CN102400811A - Air cylinder head for three-air-valve engine - Google Patents
Air cylinder head for three-air-valve engine Download PDFInfo
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- CN102400811A CN102400811A CN2011104257336A CN201110425733A CN102400811A CN 102400811 A CN102400811 A CN 102400811A CN 2011104257336 A CN2011104257336 A CN 2011104257336A CN 201110425733 A CN201110425733 A CN 201110425733A CN 102400811 A CN102400811 A CN 102400811A
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- sluice way
- width
- air
- cylinder head
- valve engine
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Abstract
The invention discloses an air cylinder head for a three-air-valve engine. A cooling air channel consists of an air inlet (2), a first drainage channel (3), a second drainage channel (4) and an air outlet (5); the length (L1) of the air inlet (2) is 32.5 to 39.5 millimeters and the width (L2) of the air inlet (2) is 30 to 36 millimeters; the width (L3) of the first drainage channel (3) is 10 to 16 millimeters and the height (L4) of the first drainage channel (3) is 26 to 32 millimeters; the width (L5) of the narrowest part of the second drainage channel (4) is 26 to 32 millimeters and the width (L6) of the widest part of the second drainage channel (4) is 44 to 50 millimeters; and the height (L7) of the shallowest part of the second drainage channel (4) is 15 to 21 millimeters and the height (L8) of the deepest part of the second drainage channel (4) is 26 to 32 millimeters. By optimally designing the cooling air channel, the pneumatic characteristic of the cooling air channel can be improved remarkably; furthermore, the cylinder temperature of the air cylinder head for the three-air-valve engine is reduced effectively and the performance of the three-air-valve engine is improved greatly.
Description
Technical field
The invention belongs to technical field of engines, specifically, the particularly cylinder head of three-valve engine.
Background technique
At present, small-displacement engine of motorcycle all adopts two air valve structures, and this is because small-displacement engine of motorcycle is lower with performance requirement at a high speed to middling speed, though conventional dual valve motor complete machine noise is bigger, can reach usage requirement.Along with to the improving constantly of performance requirement, on float amount motorcycle, adopt three-valve engine to become Development Trend.Operated by rotary motion has cooling duct on the cylinder head of conventional three-valve engine, and this cooling duct design is unreasonable, and has the turning near inlet in the cooling duct, causes the interior air current flow of cooling duct not smooth easily; Simultaneously; In the outlet port of cooling duct powerful eddy current flow group is arranged, cause the gas-flow resistance at this place very big, make in the cooling duct and originally can't flow out with regard to the very little air of flow; The heat at the back side, firing chamber can't be taken away through cooling blast like this, causes Cylinder Head Temperature very high.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of three-valve engine cylinder head, with effective reduction Cylinder Head Temperature.
Technological scheme of the present invention is following: a kind of three-valve engine cylinder head; On cylinder head (1), offer cooling duct; This cooling duct is made up of intake grill (2), first sluice way (3), second sluice way (4) and exhaust outlet (5) successively; Its key is: said intake grill (2) is a rectangle, and the length (L1) of this intake grill (2) is 32.5-39.5mm, and width (L2) is 30-36mm; Said first sluice way (3) is a straight passage, and the width (L3) of this first sluice way (3) is 10-16mm, and highly (L4) is 26-32mm; Said second sluice way (4) and vertical linking to each other of first sluice way (3), this second sluice way (4) width (L5) at narrow place are 26-32mm, and the width of the widest position (L6) is 44-50mm; The end face of said second sluice way (4) is a cambered surface, and the bottom surface is a relief, and second sluice way (4) height (L7) at shallow place is 15-21mm, and innermost height (L8) is 26-32mm.
The present invention has increased intake grill pressure and flow through cooling duct is optimized design, has reduced the air channel internal resistance; Eliminated the eddy current vapour lock air mass in conventional art outlet port, can make the cooling duct air inlet sufficient, and air current flow is smooth and easy in the cooling duct; Through evidence, the gas flow rate in the cooling duct can reach 3.2g/s, has significantly improved the aerodynamic characteristic of cooling duct thus; Increase cooling air delivery, the cooling effect at the back side, cylinder head firing chamber is significantly improved, greatly reduced Cylinder Head Temperature; Thereby the reliable durable property of motor is largely increased, has also reduced the pollutant emission of motor.
