CN102536414A - Air cooling type engine - Google Patents
Air cooling type engine Download PDFInfo
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- CN102536414A CN102536414A CN2011104487978A CN201110448797A CN102536414A CN 102536414 A CN102536414 A CN 102536414A CN 2011104487978 A CN2011104487978 A CN 2011104487978A CN 201110448797 A CN201110448797 A CN 201110448797A CN 102536414 A CN102536414 A CN 102536414A
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Abstract
Provided is an air cooling type engine (115), comprising an engine body (140) composed of a crank case (141) having a shaft-supporting crankshaft (142), a cylinder block (143), and a cylinder head (147), a fan guard (161) which internally forms an air supply channel (162) by covering the periphery of the cylinder block (143), and a cooling fan (160) which inhales external air from the exterior of the fan guard (161) via the driving of the crankshaft (142) and supplies air to cylinder block (143) via the air supply channel (162). One part of the fan guard (161) is provided with inclined planes (176a) and (176b) leaning to the cylinder block (143).
Description
Technical field
The present invention relates to a kind of air cooled engine, relate in particular to a kind of cooling fan that uses and engine main body is forced the air cooled engine that cools off.
Background technique
In the past, known a kind of air cooled engine, it uses cooling fan that the engine main body that is covered by fan guard is forced cooling.Patent documentation 1 discloses following content: in the cooling unit of air-cooled internal combustion engine safety cover is installed, this safety cover the side of engine main body cover centrifugal fan around and have a internal surface to the side directed cooling air W of cylinder head.The top of the internal surface of patent documentation 1 disclosed safety cover is disposed with the projection that a plurality of cooling airs that on the cylinder head direction, extend in parallel are transferred stream usefulness integratedly.These projections can import cooling air equably in the path between each projection, can carry out rectification and guiding to cooling air in the cylinder head side.
Patent documentation 1: japanese kokai publication sho 56-65124 communique
Usually, cooling air flows along the internal surface of safety cover.Under the part of wanting to cool off (, being called cooling segment here) and situation that the internal surface of safety cover separates, because cooling air is difficult to directly contact with cooling segment, so can not cool off efficiently.Above-mentioned patent documentation 1 disclosed each projection can be carried out rectification to cooling air, still, must make the internal surface of safety cover and cooling segment leave the amount of the height of each projection at least, and cooling effectiveness is reduced.In addition, the also the same cooling efficiently of cylinder block with cylinder head.
Summary of the invention
The present invention In view of the foregoing makes, and its purpose is to provide a kind of air cooled engine of cooling effectiveness of the cylinder block that can improve engine main body.
The present invention provides a kind of air cooled engine, and this air cooled engine has: comprise that axle supports the engine main body of crankcase, cylinder block and the cylinder head of bent axle; Through cover said cylinder block around and form the fan guard of air-supply path in inside; And suck outside air from the outside of said fan guard through the driving of said bent axle, through the cooling fan of said air-supply path to said cylinder block air-supply, wherein, the part of said fan guard is provided with the plane of inclination to said cylinder block inclination.
Alternatively; In the said air cooled engine; Said plane of inclination is arranged at the upper wall of said fan guard and at least one side in the lower wall; At least one side in said upper wall and said lower wall, be formed with the outstanding top that is arranged on the fin on the said cylinder block through said plane of inclination immediate near portion, said near portion be positioned at the cylinder-bore axis that comprises said cylinder block a side that is equipped with said cooling fan vertical plane, on crankshaft direction.
Alternatively, in the said air cooled engine, said littler to the distance of the outer wall of said cylinder block with the distance on the top of said fin than the top of said fin near portion.
Alternatively, in the said air cooled engine, said plane of inclination is arranged at the upper wall and the lower wall of said fan guard, and the height of the said plane of inclination of aspect ratio the opposing party's of the said plane of inclination of the side's in said upper wall and the said lower wall wall wall is big.
Alternatively, in the said air cooled engine, the height of the said plane of inclination of the said lower wall of aspect ratio of the said plane of inclination of said upper wall is big.
The invention effect:
According to the present invention, because on fan guard, be provided with towards the plane of inclination of the cylinder block inclination of engine main body, so can improve the cooling effectiveness of cylinder block.
Description of drawings
Fig. 1 is the right side view of the scooter of expression mode of execution of the present invention.
Fig. 2 is the right side view of power unit.
Fig. 3 is a stereogram of seeing power unit from the place ahead, right side.
Fig. 4 is the I-I line sectional view of engine main body.
Fig. 5 is the II-II line sectional view of engine main body.
Fig. 6 A is a stereogram of seeing fan guard from the rear.
Fig. 6 B sees the stereogram of fan guard from the place ahead.
Fig. 7 is the III-III DNA mitochondrial DNA sectional view of engine main body.
Fig. 8 is the IV-IV line sectional view of engine main body.
Fig. 9 is the sectional view of the relation of expression fan guard and cylinder.
The reference numeral explanation:
100... motorcycle; 112... power unit; 113... crankcase; 115... air cooled engine; 140... engine main body; 141... crankcase; 142... bent axle; 143... cylinder block; 144... piston; 146... fin; 147... cylinder head; 148... firing chamber; 155... spark plug; 156... cylinder skull; 160... cooling fan; 161... fan guard; 162... air-supply path; 163... the first fan guard main body; 164... air suction inlet; 166... the second fan guard main body; 167... curved part; 168... encirclement portion; 169... sidewall; 170a... upper wall; 170b... lower wall; 171... left side wall; 172... right side wall; 176a, 176b... plane of inclination; 177a, 177b... are near portion; 178a, 178b... plane of inclination; 180a, 180b... par.
Embodiment
Below, the mode of execution that air cooled engine of the present invention is equipped on scooter is described.
At first, with reference to Fig. 1 the unitary construction of scooter 100 is described.Fig. 1 is the right side view of the scooter of this mode of execution of expression.In addition, among the figure shown in below, as required respectively with arrow Fr represent vehicle the front side, represent the rear side of vehicle with arrow Rr, represent the right side of vehicle with arrow R, represent the left side of vehicle with arrow L.
Scooter 100 (below be called motorcycle) constitutes body framing by steel or by a plurality of vehicle body frames that aluminum alloy material is processed.Specifically, Vehicular body front is equipped with steering head pipe 101.Substantial middle portion at steering head pipe 101 is provided with pipe 102 down to the downside extension of roughly retreading.Be provided with a pair of underframe 103 managing down near 102 the lower end to extend to rear side roughly.Roughly extend to upside roughly respectively and be provided with main frame 104 in the rear end at a pair of underframe 103.Upper end at a pair of main frame 104 is connected with after-frame 105 respectively.A pair of after-frame 105 extends setting along the whole rear side of car body to the upside that retreads.
As shown in Figure 1, steering head pipe 101 is supported with front fork 106 rotationally.Upper end edge left and right directions at front fork 106 is equipped with the handlebar 107 that is used for steering, is supported with front-wheel 108 rotationally in the lower end of front fork 106.Front-wheel 108 is covered by front mudguard 127.
In addition, the rear end of underframe 103 is set up and is formed with the carriage 109 that is used to support the power unit 112 that comprises air cooled engine.On carriage 109, be equipped with pillar 110 to rear side roughly.In addition, on pillar 110, be supported with shuttle-type power unit 112 through pivot 112.Power unit 112 can be that the center swings up and down with pivot 111.
Fig. 2 is the right side view of power unit.Fig. 3 is a stereogram of seeing power unit from the place ahead, right side.Power unit 112 makes the air cooled engine 115 and 116 blocking of belt automatic speed variator with crankcase 141 and cylinder assembly 114.
As shown in Figure 1, be supported with trailing wheel 117 rotationally at the rear portion of belt automatic speed variator 116.Trailing wheel 117 is covered by rear mudguard 128.Link by vibration damper 118 between belt automatic speed variator 116 and the after-frame 105.Vibration damper 118 absorbs swinging up and down of trailing wheel 117 and power unit 112.
Like Fig. 2 and shown in Figure 3, be equipped with air filter case 119 at the upside of belt automatic speed variator 116.Between air filter case 119 and cylinder assembly 114, be connected with sucking pipe 120.Be equipped with Carburetor 121 midway at sucking pipe 120.The gas that sucks from air cleaner box 119 generates the mixed gas with fuel through Carburetor 121, is inhaled in the cylinder assembly 114, and discharge from silencing apparatus 130 through outlet pipe 129 as discharging gas the burning back.
In addition, as shown in Figure 1, be provided with the seat 122 that supplies the driver to take a seat at the upside of power unit 112.Be supported with the pedal 123 that the driver who supplies to be seated at seat 122 places pin at the upside of underframe 103.Dispose the trunk 124 that to take in helmet etc. between power unit 112 and the seat 122.
The car body outward appearance forms outward appearance through the proper site that various car body covers is supported and are covered in vehicle body frame etc.In the front portion of car body, around the following pipe 102 of preceding leg protective cover 125 coverings.In addition, from the central part of car body to the rear portion, framework cover 126 cover main frames 104 and after-frame 105 around.Preceding leg protective cover 125 and framework cover 126 link through above-mentioned pedal 123 one.
Then, with reference to Fig. 2～Fig. 5 the structure of air cooled engine 115 is described.Fig. 4 is the sectional view that air cooled engine shown in Figure 2 is cut off at I-I line.In addition, Fig. 5 is the sectional view that air cooled engine shown in Figure 4 is cut off at II-II line.
As shown in Figure 4, air cooled engine 115 has engine main body 140, cooling fan 160 and fan guard 161.
At first, engine main body 140 is described.
In the engine main body 140 of this mode of execution, use the four-stroke single cylinder engine of OHV formula.As shown in Figure 5, engine main body 140 has crankcase 141, cylinder block 143, cylinder head 147 and cylinder skull 156.141 earth's axis free to rotate are supported with the bent axle 142 that sets along left and right directions in the crankcase.In crankcase 141, be provided with cylinder block 143 with the state extension that turns forward.Inside in cylinder block 143 is equipped with piston 144 slidably.Piston 144 is connected through connecting rod 145 with bent axle 142, and the to-and-fro motion of piston 144 converts the rotation of bent axle 142 into through connecting rod 145.
In addition, the outer wall of cylinder block 143 is formed with a plurality of fins 146 that on the direction vertical with the cylinder-bore axis Cy of cylinder block 143, stretch out.A plurality of fins 146 are formed on the total length of cylinder block 143 and on the cylinder head 147, respectively on the direction of cylinder-bore axis Cy across being partitioned into row setting.Fin 146 form the closer to after the firing chamber 148 stated big more, make radiating effect higher.
Through cylinder head 147 is combined with the top of cylinder block 143, form firing chamber 148 in inside.As shown in Figure 5, offer the suction port 149 that is communicated with firing chamber 148 on the top of cylinder head 147, this suction port 149 combines with above-mentioned sucking pipe 120.Be equipped with Aspirating valves 150 between suction port 149 and the firing chamber 148.
On the other hand, offer the relief opening 151 that is communicated with firing chamber 148 in the bottom of cylinder head 147, this relief opening 151 combines with above-mentioned outlet pipe 129.Between relief opening 151 and firing chamber 148, be equipped with outlet valve 152.
In addition, the switching of Aspirating valves 150 and outlet valve 152 is supported in camshaft 153 controls in the cylinder head 147 by rotating freely the earth's axis constantly.Camshaft 153 is connected with bent axle 142 through not shown cam chain, through bent axle 142 rotations.As shown in Figure 4, the left side of cam chain in cylinder block 143 is equipped on along in the cam chain passage 154 of cylinder-bore axis Cy direction formation.
In addition, as shown in Figure 4, on cylinder head 147, be equipped with spark plug 155, the top of this spark plug 155 is disposed in the firing chamber 148.The spark plug 155 of this mode of execution tilts to install from the right side of cylinder head 147, and its top is fixed to the center of pointing to firing chamber 148.155 pairs of mixed gass by piston 144 compressions of spark plug are lighted a fire, thereby make mixed gas burning and piston 144 is slided.Because combustion of mixed gas makes the cylinder head 147 and the cylinder block 143 that are formed with firing chamber 148 be in high temperature.
As shown in Figure 5, be combined with cylinder skull 156 at the top of cylinder head 147, this cylinder skull 156 covers the active valve mechanism that comprises above-mentioned Aspirating valves 150, outlet valve 152 and camshaft 153 etc.
Then, cooling fan 160 and fan guard 161 are described.
As shown in Figure 4, cooling fan 160 pivotal mounting are rotated with bent axle 142 in the right-hand member of bent axle 142 synchronously.
With reference to Fig. 4, Fig. 6 A and Fig. 6 B, the shape of fan guard is described.Fig. 6 A is a stereogram of seeing fan guard from the rear, and Fig. 6 B is a stereogram of seeing fan guard from the place ahead.In addition, fan 160 shown in Fig. 6 A is with the configuration of clear and definite fan guard 161 with cooling fan 160.
The first fan guard main body 163 is formed with to the position relative with cooling fan 160, promptly to the air suction inlet 164 of the right openings of fan guard 161.Through the rotation of cooling fan 160, outside air is inhaled into the inside of fan guard 161 through air suction inlet 164.In addition, setting is provided with annular wall 165 around air suction inlet 164.
On the other hand, the second fan guard main body 166 is formed by curved part 167 and encirclement portion 168, and curved part 167 covers the space that right flank and cooling fan 160 by cylinder block 143 surround, around encirclement portion 168 coating gas cylinder bodies 143 and the cylinder head 147.As shown in Figure 4, the sidewall 169 of curved part 167 bends to laterally to cylinder head 147 from the first fan guard main body 163 and expands.
In addition, shown in Fig. 6 A and Fig. 6 B, in curved part 167 and encirclement portion 168, be formed with upper wall 170a and lower wall 170b.Upper wall 170a and lower wall 170b are formed up to the left side wall 171 of encirclement portion 168 respectively from sidewall 169 crooked and formation continuously always.
In addition, the fan guard 161 of this mode of execution forms the shape of cooling air cylinder body 143 efficiently.Below, with reference to Fig. 7～Fig. 8 the more concrete shape of fan guard 161 is described.Fig. 7 cuts off in III shown in Figure 4-III line, the perspective, cut-away view of seeing from the arrow A direction.Fig. 8 is the sectional view that cuts off at IV shown in Figure 4-IV line.In Fig. 7 and Fig. 8, represent to comprise the imaginary plane of crankshaft center line Cr and cylinder-bore axis Cy with plane F1.In addition, in Fig. 8, represent vertical plane through cylinder-bore axis Cy with vertical plane F2.
At first, like Fig. 7 and shown in Figure 8, at the curved part 167 of the second fan guard main body 166, form from plane F1 to the distance H 1 of the extreme higher position of upper wall 170a than F1 is big to the distance h 1 of the extreme lower position of lower wall 170b from the plane.That is, guarantee in curved part 167 that the path volume ratio lower wall 170b side of the air-supply path 162 of upper wall 170a side is more.
In addition, upper wall 170a and lower wall 170b are formed with from sidewall 169 sides the closer to encirclement portion 168 respectively, are plane of inclination 176a, the 176b that cylinder block 143 tilts to approaching each other direction more.Plane of inclination 176a, 176b tilt with respect to surperficial F1.Therefore, upper wall 170a and lower wall 170b be the closer to cylinder block 143, the internal face of upper wall 170a and lower wall 170b, and the top of the fin 146 of cylinder block 143 between distance more little.
Here, upper wall 170a upward is formed with feasible immediate near the 177a of portion on distance with fin 146 tops through plane of inclination 176a.Be positioned at the right side of vertical plane F2 shown in Figure 8, promptly dispose a side of spark plug 155 or cooling fan 160 near the 177a of portion.In addition, as shown in Figure 5, near the 177a of portion form along the whole total length of cylinder block 143 and with the straight line L1 almost parallel on the top that is connected fin 146.
Likewise, like Fig. 7 and shown in Figure 8, lower wall 170b upward is formed with feasible immediate near the 177b of portion on distance with fin 146 tops through plane of inclination 176b.Be positioned at the right side of vertical plane F2 shown in Figure 8, promptly dispose a side of spark plug 155 near the 177b of portion.In addition, as shown in Figure 5, near the 177b of portion form along than the slightly short distance of the total length of cylinder block 143 and with the straight line l1 almost parallel on the top that is connected fin 146.
Fig. 9 is the peripheral enlarged view of cylinder block shown in Figure 5.In addition, in Fig. 9, the air supply direction of air is the paper Vertical direction, flows to surface side from the paper back side.
, form near the 177a of portion from shorter to the distance B 1 on the top of fin 146 than the distance B 2 of the upper wall surface 143a from each fin 146 to cylinder block 143 near the 177a of portion.In Fig. 9, be depicted as with near the average height of each relative fin 146 of the 177a of portion be straight line L2, near the 177a of portion to the distance of straight line L2 be D1, distance from the distance of the upper wall surface 143a of cylinder block 143 to straight line L2 is D2.Therefore, near the 177a of portion, form the distance on the top that reduces fan guard 161 and fin 146, make 146 mobile more air of each fin.
Likewise,, form near the 177b of portion from each fin 146 to cylinder block 143 apart from d2 near the lacking apart from the lower wall surface 143b of d1 ratio of the 177b of portion to the top of fin 146.In Fig. 9, be depicted as with near the average height of each relative fin 146 of the 177b of portion be straight line l2, near the 177b of portion to the distance of straight line l2 be d1, distance from the distance of the upper wall surface 143b of cylinder block 143 to straight line l2 is d2.Therefore, near the 177b of portion, form the distance on the top that reduces fan guard 161 and fin 146, make 146 mobile more air of each fin.
In addition, as shown in Figure 8, near the 177a of portion and be roughly the same distance near the 177b of portion to the distance on the top of fin 146.In addition, as stated, form from plane F1 to the distance H 1 of the extreme higher position of upper wall 170a than F1 is big to the distance h 1 of the extreme lower position of lower wall 170b from the plane.Therefore, near the 177a of portion to the height of the extreme higher position of upper wall 170a, be the height H 2 of plane of inclination 176a form than near the 177b of portion to the height of the extreme lower position of lower wall 170b, be that the height h2 of plane of inclination 176b is big.
Then, upper wall 170a and lower wall 170b are formed with respectively from getting over plane of inclination 178a, 178b to separated direction inclination near the 177a of portion, 177b the closer to vertical plane F2.Plane of inclination 178a, 178b tilt with respect to plane F1.Therefore, at upper wall 170a and lower wall 170b, near the 177a of portion, 177b the closer to vertical surface F2, the internal face of upper wall 170a and lower wall 170b, and the top of the fin 146 of cylinder block 143 between distance big more.
In addition, upper wall 170a and lower wall 170b are formed with from vertical surface F2 to left side wall 171 tabular surface 180a, the 180b parallel with plane F1.In addition, as shown in Figure 8, from the plane F1 to the distance of the tabular surface 180b of lower wall 170b be with above-mentioned F1 from the plane to the identical distance of the distance h of the extreme lower position of lower wall 170b 1.
Here, as shown in Figure 8, the distance on 143 fin 146 tops is D3 from tabular surface 180a to cylinder block, from above-mentioned be D4 near the 177a of portion to the distance on fin 146 tops.Because tabular surface 180a is from forming via plane of inclination 178a near the 177a of portion, so distance B 3 is bigger than distance B 4.In this mode of execution, distance B 3 is than 2 times of distance B 4 also big distances.
In addition, the distance on 143 fin 146 tops is d3 from tabular surface 180b to cylinder block, from above-mentioned be d4 near the 177b of portion to the distance on fin 146 tops of cylinder block 143.Because tabular surface 180b is from forming via plane of inclination 178b near the 177b of portion, so big apart from d4 apart from the d3 ratio.In this mode of execution, be than apart from 2 times of d4 also big distances apart from d3.
Then, the effect of using the fan guard 161 cooling air cylinder bodies 143 that as above-mentioned, constitute is described.
At first, when driving the bent axle 142 of engine main body 140, cooling fan 160 rotates with bent axle 142 synchronously.Cooling fan 160 to the arrow B direction shown in Fig. 6 A, promptly when right flank is seen motorcycle 100 to right rotation.
As shown in Figure 4, through the rotation of cooling fan 160, outside air is inhaled into the air-supply path 162 in the fan guard 161 through air suction inlet 164.Be inhaled into air in the fan guard 161 along the inwall of the curved part 167 of the first fan guard main body 163, mainly flow to the encirclement portion 168 of the second fan guard main body 166 here along sidewall 169, upper wall 170a and the lower wall 170b of curved part 167.
The fin 146 that is provided with near the projection to the right of the outstanding to the right fin 146 that is provided with of cylinder head 147 and cylinder head 147 in sidewall 169 flow air of curved part 167 and the cylinder block 143 contacts.Because this part is near firing chamber 148 and be positioned at a side that disposes spark plug 155, so be in higher temperature.Therefore, cool off, can improve cooling effectiveness through the air and the part of high temperature are more directly contacted.To right side of cylinder head 147 etc. carry out being centered around after the cooled air cylinder head 147 around, integral body such as the top of cylinder head 147, bottom, left side are cooled off.
On the other hand, as shown in Figure 8, be guided near cylinder block 143 through plane of inclination 176a, 176b respectively along upper wall 170a and lower wall 170b flow air.Arrive respectively near the 177a of portion, 177b by the air of plane of inclination 176a, 176b guiding.Because near the 177a of portion, 177b, fan guard 161 is the most approaching on distance with fin 146 tops as stated, so more air passes through between each fin 146.Through more air is passed through between fin 146, make air take away more heat thus from each fin 146, therefore, can improve the cooling effectiveness of cylinder block 143.Particularly, cylinder block 143 near being the side that is equipped with spark plug 155 of vertical plane F2 near the part of the 177a of portion, 177b, be a side of high temperature more.Therefore, cool off, can improve the cooling effectiveness of cylinder block 143 through air is directly contacted with the part of high temperature more.
In addition, as stated, at curved part 167, the height H 2 of plane of inclination 176a that forms upper wall 170a is bigger than the height h2 of the plane of inclination 176b of lower wall 170b, can guarantee the air-supply volume of upper wall 170a side.In addition, through making cooling fan 160, thereby make towards the amount of the air of upper wall 170a side than many towards the amount of the air of lower wall 170b side also to arrow B direction shown in Figure 6 rotation.That is,, many towards the air of encirclement portion 168 towards the air ratio of encirclement portion 168 along lower wall 170b along upper wall 170a at curved part 167.Therefore, the upside of cylinder block 143 is further cooled off than downside.Because the upside of cylinder block 143 is near sucking pipe 120, so, through the upside of cooling air cylinder body 143, can cool off air-breathing in the sucking pipe 120, and improve the air-breathing charging efficiency in the firing chamber 148.
Then, be directed to through plane of inclination 178a, 178b respectively at the air that passes through near the 177a of portion, 177b and leave cylinder block 143.Here, because form greatlyyer, so, can pass through near the 177a of portion, 177b to can not being hindered near carrying out flowing of cooled air near the fin 146 of the 177a of portion, 177b near the air-supply path 162 in the left side of the 177a of portion, 177b.
Air passing through near the 177a of portion, 177b further cools off the top and the bottom of cylinder block 143, afterwards, around the left side of going into cylinder block 143 cylinder block 143 integral body is cooled off.
Then, cylinder block 143 and cylinder head 147 are carried out cooled air and be discharged to the outside from above-mentioned inserting hole 173,174,175 etc.
Like this, according to this mode of execution, because on fan guard, be formed with the plane of inclination 176a, the 176b that tilt to cylinder block 143, so cooling air and cylinder block 143 in the fan guard 161, specifically the fin 146 with cylinder block 143 flows contiguously.Therefore, can improve the cooling effectiveness of cylinder block 143 further.In addition, through improving the cooling effectiveness of cylinder block 143, also have the durability that improves engine main body 140, through keeping gap between piston 144 and the cylinder block 143 to reduce slip sound and reducing the effects of deriving such as generation of waste gas.
Above, use above-mentioned mode of execution to describe the present invention, still, the present invention is not limited only to above-mentioned mode of execution, can also change within the scope of the invention etc.For example; In this mode of execution, the situation that all is provided with plane of inclination 178a, 178b for upper wall 170a and lower wall 170b at fan guard 161 is illustrated, yet; Be not limited to this situation, can also be arranged at least one side among upper wall 170a and the lower wall 170b.In addition; In this mode of execution; Be illustrated for the height H 2 of the plane of inclination 176a of upper wall 170a the big situation of height h2 than the plane of inclination 176b of lower wall 170b; But, being not limited to this situation, the height h2 of plane of inclination 176b that can also form lower wall 170b is bigger than the height H 2 of the plane of inclination 176a of upper wall 170a.
In addition, in this mode of execution, the situation that air cooled engine 115 is carried on the scooter is illustrated, but is not limited to this situation, can also carry on other vehicles.
Claims (5)
1. air cooled engine has:
Comprise that axle supports the engine main body of crankcase, cylinder block and the cylinder head of bent axle;
Through cover said cylinder block around and form the fan guard of air-supply path in inside; And
The cooling fan that sucks outside air through the driving of said bent axle from the outside of said fan guard, blows to said cylinder block through said air-supply path,
Said air cooled engine is characterised in that the part of said fan guard is provided with the plane of inclination to said cylinder block inclination.
2. air cooled engine according to claim 1 is characterized in that,
Said plane of inclination is arranged at the upper wall of said fan guard and at least one side in the lower wall,
At least one side in said upper wall and said lower wall, be formed with the outstanding top that is arranged on the fin on the said cylinder block through said plane of inclination immediate near portion,
Said near portion be positioned at the cylinder-bore axis that comprises said cylinder block a side that is equipped with said cooling fan vertical plane, on crankshaft direction.
3. air cooled engine according to claim 2 is characterized in that, and is said littler to the distance of the outer wall of said cylinder block than the top of said fin with the distance on the top of said fin near portion.
4. according to each described air cooled engine in the claim 1～3, it is characterized in that,
Said plane of inclination is arranged at the upper wall and the lower wall of said fan guard,
The height of the said plane of inclination of aspect ratio the opposing party's of the said plane of inclination of the side's in said upper wall and the said lower wall wall wall is big.
5. air cooled engine according to claim 4 is characterized in that, the height of the said plane of inclination of the said lower wall of aspect ratio of the said plane of inclination of said upper wall is big.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-293491 | 2010-12-28 | ||
| JP2010293491A JP5668471B2 (en) | 2010-12-28 | 2010-12-28 | Air-cooled engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536414A true CN102536414A (en) | 2012-07-04 |
| CN102536414B CN102536414B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110448797.8A Expired - Fee Related CN102536414B (en) | 2010-12-28 | 2011-12-28 | Air cooling type engine |
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| Country | Link |
|---|---|
| JP (1) | JP5668471B2 (en) |
| CN (1) | CN102536414B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143409A (en) * | 2017-07-03 | 2017-09-08 | 重庆隆鑫发动机有限公司 | Wind gathering plate and its installation constitution |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6237319B2 (en) * | 2014-02-20 | 2017-11-29 | スズキ株式会社 | Engine cooling structure |
| CN105401999B (en) * | 2015-12-01 | 2018-08-17 | 力帆实业(集团)股份有限公司 | Motorcycle engine |
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| JPH02291417A (en) * | 1990-04-03 | 1990-12-03 | Honda Motor Co Ltd | Air-cooled engine |
| CN1117114A (en) * | 1994-06-11 | 1996-02-21 | 本田技研工业株式会社 | Forced air cooling internal combustion engine |
| CN1117451A (en) * | 1994-03-15 | 1996-02-28 | 本田技研工业株式会社 | Small vehickle with power apparatus of motor car |
| JP2008133747A (en) * | 2006-11-27 | 2008-06-12 | Honda Motor Co Ltd | Forced-air-cooled engine |
| US20090293821A1 (en) * | 2008-05-30 | 2009-12-03 | Keiichi Nakamizo | Air-cooled v-type combustion engine |
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| JPS5853815U (en) * | 1981-10-07 | 1983-04-12 | 本田技研工業株式会社 | Forced air-cooled OHV engine cooling system |
| JP4208341B2 (en) * | 1999-04-28 | 2009-01-14 | 本田技研工業株式会社 | A shroud of a forced air-cooled internal combustion engine mounted on a vehicle |
| JP2001123833A (en) * | 1999-10-26 | 2001-05-08 | Yamaha Motor Co Ltd | Forced-air-cooled cylinder injection engine |
| JP4776561B2 (en) * | 2007-02-13 | 2011-09-21 | 本田技研工業株式会社 | Forced air-cooled internal combustion engine |
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- 2010-12-28 JP JP2010293491A patent/JP5668471B2/en active Active
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- 2011-12-28 CN CN201110448797.8A patent/CN102536414B/en not_active Expired - Fee Related
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| JPH02291417A (en) * | 1990-04-03 | 1990-12-03 | Honda Motor Co Ltd | Air-cooled engine |
| CN1117451A (en) * | 1994-03-15 | 1996-02-28 | 本田技研工业株式会社 | Small vehickle with power apparatus of motor car |
| CN1117114A (en) * | 1994-06-11 | 1996-02-21 | 本田技研工业株式会社 | Forced air cooling internal combustion engine |
| JP2008133747A (en) * | 2006-11-27 | 2008-06-12 | Honda Motor Co Ltd | Forced-air-cooled engine |
| US20090293821A1 (en) * | 2008-05-30 | 2009-12-03 | Keiichi Nakamizo | Air-cooled v-type combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143409A (en) * | 2017-07-03 | 2017-09-08 | 重庆隆鑫发动机有限公司 | Wind gathering plate and its installation constitution |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5668471B2 (en) | 2015-02-12 |
| CN102536414B (en) | 2015-04-22 |
| JP2012140883A (en) | 2012-07-26 |
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