CN1975142A - Internal combustion engine and two-wheeled motorcycle - Google Patents
Internal combustion engine and two-wheeled motorcycle Download PDFInfo
- Publication number
- CN1975142A CN1975142A CN 200610149258 CN200610149258A CN1975142A CN 1975142 A CN1975142 A CN 1975142A CN 200610149258 CN200610149258 CN 200610149258 CN 200610149258 A CN200610149258 A CN 200610149258A CN 1975142 A CN1975142 A CN 1975142A
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- Prior art keywords
- combustion engine
- internal
- longitudinal wall
- valve mechanism
- mechanism cover
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Abstract
The invention provides an internal combustion engine with good sound insulation effect and cooling effect. The air-cooling combustion engine 50 is formed by: using a cylinder cover 53 for blocking the upper part of the cylinder body 52 to form a combustion chamber therein, and installing a cylinder cover shell 54 upon the cylinder cover 53, wherein, the peripheral of the cylinder cover shell 54 has a dual constitution which is constructed by a first longitudinal wall 87 and a second longitudinal wall 88 which are connected with each other by a rib and between which there is a air inlet hole 98 for opening underside, and a guiding part arranged on the cylinder cover shell 54 for guiding the air which feeds into air inlet hole to flow towards the spark plug.
Description
Technical field
The present invention relates to a kind of internal-combustion engine and the two-wheeled motorcycle that is mounted with this internal-combustion engine.
Background technique
The cooling of internal-combustion engine is extremely important, in the internal-combustion engine of air-cooling type, cooling fin is set on valve mechanism cover has improved cooling effect (for example: with reference to Patent Document 1).
Patent Document 1: open clear 63-196451 communique in fact
But the cooling fin of above-mentioned valve mechanism cover has only the function as heat liberation board, does not possess other function.
Because therefore the cooling fin of above-mentioned valve mechanism cover and the cooling fin parallel configuration of cylinder block, improve cooling effect by increase heat release area and can only reach extremely limited effect.For example: in the internal-combustion engine, the cooling of the firing chamber periphery of spark plug assembly department is extremely important, still, just cooling fin is set on valve mechanism cover simply at present, thereby can not cools off above-mentioned privileged site energetically.
Moreover, on the valve mechanism cover of present band cooling fin, the annex and the valve mechanism cover split that will have cooling fin form, because on the valve mechanism cover that the seal washer of the rubber system that this annex is used by anti-resonance is installed, therefore, it is many to be not only number of components, and number of assembling steps is also many, causes cost to improve.
Summary of the invention
Therefore, the invention provides the internal-combustion engine and the two-wheeled motorcycle that is mounted with this internal-combustion engine of a kind of soundproof effect and cooling effect excellence.
For addressing the above problem, first aspect present invention provides a kind of air-cooled internal combustion engine (for example: the motor 50 among the aftermentioned embodiment), (for example: the upper end cylinder block 52 among the aftermentioned embodiment) with cylinder head (for example: the cylinder head 53 among the aftermentioned embodiment) obturation with cylinder block for it, be formed with the firing chamber in inside (for example: the firing chamber 63 among the aftermentioned embodiment), valve mechanism cover is installed (for example: the valve mechanism cover 54 among the aftermentioned embodiment) on above-mentioned cylinder head, it is characterized in that the peripheral part of above-mentioned valve mechanism cover is (for example: first longitudinal wall 87 among the aftermentioned embodiment to have dual longitudinal wall, second longitudinal wall 88) duplex.
According to this formation,, therefore can improve soundproof effect because the peripheral part of valve mechanism cover becomes duplex.In addition, the heat release area of valve mechanism cover increases, and can improve cooling effect.
Second aspect present invention provides internal-combustion engine on the basis of first aspect, it is characterized in that, above-mentioned dual longitudinal wall by stiffening rib (for example: the stiffening rib 94 among the aftermentioned embodiment) interconnect.
According to this formation,, therefore, can make longitudinal wall become thin-walled, and can realize the lightweight of valve mechanism cover owing to can guarantee duplex intensity partly by stiffening rib.
Third aspect present invention provides internal-combustion engine on the basis of first aspect, it is characterized in that, the downside between the above-mentioned dual longitudinal wall is open, the upside obturation.
According to this formation, can realize the further lightweight of valve mechanism cover.In addition, owing to air can be come in and gone out between dual longitudinal wall, so cooling effect improves.
Fourth aspect present invention is on the basis of the third aspect, internal-combustion engine is provided, it is characterized in that, (for example: the top extension ignition spark plug 64 among the aftermentioned embodiment) (for example: the recess 91 among the aftermentioned embodiment) upwards has recess to the spark plug of described valve mechanism cover on being installed on above-mentioned cylinder head, simultaneously, the wind that travels that has between the above-mentioned dual longitudinal wall of guiding inflow (for example: the inaccessible wall 92F among the aftermentioned embodiment) makes its guide portion that points to spark plug 64 inflows.
According to this formation, it is distinguished and admirable to spark plug to travel, and can cool off the firing chamber of spark plug assembly department periphery effectively.
Fifth aspect present invention provides a kind of two-wheeled motorcycle, it is characterized in that, loads the described internal-combustion engine of fourth aspect present invention, with the said cylinder body of this internal-combustion engine to the configuration of leaning forward of vehicle body the place ahead.
According to this formation, stream can cool off the internal-combustion engine of two-wheeled motorcycle effectively as the easy contact sparking plug of the wind that travels between the longitudinal wall of valve mechanism cover.
According to a first aspect of the invention as can be known, can improve the soundproof effect and the cooling effect of internal-combustion engine.In addition, can realize the raising of commodity of the outward appearance of valve mechanism cover, and because structure is uncomplicated, thereby can improve the cooling performance around the spark plug.
According to the second aspect present invention or the third aspect, can make the valve mechanism cover lightweight, and can realize the lightweight of internal-combustion engine.Moreover according to third aspect present invention, cooling effect further improves.
According to fourth aspect present invention, can cool off the firing chamber of spark plug assembly department periphery effectively.
According to fifth aspect present invention, can cool off the internal-combustion engine of two-wheeled motorcycle effectively.
Description of drawings
Fig. 1 is the side view of two-wheeled motorcycle of the present invention;
Fig. 2 is the right side view that expression is decided what is right and what is wrong the part of internal-combustion engine of the present invention to represent;
Fig. 3 be used to illustrate above-mentioned internal combustion engine drive vehicle distinguished and admirable to right side view;
Fig. 4 is the sectional drawing of above-mentioned internal-combustion engine;
Fig. 5 is the sectional drawing that expression launches the speed changing portion of above-mentioned internal-combustion engine expression;
Fig. 6 is the bottom view of the valve mechanism cover of above-mentioned internal-combustion engine.
Among the figure: 1 two-wheeled motorcycle, 50 motors (internal-combustion engine), 52 cylinder block, 53 cylinder head, 54 valve mechanism cover, 63 firing chambers, 64 spark plugs, 87 first longitudinal walls, 88 second longitudinal walls, 91 recesses, the inaccessible wall (guide portion) of 92F, 94 stiffening ribs.
Embodiment
Describe with reference to the accompanying drawing of Fig. 1～Fig. 6 with regard to the embodiment of internal-combustion engine of the present invention and two-wheeled motorcycle below.In addition, in the following description all around towards short of special record, then the direction on the vehicle is identical.In addition, arrow FR represents that vehicle front, arrow LH represent that vehicle left, RH represent that vehicle is right-hand among the figure.
As shown in Figure 1, the pairing left and right front fork 3 of the axle supporting front-wheel 2 of two-wheeled motorcycle (vehicle) 1 can turn to the ground pivot suspension to be located at the head pipe 6 of body shell 5 front ends via deflecting bar 4.In addition, rocking arm 8 its front ends of axle supporting wheels 7 swingably pivot suspension be located at the pivot 9 of the substantial middle of body shell 5.Body shell 5, formation based on from the beginning manage 6 top rearward extend after the so-called rhombus of the crooked body frame 11 that forms downwards again, the pivot plate 12 that is installed in both sides, body frame 11 underpart and the underpart of from the beginning managing the following pipe 13 that extends to the oblique rear lower side 6 bottoms are connected with the front and back of the crankcase 51 of the motor that is loaded in vehicle body central authorities (internal-combustion engine) 50 respectively, motor 50 via under manage 13 and pivot plate 12 be lifted on body shell 5.
The top rear side of body frame 11 combines with the front end of the seat support 16 that rearward extends, the intermediate portion of seat support 16 with from pivot 9 nearby on tiltedly the upper end portion of the auxiliary stand 17 of rear extension combine.Rear at body frame 11 is equipped with rear shock absorber 18 with the posture that leans forward, and the upper end portion of rear shock absorber 18 is connected with body frame 11, and the underpart is connected with rocking arm 8.
In the left side of trailing wheel 7 back sprocket wheel 19 is installed, volume hangs with Transmitted chains 22 on the drive sprocket 21 that sets on the left of this back sprocket wheel 19 and the rear portion at motor 50, the driving force of motor 50 can be passed to trailing wheel 7.
Above motor 50, set fuel tank 24, set seat 25 at the rear of fuel tank 24.
On the top of deflecting bar 4 directional lever 32 is installed, front mudguard 33 is installed at the intermediate portion of front fork 3.In addition, on deflecting bar 4, Headlamps 34, front shroud 37 are installed via not shown supporting rod.
Central part both sides at body shell 5 are equipped with side cover 38, at the rear portion of body shell 5 back cover 39 are installed, and set the free rear mudguard 31 that specified gap covers the top of trailing wheel 7 of opening in the inboard of back cover 39.
As Fig. 2, Fig. 4, shown in Figure 5, motor 50 has as main composition: crankcase 51, cylinder block 52, cylinder head 53, valve mechanism cover 54, piston 55, bent axle 56, connecting rod 57 are set to the posture that leans forward a little to vehicle body the place ahead with being arranged on cylinder block 52 on the crankcase 51.
That holds in cylinder block 52 as shown in Figure 5, can be connected by connecting rod 57 with the bent axle that rotates freely 56 that is provided with in crankcase 51 to the piston 55 that its axle direction slides.The to-and-fro motion of piston 55 is transformed to rotatablely moving of bent axle 56.
But the main shaft 60 of bent axle 56 and speed-changing drum speed changer 59 is via driving gear 27, driven gear 28, be connected to clutch mechanism 58 clutches, and main shaft 60 is connected with jack shaft 62 via speed change gear 61, the rotation of bent axle 56 can be sent to jack shaft 62.In addition, shown in Figure 5 is with one group of speed change gear 61 of engagement is representative, omits the speed change gear of other group.Above-mentioned drive sprocket 21 is installed in end at jack shaft 62, and as mentioned above, the rotation of drive sprocket 21 sends back sprocket wheel 19 to by Transmitted chains 22.
Upside in cylinder block 52 is equipped with cylinder head 53, is surrounded by cylinder head 53 and piston 55 and forms firing chamber 63.Be provided with spark plug assembly department 68 in cylinder head 53 its right side substantial middle, on spark plug assembly department 68, be screwed into spark plug 64 from oblique upper to the firing chamber, the electrode of spark plug 64 front ends is outstanding in firing chamber 63.
As Fig. 2, shown in Figure 3, on cylinder head 53, be arranged on the relief opening 65 of vehicle body front side, at the intakeport 66 of vehicle body rear side, be communicated with firing chamber 63 respectively, the opening that faces firing chamber 63 can open and close by outlet valve, Aspirating valves (omitting all diagrams) respectively.In addition, as shown in Figure 1, relief opening 65 is connected with the baffler 44 that is provided in the body tail right side via outlet pipe 43, and intakeport 66 is connected with air-strainer 46 via Carburetor 45.
Above-mentioned outlet valve and Aspirating valves are pushed to closing the valve direction by valve spring (omitting diagram), resist above-mentioned valve spring by the valve mechanism 70 (with reference to Fig. 5) that is provided with above cylinder head 53, thereby can regularly drive valve.In addition, because valve mechanism 70 is well-known technology, so omit its detailed description, it is by cam, camshaft 71, hand pump oil arm (omitting diagram), tappet formations such as (omitting diagram).
Central upper in cylinder head 53 is fixed with retainer 67, the bearing 72,72 of the camshaft 71,71 of rotatably mounted valve mechanism 70 is by cylinder head 53 and retainer 67 clampings, hang camshaft chain 81 at the fixing cam sprocket wheel 73 of an end of camshaft 71 with in cam drive fixing on the bent axle 56 with volume on the sprocket wheel 80, it is with bent axle 56 interlocks and rotate drive cam shaft 71.
As shown in Figure 4, cylinder head 53 and cylinder block 52 are twisted the bolt 41 that closes by connecting them with crankcase 51 and are fastened on the crankcase 51, and retainer 67 is by being fixed on the cylinder head 53 with the nut 43 that the crankcase 51 stubborn stud bolts 42 that close tighten perforation retainer 67 in perforation cylinder head 53 and cylinder block 52.
The outstanding cooling fin 82 that extends to peripheral direction that is provided with of periphery in cylinder block 52.The also outstanding cooling fin 83 that extends to peripheral direction that is provided with of periphery in cylinder head 53 makes it not disturb relief opening 65, intakeport 66, spark plug assembly department 68.
The outer edge forms sealing gasket face 84 on cylinder head 53, and the sealing gasket 90 via the rubber manufacturing on sealing pad face 84 is provided with valve mechanism cover 54.
Fig. 6 is the bottom view of the valve mechanism cover 54 seen from below, and valve mechanism cover 54 is overlooked in the form of a substantially rectangular, is formed with the valve cage 85 that holds above-mentioned valve mechanism 70 in the central part inboard.As Fig. 2, Fig. 4, shown in Figure 5, valve cage 85 extends first longitudinal wall 87 of the ring-type that is provided with downwards around forming by the sky board 86 of valve mechanism cover 54 with from sky board 86.Moreover valve mechanism cover 54 has that the outer periphery with day board 86 are connected in the upper end of second longitudinal wall, 88, the second longitudinal walls 88 in the outside of first longitudinal wall 87.That is, the peripheral part of valve mechanism cover 54 is the dual structures with dual longitudinal wall 87,88.
And the bottom surface of first longitudinal wall 87 clips sealing gasket 90 and is positioned on the sealing gasket face 84 of cylinder head 53.In the bottom surface of first longitudinal wall 87 sealing gasket telescoping groove 89 is set, the protuberance that the top of chimeric sealing gasket 90 forms in the sealing pad telescoping groove 89.As Fig. 2, Fig. 4, shown in Figure 5, the bottom surface of second longitudinal wall 88 exceeds some positions than the bottom surface of first longitudinal wall 87.
Be formed with cavity 98 between first longitudinal wall 87 and second longitudinal wall 88, the upside in this cavity 98 is by day board 86 obturations, but downside is open, and air is is freely come in and gone out.Be connected by each a pair of stiffening rib 94 with left side central authorities at four jiaos when in addition, first longitudinal wall 87 is overlooked with second longitudinal wall 88.By stiffening rib 94 is set, can guarantee the intensity stipulated, simultaneously can be with second longitudinal wall, 88 thin-walled properties, and can make valve mechanism cover 54 lightweights, and then make motor 50 lightweights.
This valve mechanism cover 54 is led to bolt 96 in mounting hole 95 interpolations that sky board 86 forms as shown in Figure 2, connects by this bolt 96 is twisted to be combined on the retainer 67.At this moment, the bottom surface butt of first longitudinal wall 87 of the sealing gasket face 84 of cylinder head 53 and valve mechanism cover 54 and with sealing gasket 90 sealing.
In the motor 50 of the two-wheeled motorcycle 1 that constitutes like this,, can improve soundproof effect because the peripheral part of valve mechanism cover 54 is the dual structures with first longitudinal wall 87 and second longitudinal wall 88.In addition, compare with the situation that does not have second longitudinal wall 88, because the increase of the heat release area of valve mechanism cover 54, so can improve cooling effect.
In addition, under steam, the wind that travels can flow into the cavity 98 of 88 of first longitudinal wall 87 of valve mechanism cover 54 and second longitudinal walls, particularly as shown in Figure 3, when the wind that travels in flowing into vehicle body forward right side cavity 98 is met the inaccessible wall 92F of vehicle body front side of recess 91, its flow direction becomes oblique lower direction, to spark plug 64 diffluences.That is, inaccessible wall 92F has the function as guide portion that guides the wind that travels to make it point to spark plug 64 and flow into.Thus, the structure of valve mechanism cover that need not be numerous and diverse, the firing chamber that can cool off spark plug 68 peripheries effectively.In addition, can realize improving the commodity of the outward appearance of valve mechanism cover.
Particularly, in this two-wheeled motorcycle 1, because the cylinder block 52 of motor 1 is leaned forward, therefore, run into the cooling fin of cylinder head 53 the topmost parts and flow to the wind that travels that becomes upwards and easily flow into cavity 98, therefore, big to the cooling effect of above-mentioned spark plug assembly department 68 peripheries.Therefore, can cool off the motor 50 of two-wheeled motorcycle 1 effectively.
Claims (5)
1, a kind of internal-combustion engine, it is an air-cooled internal combustion engine, its cylinder head obturation of upper end with cylinder block is formed with the firing chamber in inside, on described cylinder head valve mechanism cover is installed, it is characterized in that,
The peripheral part of described valve mechanism cover is the duplex with dual longitudinal wall.
2, internal-combustion engine as claimed in claim 1 is characterized in that, described dual longitudinal wall interconnects by stiffening rib.
3, internal-combustion engine as claimed in claim 1 is characterized in that, downside is open between the described dual longitudinal wall, the upside obturation.
4, internal-combustion engine as claimed in claim 3, it is characterized in that, described valve mechanism cover be installed on spark plug on the described cylinder head above prolongation on have recess, and, have the wind that travels that guiding flows between the described dual longitudinal wall and make it point to the guide portion that described spark plug flows.
5, a kind of two-wheeled motorcycle is characterized in that, loads the described internal-combustion engine of claim 4, and the described cylinder block of this internal-combustion engine is to the configuration of leaning forward of vehicle body the place ahead.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005345237A JP4602235B2 (en) | 2005-11-30 | 2005-11-30 | Internal combustion engine and motorcycle |
| JP2005345237 | 2005-11-30 | ||
| JP2005-345237 | 2005-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1975142A true CN1975142A (en) | 2007-06-06 |
| CN1975142B CN1975142B (en) | 2012-03-21 |
Family
ID=38125423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101492583A Active CN1975142B (en) | 2005-11-30 | 2006-11-21 | Internal combustion engine and two-wheeled motorcycle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4602235B2 (en) |
| CN (1) | CN1975142B (en) |
| BR (1) | BRPI0604743B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863831A (en) * | 2016-05-05 | 2016-08-17 | 陈焕祥 | Integrated simple engine |
| CN112460314A (en) * | 2019-09-06 | 2021-03-09 | 精刻株式会社 | Actuator and exhaust valve drive device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5197252B2 (en) * | 2008-09-05 | 2013-05-15 | ヤマハ発動機株式会社 | Engine and motorcycle |
| JP5189008B2 (en) | 2009-02-19 | 2013-04-24 | 本田技研工業株式会社 | Crankcase structure of internal combustion engine |
| JP5750320B2 (en) * | 2011-07-06 | 2015-07-22 | 本田技研工業株式会社 | Air-cooled internal combustion engine |
| CN102705093A (en) * | 2012-06-04 | 2012-10-03 | 无锡格莱德科技有限公司 | Split diesel engine body |
| JP6448692B2 (en) | 2017-03-16 | 2019-01-09 | 本田技研工業株式会社 | On-vehicle structure of air-cooled internal combustion engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02114734U (en) * | 1989-02-28 | 1990-09-13 | ||
| JPH0566249U (en) * | 1992-02-20 | 1993-09-03 | 日産ディーゼル工業株式会社 | Rocker cover |
| JPH07180609A (en) * | 1993-12-21 | 1995-07-18 | Nippon Mektron Ltd | Cylinder head cover device for engine |
| JP3634926B2 (en) * | 1996-09-06 | 2005-03-30 | ヤマハ発動機株式会社 | Motorcycle engine having a head cover |
| JP2006029310A (en) * | 2003-11-25 | 2006-02-02 | Honda Motor Co Ltd | Air-cooled internal combustion engine |
-
2005
- 2005-11-30 JP JP2005345237A patent/JP4602235B2/en not_active Expired - Fee Related
-
2006
- 2006-11-21 CN CN2006101492583A patent/CN1975142B/en active Active
- 2006-11-23 BR BRPI0604743-2A patent/BRPI0604743B1/en active IP Right Grant
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863831A (en) * | 2016-05-05 | 2016-08-17 | 陈焕祥 | Integrated simple engine |
| CN112460314A (en) * | 2019-09-06 | 2021-03-09 | 精刻株式会社 | Actuator and exhaust valve drive device |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0604743A (en) | 2007-11-06 |
| JP2007146802A (en) | 2007-06-14 |
| BRPI0604743B1 (en) | 2020-09-29 |
| JP4602235B2 (en) | 2010-12-22 |
| CN1975142B (en) | 2012-03-21 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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