As preferably, the length (L1) of said intake grill (2) is 36.5mm, and width (L2) is 33mm; The width (L3) of said first sluice way (3) is 13mm, and highly (L4) is 29mm; Said second sluice way (4) width (L5) at narrow place is 29mm, and the width of the widest position (L6) is 47mm; Said second sluice way (4) height (L7) at shallow place is 18mm, and innermost height (L8) is 29mm.
In said intake grill (2), be provided with first guide plate (6) that steering flow flows to first sluice way (3).First guide plate plays water conservancy diversion, helps cooling air and gets into first sluice way through intake grill.
Position near first sluice way (3) in said second sluice way (4) is provided with second guide plate (7), and this second guide plate (7) is an arc.Second guide plate plays water conservancy diversion, and the air-flow of avoiding first sluice way to flow to second sluice way produces bigger resistance because of directly changeing the right angle, has effectively improved the smoothness that cooling air flows.
Beneficial effect: the present invention is through being optimized design to cooling duct; Can significantly improve the aerodynamic characteristic of cooling duct; Effectively reduce the cylinder temperature of three-valve engine cylinder head; Greatly improve the performance of three-valve engine, had characteristics such as reasonable in design, simple in structure, that transformation is easy, reforming cost is low.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the B-B sectional view of Fig. 1.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is a stereogram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4; The cylinder head of three-valve engine has cylinder head 1; On cylinder head 1, offer cooling duct; This cooling duct is made up of intake grill 2, first sluice way 3, second sluice way 4 and exhaust outlet 5 successively, and the position of said intake grill 2 and exhaust outlet 5 is identical with existing technology, does not do at this and gives unnecessary details.Wherein, intake grill 2 is a rectangle, and the length L 1 of this intake grill 2 is 32.5-39.5mm, and width L2 is 30-36mm.In the present embodiment, the length L 1 of intake grill 2 is preferably 36.5mm, and width L2 is preferably 33mm.Offer first sluice way 3 in the inboard of intake grill 2 bottoms, and be formed with first guide plate 6 that steering flow flows to first sluice way 3 in the intake grill 2.Said first sluice way 3 is a straight passage, and the width edge of the center line of this first sluice way 3 and intake grill 2 is perpendicular, and the width L3 of first sluice way 3 is 10-16mm, and height L4 is 26-32mm.In the present embodiment, the width L3 of first sluice way 3 is preferably 13mm, and height L4 is preferably 29mm.
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the entrance point of second sluice way 4 and 3 vertical linking to each other of first sluice way, the outlet end of second sluice way 4 links to each other with exhaust outlet 5.The inner side edge on said second sluice way 4 both sides is relief, and the second sluice way 4 width L5 at narrow place is 26-32mm, and the width L6 of the widest position is 44-50mm.In the present embodiment, the second sluice way 4 width L5 at narrow place is preferably 29mm, and the width L6 of the widest position is preferably 47mm.The end face of said second sluice way 4 is a cambered surface, and the bottom surface is a relief, and the second sluice way 4 height L7 at shallow place is 15-21mm, and innermost height L8 is 26-32mm.In the present embodiment, the second sluice way 4 height L7 at shallow place is preferably 18mm, and innermost height L8 is preferably 29mm.Position near first sluice way 3 in said second sluice way 4 is formed with two or multi-disc second guide plate 7, and this second guide plate 7 is an arc, and the air-flow that second guide plate 7 plays a part in guiding first sluice way 3 is smooth and easy mobile in second sluice way 4.
Claims (4)
1. three-valve engine cylinder head; On cylinder head (1), offer cooling duct; This cooling duct is made up of intake grill (2), first sluice way (3), second sluice way (4) and exhaust outlet (5) successively; It is characterized in that: said intake grill (2) is a rectangle, and the length (L1) of this intake grill (2) is 32.5-39.5mm, and width (L2) is 30-36mm; Said first sluice way (3) is a straight passage, and the width (L3) of this first sluice way (3) is 10-16mm, and highly (L4) is 26-32mm; Said second sluice way (4) and vertical linking to each other of first sluice way (3), this second sluice way (4) width (L5) at narrow place are 26-32mm, and the width of the widest position (L6) is 44-50mm; The end face of said second sluice way (4) is a cambered surface, and the bottom surface is a relief, and second sluice way (4) height (L7) at shallow place is 15-21mm, and innermost height (L8) is 26-32mm.
2. three-valve engine cylinder head according to claim 1 is characterized in that: the length (L1) of said intake grill (2) is 36.5mm, and width (L2) is 33mm; The width (L3) of said first sluice way (3) is 13mm, and highly (L4) is 29mm; Said second sluice way (4) width (L5) at narrow place is 29mm, and the width of the widest position (L6) is 47mm; Said second sluice way (4) height (L7) at shallow place is 18mm, and innermost height (L8) is 29mm.
3. three-valve engine cylinder head according to claim 1 and 2 is characterized in that: in said intake grill (2), be provided with first guide plate (6) that steering flow flows to first sluice way (3).
4. three-valve engine cylinder head according to claim 3 is characterized in that: the position near first sluice way (3) in said second sluice way (4) is provided with second guide plate (7), and this second guide plate (7) is an arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110425733 CN102400811B (en) | 2011-12-19 | 2011-12-19 | Air cylinder head for three-air-valve engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110425733 CN102400811B (en) | 2011-12-19 | 2011-12-19 | Air cylinder head for three-air-valve engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102400811A true CN102400811A (en) | 2012-04-04 |
| CN102400811B CN102400811B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110425733 Expired - Fee Related CN102400811B (en) | 2011-12-19 | 2011-12-19 | Air cylinder head for three-air-valve engine |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123101A2 (en) * | 1983-04-22 | 1984-10-31 | KHD Canada Inc. DEUTZ R & D Devision | Cylinder head for an air-cooled internal-combustion piston engine |
| JPS61135960A (en) * | 1984-12-04 | 1986-06-23 | Yanmar Diesel Engine Co Ltd | Cylinder head for air-cooled type internal combustion engine |
| CN101082311A (en) * | 2007-06-29 | 2007-12-05 | 无锡开普动力有限公司 | Wind cooling diesel engine cylinder cover |
| CN201144736Y (en) * | 2008-01-22 | 2008-11-05 | 重庆润通动力有限公司 | Air-cooled type universal engine cylinder head |
| CN201284696Y (en) * | 2008-10-22 | 2009-08-05 | 重庆宗申发动机制造有限公司 | Cylinder head of motorcycle engine |
| CN202370681U (en) * | 2011-12-19 | 2012-08-08 | 力帆实业(集团)股份有限公司 | Air cylinder head structure |
-
2011
- 2011-12-19 CN CN 201110425733 patent/CN102400811B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123101A2 (en) * | 1983-04-22 | 1984-10-31 | KHD Canada Inc. DEUTZ R & D Devision | Cylinder head for an air-cooled internal-combustion piston engine |
| JPS61135960A (en) * | 1984-12-04 | 1986-06-23 | Yanmar Diesel Engine Co Ltd | Cylinder head for air-cooled type internal combustion engine |
| CN101082311A (en) * | 2007-06-29 | 2007-12-05 | 无锡开普动力有限公司 | Wind cooling diesel engine cylinder cover |
| CN201144736Y (en) * | 2008-01-22 | 2008-11-05 | 重庆润通动力有限公司 | Air-cooled type universal engine cylinder head |
| CN201284696Y (en) * | 2008-10-22 | 2009-08-05 | 重庆宗申发动机制造有限公司 | Cylinder head of motorcycle engine |
| CN202370681U (en) * | 2011-12-19 | 2012-08-08 | 力帆实业(集团)股份有限公司 | Air cylinder head structure |
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| Publication number | Publication date |
|---|---|
| CN102400811B (en) | 2013-03-20 |
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Granted publication date: 20130320 Termination date: 20191219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |