CN203847277U - Exhaust gas circulating system of motorcycle engine - Google Patents
Exhaust gas circulating system of motorcycle engine Download PDFInfo
- Publication number
- CN203847277U CN203847277U CN201420200412.5U CN201420200412U CN203847277U CN 203847277 U CN203847277 U CN 203847277U CN 201420200412 U CN201420200412 U CN 201420200412U CN 203847277 U CN203847277 U CN 203847277U
- Authority
- CN
- China
- Prior art keywords
- chamber cover
- exhaust gas
- cylinder head
- gear chamber
- chain gear
- 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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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses an exhaust gas circulating system of a motorcycle engine. The exhaust gas circulating system comprises a cylinder head, a sprocket chamber cover and an air filter. An exhaust gas circulating channel is arranged between the cylinder head and the air filter, a sling oil disk and an oil retaining disk which are mounted in a cavity between the cylinder head and the sprocket chamber cover are sequentially arranged on the exhaust gas circulating channel, the oil retaining disk is fixedly connected with the sprocket chamber cover, and the sling oil disk is fixed onto a camshaft and is adjacent to the oil retaining disk; a ventilating pipe seat a is fixed to the upper end of the sprocket chamber cover, one end of the ventilating pipe seat a extends into the sprocket chamber cover, the other end of the ventilating pipe seat a is arranged on the outside of the sprocket chamber cover, the ventilating pipe seat a is further provided with a ventilating pipe a, one end of the ventilating pipe a is connected with the ventilating pipe seat a on the outside of the sprocket chamber cover, and the other end of the ventilating pipe a is connected with the air filter. The exhaust gas circulating system with the structure has the advantages that a complicated labyrinth can be formed in the cavity of the cylinder head, so that high resistance can be exerted on exhaust gas which flows into a cylinder head assembly, the quantity of engine oil carried by the exhaust gas can be reduced, engine oil consumption can be decreased, and environmental pollution can be reduced.
Description
Technical field
The utility model relates to motorcycle engine field, is specifically related to the scheme for exhaust gas circulation system of motorcycle engine.
Background technique
During motorcycle engine work, firing chamber can produce a large amount of waste gas, most waste gas enters atmosphere after filtering by engine exhaust muffler, having in addition small part waste gas enters in crankcase by the gap between piston and cylinder wall, the waste gas of these High Temperature High Pressure enters crankcase and certainly will cause temperature and pressure in crankcase to increase, affect the normal work of motor, therefore the waste gas of these High Temperature High Pressure must be discharged.Owing to containing the harmful matters such as nitrogen oxide (NOx) in waste gas, do not meet national requirements for environmental protection, according to national Specification, can not directly enter atmosphere.Now current common way is on engine crankcase, to offer an air outlet, as shown in Figure 1, by rubber hose, waste gas is introduced in air-strainer, and along with fresh air enters together, engine combustion is indoor to be rekindled.This scheme for exhaust gas circulation system is due to the restriction of crankcase inner space, the labyrinth of designing in gas flow path is fairly simple, when motor is during in the high rotation speed operation of large load, pressure in crankcase is often very large, the simple structure in labyrinth is limited to the obstruct of gas pressure, part machine oil can enter air-strainer together along with waste gas, cause consumption of lubricating oil large, after entering machine oil after air-strainer and air mixed combustion, can cause again the harmful matters such as nitrogen oxide (NOx) to exceed standard, befouling environment.
When winter, ambient temperature was lower in addition, high-temperature gas in rubber hose is met condensation knot, produce water, particularly for camber beam-type motorcycle, because arrangement needs, air-strainer from crankcase away from, rubber hose is longer, the water of generation is more, because the common mounting point of air-strainer is higher than engine crankcase, can cause aqueous reflux to enter in crankcase, cause lubricating oil emulsion, rotten, cause engine lubrication bad, when serious, can cause engine scuffing, the major defects such as piston locking, cause driver's personal injury accident.
Model utility content
Technical problem to be solved in the utility model is, overcome the defect existing in prior art, a kind of simple and practical motorcycle engine scheme for exhaust gas circulation system is provided, this system is arranged between cylinder head assembly and air-strainer, and simultaneously in the labyrinth of engine cylinder head indoor design complexity, waste gas can form larger resistance when by labyrinth, thereby reduction exhaust gas pressure, the oil level of carrying secretly in waste gas is reduced, reduce consumption of lubricating oil, reduce environmental pollution.The air outlet of scheme for exhaust gas circulation system is arranged on to chain gear chamber cover upper end, and ventilation base Open Side Down, the water that makes waste gas meet condensation knot can not blow back in cylinder head assembly, has reduced the rotten risk of lubricating oil emulsion.
For solving above-mentioned technical problem, the utility model has been taked following technological scheme:
Motorcycle engine scheme for exhaust gas circulation system, comprise cylinder head, chain gear chamber cover and air-strainer, between described cylinder head and air-strainer, be provided with waste gas circulation path, on described waste gas circulation path, be provided with successively and be arranged on the disc in cavity and oil baffle disc between cylinder head and chain gear chamber cover, described oil baffle disc is fixedly connected with chain gear chamber cover, and disc is fixed on camshaft and adjacent oil baffle disc; Be fixed on the ventilation base a of chain gear chamber cover upper end, chain gear chamber cover inside is stretched in one end of ventilation base a, and the other end is placed in chain gear chamber cover outside, is also provided with breathing pipe a, the ventilation base a of connection chain gear chamber cover outside, described breathing pipe a one end, the other end connects air-strainer.
Preferably, described ventilation base a is placed in one end of chain gear chamber cover outside, and Open Side Down, and its aperture position is higher than cylinder head air outlet flue.
Preferably, described cylinder head air outlet flue place arranges counterbore, and ventilation base b is installed in counterbore.
Preferably, the breathing pipe a that is positioned at described ventilation base a lower end is removable breathing pipe aI and the breathing pipe aII of being divided into also, and both connect by three-way pipe.
Preferably, the position of described three-way pipe is between air-strainer and ventilation base b.
Preferably, described three-way pipe upper end breathing pipe aI is connected with air-strainer, and three-way pipe horizontal ends breathing pipe aII is connected with ventilation base a, and three-way pipe lower end breathing pipe b is connected with ventilation base b.
The beneficial effect that the utility model can reach is:
By the engine exhaust circulatory system is arranged between cylinder head assembly and air-strainer, and disc and oil baffle disc are installed in the cavity between engine cylinder head and chain gear chamber cover, make to form between disc, oil baffle disc and chain gear chamber cover complicated labyrinth, enter the waste gas of cylinder head assembly in flow process, due to the effect in labyrinth, waste gas is formed to larger resistance, the oil level that waste gas is carried secretly is reduced, the consumption that has reduced machine oil, has reduced environmental pollution.The air outlet of scheme for exhaust gas circulation system is arranged on to chain gear chamber cover upper end, and Open Side Down for ventilation base, the water that makes waste gas meet condensation knot can not blow back in cylinder head assembly, has reduced the rotten risk of lubricating oil emulsion, make engine lubrication obtain effective guarantee, improve the durability of motor.
Accompanying drawing explanation
Fig. 1 is the structural representation that in prior art, scheme for exhaust gas circulation system is installed;
Fig. 2 is the utility model mounting structure schematic diagram;
Reference character
1-cylinder head 2-chain gear chamber cover 3-oil baffle disc 4-disc in figure
5-ventilation base a 6-breathing pipe a 7-three-way pipe 8-breathing pipe b
9-ventilation base b 10-timing sprocket 11-camshaft 12-air-strainer
101-air outlet flue 102-counterbore 601-breathing pipe aI 602-breathing pipe aII
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details.
The utility model in the specific implementation, as shown in Figure 2, a kind of motorcycle engine scheme for exhaust gas circulation system, comprise cylinder head 1, chain gear chamber cover 2 and air-strainer 12, between described cylinder head 1 and air-strainer 12, be provided with waste gas circulation path, on described waste gas circulation path, be provided with successively and be arranged on the disc 4 in cavity and oil baffle disc 3 between cylinder head 1 and chain gear chamber cover 2, described oil baffle disc 3 is fixedly connected with chain gear chamber cover 2, disc 4 is fixed on camshaft 12 and adjacent oil baffle disc 3, chain gear chamber cover 2, oil baffle disc 3 and the common labyrinth forming on waste gas circulation path of disc 4, waste gas is formed to larger resistance, reduce exhaust gas pressure.
Be fixed on the ventilation base a5 of chain gear chamber cover 2 upper ends, chain gear chamber cover 2 inside are stretched in one end of ventilation base a5, the other end is placed in chain gear chamber cover 2 outsides, Open Side Down to be placed in one end of chain gear chamber cover 2 outsides, its aperture position, higher than cylinder head air outlet flue 101, can effectively prevent that condensate return from entering in cylinder head 1, prevents lubricating oil emulsion, aperture position can make condensed water flow to smoothly cylinder head air outlet flue 101 higher than cylinder head air outlet flue 101, makes condensed water heat evaporation again.
Also be provided with breathing pipe a6, the ventilation base a5 of connection chain gear chamber cover 2 outsides, described breathing pipe a6 one end, the other end connects air-strainer 12, be positioned at removable breathing pipe aI601 and the breathing pipe aII602 of being divided into of breathing pipe a6 of ventilation base a5 lower end, both connect by three-way pipe 7, the position of three-way pipe 7 is between air-strainer 12 and ventilation base b9, air outlet flue 101 places at cylinder head 1 are provided with counterbore 102, ventilation base b9 is arranged in counterbore 102, due to the position lower than three-way pipe 7, the position of ventilation base b9, being convenient to condensed water flows to counterbore 102 places of cylinder head 1.
Described three-way pipe 7 upper end breathing pipe aI601 are connected with air-strainer 12, and three-way pipe 7 horizontal ends breathing pipe aII602 are connected with ventilation base a5, and three-way pipe 7 lower end breathing pipe b8 are connected with ventilation base b9.
The installation process of the engine exhaust circulatory system is as follows:
1, one end of ventilation base a5 is pressed in the through hole of chain gear chamber cover 2, the other end of ventilation base a5 is placed in chain gear chamber cover 2 outsides, and makes outlet downwards.
2, oil baffle disc 3 use bolts are connected with chain gear chamber cover 2, during installation, must make the spill port on oil baffle disc 3 downward, guarantee that machine oil refluxes.
3, make the adjacent oil baffle disc 3 of disc 4, and be fixed by bolts on camshaft 11, then the chain gear chamber cover assembling 2 is connected with cylinder head 1 by bolt.
4, three-way pipe 7 is placed between air-strainer 12 and ventilation base b9, with breathing pipe a6, connects ventilation base a5, three-way pipe 7 and air-strainer 12, breathing pipe b8 connecting tee pipe 7 and ventilation base b9, all connections are drive fit, guarantee sealing.
The operating process of the engine exhaust circulatory system is as follows:
During real work, in-engine residual gas will discharge, must be through chain gear chamber cover 2, oil baffle disc 3 and the formed labyrinth of disc 4, could arrive three-way pipe 7, in gas flow process, due to the effect in labyrinth, the pressure of gas can be more and more less, the machine oil that gas is carried secretly, because the effect of gravity can drop onto on above-mentioned part, chain gear chamber cover 2, the machine oil on oil baffle disc 3 can be got back in motor cavity by spill port.Machine oil on disc 4 can be along with the rotation of camshaft 11, under centrifugal action, by spill port, get back in motor cavity, high-temp waste gas is by ventilation base a5, breathing pipe aII602, three-way pipe 7, breathing pipe aI601 enters air-strainer 12, enter again burning in engine chamber, thereby complete a complete circulation.
When ambient temperature is very low, high-temperature gas in breathing pipe aI601, at tube wall, there is condensation effects, can form condensed water, condensed water is dirty along breathing pipe aI601 tube wall, because ventilation base a5 outlet is downward, so water can not flow in cylinder head 1, condensed water flows in breathing pipe b8, ventilation base b9 by three-way pipe 7, finally enter counterbore 102, during due to engine operation, the temperature in air outlet flue 101 reaches 700 ℃ of left and right, the temperature at counterbore 102 places is also far away higher than 100 ℃, and condensed water can again gasify and form steam and enter air-strainer 12 along breathing pipe b8.
Adopt after this structure, can in the cavity of cylinder head assembly, form complicated labyrinth, make the waste gas that enters cylinder head assembly in flow process, run into larger resistance, reduce the oil level that waste gas is carried secretly, reduce consumption of lubricating oil, reduce environmental pollution.Open Side Down to be arranged on the ventilation base of chain gear chamber cover upper end, and condensed water can not blowed back in cylinder head assembly, reduces the rotten risk of lubricating oil emulsion, improves the durability of motor.
Claims (6)
1. motorcycle engine scheme for exhaust gas circulation system, comprise cylinder head, chain gear chamber cover and air-strainer, between described cylinder head and air-strainer, be provided with waste gas circulation path, it is characterized in that: on described waste gas circulation path, be provided with successively and be arranged on the disc in cavity and oil baffle disc between cylinder head and chain gear chamber cover, described oil baffle disc is fixedly connected with chain gear chamber cover, and disc is fixed on camshaft and adjacent oil baffle disc; Be fixed on the ventilation base a of chain gear chamber cover upper end, chain gear chamber cover inside is stretched in one end of ventilation base a, and the other end is placed in chain gear chamber cover outside, is also provided with breathing pipe a, the ventilation base a of connection chain gear chamber cover outside, described breathing pipe a one end, the other end connects air-strainer.
2. motorcycle engine scheme for exhaust gas circulation system according to claim 1, is characterized in that: described ventilation base a is placed in one end of chain gear chamber cover outside, and Open Side Down, and its aperture position is higher than cylinder head air outlet flue.
3. motorcycle engine scheme for exhaust gas circulation system according to claim 1, is characterized in that: described cylinder head air outlet flue place arranges counterbore, and ventilation base b is installed in counterbore.
4. motorcycle engine scheme for exhaust gas circulation system according to claim 1, is characterized in that: the breathing pipe a that is positioned at described ventilation base a lower end is removable breathing pipe aI and the breathing pipe aII of being divided into also, and both connect by three-way pipe.
5. motorcycle engine scheme for exhaust gas circulation system according to claim 4, is characterized in that: the position of described three-way pipe is between air-strainer and ventilation base b.
6. motorcycle engine scheme for exhaust gas circulation system according to claim 5, it is characterized in that: described three-way pipe upper end breathing pipe aI is connected with air-strainer, three-way pipe horizontal ends breathing pipe aII is connected with ventilation base a, and three-way pipe lower end breathing pipe b is connected with ventilation base b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200412.5U CN203847277U (en) | 2014-04-23 | 2014-04-23 | Exhaust gas circulating system of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200412.5U CN203847277U (en) | 2014-04-23 | 2014-04-23 | Exhaust gas circulating system of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847277U true CN203847277U (en) | 2014-09-24 |
Family
ID=51560302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420200412.5U Expired - Fee Related CN203847277U (en) | 2014-04-23 | 2014-04-23 | Exhaust gas circulating system of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847277U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939243A (en) * | 2014-04-23 | 2014-07-23 | 重庆建设摩托车股份有限公司 | Waste gas circulation system for motorcycle engine |
| CN106499549A (en) * | 2016-11-30 | 2017-03-15 | 安徽江淮汽车集团股份有限公司 | A kind of EGR draft tube structures |
-
2014
- 2014-04-23 CN CN201420200412.5U patent/CN203847277U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939243A (en) * | 2014-04-23 | 2014-07-23 | 重庆建设摩托车股份有限公司 | Waste gas circulation system for motorcycle engine |
| CN103939243B (en) * | 2014-04-23 | 2017-01-04 | 重庆建设机电有限责任公司 | Motorcycle engine scheme for exhaust gas circulation system |
| CN106499549A (en) * | 2016-11-30 | 2017-03-15 | 安徽江淮汽车集团股份有限公司 | A kind of EGR draft tube structures |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151105 Address after: 400054 Banan District, Chongqing building Avenue, No. 2, building 1 Patentee after: CHONGQING CONSTRUCTION ELECTROMECHANICAL CO., LTD. Address before: 400054 Huaxi Industrial Park, Banan District, Chongqing Road, No. 1 Patentee before: Chongqing Jianshe Motorcycle Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20170423 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |