CN201794675U - Squeeze-flow type compact combustion system with high compression ratio - Google Patents
Squeeze-flow type compact combustion system with high compression ratio Download PDFInfo
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- CN201794675U CN201794675U CN2010202960506U CN201020296050U CN201794675U CN 201794675 U CN201794675 U CN 201794675U CN 2010202960506 U CN2010202960506 U CN 2010202960506U CN 201020296050 U CN201020296050 U CN 201020296050U CN 201794675 U CN201794675 U CN 201794675U
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- cylinder cap
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- cylinder cover
- combustion system
- intake valves
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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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Abstract
The utility model relates to a squeeze-flow type compact combustion system with high compression ratio, which mainly solves the technical problems that a hemispherical combustion chamber adopted by an existing four-stroke gasoline internal-combustion engine has no squeezing surface and the like. The squeeze-flow type compact combustion system is characterized in that the periphery of a cylinder cover is recessed towards the center so that a squeezing surface is formed on the peripheral edge of the cylinder cover, two groups of oppositely arranged intake valves and exhaust valves are arranged in the cylinder cover to form a tent-shaped combustion chamber, a mounting hole is arranged in the center of the cylinder cover and positioned among the two groups of intake valves and exhaust valves, and a spark plug is placed inside the mounting hole. The squeeze-flow type compact combustion system has the advantages that the cylinder cover is changed into a tent-shaped structure, the two groups of intake valves and exhaust valves are arranged on the cylinder cover to form the tent-shaped combustion chamber so that the structure not only is compact, but also is squeezed by the squeezing surface on the periphery of the cylinder cover, oil-gas mixing performance is improved so that oil and gas can be combusted sufficiently and the compression ratio of the tent-shaped combustion chamber can reach more than 10:1, and the average effective pressure of an engine can be improved effectively by the aid of the high compression ratio, so that the engine has higher heat efficiency and output power is improved.
Description
Technical field
The utility model relates to a kind of combustion system, relates to a kind of crowded streaming compact type high compression ratio combustion system in particular, is mainly used in the four-stroke gasoline field of internal combustion engine.
Background technique
The existing combustion system that is used for the four-stroke gasoline internal-combustion engine adopts the dual valve structure mostly, tilting on cylinder cap have intake valve and exhaust valve to form the hemispherical combustion chamber, adopt the combustion system of the four-stroke gasoline internal-combustion engine of this structure, because volume is bigger near the spark plug, easily make the rate of pressure rise excessive, rough running, turbulent flow relatively a little less than, the low speed and load poor stability; Secondly, the hemispherical combustion chamber does not have the squish face, compressed mixed gas eddy current a little less than, easily generation detonation when the big load of low speed can not be satisfied the demand of four-stroke gasoline internal-combustion engine.
Summary of the invention
In order to solve the deficiency of the combustion system existence that has the four-stroke gasoline internal-combustion engine now, the utility model provides a kind of crowded streaming compact type high compression ratio combustion system, this system has the characteristics of high rotating speed, high compression ratio, high power per liter, low emission, can effectively satisfy the demand of four-stroke gasoline internal-combustion engine.
For solving above technical problem, the technological scheme that the utility model is taked is that a kind of crowded streaming compact type high-shrinkage compares combustion system, it includes cylinder body, cylinder cap and places the interior piston of cylinder body, described cylinder cap is provided with the intake valve of bringing air flue into and the exhaust valve of being with air outlet flue, on described cylinder cap spark plug is installed; It is characterized in that described cylinder cap is provided with two groups of intake valves that are oppositely arranged all around in central concave surrounding portion forms squish face and cylinder cap and exhaust valve forms fluffy shape firing chamber, be centered close between two groups of intake valves and the exhaust valve at described cylinder cap and be provided with mounting hole, described spark plug places in the mounting hole.
Further, the gas-entered passageway inlet end of two groups of intake valves on the described cylinder cap pools together and forms a suction port; The outlet side, exhaust passage of two groups of exhaust valves on the described cylinder cap pools together and forms a relief opening.
The beneficial effects of the utility model are to change cylinder cap into fluffy shape structure and be oppositely arranged two groups of intake valves and exhaust valve forms fluffy shape firing chamber on cylinder cap, the not only compact and extruding by the compressive plane around the cylinder cap of this spline structure, improve the oil gas mixed performance, oil gas can fully be burnt, make tail gas meet the HC standard; Secondly, change the firing chamber into fluffy shape structure, the compression ratio in the fluffy shape firing chamber is reached more than 10: 1, the high compression specific energy effectively improves the mean effective pressure of motor, makes motor have the higher thermal efficiency, improves the output power of motor.
Description of drawings
Fig. 1 is the broken section structural drawing of a kind of crowded streaming compact type high compression ratio combustion system of the utility model embodiment;
Fig. 2 is the sectional view of the utility model embodiment cylinder cap;
Fig. 3 is the three-dimensional structure diagram of the utility model embodiment cylinder cap.
Embodiment
Below in conjunction with accompanying drawing the utility model mode of execution is described further:
As shown in Figure 1 to Figure 3, the utility model is that a kind of crowded streaming compact type high-shrinkage compares combustion system, it includes cylinder body 1, cylinder cap 2 and places piston 3 in the cylinder body 1, described cylinder cap 2 is provided with the intake valve 21 of bringing air flue 211 into and the exhaust valve 22 of being with air outlet flue 221, on described cylinder cap 2 spark plug 4 is installed; For the hemispherical combustion chamber that solves existing four-stroke gasoline internal combustion engine combustion system does not have the squish face, compressed mixed gas eddy current a little less than, technical problems such as detonation easily take place when the big load of low speed; In forming squish face 23 and cylinder cap 2, central concave surrounding portion is provided with two groups of intake valves that are oppositely arranged 21 and the fluffy shape of exhaust valve 22 formation firing chamber 5 around the described cylinder cap 2, be centered close between two groups of intake valves 21 and the exhaust valve 22 at described cylinder cap 2 and be provided with mounting hole 24, described spark plug 4 places in the mounting hole 24; Original hemispherical combustion chamber is changed into fluffy shape firing chamber 5 and be oppositely arranged two groups of intake valves 21 and exhaust valve 22 on cylinder cap 2, this spline structure relative compact, form to wind through intake duct 211 and intake valve 21 at mixed airflow and flow in the cylinder perpendicular to rolling of cylinder body 1 axial direction rotation, arrive budc at compression stroke later stage piston 3, mixed airflow is owing to be subjected to the squeezing action of the compressive plane 23 of cylinder cap 2, tangentially enter fluffy shape firing chamber 4, outwards move along sidewall in the back in mixed airflow arrives fluffy shape firing chamber 4, the stream that rolls of having strengthened air-flow moves, produce the gas flow-disturbing of suitable intensity simultaneously, elaioleucite in the fluffy shape firing chamber 4 is disperseed rapidly, thereby quickened oil gas mixed process, shortened delay period, fluffy shape firing chamber 4 because surface to volume ratio (being the long-pending ratio with volume of combustor surface) less, thermal loss is little, and the thermal efficiency is improved.In addition, because of the Quench face reduces, can reduce the discharging of HC; Secondly, and make flame travel very short at the spark plug 3 of the center arrangement of cylinder cap 2, flame front is very wide, and the very high and may command of the rate of burning of mixed gas is difficult for taking place pinking; Adopt this structure, compare with two valve hemispherical combustion chambers, the fluffy shape of four valves firing chamber 4 can improve 50% with the inlet and outlet circulation area, compares with two valve bathtub section combustion chamber Ls, and the inlet and outlet circulation area can improve 100%.Like this, owing to can obtain higher volumetric efficiency in whole engine speed range, the peak torque that obtains in intermediate engine speed just can remain to very high engine speed and tangible decline can not occur usually, avoids occurring deflagration phenomenon; And change the firing chamber into fluffy shape structure, compression ratio in the fluffy shape firing chamber 4 is reached more than 10: 1, because the power per liter of motor is directly proportional with cylinder effective pressure, engine speed, what the power per liter height was then represented displacement utilizes degree high more, the high compression specific energy effectively improves the mean effective pressure of motor, make motor have the higher thermal efficiency, improve the output power of motor.
Shown in Fig. 3 embodiment, because each cylinder of four-stroke gasoline explosive motor has only one group of suction port and relief opening, be the synchronous air inlet and the exhaust of convenient two groups of intake valves 21 and exhaust valve 22, gas-entered passageway 211 inlet ends of two groups of intake valves 21 on the described cylinder cap 2 pool together and form a suction port 212; 221 outlet sides, exhaust passage of two groups of exhaust valves 22 on the described cylinder cap 2 pool together and form a relief opening 222, adopt this structure, under the situation that does not increase cylinder body 1 volume, just can make the synchronous air inlet and the exhaust of two groups of intake valves 21 and exhaust valve 22, thereby guarantee that mixed gass in the fluffy shape firing chamber 4 fully mix and burns, shorten delay period raising engine output.
The foregoing description should not be considered as restriction of the present utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (2)
1. a crowded streaming compact type high-shrinkage is than combustion system, and it includes cylinder body, cylinder cap and places the interior piston of cylinder body, and described cylinder cap is provided with the intake valve of bringing air flue into and the exhaust valve of being with air outlet flue, on described cylinder cap spark plug is installed; It is characterized in that described cylinder cap is provided with two groups of intake valves that are oppositely arranged all around in central concave surrounding portion forms squish face and cylinder cap and exhaust valve forms fluffy shape firing chamber, be centered close between two groups of intake valves and the exhaust valve at described cylinder cap and be provided with mounting hole, described spark plug places in the mounting hole.
2. a kind of crowded streaming compact type high-shrinkage according to claim 1 is characterized in that than combustion system the gas-entered passageway inlet end of two groups of intake valves on the described cylinder cap pools together suction port of formation; The outlet side, exhaust passage of two groups of exhaust valves on the described cylinder cap pools together and forms a relief opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202960506U CN201794675U (en) | 2010-08-18 | 2010-08-18 | Squeeze-flow type compact combustion system with high compression ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202960506U CN201794675U (en) | 2010-08-18 | 2010-08-18 | Squeeze-flow type compact combustion system with high compression ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794675U true CN201794675U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202960506U Expired - Lifetime CN201794675U (en) | 2010-08-18 | 2010-08-18 | Squeeze-flow type compact combustion system with high compression ratio |
Country Status (1)
| Country | Link |
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| CN (1) | CN201794675U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104590584A (en) * | 2014-12-26 | 2015-05-06 | 哈尔滨工业大学 | Satellite on-orbit embedded type test system |
| CN109281750A (en) * | 2018-09-25 | 2019-01-29 | 宁波吉利罗佑发动机零部件有限公司 | A kind of high compression engine combustion chamber |
| CN110886647A (en) * | 2019-11-21 | 2020-03-17 | 重庆长安汽车股份有限公司 | Gasoline engine combustion chamber and automobile |
| CN113944543A (en) * | 2021-08-31 | 2022-01-18 | 东风汽车集团股份有限公司 | Gasoline engine combustion system, gasoline engine assembly and vehicle |
| CN115111049A (en) * | 2022-01-12 | 2022-09-27 | 长城汽车股份有限公司 | High-turbulence kinetic energy combustion system and engine |
-
2010
- 2010-08-18 CN CN2010202960506U patent/CN201794675U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104590584A (en) * | 2014-12-26 | 2015-05-06 | 哈尔滨工业大学 | Satellite on-orbit embedded type test system |
| CN104590584B (en) * | 2014-12-26 | 2015-12-02 | 哈尔滨工业大学 | Satellite is embedded test system in-orbit |
| CN109281750A (en) * | 2018-09-25 | 2019-01-29 | 宁波吉利罗佑发动机零部件有限公司 | A kind of high compression engine combustion chamber |
| CN110886647A (en) * | 2019-11-21 | 2020-03-17 | 重庆长安汽车股份有限公司 | Gasoline engine combustion chamber and automobile |
| CN113944543A (en) * | 2021-08-31 | 2022-01-18 | 东风汽车集团股份有限公司 | Gasoline engine combustion system, gasoline engine assembly and vehicle |
| CN115111049A (en) * | 2022-01-12 | 2022-09-27 | 长城汽车股份有限公司 | High-turbulence kinetic energy combustion system and engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150917 Address after: Wuzhou 311100 Hangzhou Road, Zhejiang province Yuhang District of Yuhang Economic Development Zone No. 116 Patentee after: Zhejiang Cfmoto Power Co., Ltd. Address before: 325600 Xi Xi industrial zone, Hongqiao Town, Wenzhou, Zhejiang, Yueqing Patentee before: Chunfeng Holding Group Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110413 |