CN203248262U - Cylinder cover with four-valve combustion chamber structure - Google Patents
Cylinder cover with four-valve combustion chamber structure Download PDFInfo
- Publication number
- CN203248262U CN203248262U CN 201320229172 CN201320229172U CN203248262U CN 203248262 U CN203248262 U CN 203248262U CN 201320229172 CN201320229172 CN 201320229172 CN 201320229172 U CN201320229172 U CN 201320229172U CN 203248262 U CN203248262 U CN 203248262U
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- China
- Prior art keywords
- face
- firing chamber
- cylinder head
- combustion chamber
- air valves
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- Expired - Fee Related
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses a cylinder cover with a four-valve combustion chamber structure. The cylinder cover comprises a cylinder cover body and a sparking plug. A combustion chamber face is formed in the lower end of the cylinder cover body in an inward-concave mode, the combustion chamber face is arranged of a four-valve structure, a sparking plug hole is formed in a position, perpendicular to the central line, of the combustion chamber face, and the sparking lug is a long type sparking plug which occupies a larger longitudinal space, cooling liquid channels of the cylinder cover can be lengthened and expanded, and the cooling liquid channels are arranged on the two sides of the sparking plug. Temperature near the combustion chamber face is lowered, so that temperature of mixed gases in a combustion chamber is lowered, and the purposes that the probability of spontaneous combustion of the mixed gases is reduced, and the occurrence probability of engine knock is lowered are achieved.
Description
Technical field
The utility model relates to the petrol engine engine art, particularly a kind of cylinder head with four air valves burning chamber structure.
Background technique
Engine chamber refers to the following formed space of its end face of piston arrives atdc and cylinder head bottom surface, and motor fuel namely does work at firing chamber internal combustion pushing piston.Bottom surface, cylinder head lower end indent forms the firing chamber face, and firing chamber face and piston-top surface consist of the firing chamber jointly, and the parameter of firing chamber is the necessary condition that guarantees engine high-efficiency operation.Spark plug is petrolic ignition mechanism, and it introduces the firing chamber with high-tension electricities of volts up to ten thousand, thereby and produces electrical spark and light mixed gas and make piston work done, engine output.
Mixed gas in the firing chamber need to lean on spark ignitor, but under high temperature and high pressure environment, some of mixed gas becomes branch's spontaneous combustion, and then cause unordered burning in the firing chamber, sometimes the carbon deposit of inside, firing chamber also can produce Mars under high temperature, thereby not to the igniting the moment just light mixed gas, the flame ripple that spontaneous combustion forms and regular burning fire crest of flame clash into and the generation enormous pressure, so that motor produces abnormal knock, form pinking, therefore in engine production, in order to reduce the engine knock odds, for the installation precision of spark plug and the specification of spark plug very high requirement is arranged.In the prior art, the firing chamber face is provided with spark-plug hole, the spark plug mounting types that several angle is arranged with firing chamber face vertical center line that adopt, this kind mounting type the lighting of mixed gas in the firing chamber can not exert an influence to reducing the engine knock probability more yet.
Therefore, need to the mounting type of spark plug and firing chamber be improved, can reduce near the temperature of firing chamber face that cylinder head lower end indent forms, thereby reduce the temperature of mixed gas in the firing chamber, reach the probability that reduces the mixed gas spontaneous combustion, and then reduce the occurrence probability of engine knock.
The model utility content
In view of this, the utility model provides a kind of cylinder head with four air valves burning chamber structure, can reduce near the temperature of firing chamber face that cylinder head lower end indent forms, thereby the temperature of mixed gas in the reduction firing chamber, reach the probability that reduces the mixed gas spontaneous combustion, and then reduce the occurrence probability of engine knock.
Cylinder head with four air valves burning chamber structure of the present utility model, comprise the firing chamber face that engine cylinder cap lower end indent forms and the spark plug that is arranged at described firing chamber face is installed, face vertical center line place, described firing chamber arranges spark-plug hole, and described spark plug is long-reach plug.
Further, mind-set cylinder head intake and exhaust both sides form two plane of inclination in the edge, face top, described firing chamber.
Further, form the ridge area of protuberance between described two plane of inclination, described long-reach plug is perpendicular to described ridge area setting.
Further, described firing chamber face is that four air valve structures are arranged, which is provided with two inlet valve ports and two exhaust valve ports, described inlet valve port and exhaust valve port biserial are symmetricly set on described two plane of inclination.
Further, described firing chamber face is many spheric structures, and corresponding each the described inlet valve port in described engine cylinder cap lower end and exhaust valve port indent form four separate spherical flare pits.
Further, between described firing chamber face circumferential outer edge and the described cylinder head end face for seamlessly transitting structure.
The beneficial effects of the utility model: the cylinder head with four air valves burning chamber structure of the present utility model, spark plug is arranged at the vertical center line place of firing chamber face, and spark plug is long-reach plug, occupy larger longitudinal space, can prolong and expand the head coolant passage that is positioned at the spark plug both sides, reduce near the temperature the face of firing chamber, thereby reduce the temperature of mixed gas in the firing chamber, reach the probability that reduces the mixed gas spontaneous combustion, and then reduce the occurrence probability of engine knock.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the utility model cross-sectional view;
Fig. 2 is that Figure 1A is to view.
Embodiment
Fig. 1 is the utility model cross-sectional view, Fig. 2 is that Figure 1A is to view, as shown in the figure: the cylinder head with four air valves burning chamber structure of the present embodiment, comprise cylinder cap body 1 and spark plug 2, the firing chamber face 3 that described cylinder cap body 1 lower end indent forms, described firing chamber face 3 is that four air valve structures are arranged, face 3 vertical center line places in described firing chamber arrange spark-plug hole 4, and described spark plug 2 is long-reach plug; Long-reach plug refers to that the insulation skirt section of spark plug is long and take long longitudinal space in cylinder head, long-reach plug has the advantages such as caloric receptivity is large, stain resistance is good, and can prolong and expand the head coolant passage that is positioned at the spark plug both sides, reduce near the temperature of firing chamber face.
In the present embodiment, mind-set cylinder head intake and exhaust both sides form two plane of inclination in the edge, face 3 tops, described firing chamber; Form two inclination attachment faces, be easy to the installation adjustment of engine intake valve and exhaust valve, make engine charge and exhaust smooth and easy.
In the present embodiment, form the ridge area of protuberance between described two plane of inclination, described long-reach plug is perpendicular to described ridge area setting; Spark plug vertically arranges, and igniting is convenient, and the assurance combination gas is fully burnt.
In the present embodiment, described firing chamber face is provided with two inlet valve ports 5 and two exhaust valve ports 6, and described inlet valve port and exhaust valve port biserial are symmetricly set on described two plane of inclination; Simple in structure, be beneficial to intake valve and exhaust valve is in tilted layout.
In the present embodiment, described firing chamber face is many spheric structures, and corresponding each the described inlet valve port in described cylinder cap body lower end and exhaust valve port indent form four separate spherical flare pits 7; Four spherical flare pits consist of the firing chamber face jointly, enlarge firing chamber face combination gas area of contact, and one by one corresponding inlet valve port and exhaust valve port setting, guarantee that exhaust and air inlet are smooth and easy.
In the present embodiment, between described firing chamber face circumferential outer edge and the described cylinder head end face for seamlessly transitting structure; Prevent that stress is concentrated.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1. cylinder head with four air valves burning chamber structure, comprise cylinder cap body and spark plug, the firing chamber face that described cylinder cap body lower end indent forms, described firing chamber face is that four air valve structures are arranged, it is characterized in that: face vertical center line place, described firing chamber arranges spark-plug hole, and described spark plug is long-reach plug.
2. the cylinder head with four air valves burning chamber structure according to claim 1 is characterized in that: face top, described firing chamber along in mind-set cylinder head intake and exhaust both sides form two plane of inclination.
3. the cylinder head with four air valves burning chamber structure according to claim 2 is characterized in that: form the ridge area of protuberance between described two plane of inclination, described long-reach plug is perpendicular to described ridge area setting.
4. the cylinder head with four air valves burning chamber structure according to claim 3, it is characterized in that: described firing chamber face is provided with two inlet valve ports and two exhaust valve ports, and described inlet valve port and exhaust valve port biserial are symmetricly set on described two plane of inclination.
5. the cylinder head with four air valves burning chamber structure according to claim 4, it is characterized in that: described firing chamber face is many spheric structures, and corresponding each the described inlet valve port in described cylinder cap body lower end and exhaust valve port indent form four separate spherical flare pits.
6. the cylinder head with four air valves burning chamber structure according to claim 5 is characterized in that: between described firing chamber face circumferential outer edge and the described cylinder head end face for seamlessly transitting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229172 CN203248262U (en) | 2013-04-28 | 2013-04-28 | Cylinder cover with four-valve combustion chamber structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229172 CN203248262U (en) | 2013-04-28 | 2013-04-28 | Cylinder cover with four-valve combustion chamber structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203248262U true CN203248262U (en) | 2013-10-23 |
Family
ID=49374707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320229172 Expired - Fee Related CN203248262U (en) | 2013-04-28 | 2013-04-28 | Cylinder cover with four-valve combustion chamber structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203248262U (en) |
-
2013
- 2013-04-28 CN CN 201320229172 patent/CN203248262U/en not_active Expired - Fee Related
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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: 20131023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |