CN203978637U - A kind of cylinder cap of single-cylinder diesel engine - Google Patents
A kind of cylinder cap of single-cylinder diesel engine Download PDFInfo
- Publication number
- CN203978637U CN203978637U CN201420365997.6U CN201420365997U CN203978637U CN 203978637 U CN203978637 U CN 203978637U CN 201420365997 U CN201420365997 U CN 201420365997U CN 203978637 U CN203978637 U CN 203978637U
- Authority
- CN
- China
- Prior art keywords
- oil sprayer
- air
- cylinder
- mounting hole
- diesel engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of cylinder cap of single-cylinder diesel engine, comprise lid, intake duct, air outlet flue, mounting hole of oil sprayer are set in lid, described intake duct is spiral air flue, comprise air flue outlet plenum, helical cavity, described air flue outlet plenum is frustum shape, and described air flue outlet plenum is positioned on the central axis of helical cavity.The utility model by distinctive spiral inlet duct design, the reasonable Arrangement of cooling water channel, improved oil sprayer setting angle, thereby dwindled the spray angle of oil sprayer.Mounting hole of oil sprayer, away from high-temperature zone " trigonum ", therefore, not only makes air-fuel mixture more desirable, also makes the optimum state of the air inlet of air, and the temperature of oil sprayer reduces, thereby reaches desirable low oil consumption, the effect of low emission.
Description
Technical field
The utility model relates to diesel engine field, especially a kind of cylinder cap of single-cylinder diesel engine.
Background technique
At present, the single cylinder diesel of China is used widely, the fuel injection angle degree of the combustion performance of diesel engine and cylinder head, cylinder head water channel area, " trigonum (oil nozzle hole site and enter between) " have a significant impact, and therefore, directly affect the overall performance of diesel engine.The setting angle of the single cylinder diesel oil sprayer on market is all between 69 °～75 ° now, because oil spout angle is excessive, make the oil spout tapering of oil speed be not easy to control, cause the mixed effect of fuel and air to reduce, cannot form desirable burning mixture.And Cooling of Cylinder Head water channel layout is unreasonable, causes the little to flow area of water, and affect radiating effect.Meanwhile, the position of " trigonum " directly has influence on the cooling effect of oil nozzle.On the other hand, the layout of cylinder bolt also directly has influence on cylinder-liner distortion, this point on large cylinder diameter type particularly (more than cylinder diameter 120mm) outstanding.
Meanwhile, it is all horizontal arrangement mostly that the single cylinder diesel on present market enters, and on large cylinder diameter type, makes rocking arm longer, and it is large that Rocker Ratio becomes, thereby causes the early fracture of rocking arm.
Model utility content
The utility model provides a kind of cylinder cap of single-cylinder diesel engine, its object is to improve diesel combustion characteristic, increases water channel area, improve radiating effect, " trigonum " can fully be dispelled the heat, reduce oil sprayer temperature, reasonable Arrangement cylinder bolt more, reduce cylinder-liner distortion.
The technical solution of the utility model is: a kind of cylinder cap of single-cylinder diesel engine, comprise lid, intake duct, air outlet flue, mounting hole of oil sprayer are set in lid, described intake duct is spiral air flue, comprise air flue outlet plenum, helical cavity, described air flue outlet plenum is frustum shape, and described air flue outlet plenum is positioned on the central axis of helical cavity.
Described mounting hole of oil sprayer and intake duct, be positioned at the same side of the horizontal central axis of described lid, described air outlet flue, be positioned at the opposite side of the horizontal central axis of described lid, described mounting hole of oil sprayer is away from air outlet flue, near intake duct.
In the wall surrounding of described lid, arrange some cooling waters road junction, some cooling waters road junction formation water channel that is interconnected in lid.
At mounting hole of oil sprayer and air outlet flue side, be provided with water channel, the thickest between water channel and mounting hole of oil sprayer, air outlet flue is 4～5mm.
The setting angle A of described mounting hole of oil sprayer is between 78 °-80 °.
The beneficial effects of the utility model are:
Reasonable Arrangement by distinctive spiral inlet duct design, cooling water channel, has improved oil sprayer setting angle, thereby has dwindled the spray angle of oil sprayer.Mounting hole of oil sprayer, away from high-temperature zone " trigonum ", therefore, not only makes air-fuel mixture more desirable, also makes the optimum state of the air inlet of air, and the temperature of oil sprayer reduces, thereby reaches desirable low oil consumption, the effect of low emission.
Accompanying drawing explanation
Fig. 1 is cylinder-head port sectional view (laterally).
Fig. 2 is cylinder head worm's eye view.
Fig. 3 is cylinder-head port sectional view (longitudinally).
Fig. 4 is cylinder cap fuel injector hole sectional view.
Fig. 5 is the utility model screw air inlet pipe form structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described, as shown in Fig. 1～Fig. 5, cylinder cap of single-cylinder diesel engine of the present utility model, comprise lid, intake duct 1, air outlet flue 3, mounting hole of oil sprayer 2 are set in lid, and described intake duct 1 is spiral air flue, comprises air-inlet cavity, air flue outlet plenum 13, helical cavity 12, described air flue outlet plenum 13 is frustum shape, and described air flue outlet plenum is positioned on the central axis BP of helical cavity 12.The utility model adopts the screw air inlet pipe 1 of particular design, and described helical intake is through airflow analysis, guarantees engine charge the optimum state.
Mounting hole of oil sprayer 2 is away from air outlet flue 3, near intake duct 1, thereby can reduce the temperature of oil sprayer.Water channel 4, in the limited area of cylinder head, has guaranteed maximum cooling water channel area, is beneficial to the convection current of circulating water, thereby reaches the effect of heat radiation.Cooling water channel 4 is 4～5mm with the thickest of mounting hole of oil sprayer 2 and air outlet flue 3.Guaranteed good radiating effect.High-temperature zone " trigonum 6 " has sufficient cooling water channel 4, has both guaranteed that cooling water channel 4 and the thickest of mounting hole of oil sprayer 2 and air outlet flue 3 were 4～5mm, can have sufficient heat diffusion area again.
Bolt hole 5 adopts six M14 circumferential screws to fix, guaranteed fastening with body after, the circumference of body is stressed evenly, thereby has guaranteed the least amount of deformation of cylinder sleeve.
The cylinder cap opening in inlet and outlet road is not on same central axis, and referring to Fig. 2, exit orifice 11 apertures of intake duct are 50～52mm, have guaranteed full admission amount.The exit orifice center of intake duct and the horizontal central axis of cylinder head (X-axis) distance are 3～5mm, the exhaust port center of air outlet flue and X-axis distance are (18)～(20) mm, thereby reduced the Rocker Ratio entering, shortened the distance of entering rocking arm, strengthened the intensity of rocking arm.The exhaust port center of air outlet flue and Y-axis distance are (23)～(25) mm, away from mounting hole of oil sprayer 2, have reduced the temperature of oil sprayer.
As shown in Figure 4, oil sprayer established angle A is 78 °～80 °, has dwindled the spray angle of oil sprayer, and the oil spout tapering of oil speed is easily controlled, and has improved the mixed effect of fuel and air.
Claims (5)
1. a cylinder cap of single-cylinder diesel engine, comprise lid, intake duct, air outlet flue, mounting hole of oil sprayer are set in lid, it is characterized in that: described intake duct is spiral air flue, comprise air flue outlet plenum, helical cavity, described air flue outlet plenum is frustum shape, and described air flue outlet plenum is positioned on the central axis of helical cavity.
2. cylinder cap of single-cylinder diesel engine according to claim 1, it is characterized in that: described mounting hole of oil sprayer and intake duct are positioned at the same side of the horizontal central axis of described lid, described air outlet flue is positioned at the opposite side of the horizontal central axis of described lid, and described mounting hole of oil sprayer is away from air outlet flue, near intake duct.
3. cylinder cap of single-cylinder diesel engine according to claim 1, is characterized in that: in the wall surrounding of described lid, arrange some cooling waters road junction, some cooling waters road junction formation water channel that is interconnected in lid.
4. cylinder cap of single-cylinder diesel engine according to claim 3, is characterized in that: at mounting hole of oil sprayer and air outlet flue side, be provided with water channel, the thickest between water channel and mounting hole of oil sprayer, air outlet flue is 4～5mm.
5. cylinder cap of single-cylinder diesel engine according to claim 1, is characterized in that: the setting angle A of described mounting hole of oil sprayer is between 78 °-80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365997.6U CN203978637U (en) | 2014-07-04 | 2014-07-04 | A kind of cylinder cap of single-cylinder diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365997.6U CN203978637U (en) | 2014-07-04 | 2014-07-04 | A kind of cylinder cap of single-cylinder diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978637U true CN203978637U (en) | 2014-12-03 |
Family
ID=51976093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420365997.6U Expired - Fee Related CN203978637U (en) | 2014-07-04 | 2014-07-04 | A kind of cylinder cap of single-cylinder diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978637U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089842A (en) * | 2015-08-28 | 2015-11-25 | 江苏武蕾机械有限公司 | Single cylinder diesel cylinder cover with cylinder barrel and machining method thereof |
| CN106321275A (en) * | 2016-11-12 | 2017-01-11 | 顺德职业技术学院 | Internal combustion engine cylinder purifying structure |
-
2014
- 2014-07-04 CN CN201420365997.6U patent/CN203978637U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089842A (en) * | 2015-08-28 | 2015-11-25 | 江苏武蕾机械有限公司 | Single cylinder diesel cylinder cover with cylinder barrel and machining method thereof |
| CN106321275A (en) * | 2016-11-12 | 2017-01-11 | 顺德职业技术学院 | Internal combustion engine cylinder purifying structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20190704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |