CN202611912U - Exhaust passage structure of engine cylinder cover - Google Patents
Exhaust passage structure of engine cylinder cover Download PDFInfo
- Publication number
- CN202611912U CN202611912U CN 201220212616 CN201220212616U CN202611912U CN 202611912 U CN202611912 U CN 202611912U CN 201220212616 CN201220212616 CN 201220212616 CN 201220212616 U CN201220212616 U CN 201220212616U CN 202611912 U CN202611912 U CN 202611912U
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- CN
- China
- Prior art keywords
- section
- air outlet
- exhaust passage
- air
- oval
- 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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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model discloses an exhaust passage structure of an engine cylinder cover. An exhaust passage comprises an air inlet inside a combustion chamber and an air outlet on a side wall of the cylinder cover. The section of the air inlet of the exhaust passage is round, and the section of the air outlet of the exhaust passage is oval. The whole exhaust passage gradually transitions from a round shape of the air inlet to an oval shape of the air outlet. Compared with the prior art, the exhaust passage gradually transitions from a round section of the round air inlet to an oval section. Due to the fact that on the conditions of the same flow areas, the flat oval section is more beneficial for stable passing of air flows than the round section, the exhaust passage structure with the oval section can effectively improve flow states of the exhaust air flows, and can reduce noise of the air flows; and through improvement of the cylinder cover structure, noise can be effectively reduced at a low cost.
Description
Technical field
The utility model relates to engine cylinder cap, and specifically, the utility model relates to a kind of engine cylinder cap air discharging structure.
Background technique
At present, car noise control more and more receives people's attention as the important step of vehicle operation performance, how to reduce the noise that produces in the engine operation process, is an importance of Control of Automobile noise.Wherein, The HTHP waste gas that gasoline produces after the abundant work by combustion in engine cylinder-body firing chamber; The high-speed eddy air-flow that in the discharge process via the cylinder head exhaust duct, produces, the noise that it flows and pipe friction takes place is the important source of engine noise.The control engine noise adopts sound-absorbing damping supplementary equipment such as laying the noise reduction cotton more at present, but the use of this kind equipment has improved production cost of products, is unfavorable for the raising of enterprise product competitive ability.
The model utility content
The utility model technical problem to be solved is a kind of engine cylinder cap air discharging structure that can effectively improve exhaust airstream fluidised form and reduction pneumatic noise.
In order to solve the problems of the technologies described above; The technological scheme that the utility model adopted is: a kind of engine cylinder cap air discharging structure; Air outlet flue comprises the suction port that is positioned at the firing chamber and is positioned at the air outlet on the cylinder head sidewall; The cross section of the suction port of air outlet flue is circular, and the cross section of the air outlet of air outlet flue is oval, and air outlet flue integral body is transitted to the ellipse of air outlet gradually by the circle of suction port.
Said cylinder head is the aluminium alloy cylinder lid.
The utility model adopts technique scheme, and compared with prior art, air outlet flue transits to oval cross section gradually by the circular cross-section of circular suction port; Because under identical area of passage; Flat oval cross section more helps air-flow than circular cross-section steadily to be passed through, so the air discharging structure of oval cross section can effectively improve the exhaust airstream fluidised form, the reduction pneumatic noise; Through improvement to the cylinder cap structure, can effective cheaply noise reduction.
Description of drawings
Fig. 1 is the structural representation of the cylinder head of the utility model;
Fig. 2 is the sectional drawing of the air outlet flue of the utility model;
Mark among the above-mentioned figure is: 1, air outlet flue; 2, intake duct; 3, suction port; 4, air outlet.
Embodiment
Be illustrated in figure 1 as the cylinder head of motor; The cylinder cap base comprises four groups of intake ducts 2, air outlet flue 1 and firing chamber; A kind of engine cylinder cap air discharging structure of the utility model; Air outlet flue 1 comprises the suction port 3 that is positioned at the firing chamber and is positioned at the air outlet 4 on the cylinder head sidewall that the cross section of the suction port 3 of air outlet flue 1 is circular, as shown in Figure 2.In order to solve the problem that exists in the existing technology, the cross section of the air outlet 4 of the air outlet flue 1 of the utility model is oval, and as shown in Figure 1, air outlet flue 1 integral body is transitted to the ellipse of air outlet 4 gradually by the circle of suction port 3.Compared with prior art; Air outlet flue 1 transits to oval cross section gradually by the circular cross-section of circular suction port 3, because under identical area of passage, flat oval cross section more helps air-flow than circular cross-section steadily to be passed through; Therefore air outlet flue 1 structure of oval cross section can effectively be improved the exhaust airstream fluidised form; Reduce pneumatic noise, through improvement to the cylinder cap structure, can effective cheaply noise reduction.
Cylinder head is the aluminium alloy cylinder lid.
Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted the method design of the utility model and the improvement of the various unsubstantialities that technological scheme is carried out; Or the design of the utility model and technological scheme are directly applied to other occasion without improving, all within the protection domain of the utility model.
Claims (2)
1. engine cylinder cap air discharging structure; Air outlet flue comprises the suction port that is positioned at the firing chamber and is positioned at the air outlet on the cylinder head sidewall; The cross section of the suction port of air outlet flue is circular; It is characterized in that: the cross section of the air outlet of said air outlet flue is for oval, and air outlet flue integral body is transitted to the ellipse of air outlet gradually by the circle of suction port.
2. engine cylinder cap air discharging structure according to claim 1 is characterized in that: said cylinder head is the aluminium alloy cylinder lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220212616 CN202611912U (en) | 2012-05-14 | 2012-05-14 | Exhaust passage structure of engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220212616 CN202611912U (en) | 2012-05-14 | 2012-05-14 | Exhaust passage structure of engine cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611912U true CN202611912U (en) | 2012-12-19 |
Family
ID=47345618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220212616 Expired - Fee Related CN202611912U (en) | 2012-05-14 | 2012-05-14 | Exhaust passage structure of engine cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485922A (en) * | 2013-09-23 | 2014-01-01 | 安徽江淮汽车股份有限公司 | Engine cylinder cover air channel structure |
| CN112231824A (en) * | 2020-09-04 | 2021-01-15 | 东风汽车集团有限公司 | Rapid design method of exhaust pipeline flattening structure and exhaust silencer system |
-
2012
- 2012-05-14 CN CN 201220212616 patent/CN202611912U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485922A (en) * | 2013-09-23 | 2014-01-01 | 安徽江淮汽车股份有限公司 | Engine cylinder cover air channel structure |
| CN112231824A (en) * | 2020-09-04 | 2021-01-15 | 东风汽车集团有限公司 | Rapid design method of exhaust pipeline flattening structure and exhaust silencer system |
| CN112231824B (en) * | 2020-09-04 | 2023-04-18 | 东风汽车集团有限公司 | Rapid design method of exhaust pipeline flattening structure and exhaust silencer system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121219 Termination date: 20140514 |