CN1091717C - Power unit for small vehicle with water-cooled internal combustion engine - Google Patents
Power unit for small vehicle with water-cooled internal combustion engine Download PDFInfo
- Publication number
- CN1091717C CN1091717C CN99100995A CN99100995A CN1091717C CN 1091717 C CN1091717 C CN 1091717C CN 99100995 A CN99100995 A CN 99100995A CN 99100995 A CN99100995 A CN 99100995A CN 1091717 C CN1091717 C CN 1091717C
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- China
- Prior art keywords
- combustion engine
- power plant
- radiator
- unit power
- internal combustion
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Abstract
The object of present invention is to provide a unified power unit for small vehicles with water-cooling engine and transmission, especially also combining the radiator within the power unit for small vehicles. As for the unified power unit 1 for small vehicles for water-cooling engine 2 and the transmission 3 supporting the rear wheel 19 at one side, it is characterized that the front portion of power unit 1 mounted on the chassis 0 can move freely upward and downward; and, adjoining to the vibrating mounting portion 13 of the power unit; then, mounting the radiator 39 with the power unit 1 as a whole.
Description
The present invention relates to water cooled internal combustion engine and the incorporate small-sized vehicle unit power plant of drive motor particularly are provided with the small-sized vehicle unit power plant of radiator integratedly.
As the unit power plant that is equipped on the prior art on two-wheeled, on the books in the invention of special fair 3-46352 number of Japanese patent gazette.
In this unit power plant, cylinder points to horizontal the place ahead substantially, above the boundary member of cylinder and crankcase, and can be towards freely swinging ground axle suspension up and down on vehicle frame, radiator is installed on the drive motor integratedly, and makes the radiator air be taken into the front and back length direction of face along this drive motor.
In above-mentioned communique, as other form of implementation, the anterior position at rear wheel is installed in radiator on the drive motor integratedly, and makes the radiator air be taken into face along the overall width direction.
In the unit power plant that above-mentioned communique is recorded and narrated, because the cooling-water chamber of combustion engine separates with radiator, so it is elongated to connect both cooling water path, cooling water system is complicated, and simultaneously, flow path resistance increases, the cooling water pump load increases, and these are problems of its existence.
In addition, because radiator props up part away from the swing pivot of unit power plant, so it is bigger to be subjected to the influence of hunting motion of unit power plant, the durability of radiator is vulnerable to infringement.
In the 1st form of implementation of above-mentioned communique, because the air of radiator is taken into face along direction of travel, so walking wind can not be utilized effectively, the cooling performance of radiator is low.
In the 2nd form of implementation, because the place that is provided with of radiator is positioned at high position, so,, also can block cooling air and be taken into mouth and still have the shortcoming can not obtain sufficient cooling performance because of the pin of passenger even behind its place ahead, be covered with to such an extent that have cooling air to be taken into mouth.
First scheme of the present invention relates to the improvement that has overcome small-sized vehicle unit power plant above-mentioned difficult point, that have water cooled internal combustion engine, and this small-sized vehicle unit power plant is integrated with the drive motor that rear wheel is bearing in a side with water cooled internal combustion engine; It is characterized in that: the front portion of this unit power plant can be towards being located on the vehicle body with freely swinging up and down, and radiator is located on this unit power plant integratedly in connection with the swing installation portion of this unit power plant.
First scheme of the present invention is owing to have such as described above formation, so the swing part and the radiator of above-mentioned unit power plant are approaching, as a result, the force of inertia that is acted on the above-mentioned radiator by the swing of this unit power plant reduces, and does not damage the danger of the durability of this radiator.
The such formation of alternative plan according to the present invention makes cylinder head cooling-water chamber and above-mentioned radiator nearby approaching, and the cooling water path that connects both shortens, the cooling water system simplification, flow path resistance reduces, and the load of cooling water pump tails off, and the miniaturization of cooling water pump becomes possibility.
By the formation as third party's case of the present invention, the pin that can not be subjected to front shroud and the passenger wind above-mentioned radiator that fully leads of will walking obtains high cooling performance with hindering.
Fig. 1 is the diagrammatic side view of motor scooter that is equipped with the unit power plant of a form of implementation of the present invention.
Fig. 2 is the transparent view of the unit power plant shown in Fig. 1.
Fig. 3 is the lateral plan of above-mentioned unit power plant.
Fig. 4 is the vertical profile birds-eye view of Fig. 3.
Fig. 5 is that the V of Fig. 3 is to front elevation.
The back view of Fig. 6 for forwards seeing from Fig. 1 rear.
Fig. 7 is that longitudinal section amplifies in the portion that wants of Fig. 6.
Fig. 8 is the front elevation of another form of implementation.
Fig. 9 is the lateral plan of above-mentioned another form of implementation in addition.
The vertical profile birds-eye view of Figure 10 for cutting open along the X-X line of Fig. 9.
Below, the form of implementation by the present invention shown in Fig. 1～Fig. 7 the 1st～the 3rd scheme is described.
The unit power plant 1 that is equipped on the small motorcycle type motorbicycle 0 is made of water cooled internal combustion engine 2, cone belt formula toric transmission 3 and the gear reducer 4 of putter type valve in head formula 4 strokes 1 circulation (being generally called 4 stroke cycle) single cylinder.
Crankcase 5,6 about unit power plant 1 is divided into, cylinder block 7, cylinder head 8, and cylinder cover cap 9; Make cylinder block 7 cylinder-bore 20 central axis substantially towards ground, horizontal the place ahead at the overlapping cylinder block 7 of the front end of crankcase 5,6, and at overlapping successively cylinder head 8 in the place ahead of cylinder block 7 and cylinder cover cap 9, these crankcases 5,6, cylinder block 7, cylinder head 8 and cylinder cover cap 9 mutually combine and are integral.
As shown in Figure 1, on the main frame 10 of small motorcycle type motorbicycle 0, form back vent pivot 11, by connecting rod 12 forward lower part all-in-one-piece frame support bracket 13 with cylinder head 8 can be freely be installed at this back vent pivot 11 with swinging up and down, erect integratedly to oblique back upper place from the rear end of above-mentioned main frame 10 rear frame 14 is set, can cooperate back axle pivot branch 15 freely to rotate at aftermentioned back axle 59, right side energy disperser 90 is installed between this rear frame 14 and this back axle pivot branch 15, simultaneously, left side energy disperser 92 is installed between the carriage 91 of above-mentioned rear frame 14 and crankcase 6, and unit power plant 1 can be that the center is installed on main frame 10 with swinging up and down with frame support bracket 13.
In addition, left energy disperser 92 has common energy disperser structure, and its upper end has carriage 93.Yet, in right energy disperser 90, there is bracket 94 upper end, between overcoat 95 and interior cover 96, coil spring 97 is installed, cushioning bottom bracket 98 spiral shell set shock struts 99 with interior cover 96 all-in-one-pieces, setting-in stop rubber 100 in the bottom of this shock strut 99, rear wheel pivot branch 15 setting-in bearings 101 in the lower end of aforementioned buffering bottom bracket 98, this bearing 101 chimeric back axle 59, at the right-hand member spiral shell set nut 102 of this back axle 59, this back axle 59 is bearing in the lower end back axle pivot branch 15 of buffering bottom bracket 98 free to rotately by bearing 101.Upper end at buffering bottom bracket 98 forms the small diameter cylinder 98a of portion, in the lower end that coil spring 97 in the 98a of the small diameter cylinder portion slack running fit of buffering bottom bracket 98.
And, but the front end free rotary ground supporting of main frame 10 turn to the axle 16, turn to 17 turning to an axle upper end one of 16 is installed with, simultaneously, but turn to a lower end free rotaring ground supporting of axle 16 front vehicle wheel 18 at this, and, at the right-hand member of aftermentioned back axle 59 rear wheel 19 is installed integratedly.
As shown in Figures 3 and 4, cylinder-bore 20 slidably setting-in piston 21, simultaneously, about crankcase 5,6 supporting bent axle 22 pivotally, the two ends of connecting rod 25 are installed by piston pin 23 and Crankpin 24 pivotally at this piston 21 and bent axle 22, when piston 21 crank motions, drive bent axle 22 revolutions.
Form the induction opening 27 and the deflation hole 28 of the combustion chamber 26 that is communicated to cylinder-bore 20 tops at cylinder head 8, but be provided with inlet valve 29 and exhaust valve 30 respectively freely openable at this induction opening 27 and deflation hole 28.
In addition, disposing rocker shaft 31 in connection with the top of inlet valve 29 and exhaust valve 30, but rocking arm 32 at these rocker shaft 31 free swaying ground supportings, an end of this rocking arm 32 contacts with the top of above-mentioned inlet valve 29, exhaust valve 30.
Be connected in axis of revolution 37 (not shown)s of aftermentioned cooling water pump 36 with half camshaft 33 magnetic of speed of revolutions driving rotational of bent axle 22, valve tappet 34 is contacted with this camshaft 33, between the other end of above-mentioned rocking arm 32 and valve tappet 34, push rod 35 is installed, when bent axle 22 revolution 2 circles, inlet valve 29, exhaust valve 30 are being driven with 1 time ratio and are opening and closing.
In addition, the discharge orifice that does not illustrate in the drawings of above-mentioned cooling water pump 36 is connected in combustion chamber 26 cooling-water chamber 38 on every side by the cooling water path (not shown) of water cooled internal combustion engine 2.
As shown in Figure 5, with cylinder head 8 all-in-one-piece frame support brackets 13 below, against the adapter plate 40 of radiator 39,, radiator 39 one are installed on frame support bracket 13 by connecting this adapter plate 40 and being fixed at bolt 41 on the frame support bracket 13.
In cooling water path 42,43, insert the inserted sleeve 66 of left and right sides coolant storage tank 44,45 upper ends respectively by O-ring seals 67 along up/down perforation frame support bracket 13.Coolant storage tank 44,45 about this cooling water path 42,43 is communicated to, this coolant storage tank 44,45 is connected by the cooling water pipe 46 that points to the left and right horizontal direction, every a determining deviation radiating gill 47 that multi-disc is being stood along vertical surface is installed at this cooling water pipe 46, the upper end of above-mentioned cooling water path 42,43 is respectively by being connected to the sucking hole (not shown) and the cooling-water chamber 38 of cooling water pump 36 communicating pipe 48,49.
As shown in Figure 4, be provided with the driving pulley conical disk 52 of built-in centrifugal weight 51 at the right-hand member of bent axle 22, and driven shaft 53, the driven pulley conical disk 54 that is supported on left and right sides crankcase 5,6 rear portions be set, set up endless V-belt 55 at above-mentioned driving pulley conical disk 52 and driven pulley conical disk 54, constitute cone belt formula toric transmission 3, increase along with bent axle 22 speed of revolutionss, the volume of drive pulley 52 is hung the radius increase under the action of centrifugal force of centrifugal weight 51, and converter speed ratio reduces continuously.
Centrifugal clutch 56 is installed between driven shaft 53 and driven pulley conical disk 54, left part at this driven shaft 53 forms miniature gears 57, this miniature gears 57 is by output gear 60 engagements of speed change intermediate gear 58 with back axle 59, constitute gear reducer 4, when driving these driven pulley conical disk 54 revolutions and surpassing the regulation speed of revolutions, the output of water cooled internal combustion engine 2 is delivered to and back axle 59 all-in-one-piece rear wheels 19 by cone belt formula toric transmission 3 and gear reducer 4.
As shown in Figure 4, establishing actuating and generating device 61, in addition, as shown in Figure 1, below pedal 62, disposing fuel tank 63 at the left end of bent axle 22,
Form of implementation shown in Fig. 1～Fig. 7 is owing to constitute as described above, so, small motorcycle type motorbicycle 0 is the same with the motor scooter with common cone belt formula toric transmission, even water cooled internal combustion engine 2 startings, the output of water cooled internal combustion engine 2 is not delivered to rear wheel 19 yet; But along with water cooled internal combustion engine 2 quickens, centrifugal clutch 56 becomes engagement state, and small motorcycle type motorbicycle 0 begins to advance, and when the speed of revolutions of water cooled internal combustion engine 2 further increased, the speed of a motor vehicle of small motorcycle type motorbicycle 0 also increased.
When water cooled internal combustion engine 2 startings, cooling water temperature in cooling-water chamber 38 is in the occasion below temperature required, close not shown calorstat, cooling water expansion tank in the cooling-water chamber 38 does not flow to radiator 39 substantially, but when the cooling water temperature in the cooling-water chamber 38 rises, above-mentioned calorstat is opened, be heated to high temperature from the cooling water expansion tank that flow into cooling-water chamber 38 after the discharge orifice of cooling water pump 36 flows out, by communicating pipe 49, cooling water path 43 is discharged to coolant storage tank 45, during flowing into coolant storage tank 44 by coolant guide pipe 46 from this coolant storage tank 45, be cooled by radiating gill 47 heat radiations that contact with walking wind, pass through cooling water path 42 from coolant storage tank 44, communicating pipe 48 turns back to the sucking hole of cooling water pump 36, and cooling water expansion tank circulates serially.
Since radiator 39 be directed forward be configured in the lower front of the cylinder head 8 of water cooled internal combustion engine 2, so flowing through near the fuel tank 63 walking wind of pedal 62 belows can not covered by the back cover 64 of small motorcycle type motorbicycle 0, can be smoothly by between the radiating gill 47 of radiator 39, as a result, the cooling performance of radiator is good.
In addition, walking along with small motorcycle type motorbicycle 0, even the concavo-convex unit power plant 1 that makes of ground-surface acutely swings up and down, because radiator 39 is near the frame support bracket 13 as unit power plant 1 center of oscillation portion, so radiator 39 can not be subjected to very big reciprocal inertia force, the result, the durability of radiator 39 is good, and the walking wind facies keeps necessarily substantially for the flow regime of radiator 39, cools off good stability.
The left end of rear frame 14 is connected in the carriage 91 of the crankcase 6 of unit power plant 1 by left side energy disperser 92, simultaneously, the right-hand member of rear frame 14 by right side energy disperser 90, with its in cover 96 all-in-one-pieces bufferings bottom bracket 98 and bearing 101 be connected in back axle 59, so, unit power plant 1 two ends are supported, can not act on inappropriate power by force on the frame support bracket 13 in the place ahead of unit power plant 1, unit power plant 1 can stably swing up and down.
In interior cover 96 one of right side energy disperser 90 in conjunction with buffering bottom bracket 98, and the shock strut 99 that on this buffering bottom bracket 98, is being spirally connected integratedly, supporting back axle 59 at this buffering bottom bracket 98 by bearing 101, so, structure is simplified and miniaturization and, simultaneously, can cut down components number, and improvement installation property, result, cost-cutting significantly.
In addition, because in the lower end that coil spring 97 in the 98a of the small diameter cylinder portion slack running fit of buffering bottom bracket 98, so coil spring 97 can stably be supported on buffering bottom bracket 98.
In the form of implementation shown in Fig. 1～Fig. 7, be that adapter plate 40 is in direct contact with frame support bracket 13, but also can be as shown in Figure 8, softer rubber 65 is installed between frame support bracket 13 and adapter plate 40, by O-ring seals 67 the last end junction 66 of coolant storage tank 44,45 is inserted into cooling water path 42,43 respectively, when such formation, the vibration 44,45 junction surfaces, water cooled internal combustion engine 2 of available buffer cooling water path 42,43 and coolant storage tank relaxes the stress that the radiator joint portion is subjected to significantly.
In the form of implementation of Fig. 1～shown in Figure 8, be to have adopted cone belt formula toric transmission 3, but also can be as Fig. 9～as shown in Figure 10, replace cone belt formula toric transmissions 3 with gear transmission 70.
In the unit power plant 1 of Fig. 9～shown in Figure 10, the magnetic plunging joint 71 that magnetic connects camshaft 33 and the rotor 36a of cooling water pump 36 is shown.
In addition, as shown in Figure 9, be connected to the main shaft 74 of gear transmission 70 by intermediate gear 73 with bent axle 22 all-in-one-piece output gears 72 with not shown speed change clutch, this main shaft 74 can be connected to countershaft 76 by variable gear group 75 with freely switching, and this countershaft 76 is connected in back axle 59 by gear 77.
Engaging gearbox forks 78 on each gear of the variable gear group 75 of main shaft 74 and countershaft 76, this gearbox forks 78 is switched by variable speed drum 79 and drives.
Variable speed drum 79 is connected in variable speed motor 81 by speed-changing mechanism 80, by the intermittent-rotation driving of this variable speed motor 81, makes 80 1 grades one grade ground gear shift acceleration of speed-changing mechanism or shift down.
The form of implementation of Fig. 9～shown in Figure 10 is owing to constitute like that as described above, so, quicken operation or the shift down operation can make gear transmission 70 gear shift acceleration or shift downs in one grade of one grade of ground by gear shift.
Heated cooling water expansion tank enters into coolant storage tank 83 from calorstat 86 by communicating pipe 49 in cooling-water chamber 38, flow through from this coolant storage tank 83 in the not shown coolant guide pipe during, cool off by radiating gill 85 by walking wind, afterwards, flow into coolant storage tank 84, by the sucking hole that is drawn into cooling water pump 36 communicating pipe 48, after cooling water pump 36 pressurizations, turn back to cooling-water chamber 38 once more, thereby can in cooling water system, circulate.
In this form of implementation and since radiator 82 be configured in frame support bracket 13 near, so can not be subjected to the harmful effect that swings up and down of too many unit power plant 1, in addition, radiator 82 fully bears the walking wind from the place ahead, cooling performance height.
In addition, though be small motorcycle type motorbicycle to be described as dilly, the corf that the present invention also can be applicable to the bolster-type three wheeled motor car and walks in wilderness.
Claims (3)
1. small-sized vehicle unit power plant with water cooled internal combustion engine, water cooled internal combustion engine and in being integral of drive motor of a side bearing rear wheel; It is characterized in that: but the front portion easy on and off of this unit power plant swingingly is installed on vehicle body, radiator is in connection with the swing installation portion of this unit power plant, and be located on this unit power plant with being integral, radiator is provided with radiating gill around cooling water pipe, and coolant storage tank and radiator cap have incorporate structure.
2. the small-sized vehicle unit power plant with water cooled internal combustion engine as claimed in claim 1 is characterized in that: the cylinder of above-mentioned water cooled internal combustion engine is the oblique or directed forward of square neck forward, and the cylinder head of this combustion engine nearby part can be installed on vehicle body with freely swinging.
3. the small-sized vehicle unit power plant with water cooled internal combustion engine as claimed in claim 2 is characterized in that: nearby be provided with above-mentioned radiator below the part at the cylinder head that is installed on above-mentioned vehicle body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10410398A JP3992358B2 (en) | 1998-03-31 | 1998-03-31 | Power unit for small vehicles with water-cooled internal combustion engine |
| JP104103/98 | 1998-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1230505A CN1230505A (en) | 1999-10-06 |
| CN1091717C true CN1091717C (en) | 2002-10-02 |
Family
ID=14371795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99100995A Expired - Fee Related CN1091717C (en) | 1998-03-31 | 1999-01-21 | Power unit for small vehicle with water-cooled internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3992358B2 (en) |
| CN (1) | CN1091717C (en) |
| IT (1) | IT1307155B1 (en) |
| TW (1) | TW404905B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4596996B2 (en) * | 2005-07-05 | 2010-12-15 | 本田技研工業株式会社 | Cooling structure for vehicle power unit |
| JP2012025219A (en) * | 2010-07-21 | 2012-02-09 | Honda Motor Co Ltd | Power unit for small vehicle |
| JP5474737B2 (en) * | 2010-11-11 | 2014-04-16 | 本田技研工業株式会社 | Saddle riding type electric vehicle |
| CN105015688A (en) * | 2015-07-29 | 2015-11-04 | 力帆实业(集团)股份有限公司 | Motorcycle with high-position rear brake pedal |
| CN108252786A (en) * | 2016-12-28 | 2018-07-06 | 重庆赫皇科技咨询有限公司 | Cooling motorcycle water external cooler bin |
| CN110043355B (en) * | 2019-05-29 | 2024-04-09 | 浙江美可达摩托车有限公司 | Water cooling structure of motorcycle engine |
| WO2021149146A1 (en) * | 2020-01-21 | 2021-07-29 | ヤマハ発動機株式会社 | Manual-transmission straddled vehicle |
| CN114379687B (en) * | 2020-10-16 | 2023-07-14 | 光阳工业股份有限公司 | Electric vehicle |
| JP7389079B2 (en) * | 2021-03-30 | 2023-11-29 | 本田技研工業株式会社 | Radiator support structure for saddle type vehicles |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0346352B2 (en) * | 1982-01-28 | 1991-07-15 | Yamaha Motor Co Ltd | |
| CN2161734Y (en) * | 1993-07-15 | 1994-04-13 | 李相希 | Water cooled engine for motorcycle |
| CN2276447Y (en) * | 1996-12-03 | 1998-03-18 | 山东巨力(集团)股份有限公司 | Motor tricycle |
-
1998
- 1998-03-31 JP JP10410398A patent/JP3992358B2/en not_active Expired - Fee Related
- 1998-12-09 TW TW087120457A patent/TW404905B/en not_active IP Right Cessation
-
1999
- 1999-01-21 CN CN99100995A patent/CN1091717C/en not_active Expired - Fee Related
- 1999-02-09 IT IT1999TO000100A patent/IT1307155B1/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0346352B2 (en) * | 1982-01-28 | 1991-07-15 | Yamaha Motor Co Ltd | |
| CN2161734Y (en) * | 1993-07-15 | 1994-04-13 | 李相希 | Water cooled engine for motorcycle |
| CN2276447Y (en) * | 1996-12-03 | 1998-03-18 | 山东巨力(集团)股份有限公司 | Motor tricycle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1230505A (en) | 1999-10-06 |
| TW404905B (en) | 2000-09-11 |
| IT1307155B1 (en) | 2001-10-29 |
| ITTO990100A1 (en) | 2000-08-09 |
| JPH11278343A (en) | 1999-10-12 |
| JP3992358B2 (en) | 2007-10-17 |
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| 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: 20021002 Termination date: 20100221 |