CN101649789A - Cylinder head of internal combustion engine - Google Patents
Cylinder head of internal combustion engine Download PDFInfo
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- CN101649789A CN101649789A CN200810070115A CN200810070115A CN101649789A CN 101649789 A CN101649789 A CN 101649789A CN 200810070115 A CN200810070115 A CN 200810070115A CN 200810070115 A CN200810070115 A CN 200810070115A CN 101649789 A CN101649789 A CN 101649789A
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- cylinder head
- chamber
- die cavity
- valve chamber
- exhaust
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Abstract
The invention discloses a cylinder head of an internal combustion engine. The body of the cylinder head is provided with a die cavity, a combustion chamber, an inlet valve chamber, an exhaust valve chamber, valve guide pipes, an inlet duct and an exhaust duct, wherein the die cavity is positioned on the top of the body of the cylinder head; the combustion chamber is positioned at the bottom of thebody of the cylinder head; the inlet valve chamber and the exhaust valve chamber arranged in parallel are positioned between the die cavity and the combustion chamber; the inlet duct is communicatedwith the combustion chamber through the inlet valve chamber; the inlet valve chamber is also communicated with the die cavity through one valve guide pipe; the exhaust duct is communicated with the combustion chamber through the exhaust valve chamber; the exhaust valve chamber is also communicated with the die cavity through another valve guide pipe; and an included angle which is between 80 and 85 degrees is formed between the central line of the inlet duct and the central line of the exhaust duct. The cylinder head of the internal combustion engine can ensure the sufficient combustion of a combustible mixed gas to effectively reduce the oil consumption of the entire engine and reduce the exhaust pollution; and simultaneously, the cylinder head of the internal combustion engine can also reduce the thermal load of the engine and improve the dynamic property of the engine, and is suitable for various types of gasoline engines.
Description
Technical field
The present invention relates to gasoline engine part, relate in particular to the cylinder head on the general gasoline engines.
Background technique
The structure of gasoline engine cylinder head such as Fig. 4, shown in Figure 5, have die cavity 2 at the top of cylinder head body 1, it is oval-shaped firing chamber 3 that the bottom of cylinder head body 1 offers molded lines, two inlet and outlet door chambers 4,5 that are arranged side by side are between die cavity 2 and firing chamber 3, the bottom of inlet and outlet door chamber 4,5 is communicated with firing chamber 3, and the top of inlet and outlet door chamber 4,5 communicates with die cavity 2 by valve guide bushing 6 respectively.The left and right sides between described die cavity 2 and firing chamber 3 also is respectively arranged with intake duct 7 and air outlet flue 8, and wherein the inner port of intake duct 7 is communicated with intake valve chamber 4, and the external port of intake duct 7 communicates with the external world by Carburetor and empty filter; The inner port of air outlet flue 8 is communicated with exhaust valve chamber 5, and the external port of air outlet flue 8 also communicates with the external world by silencing apparatus.The gasoline engine cylinder head of above structure has the following disadvantages:
1, intake duct 7 and air outlet flue 8 are approximate 180 ° of distributions between die cavity 2 and firing chamber 3, be unfavorable for the formation of eddy current in the firing chamber 3, and the residual gas at place, spark plug gap can not in time be got rid of, inflammable mixture is not easy to catch fire in firing chamber 3 like this, make that burning is insufficient, cause complete machine oil consumption height, exhaust pollution amount big thus.
2, the molded lines of firing chamber 3 is oval, and volume ratio is bigger, and inlet and outlet door chamber and spark plug are arranged and disperseed, the distance of flame propagation and period of combustion are all long, rate of explosion mean value is low, makes that the heat load of motor is higher, is unfavorable for the raising of engine power performance.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of can make the clean-burning cylinder head of internal combustion engine of inflammable mixture.
Technological scheme of the present invention is as follows: a kind of cylinder head of internal combustion engine, has the cylinder head body, this cylinder head body is provided with die cavity, the firing chamber, the intake valve chamber, the exhaust valve chamber, valve guide bushing, intake duct and air outlet flue, wherein die cavity is positioned at the top of cylinder head body, the firing chamber is positioned at the bottom of cylinder head body, two advancing of being arranged side by side, the exhaust valve chamber is between die cavity and firing chamber, described intake duct communicates with the firing chamber by the intake valve chamber, this intake valve chamber also is communicated with die cavity by a valve guide bushing, described air outlet flue communicates with the firing chamber by the exhaust valve chamber, this exhaust valve chamber also is communicated with die cavity by another root valve guide bushing, it is characterized in that: the angle that has 80～85 ° between the center line of described intake duct and the center line of air outlet flue.
The present invention is changed into the inlet and outlet road on the basis of conventional construction and approaches 90 ° of arrangements by original approximate 180 ° of distributions, help the formation of intake swirl and the timely eliminating of the residual gas that the spark plug gap is located like this, make inflammable mixture in the firing chamber, can fully burn, effectively reduce the complete machine oil consumption thus, and reduced the exhaust pollution amount.Intake duct and air outlet flue angle spatially is advisable with 80～85 °, and angle is too small, and then the eddy current of Xing Chenging is strong excessively, can the burning of inflammable mixture be had a negative impact, and causes temperature too high, and engine heat load is higher; Angle is excessive, then is unfavorable for forming eddy current, does not reach corresponding clean-burning effect.
The molded lines of above-mentioned firing chamber is heart-shaped, compare with traditional oval molded lines, the combustion chamber volume of heart-shaped profile is smaller, it is compacter to make inlet and outlet door chamber and spark plug arrange, the distance of flame propagation and period of combustion are all shorter like this, thereby effectively reduce the heat load of motor, and help to improve the power character of motor.
Beneficial effect: the present invention have be skillfully constructed, simple in structure, implement easily, characteristics such as cost is lower, it can ensure that inflammable mixture fully burns, and effectively reduces the complete machine oil consumption, has reduced the exhaust pollution amount; Simultaneously, the present invention can also reduce the heat load of motor, and improves the power character of motor, all is suitable for for various types of petrol engine.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the molded lines schematic representation of firing chamber among the present invention.
Fig. 3 analyses and observe rotation diagram for the A-A of Fig. 2.
Fig. 4 is the structural representation of background technique.
Fig. 5 is the worm's eye view of Fig. 4.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As Fig. 1, Fig. 2 and shown in Figure 3, the cylinder head of general gasoline engines has cylinder head body 1, this cylinder head body 1 passes through die cast, cylinder head body 1 is provided with die cavity 2, firing chamber 3, intake valve chamber 4, exhaust valve chamber 5, valve guide bushing 6, intake duct 7 and air outlet flue 8, wherein die cavity 2 is positioned at the top of cylinder head body 1, firing chamber 3 is positioned at the bottom of cylinder head body 1, and the molded lines of this firing chamber 3 is heart-shaped, to shorten flame travel and period of combustion.Two inlet and outlet door chambers 4,5 that are arranged side by side are between die cavity 2 and firing chamber 3, and the bottom of inlet and outlet door chamber 4,5 is communicated with firing chamber 3, and the top of inlet and outlet door chamber 4,5 communicates with die cavity 2 by valve guide bushing 6 respectively.
From Fig. 1, Fig. 2 and Fig. 3 as can be known, described intake duct 7 and air outlet flue 8 also are arranged between die cavity 2 and the firing chamber 3, and wherein the inner port of intake duct 7 is communicated with intake valve chamber 4, and the external port of intake duct 7 is in the ear end face (see figure 1) of cylinder head body 1; The inner port of air outlet flue 8 is communicated with exhaust valve chamber 5, and the external port of air outlet flue 8 is in the left side of cylinder head body 1 (see figure 1).The angle that has 80～85 ° between the center line of the center line of described intake duct 7 and air outlet flue 8, the concrete size of this angle requires to decide according to reality, can be 80 °, 81 °, 82 °, 83 °, 84 ° or 85 °, and present embodiment is preferably 83 °.Inlet and outlet road 7,8 approaches 90 ° of arrangements among the present invention, help the formation of intake swirl and the timely eliminating of the residual gas that the spark plug gap is located like this, make inflammable mixture in the firing chamber, can fully burn, effectively reduce the complete machine oil consumption thus, and reduced the exhaust pollution amount.
Claims (2)
1, a kind of cylinder head of internal combustion engine, has cylinder head body (1), this cylinder head body (1) is provided with die cavity (2), firing chamber (3), intake valve chamber (4), exhaust valve chamber (5), valve guide bushing (6), intake duct (7) and air outlet flue (8), wherein die cavity (2) is positioned at the top of cylinder head body (1), firing chamber (3) is positioned at the bottom of cylinder head body (1), two advancing of being arranged side by side, exhaust valve chamber (4,5) be positioned between die cavity (2) and firing chamber (3), described intake duct (7) communicates with firing chamber (3) by intake valve chamber (4), this intake valve chamber (4) also is communicated with die cavity (2) by a valve guide bushing (6), described air outlet flue (8) communicates with firing chamber (3) by exhaust valve chamber (5), this exhaust valve chamber (5) also is communicated with die cavity (2) by another root valve guide bushing (6), it is characterized in that: the angle that has 80～85 ° between the center line of the center line of described intake duct (7) and air outlet flue (8).
2, a kind of cylinder head of internal combustion engine according to claim 1 is characterized in that: the molded lines of described firing chamber (3) is for heart-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810070115A CN101649789A (en) | 2008-08-14 | 2008-08-14 | Cylinder head of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810070115A CN101649789A (en) | 2008-08-14 | 2008-08-14 | Cylinder head of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101649789A true CN101649789A (en) | 2010-02-17 |
Family
ID=41672094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810070115A Pending CN101649789A (en) | 2008-08-14 | 2008-08-14 | Cylinder head of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101649789A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926884A (en) * | 2012-11-19 | 2013-02-13 | 力帆实业(集团)股份有限公司 | Cylinder head of general gasoline engine |
| CN110296019A (en) * | 2019-07-12 | 2019-10-01 | 江门市大长江集团有限公司 | A kind of internal combustion engine with novel air inlet path |
-
2008
- 2008-08-14 CN CN200810070115A patent/CN101649789A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926884A (en) * | 2012-11-19 | 2013-02-13 | 力帆实业(集团)股份有限公司 | Cylinder head of general gasoline engine |
| CN110296019A (en) * | 2019-07-12 | 2019-10-01 | 江门市大长江集团有限公司 | A kind of internal combustion engine with novel air inlet path |
| CN110296019B (en) * | 2019-07-12 | 2024-05-31 | 江门市大长江集团有限公司 | Internal combustion engine with novel air inlet channel |
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| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100217 |