CN202176402U - Combustion chamber structure for engine - Google Patents
Combustion chamber structure for engine Download PDFInfo
- Publication number
- CN202176402U CN202176402U CN2011201848382U CN201120184838U CN202176402U CN 202176402 U CN202176402 U CN 202176402U CN 2011201848382 U CN2011201848382 U CN 2011201848382U CN 201120184838 U CN201120184838 U CN 201120184838U CN 202176402 U CN202176402 U CN 202176402U
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- Prior art keywords
- cylinder head
- piston
- cylinder block
- cylinder
- combustion chamber
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 41
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000004200 deflagration Methods 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 9
- 238000007598 dipping method Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005474 detonation Methods 0.000 description 4
- 240000002836 Ipomoea tricolor Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Classifications
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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
本实用新型公开一种发动机燃烧室结构，包括活塞、汽缸体和汽缸头，所述活塞至上止点时由所述汽缸头、所述汽缸体和所述活塞顶部围成的密闭空间，汽缸头中围成密闭空间的一端为内凹的球面形状，汽缸头的球心点位于汽缸体的中心线上，汽缸头的球心点与汽缸头和汽缸体的结合面的垂直距离为21.5mm，汽缸头的球半径为33mm，汽缸头球面的顶点与汽缸头和汽缸体的结合面的垂直距离为11.5mm；汽缸头球面的两端向外倾斜，其倾斜角度为15°。与现有技术相比，本实用新型提供的发动机燃烧室结构，可大幅度提高火焰传播速度，减少循环波动，爆燃火焰传播距离均衡，无死区，混合气燃烧彻底，瞬间完成，实现稀燃和速燃，效率高，从而提高发动机的动力性与经济性。
The utility model discloses a combustion chamber structure of an engine, which comprises a piston, a cylinder body and a cylinder head. One end of the closed space enclosed in the middle is a concave spherical shape, the spherical center point of the cylinder head is located on the center line of the cylinder block, and the vertical distance between the spherical center point of the cylinder head and the joint surface of the cylinder head and the cylinder block is 21.5mm. The spherical radius of the cylinder head is 33mm, and the vertical distance between the vertex of the cylinder head spherical surface and the joint surface of the cylinder head and the cylinder block is 11.5mm; the two ends of the cylinder head spherical surface are inclined outward, and the inclination angle is 15°. Compared with the prior art, the engine combustion chamber structure provided by the utility model can greatly increase the flame propagation speed, reduce cycle fluctuations, balance the deflagration flame propagation distance, have no dead zone, complete combustion of the mixture gas, and realize lean combustion And fast combustion, high efficiency, thereby improving the power and economy of the engine.
Description
Technical field
The utility model relates to the motorcycle engine field, exactly is meant a kind of engine combustion chamber structure.
Background technique
The seal space that is surrounded by cylinder head, cylinder block and piston head three when engine chamber is piston to top dead center.The firing chamber is made up of cylinder head bottom and cylinder block, piston.The firing chamber is the key component of motorcycle engine; It all has bigger influence to harmful components in flame propagation, velocity of combustion, detonation tendency, radiation loss, volumetric efficiency and the exhaust of combustion process etc., and the measure of various improvement burnings is also many need be implemented in the firing chamber.Combustion-chamber shape and structure are the key factors of decision engine performance.
There are side-located gas-gate L type firing chamber and Overhead valve firing chamber in common more typical firing chamber at present; The latter is common has wedge-section combustion chamber, bathtub section combustion chamber L and hemispherical combustion chamber, wherein uses comparatively extensive with the hemispherical combustion chamber.But the firing chamber of this shape exists inflammable mixture velocity of propagation and compression not enough, incomplete combustion, and the thermal efficiency is lower, and exhaust pollution is also many, influences the performance of motor.
The model utility content
To above-mentioned defective, the technical problem that the utility model solves is to provide a kind of engine combustion chamber structure, can increase substantially velocity of propagation of flame; Reduce circular wave, the detonation flame travel is balanced, no dead band; Mixture combustion is thorough, and moment accomplishes, and realizes lean-burn and quick burning; Efficient is high, thereby improves the power character and the Economy of motor.
In order to solve above technical problem; The engine combustion chamber structure that the utility model provides; Comprise piston, cylinder block and cylinder head, confined space type of the being flying saucer shape structure that surrounds by said cylinder head, said cylinder block and said piston head during said piston to top dead center.
Preferably; An end that surrounds confined space in the said cylinder head is the spherical shape of indent; The centre of sphere point of said cylinder head is positioned on the center line of said cylinder block; The centre of sphere point of said cylinder head is 21.5mm with the perpendicular distance of the junction plane of said cylinder head and said cylinder block, and the radius of a ball of said cylinder head is 33mm, and the perpendicular distance of the junction plane of the summit of said cylinder head sphere and said cylinder head and said cylinder block is 11.5mm; The two ends of said cylinder head sphere are outward-dipping, and its angle of inclination is 15 °.
Preferably, the diameter of the outward-dipping formation groove in the two ends of said cylinder head sphere is 57.2mm.
Preferably; Said cylinder head is provided with spark-plug hole; The center line of said spark-plug hole center line and said cylinder block crosses has intersection point, and the perpendicular distance of the junction plane of said intersection point and said cylinder head and said cylinder block is 12.6mm, and the angle that the center line of said spark-plug hole center line and said cylinder block crosses is 39.5 °; The horizontal equivalent at the center, aperture of said intersection point and said spark-plug hole is 28mm, and the crow flight distance at the center, aperture of said intersection point and said spark-plug hole is 44mm.
Preferably; An end that surrounds confined space in the said piston is the spherical shape of indent; The centre of sphere point of said piston is positioned on the center line of said cylinder block; The radius of a ball is 109mm, and the perpendicular distance of the sphere summit of said piston and the junction plane of said cylinder head and said cylinder block is 3mm, and the diameter of said piston sphere extension is 50.8mm.
Preferably, be provided with the gap between the edge of said piston and the edge of said cylinder head, said clearance height is 1mm.
The engine combustion chamber structure that the utility model provides comprises piston, cylinder block and cylinder head, confined space type of the being flying saucer shape structure that is surrounded by said cylinder head, said cylinder block and said piston head during said piston to top dead center.Compared with prior art, the engine combustion chamber structure that the utility model provides can increase substantially velocity of propagation of flame; Reduce circular wave, the detonation flame travel is balanced, no dead band; Mixture combustion is thorough, and moment accomplishes, and realizes lean-burn and quick burning; Efficient is high, thereby improves the power character and the Economy of motor.
Description of drawings
Fig. 1 is the structural representation of engine combustion chamber structure in the existing technology;
Fig. 2 is the structural representation of engine combustion chamber structure in the utility model;
Fig. 3 is the structural representation of cylinder head in the engine combustion chamber structure in the utility model;
Fig. 4 is a structure of piston schematic representation in the engine combustion chamber structure in the utility model;
Fig. 5 is the structural representation that squeezes the stream zone in the utility model in the engine combustion chamber structure.
Wherein, respectively be denoted as among the figure:
The 1-cylinder head; The 2-piston; The 3-cylinder block; The 4-spark plug; 5-squeezes the stream zone; The horizontal equivalent at the center, aperture of L1-intersection point and spark-plug hole; The crow flight distance at the center, aperture of L2-intersection point and spark-plug hole; The perpendicular distance of the summit of H1-cylinder head sphere and the junction plane of cylinder head and cylinder block; The perpendicular distance of the centre of sphere point of H2-cylinder head and the junction plane of cylinder head and cylinder block; The perpendicular distance of the junction plane of H3-intersection point and cylinder head and cylinder block; The ball summit of H4-piston and the perpendicular distance of piston-top surface; Clearance distance between the edge of H5-piston and the edge of cylinder head; The outward-dipping angle of inclination, two ends of a1-cylinder head sphere; The angle that the center line of a2-spark-plug hole center line and cylinder block crosses; The centre of sphere point of 01-cylinder head; The intersection point that the center line of 02-spark-plug hole center line and cylinder block crosses; The center, aperture of 03-spark-plug hole; 04-piston-top surface ball center; The diameter of the outward-dipping formation groove in two ends of Φ 1-cylinder head sphere; The diameter of Φ 2-piston sphere extension.
Embodiment
For the technological scheme that those skilled in the art can understand the utility model better and provided, set forth below in conjunction with specific embodiment.
See also Fig. 1-Fig. 5, Fig. 1 is the structural representation of engine combustion chamber structure in the existing technology; Fig. 2 is the structural representation of engine combustion chamber structure in the utility model; Fig. 3 is the structural representation of cylinder head in the engine combustion chamber structure in the utility model; Fig. 4 is a structure of piston schematic representation in the engine combustion chamber structure in the utility model; Fig. 5 is the structural representation that squeezes the stream zone in the utility model in the engine combustion chamber structure.
The engine combustion chamber structure that the utility model provides comprises piston 2, cylinder block 3 and cylinder head 1, confined space type of the being flying saucer shape structure that is surrounded by cylinder head 1, cylinder block 3 and piston 2 tops during piston 2 to top dead center.Particularly:
An end that surrounds confined space in the cylinder head 1 is the spherical shape of indent; The centre of sphere point of cylinder head 1 is positioned on the center line of cylinder block 3; The radius of a ball of cylinder head 1 is 33mm; The centre of sphere point 01 of cylinder head 1 is 21.5mm with the perpendicular distance H2 of the junction plane of cylinder head 1 and cylinder block 3, and the perpendicular distance H1 of the junction plane of the summit of cylinder head sphere and cylinder head 1 and cylinder block 3 is 11.5mm; The two ends of cylinder head sphere are outward-dipping, and its angle of inclination a1 is 15 °.The diameter of the outward-dipping formation groove in the two ends of cylinder head sphere is 57.2mm.Cylinder head 1 is provided with spark-plug hole; Spark plug 4 is installed in the spark-plug hole; The center line of spark-plug hole center line and cylinder block crosses has intersection point 02, and intersection point 02 is 12.6mm with the perpendicular distance H3 of the junction plane of cylinder head 1 and cylinder block 3, and the angle a2 that the center line of spark-plug hole center line and cylinder block crosses is 39.5 °; Intersection point 02 is 28mm with the horizontal equivalent L1 at the center, aperture of spark-plug hole, and intersection point 02 is 44mm with the crow flight distance L2 at the center, aperture of spark-plug hole.The surface to volume ratio of chamber structure and volume are to produce the good main eddy current and the prerequisite of turbulence effects, and spark plug 4 shortens the propagation of flame distance in this position, make burning fast thoroughly, and moment accomplishes.
An end that surrounds confined space in the piston 2 is the spherical shape of indent, and the centre of sphere point of piston 2 is positioned on the center line of cylinder block 3, and the perpendicular distance H4 of the summit of piston 2 spheres and piston 2 end faces is 3mm, and the diameter of phi 2 of piston sphere extension is 50.8mm.An end that surrounds confined space in the piston 2 is the formed volume of shape that the spherical shape of indent cooperates cylinder head 1; Be that the main eddy current that will produce further mixes the key that forms good heating power mixed gas with turbulent flow in this volume; Reduce the cyclical variations rate; Accelerate velocity of combustion, realize high-effect burning.
Be provided with the gap between the edge of the edge of piston 2 and cylinder head 1, clearance height H5 is 1mm, and the firing chamber can form has certain crowded stream zone 5 of squeezing the stream effect.Should squeeze the stream effect and combine the main eddy current that the firing chamber produced further to mix the good heating power mixed gas of formation with turbulent flow, and increase velocity of propagation of flame, and enlarge the boundary of catching fire of mixed gas, rarer mixed gas that burns reduces the cyclical variations rate, accelerates velocity of combustion.
Compared with prior art, the engine combustion chamber structure that the utility model provides can increase substantially velocity of propagation of flame; Reduce circular wave, the detonation flame travel is balanced, no dead band; Mixture combustion is thorough, and moment accomplishes, and realizes lean-burn and quick burning; Efficient is high, thereby improves the power character and the Economy of motor.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201848382U CN202176402U (en) | 2011-06-02 | 2011-06-02 | Combustion chamber structure for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201848382U CN202176402U (en) | 2011-06-02 | 2011-06-02 | Combustion chamber structure for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202176402U true CN202176402U (en) | 2012-03-28 |
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ID=45866287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201848382U Expired - Fee Related CN202176402U (en) | 2011-06-02 | 2011-06-02 | Combustion chamber structure for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202176402U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615337A (en) * | 2013-12-09 | 2014-03-05 | 泰州市优力克机械制造有限公司 | Natural gas engine piston |
| CN106321276A (en) * | 2016-08-31 | 2017-01-11 | 中国第汽车股份有限公司 | Piston used for 1L direct injection gasoline engine spherical combustion chamber |
| CN109519299A (en) * | 2018-12-29 | 2019-03-26 | 昆山三动力有限公司 | Piston, internal combustion engine and motive power machine device |
-
2011
- 2011-06-02 CN CN2011201848382U patent/CN202176402U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615337A (en) * | 2013-12-09 | 2014-03-05 | 泰州市优力克机械制造有限公司 | Natural gas engine piston |
| CN106321276A (en) * | 2016-08-31 | 2017-01-11 | 中国第汽车股份有限公司 | Piston used for 1L direct injection gasoline engine spherical combustion chamber |
| CN109519299A (en) * | 2018-12-29 | 2019-03-26 | 昆山三动力有限公司 | Piston, internal combustion engine and motive power machine device |
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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: 20120328 Termination date: 20160602 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |