 22-bent axle, 23,24-cooling fan, 25-rotor, 26-centrifugal cooling fan, 27-coolant path, 28-partition wall, 29-space, 30-suction opening, 31-venetian blind, 32-intakeport, 33-sucking pipe, 34-outlet pipe, 35,36-opening, 37-exhaust port.
Below just one embodiment of the invention of representing of Fig. 7～Fig. 7 describe.
Small-sized two-wheeled motorcycle 1 (also can be that front-wheel is that 1 or 2, trailing wheel are the rotors 25 of the chimeric installation generator in 2 ground, again in fan cover 18, with rotor centrifugal cooling fan 26 is installed integratedly simultaneously.
As shown in Figure 4, when when the car body right side is seen, bent axle 22 and cooling fan 26 are along revolution clockwise, the first half of the cold air passage 27 in the fan cover 18, from the rear portion more forwards along clockwise direction through top, then form the vortex shape of getting over away from the center of bent axle 22, simultaneously, cover 17 upper edge swirl direction on the right side and form the space 29 identical with cold air passage 27 general shape with many places dividing plate 28 jaggy.
And, as shown in Figure 5, the cold sink 23 of cylinder body 14, with line Z serves as that boundary bends to V-arrangement shape shown in Figure 7, Z is the intersection of radiating fin 23 and OA face, and the OA face is the plane horizontal by 45 (Fig. 5 is from car body the place ahead, so about on the contrary) of pointing to the car body top from cylinder body 14 center lines.The cold sink top 23a of separatrix Z top as shown in Figure 3, to be 45 to the car body left front, the cold sink right side 23b of Z line below as shown in Figure 4, after tilting towards the car body inferoanterior with 45, gently crooked downwards, the bottom of this cold sink right side 23b is pointed to and the rectangular circumferencial direction of cylinder center line, and the cold sink left side 23c of cylinder body 14 left bottoms and cold sink bottom 23d point to circumferencial direction.
In addition, the cold sink 24 of cylinder cap 15 all points to the circumferencial direction vertical with cylinder center line on whole external peripheral surface.
The suction opening portion 30 of fan cover 18 forms the drum concentric with cooling fan 26, cooperates installation venetian blind 31 in suction opening portion 30.Individual tricycle or four-wheel wagon) suspension type power plant 2 that go up to install are mounted to one mutually by air-cooled internal combustion engine 3 and V-type Belt-type Adjustable-speed device 4 and constitute.The cylinder body 14 of internal-combustion engine 3, cylinder cap directed forward be direction on the upper side.Speed change gear from the left side of air cooling internal-combustion engine towards the rear.The output shaft 5 and the trailing wheel 6 of V-type Belt-type Adjustable-speed device 4 are mounted to one.The suspension bracket 7 of pairing left and right that is positioned at the crankcase top of air cooling internal-combustion engine 3 can be installed on the carriage 9 by connecting rod 10 with fluctuating, and carriage 9 is outstanding downwards from the after-frame 8 of small-sized two-wheeled motorcycle 1.Simultaneously, the rear portion of suspension power plant 2 is connected the rear portion of after-frame 8 by damping device 11.Along with the fluctuating on road surface in travelling, hanging power plant 2 can fluctuate.
In addition, as shown in Figure 3, hanging power plant 2 is made up of following each several part: the right side that the left crankcase 12 of the transmission case of double as air cooling internal-combustion engine 3 left crankcases and V-type band stepless speed changes devices 4, right crankcase 13, cylinder body 14, the cylinder head 15 that is installed in cylinder body 14 tops that left crankcase 12 and right crankcase 13 are combined into one, the speed change gear in left side that can be installed in to free demolition left crankcase 12 covered for 16 (as shown in Figure 1) and be installed in the right side of right crankcase 13 covers 17.The fan cover 18 that covers the centrifugal cooling fan 26 of aftermentioned can be contained in to free demolition on the right lid 17, and, the cylinder guard shield that separates up and down 19,20 that covers cylinder body 14, cylinder cap 15 is entrenched on the bump 21 of cylinder cap 15, but is contained in to demolition left crankcase 12, right crankcase 13, right lid 17 simultaneously again, reach on the fan cover 18.
On the external peripheral surface of cylinder body 14, cylinder cap 15, form a plurality of radiating fin 23,24 with certain interval, in right side lid 17, in the right-hand member of bent axle 22, one with it
Above cylinder cap 15, form in the intakeport 32, below cylinder cap 15, formed not shown relief opening.This intakeport 32 links to each other with sucking pipe 33, and relief opening links to each other with outlet pipe 34.The upper surface of cylinder guard shield 19 up, align with the position of intakeport 32 (referring to Fig. 3) and to form opening 35, below the lower surface of cylinder guard shield 20, form opening 30 with the aligned in position of relief opening, and as shown in Figure 5, on position, have exhaust port 37 than opening 36 more close left sides (because Fig. 5 is from the place ahead, so reversed left to right).
Because the embodiment that Fig. 1～Fig. 7 represents has above-mentioned formation, so revolution with bent axle 22, centrifugal cooling fan 26 is driven along clockwise direction as Fig. 2, Fig. 4, the cooling air that sucks from the suction port 30 of the fan cover 18 on car body right side in cooling air passway 27 from the bottom through the rear portion, top, shown in Fig. 4,5, be sent in the cylinder guard shield 19,20 along the direction of arrow.
And, the major part that flows to the cooling air of cylinder body 14 flows to more near cooling air passway 27 not near the cylinder body 14 external peripheral surface separatrix Z of end 27a, so, near this separatrix, cold sink 23 by bending, the major part of cooling air is diverted to the right flank of the top and cylinder body 14 of cylinder body 14, the edge is towards the cold sink top of cylinder cap 15 23a, right side 23b flows, so cooling air can not produce turbulent flow, flow smoothly, after near the mobile cooling air of the top cold sink 23a of cylinder body 14 flows along cold sink left side 23c, flow along cold sink bottom 23d again, it collaborates with the cooling air that flows along cold sink bottom 23d that flows to along cold sink right side 23b downwards, is discharged by exhaust port 37.
In addition, the cooling air that flows along cylinder guard shield 19,20 is behind the external peripheral surface that arrives cylinder cap 15, the cold sink 24 rectangular along direction and cylinder center line flows, wherein cooling air above cylinder body 14 and left surface below cylinder body 14, remaining cooling air is moving below cylinder body along cylinder body 14 right sides, and the two is discharged by exhaust port 37 together.
Like this, cooling air can not produce turbulent flow along whole cold sink 23,24, so, integrally cool off cylinder body 14 and cylinder cap 15 really effectively by cold sink 23,24.
In addition,, do not produce heat exchange,, charging efficiency is remained on high levels to remain on the cooling air cooling sucking pipe 33 of low temperature with cold sink 23,24 because sucking pipe 33 is configured in the place near path 27 terminal part 27a.
Also has cooling cylinder body in guard shield 19,20.Cooling, air discharging behind the cylinder cap 15 is blown on the outlet pipe 34 by exhaust port 37, will be heated to the outlet pipe 34 cooling air cooling thus of high temperature.
In the embodiment of Fig. 1～shown in Figure 7, because at centrifugal cooling fan 26 1 side configuration generators, though the cooling air passway 27 in the fan cover 18 along bent axle axially away from cylinder center line, but as Fig. 8～shown in Figure 9, when centrifugal cooling fan 26 and cold air passage 27 being set contiguously with cylinder body, do not make the cold sink 23 crooked forming V-shapes of cylinder body 14, and make it to form helical, the cold sink of cylinder cap 15 also can roughly form parallel spiral with it shape, in this embodiment, make whole cylinder body, the cooling air on the cylinder cap flows to Hand of spiral, can cool off cylinder body 14 comprehensively, cylinder cap 15.
Claims (6)
1. an air-cooled internal combustion engine (3), have many pieces of cold sinks (23,24), the centrifugal cooling fan (26) that is inlaid in bent axle (22) axle head that is arranged on cylinder body (14) and the cylinder cap (15), the guard shield (19,20) that covers this cylinder body (14), cylinder cap (15), centrifugal cooling fan (26), it is characterized in that: relative with the air in above-mentioned centrifugal cooling fan (26) blows to guard shield (19,20), groove is open-ended between the radiating fin that above-mentioned many pieces of cold sinks (23,24) are separated; Simultaneously, this cold sink (23,24) vertically and the flow direction of above-mentioned cooling air intersect inclination with small angle.
2. as the air-cooled internal combustion engine (3) of claim 1 record, it is characterized in that: the cold wind suction port of above-mentioned centrifugal cooling fan (26) is positioned at bent axle (22) outer end one side in cooling fan (26) outside; The cooling air blow-off outlet of above-mentioned centrifugal cooling fan (26) is positioned at the radial outside of cooling fan (26) periphery; And towards the direction parallel, and towards cylinder opening with cylinder-bore axis.
3. as the air-cooled internal combustion engine (3) of claim 2 record, it is characterized in that: the cooling air blow-off outlet of above-mentioned centrifugal cutter (26) is relative with the cylinder side, is positioned at the outside of departing from bent axle (22).
4. as the air-cooled internal combustion engine (3) of claim 1 record, it is characterized in that: above-mentioned cold sink (23,24) is that the boundary is bent to form V-arrangement with a separatrix, said separatrix is the straight line parallel with cylinder-bore axis on the cylinder external peripheral surface, and this straight line is positioned on the position that major part blew to of the cooling air that said fans cooling fan (26) blow-off outlet blows out.
5. as the air-cooled internal combustion engine (3) of claim 1 record, it is characterized in that: above-mentioned radiating fin (23,24) is the helical bending.
6. as the air-cooled internal combustion engine (3) of claim 1 record, it is characterized in that: the cooling air that the suction system of above-mentioned air-cooled internal combustion engine (3) is configured in centrifugal cooling fan (26) blows out oral-lateral; Vent systems then is positioned at its opposite; The exhaust port of above-mentioned guard shield (19,20) is opened on exhaust system and unifies side.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP069877/94 | 1994-03-15 | ||
| JP06987794A JP3439824B2 (en) | 1994-03-15 | 1994-03-15 | Air-cooled internal combustion engine |
| JP069877/1994 | 1994-03-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1112646A CN1112646A (en) | 1995-11-29 |
| CN1076077C true CN1076077C (en) | 2001-12-12 |
Family
ID=13415454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95102500A Expired - Fee Related CN1076077C (en) | 1994-03-15 | 1995-03-14 | Air cooled internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3439824B2 (en) |
| CN (1) | CN1076077C (en) |
| ES (1) | ES2117534B1 (en) |
| IT (1) | IT1279170B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240738B (en) * | 2007-02-05 | 2010-08-11 | 本田技研工业株式会社 | Forcible air cooling internal combustion engine |
| CN101377147B (en) * | 2007-08-27 | 2010-12-29 | 本田技研工业株式会社 | Forced air cooling type internal combustion 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 |
|---|---|---|---|---|
| AT414263B (en) * | 2004-06-24 | 2006-10-15 | Avl List Gmbh | Gardening tool with combustion engine like strimmer or brush cutter, comprising engine block made all of a piece |
| JP4549240B2 (en) * | 2005-06-27 | 2010-09-22 | 本田技研工業株式会社 | Small vehicle internal combustion engine |
| JP4568672B2 (en) * | 2005-10-18 | 2010-10-27 | 三菱重工業株式会社 | Cooling air guide cover for forced air cooling engine |
| DE102009008055A1 (en) * | 2009-02-09 | 2010-08-12 | Andreas Stihl Ag & Co. Kg | Hand-guided implement with an internal combustion engine |
| JP2013151885A (en) * | 2012-01-24 | 2013-08-08 | Yamaha Motor Co Ltd | Internal combustion engine and straddle-type vehicle provided with internal combustion engine |
| JP5924769B2 (en) * | 2012-06-22 | 2016-05-25 | 本田技研工業株式会社 | Cooling structure in forced air-cooled engine |
| CN105401999B (en) * | 2015-12-01 | 2018-08-17 | 力帆实业(集团)股份有限公司 | Motorcycle engine |
| WO2018030302A1 (en) | 2016-08-10 | 2018-02-15 | 本田技研工業株式会社 | Air-cooled internal combustion engine |
| CN108374713B (en) * | 2017-02-01 | 2022-07-22 | Tvs电机股份有限公司 | Cooling system for internal combustion engine |
| JP6892475B2 (en) * | 2019-03-29 | 2021-06-23 | 本田技研工業株式会社 | Internal combustion engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5010123A (en) * | 1973-05-25 | 1975-02-01 | ||
| JPH03117616A (en) * | 1989-09-29 | 1991-05-20 | Yamaha Motor Co Ltd | Forcedly air-cooled engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06100086B2 (en) * | 1984-10-04 | 1994-12-12 | ヤマハ発動機株式会社 | Forced air-cooled engine |
-
1994
- 1994-03-15 JP JP06987794A patent/JP3439824B2/en not_active Expired - Fee Related
-
1995
- 1995-03-14 IT IT95TO000196A patent/IT1279170B1/en active IP Right Grant
- 1995-03-14 CN CN95102500A patent/CN1076077C/en not_active Expired - Fee Related
- 1995-03-15 ES ES09500525A patent/ES2117534B1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5010123A (en) * | 1973-05-25 | 1975-02-01 | ||
| JPH03117616A (en) * | 1989-09-29 | 1991-05-20 | Yamaha Motor Co Ltd | Forcedly air-cooled engine |
Cited By (3)
| 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 |
| CN101240738B (en) * | 2007-02-05 | 2010-08-11 | 本田技研工业株式会社 | Forcible air cooling internal combustion engine |
| CN101377147B (en) * | 2007-08-27 | 2010-12-29 | 本田技研工业株式会社 | Forced air cooling type internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3439824B2 (en) | 2003-08-25 |
| ITTO950196A1 (en) | 1996-09-14 |
| ITTO950196A0 (en) | 1995-03-14 |
| ES2117534A1 (en) | 1998-08-01 |
| IT1279170B1 (en) | 1997-12-04 |
| JPH07253019A (en) | 1995-10-03 |
| CN1112646A (en) | 1995-11-29 |
| ES2117534B1 (en) | 1999-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1076077C (en) | Air cooled internal combustion engine | |
| CN1075869C (en) | Engine compartment structure of vehicle for introducing cool intake air | |
| CN1131936C (en) | Driven generator set for engine | |
| CN101424210B (en) | Radiator cover and straddle-type vehicle having the same | |
| JP5426134B2 (en) | Saddle riding vehicle | |
| CN1991147A (en) | Air cooling internal combustion engine with sensor for detecting ic engine state | |
| CN1779219A (en) | Motorcycle and engine for motorcycle | |
| CN101839167B (en) | Two stroke engine and the power tool being equipped with two stroke engine | |
| CN102889127A (en) | Internal combustion engine and straddle-type vehicle equipped with the engine | |
| US4998510A (en) | Cooling system for air cooled internal combustion engines | |
| CN1150467A (en) | Cooling device for heat exchanger | |
| CN1313725C (en) | Pullutant processing structure in atmosphere | |
| CN1039551C (en) | Shroud for forced cooling in internal | |
| CN1080380C (en) | Arrangement structure of engine sealing device and structure of engine | |
| CN1163367C (en) | Guard of forced air cooled internal combustion engine carried on vehicles | |
| CN1091717C (en) | Power unit for small vehicle with water-cooled internal combustion engine | |
| CN1242160C (en) | Radiator for vehicless | |
| PH12013000030A1 (en) | Internal combustion engine and straddle-type vehicle including the same | |
| CN1043331C (en) | Small vehickle with power apparatus of motor car | |
| US20040083988A1 (en) | Fan arrangement of a portable handheld work apparatus driven by an internal combustion engine | |
| JPH03222813A (en) | Air cooled engine for motor cycle | |
| CN1125917C (en) | Radiation hole for casing and metal mould for formation of casing | |
| CN1253652C (en) | Forced air-cooled engine for small motorcycle | |
| CN103867326A (en) | Forced air-cooling type internal combustion engine and saddled vehicle having the same | |
| EP4140792A1 (en) | Air inlet device for transmission system of a vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20011212 Termination date: 20120314 |