CN101718232A - Air passage structure for engine - Google Patents
Air passage structure for engine Download PDFInfo
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- CN101718232A CN101718232A CN200910259094A CN200910259094A CN101718232A CN 101718232 A CN101718232 A CN 101718232A CN 200910259094 A CN200910259094 A CN 200910259094A CN 200910259094 A CN200910259094 A CN 200910259094A CN 101718232 A CN101718232 A CN 101718232A
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- engine
- air
- air passage
- passage structure
- dividing plate
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Abstract
The invention provides an air passage structure for an engine, belongs to the technical field of engines, and solves the problems of great flow loss of incoming air, unreasonable flow speed distribution of the incoming air, irregular streamline of the incoming air, poor fuel oil atomization and insufficient mixing of fuel oil and air and the like caused by the limitation of the shape of the air passage in a conventional motorcycle engine. The air passage structure for the engine is arranged in a cylinder cover of the engine, and comprises an air intake passage and an air exhaust passage, wherein the air intake passage consists of a straight passage and a plurality of curved passages; and the curved passages are arranged close to a combustion chamber and are fixedly connected with the plurality of clapboards therein. The air passage structure for the engine is characterized by high combustion efficiency, good engine performance, low oil consumption and small discharge amount of tail gas.
Description
Technical field
The invention belongs to technical field of engines, particularly a kind of motorcycle engine air flue structure.
Background technique
The intake duct of motorcycle engine is the key position of engine design, enters the firing chamber after the mixing once more of fuel-air mixture through suction tude and intake duct, and acting drives motorcycle driving after the internal combustion of firing chamber.So the appropriate design of intake duct can provide more mixed gas for motor, and can form in cylinder and roll stream and eddy current, the turbulent flow in the cylinder is strengthened, fuel oil and Air mixing are more abundant, and it is faster more complete to burn, and that sends is more powerful.Yet the intake duct of present domestic motorcycle engine design great majority are all regulated flowing of air-flow by the trend of air flue and the size of sectional area of air passage, though these project organizations can satisfy general motorcycle engine performance demands, but along with further raising energy-conservation to motorcycle, that reduce discharging requirement, the air flue of original motorcycle is because the narrow limitation of its shape, make its air inlet flow losses big, intake flow velocity irrational distribution, air inlet streamline turbulence, cause fuel-oil atmozation difference and fuel oil and Air mixing insufficient, directly influence the performance and the discharging of motor.
Summary of the invention
The objective of the invention is to exist above-mentioned problem at existing technology, provide a kind of and can improve the induction air flow ratio of motor when low speed, can satisfy simultaneously the charging efficiency of motor when high speed again, improve engine combustion efficiency, reduce the air passage structure for engine of oil consumption.
Purpose of the present invention can realize by following technical proposal: a kind of air passage structure for engine, be arranged in the engine cylinder cover, comprise intake duct and air outlet channel, it is characterized in that, described intake duct is made up of straight way and a plurality of bend, and described bend is near the firing chamber and be fixed with several dividing plates in bend.
The main effect of dividing plate is exactly to improve the flow velocity of engine inlets air inlet gas and the streamline distribution of gas.The main implementation method of this dividing plate is exactly when engine speed is low, inhibition by dividing plate, improve the flow velocity of air inlet gas, and change gas flow by the reasonable Arrangement of dividing plate, gas is formed after entering the firing chamber roll and flow, strengthen the turbulence intensity of gas in the cylinder, improving the combustion efficiency of burning mixture, thereby improve engine performance, reduce oil consumption, reduce the exhaust emissions amount; After engine speed rises, because the dividing plate self through rationally being provided with has guide functions, its thickness is also thinner, inhibition to gas is less, charging efficiency influence to motor is little, and on the contrary, the guide functions of dividing plate self has been improved gas flow rate and streamline distribution, improved combustion efficiency, so high speed performance has small size lifting too.
In above-mentioned air passage structure for engine, described dividing plate is vertical arrangement along bend.Make dividing plate guide functions better effects if like this.
In above-mentioned air passage structure for engine, described adjacent dividing plate be arranged in parallel.
In above-mentioned air passage structure for engine, described dividing plate and bend are connected as a single entity.Like this at more convenient processing dividing plate and whole bend.
In above-mentioned air passage structure for engine, described dividing plate is fixed by welding on the bend.
In above-mentioned air passage structure for engine, described dividing plate quantity is 3～6.
In above-mentioned air passage structure for engine, described block board thickness is 0.5cm～0.7cm.
Compared with prior art, this air passage structure for engine passes through in distance air valve seat ring a distance, the dividing plate that utilizes the space at this place that difformity or varying number are set is organized the distribution of air-flow, flow velocity, flow direction and the streamline of charge air flow are changed, distribute to form desirable velocity field and pressure field, gas is formed after entering the firing chamber roll and flow, strengthen the turbulence intensity of gas in the cylinder, improving the combustion efficiency of burning mixture, thereby improve engine performance, reduce oil consumption, reduce the exhaust emissions amount.
Description of drawings
Fig. 1 is a sectional structure schematic representation of the present invention.
Fig. 2 is the structural representation of another layout of central diaphragm of the present invention.
Fig. 3 is the left side view of cylinder head.
Among the figure, 1, cylinder head; 2, intake duct; 21, straight way; 22, bend; 3, air outlet channel; 4, firing chamber; 5, suction valve cone; 6, the gate seat of giving vent to anger; 7, dividing plate.
Embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As Fig. 1, Fig. 2 and shown in Figure 3, this air passage structure for engine is arranged in the engine cylinder cover 1, comprise intake duct 2 and air outlet channel 3, intake duct 2 and air outlet channel 3 are oblique from both sides, cylinder head center respectively to be communicated with firing chamber 4, and intake duct 2 is the arc smooth transition with the interior walls of air outlet channel 3.Air flue is a tubular structure, and wherein intake duct 2 is made up of straight way 21 and a plurality of bend 22, and bend 22 is near firing chamber 4; Air outlet channel 3 is made up of several bends.Intake duct 2 is a suction valve cone 5 near the end of firing chamber 4, and air outlet channel 3 is the gate seat 6 of giving vent to anger near the end of firing chamber 4.
Be fixed with a plurality of dividing plates 7 in intake duct 2 bends 22, each block board thickness is 0.6cm, and dividing plate 7 is connected as a single entity with intake duct 2 and intake duct 2 bends 22 are divided into a plurality of chambers.Also can according to actual needs dividing plate 7 and intake duct 2 be designed to split formula structure, dividing plate 7 is fixed by welding on the bend 22.Each dividing plate 7 all is vertical arrangement along the bend 22 of intake duct 2, and the adjacent dividing plate 7 that is in same intake duct 2 bends 22 be arranged in parallel.The main effect of dividing plate 7 is exactly to improve the flow velocity of engine inlets 2 air inlet gases and the streamline distribution of gas.
The main implementation method of this dividing plate 7 is exactly when engine speed is low, when air inlet gas enters into bend 22 through the straight way 21 of intake duct 2, inhibition by dividing plate 7, air inlet gas is divided into the multiply air-flow and is entered into the chamber that is separated into by dividing plate 7 respectively by one air-flow, thereby improve the flow velocity of air inlet gas, and change gas flow by the reasonable Arrangement of dividing plate 7, making gas form to roll after entering firing chamber 4 flows, strengthen the turbulence intensity of gas in the cylinder, with the combustion efficiency of raising burning mixture, thereby improve engine performance, reduce oil consumption, reduce the exhaust emissions amount; After engine speed rises, because the dividing plate 7 through rationally being provided with self has guide functions, its thickness is also thinner, inhibition to gas is less, little to the influence of the charging efficiency of motor, on the contrary, the guide functions of dividing plate 7 self has been improved gas flow rate and streamline distribution, improved combustion efficiency, so high speed performance has small size lifting too.The middle low speed torque of this invention air passage structure has improved more than 8% than traditional air flue, and oil consumption has descended 10%, and original discharging reaches Europe II level.Therefore, this air passage structure for engine has improved every performance of motor comprehensively.
Claims (7)
1. air passage structure for engine, be arranged in the engine cylinder cover (1), comprise intake duct (2) and air outlet channel (3), it is characterized in that, described intake duct (2) is made up of straight way (21) and a plurality of bend (22), and described bend (22) is near firing chamber (4) and be fixed with several dividing plates (7) in bend (22).
2. air passage structure for engine according to claim 1 is characterized in that, described dividing plate (7) is vertical arrangement along bend (22).
3. air passage structure for engine according to claim 2 is characterized in that, described adjacent dividing plate (7) be arranged in parallel.
4. according to claim 1 or 2 or 3 described air passage structure for engine, it is characterized in that described dividing plate (7) is connected as a single entity with bend (22).
5. according to claim 1 or 2 or 3 described air passage structure for engine, it is characterized in that described dividing plate (7) is fixed by welding on the bend (22).
6. according to claim 1 or 2 or 3 described air passage structure for engine, it is characterized in that described dividing plate (7) quantity is 3～6.
7. according to claim 1 or 2 or 3 described air passage structure for engine, it is characterized in that described dividing plate (7) thickness is 0.5cm～0.7cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910259094A CN101718232A (en) | 2009-12-04 | 2009-12-04 | Air passage structure for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910259094A CN101718232A (en) | 2009-12-04 | 2009-12-04 | Air passage structure for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101718232A true CN101718232A (en) | 2010-06-02 |
Family
ID=42432854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910259094A Pending CN101718232A (en) | 2009-12-04 | 2009-12-04 | Air passage structure for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101718232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431697A (en) * | 2020-03-23 | 2021-09-24 | 上海汽车集团股份有限公司 | Cylinder head for an engine, engine and exhaust gas recirculation system |
-
2009
- 2009-12-04 CN CN200910259094A patent/CN101718232A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431697A (en) * | 2020-03-23 | 2021-09-24 | 上海汽车集团股份有限公司 | Cylinder head for an engine, engine and exhaust gas recirculation system |
| CN113431697B (en) * | 2020-03-23 | 2022-09-27 | 上海汽车集团股份有限公司 | Cylinder head for an engine, engine and exhaust gas recirculation system |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100602 |