CN205172721U - Supercharged engine combustion chamber - Google Patents
Supercharged engine combustion chamber Download PDFInfo
- Publication number
- CN205172721U CN205172721U CN201520890202.8U CN201520890202U CN205172721U CN 205172721 U CN205172721 U CN 205172721U CN 201520890202 U CN201520890202 U CN 201520890202U CN 205172721 U CN205172721 U CN 205172721U
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- CN
- China
- Prior art keywords
- cylinder
- concave crown
- boss
- supercharged engine
- firing chamber
- 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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- 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
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses a supercharged engine combustion chamber, including cylinder, piston, (air) intake valve, exhaust valve and spark plug, piston sliding connection in in the cylinder, the exhaust valve sets up in the upper left portion of the cylinder cap of cylinder side by side, the (air) intake valve sets up in the upper right portion of the cylinder cap of cylinder, the spark plug sets up the cylinder cap middle part at the cylinder, the bottom of cylinder cap is equipped with the upwards first concave crown of concave yield, the top of piston is equipped with the second concave crown of downward concave yield, and the combustion chamber body lies in between first concave crown and the second concave crown, the both ends of first concave crown are equipped with the first boss that extends to the both sides level respectively, the both ends of second concave crown are equipped with the second boss that extends to the both sides level respectively, first boss with be equipped with the crowded district of flowing between the second boss. The problem of turbulent flow a little less than, engine knock, noise are big etc is solved.
Description
Technical field
The utility model relates to the design field of engine chamber, particularly a kind of supercharged engine firing chamber.
Background technique
Firing chamber is that fuel or propellant agent burn wherein and generate the device of high-temperature fuel gas.It is the vitals of gas turbine engine, pressed engine, rocket motor.Space between piston arrives atdc its top and cylinder head, namely fuel burn in this room.When the piston is at the top dead center, the space formed more than piston-top surface, below cylinder head bottom surface is called firing chamber.At present, on motorcar engine, the normal firing chamber used mostly is hemispherical combustion chamber, and this chamber structure is compact, and spark plug is arranged in firing chamber central authorities, and flame travel is short, and combustion efficiency is high.Four valve structure can be adopted, increase inflation exhaust efficiency.This firing chamber disadvantage is exactly do not organize to squeeze stream, and turbulent flow is more weak, easily causes pinking when low speed, high load working condition, and noise is comparatively large, and that particularly embodies on small displacement, high load supercharged engine is obvious.Result often causes the combustion characteristic of motor not ideal enough, cannot meet the requirement of the current power performance to small displacement engine, economic performance and emission level.
Summary of the invention
The utility model is to solve deficiency of the prior art, and providing one, to solve turbulent flow more weak, the supercharged engine firing chamber of the large problem of engine knock, noise.
The technological scheme of a kind of supercharged engine firing chamber of the utility model is:
A kind of supercharged engine firing chamber, comprise cylinder, piston, intake valve, exhaust valve and spark plug, described piston is slidably connected in described cylinder, described exhaust valve is disposed in parallel in the cylinder cap upper left quarter of cylinder, described intake valve is arranged on the cylinder cap upper right quarter of cylinder, described spark plug is arranged in the middle part of the cylinder cap of cylinder, the bottom of described cylinder cap is provided with the first upwards recessed concave crown, the top of described piston is provided with the second concave crown recessed down, combustion chamber body is between described first concave crown and the second concave crown, the two ends of described first concave crown are respectively equipped with the first boss to both sides horizontal-extending, the two ends of described second concave crown are respectively equipped with the second boss to both sides horizontal-extending, Ji Liu district is provided with between described first boss and described second boss.
The technological scheme of a kind of supercharged engine firing chamber of the utility model can also be:
Be provided with between described exhaust valve towards the first recessed recess of described spark plug, be provided with between described intake valve towards the second recessed recess of described spark plug.
The lateral cross section of described combustion chamber body is provided with the first fillet, and the longitudinal cross-section of described combustion chamber body is provided with the second fillet.
The radius of described first fillet is 30mm, and the radius of described second fillet is 14.9mm.
Distance between described first concave crown peak and described second concave crown minimum point is the height of described combustion chamber body, and the height of described combustion chamber body is 12.7-14mm.
The height in described Ji Liu district is 1.1-1.3mm.
The diameter of described intake valve is greater than the diameter of described exhaust valve.
A kind of supercharged engine firing chamber of the utility model, comprise cylinder, piston, intake valve, exhaust valve and spark plug, described piston is slidably connected in described cylinder, described exhaust valve is disposed in parallel in the cylinder cap upper left quarter of cylinder, described intake valve is arranged on the cylinder cap upper right quarter of cylinder, described spark plug is arranged in the middle part of the cylinder cap of cylinder, the bottom of described cylinder cap is provided with the first upwards recessed concave crown, the top of described piston is provided with the second concave crown recessed down, combustion chamber body is between described first concave crown and the second concave crown, the two ends of described first concave crown are respectively equipped with the first boss to both sides horizontal-extending, the two ends of described second concave crown are respectively equipped with the second boss to both sides horizontal-extending, Ji Liu district is provided with between described first boss and described second boss.Like this, intake valve supplies air and the fuel mixture of variable concentrations in cylinder body, piston slides towards cylinder cap direction relative to cylinder body, and then the air that have compressed in cylinder body and fuel mixture, after the compression of piston to air and fuel mixture reaches certain decrement, plug ignition, air and fuel mixture are in firing chamber combustion, now, be heat energy by chemical energy, and the air in cylinder body and fuel mixture are expanded after heating, then promote piston slide towards the direction deviating from cylinder cap and do work, heat energy is converted into mechanical energy again, and then propelling vehicle motion, after combustion chambers burn, waste gas discharges cylinder by exhaust valve, motor is made to have good power character and Economy.And, the setting of the second concave crown, coordinate the first concave crown bottom cylinder cap in shape, piston can be made to compress air and fuel mixture in the middle of two side direction, avoiding piston head in prior art is flat-top, and makes in the process of pressurized air and fuel mixture, and gas extrusion is uneven, and the more weak problem of turbulent flow produced, thus avoid the problems such as engine knock, noise are large.And first setting in Ji Liu district between boss and the second boss, piston can being made when pushing gas towards cylinder cap, by Ji Liu district air and fuel mixture being expressed in firing chamber and can making full use of air in cylinder body and fuel mixture.
Accompanying drawing explanation
The schematic diagram of a kind of supercharged engine firing chamber of Fig. 1 the utility model;
The sectional schematic diagram of a kind of supercharged engine firing chamber of Fig. 2 the utility model;
A kind of supercharged engine firing chamber of Fig. 3 the utility model is along the schematic diagram of A-A plane cutting in Fig. 2;
A kind of supercharged engine firing chamber of Fig. 4 the utility model along B-B plane cutting in Fig. 2 schematic diagram;
Figure number explanation
1 ... piston 2 ... exhaust valve 3 ... cylinder cap 4 ... spark plug 5 ... intake valve 6 ... first concave crown 7 ... second concave crown 8 ... first boss 9 ... second boss 10 ... first recess 11 ... second recess 12 ... Ji Liu district 13 ... the height 14 of combustion chamber body ... first fillet 15 ... second fillet 16 ... combustion chamber body 17 ... cylinder
Embodiment
Below in conjunction with specific embodiment, a kind of supercharged engine firing chamber of the present utility model is further described.
As Figure 1-4, a kind of supercharged engine firing chamber, comprise gas 17, piston 1, intake valve 5, exhaust valve 2 and spark plug 4, described piston 1 is slidably connected in described cylinder 17, described exhaust valve 2 is disposed in parallel in cylinder cap 3 upper left quarter of cylinder 17, described intake valve 5 is arranged on cylinder cap 3 upper right quarter of cylinder 17, described spark plug 4 is arranged in the middle part of the cylinder cap 3 of cylinder 17, the bottom of described cylinder cap 3 is provided with the first upwards recessed concave crown 6, the top of described piston 1 is provided with the second concave crown 7 recessed down, combustion chamber body 16 is between described first concave crown 6 and the second concave crown 7, the two ends of described first concave crown 6 are respectively equipped with the first boss 8 to both sides horizontal-extending, the two ends of described second concave crown 7 are respectively equipped with the second boss 9 to both sides horizontal-extending, Ji Liu district 12 is provided with between described first boss 8 and described second boss 9.Like this, intake valve 5 supplies air and the fuel mixture of variable concentrations in cylinder body, piston 1 slides towards cylinder cap 3 direction relative to cylinder body, and then the air that have compressed in cylinder body and fuel mixture, after the compression of piston 1 pair of air and fuel mixture reaches certain decrement, spark plug 4 is lighted a fire, air and fuel mixture are in firing chamber combustion, now, be heat energy by chemical energy, and the air in cylinder body and fuel mixture are expanded after heating, then promote piston 1 slide towards the direction deviating from cylinder cap 3 and do work, heat energy is converted into mechanical energy again, and then propelling vehicle motion, after combustion chambers burn, waste gas discharges cylinder 17 by exhaust valve 2, motor is made to have good power character and Economy.And, the setting of the second concave crown 7, coordinate the first concave crown 6 bottom cylinder cap 3 in shape, piston 1 can be made to compress air and fuel mixture in the middle of two side direction, avoiding piston 1 top in prior art is flat-top, and makes in the process of pressurized air and fuel mixture, and gas extrusion is uneven, and the more weak problem of turbulent flow produced, thus avoid the problems such as engine knock, noise are large.And first setting in Ji Liu district 12 between boss 8 and the second boss 9, piston 1 can being made when pushing gas towards cylinder cap 3, by Ji Liu district 12 air and fuel mixture being expressed in firing chamber and can making full use of air in cylinder body and fuel mixture.
See accompanying drawing 1-4, a kind of supercharged engine firing chamber of the present utility model is on the basis of technique scheme, can be: be provided with between described exhaust valve 2 towards the first recessed recess 10 of described spark plug 4, be provided with between described intake valve 5 towards the second recessed recess 11 of described spark plug 4.Like this, the setting of the first recess 10 and the second recess 11, increase the first boss 8 of the first concave crown 6 and the second concave crown 7 both sides and the lateral separation of the second boss 9, be conducive to Ji Liu district 12, in the stroke of piston 1, stream squeezed to gas, improve the more weak problem of firing chamber turbulent flow.Accelerate air and the velocity of liquid assets of fuel mixture in firing chamber, improving combustion efficiency.Preferred technological scheme can also be further: the lateral cross section of described combustion chamber body 16 is provided with the first fillet 14, and the longitudinal cross-section of described combustion chamber body 16 is provided with the second fillet 15.Like this, the setting of the first fillet 14 and the second fillet 15, has become circular shape by the top design of firing chamber, is conducive to air and fuel mixture and assembles in the middle of firing chamber, can Thorough combustion air and fuel mixture, improves the working efficiency of firing chamber.
See accompanying drawing 1-4, a kind of supercharged engine firing chamber of the present utility model is on the basis of technique scheme, and Ke Yishi: the radius of described first fillet 14 is 30mm, the radius of described second fillet 15 is 14.9mm.Distance between described first concave crown 6 peak and described second concave crown 7 minimum point is the height 13 of described combustion chamber body, and the height 13 of described combustion chamber body is 12.7-14mm.The height in described Ji Liu district 12 is 1.1-1.3mm.Like this, by experiment, the chamber structure of above-mentioned size has effectively adapted to the working environment of small displacement high load.Particularly on three cylinder turbosupercharged engines, by adjustment combustion chamber dimensions, the different compression ratios such as 9.5: 1,11: 1,12: 1 can be designed.
See accompanying drawing 1-4, a kind of supercharged engine firing chamber of the present utility model on the basis of technique scheme, Ke Yishi: the diameter of described intake valve 5 is greater than the diameter of described exhaust valve 2.Like this, participate in burning to obtain more air, therefore, need more air inlet, intake valve 5 just needs larger diameter, and in order to reduce space hold amount, makes layout compacter, and exhaust valve 2 will be designed to relatively little diameter.
Above-mentionedly only a kind of specific embodiment in the utility model to be illustrated; but can not as protection domain of the present utility model; every equivalence made according to the design spirit in the utility model changes or modifies, and all should think and fall into protection domain of the present utility model.
Claims (7)
1. a supercharged engine firing chamber, it is characterized in that: comprise cylinder, piston, intake valve, exhaust valve and spark plug, described piston is slidably connected in described cylinder, described exhaust valve is disposed in parallel in the cylinder cap upper left quarter of cylinder, described intake valve is arranged on the cylinder cap upper right quarter of cylinder, described spark plug is arranged in the middle part of the cylinder cap of cylinder, the bottom of described cylinder cap is provided with the first upwards recessed concave crown, the top of described piston is provided with the second concave crown recessed down, combustion chamber body is between described first concave crown and the second concave crown, the two ends of described first concave crown are respectively equipped with the first boss to both sides horizontal-extending, the two ends of described second concave crown are respectively equipped with the second boss to both sides horizontal-extending, Ji Liu district is provided with between described first boss and described second boss.
2. a kind of supercharged engine firing chamber according to claim 1, is characterized in that: be provided with between described exhaust valve towards the first recessed recess of described spark plug, is provided with towards the second recessed recess of described spark plug between described intake valve.
3. a kind of supercharged engine firing chamber according to claim 1 and 2, it is characterized in that: the lateral cross section of described combustion chamber body is provided with the first fillet, the longitudinal cross-section of described combustion chamber body is provided with the second fillet.
4. a kind of supercharged engine firing chamber according to claim 3, is characterized in that: the radius of described first fillet is 30mm, and the radius of described second fillet is 14.9mm.
5. a kind of supercharged engine firing chamber according to claim 1 and 2, it is characterized in that: the distance between described first concave crown peak and described second concave crown minimum point is the height of described combustion chamber body, and the height of described combustion chamber body is 12.7-14mm.
6. a kind of supercharged engine firing chamber according to claim 1 and 2, is characterized in that: the height in described Ji Liu district is 1.1-1.3mm.
7. a kind of supercharged engine firing chamber according to claim 1 and 2, is characterized in that: the diameter of described intake valve is greater than the diameter of described exhaust valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520890202.8U CN205172721U (en) | 2015-11-10 | 2015-11-10 | Supercharged engine combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520890202.8U CN205172721U (en) | 2015-11-10 | 2015-11-10 | Supercharged engine combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172721U true CN205172721U (en) | 2016-04-20 |
Family
ID=55736723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520890202.8U Expired - Fee Related CN205172721U (en) | 2015-11-10 | 2015-11-10 | Supercharged engine combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172721U (en) |
-
2015
- 2015-11-10 CN CN201520890202.8U patent/CN205172721U/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: 20160420 Termination date: 20211110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |