CN104879204B - A kind of combustion chamber of petrol engine - Google Patents
A kind of combustion chamber of petrol engine Download PDFInfo
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- CN104879204B CN104879204B CN201510223941.6A CN201510223941A CN104879204B CN 104879204 B CN104879204 B CN 104879204B CN 201510223941 A CN201510223941 A CN 201510223941A CN 104879204 B CN104879204 B CN 104879204B
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- Prior art keywords
- combustion chamber
- exhaust valve
- inlet valve
- combustion
- valve
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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 invention discloses a kind of combustion chamber of petrol engine, which includes inlet valve and exhaust valve, further includes being arranged in combustion chamber and close to the spark plug of the exhaust valve；The inlet valve and exhaust valve has the drop of height and position, and the gas channel for making the two mutually unicom and connecting the spark plug is provided between the inlet valve and exhaust valve.The combustion chamber is depressed on cylinder cover, and maximum cross-section is located at the bottom of the cylinder cover.Its advantage：The utilization rate of fresh combustion mixture can be improved, improve the dynamic property of rate of flame propagation and gasoline engine；Inflation effect is strong, and mixture combustion is abundant, is convenient for highly organized In-cylinder flow, adapts to lean-burn or layer combustion；The position of the exhaust valve above carries, and makes its forming position drop between inlet valve, is easy to implement the local heating of gas, promotes air in cylinder to form turbulent motion, highly organized combustion process is conducive to the recycling of tissue combustion chamber exhaust gas, reduces NOxDischarge.
Description
Technical field
The present invention relates to a kind of combustion chambers for internal combustion engine, it is more particularly related to a kind of new structural
Combustion chamber of petrol engine.
Background technology
Those skilled in the art know that internal combustion engine In-cylinder flow has decision to the formation of gaseous mixture and combustion process
The influence of property, and thus affect the discharge of the dynamic property, economy, combustion noise and harmful exhaust of engine.Therefore tissue is good
Good In-cylinder flow for improve the rate of flame propagation of gasoline engine, reduce Combustion Cycle Variability, be allowed to adapt to lean-burn or
Layer burner has extremely important effect.
The combustion chambers of internal combustion engines of the prior art, basic structure are bath-tub type or dome-type, that is, belong to the knot of regular shape
Structure, although the combustion chamber of the structure is low using generally, there are economy, turbulent motion is weak and exhaust emissions are high
The problems such as.
Invention content
The purpose of the present invention is exactly to solve the problems, such as gasoline engine combustion of the existing technology, and providing a kind of new construction thus
Burn room.
The technical scheme is that：
A kind of combustion chamber of petrol engine, including inlet valve and exhaust valve further include being arranged in combustion chamber and close to the row
The spark plug of valve is provided with the gas for making the two mutually unicom and connecting the spark plug between the inlet valve and exhaust valve
Circulation road.
The height of the inlet valve is less than the height of the exhaust valve, the drop size of the inlet valve and the exhaust valve
For H=1~15mm, optimal selection is H=6~10mm.
The inlet valve center line is ɑ=0 °~70 ° with the exhaust valve center line angulation.
The outside dimensions of both the inlet valve and the exhaust valve is L=50~110mm.
The combustion chamber is depressed on cylinder cover, and maximum cross-section is located at the bottom of the cylinder cover.
The present invention overcomes the abnormity knots that problems of the existing technology, especially combustion chamber are different from the prior art
Structure has the function of that increasing in-cylinder air motion and stratification of hot gas, advantage is：
(1) simple in structure, setting is reasonable, and the utilization rate of fresh combustion mixture can be improved, to improve flame propagation speed
The dynamic property of rate and gasoline engine, and increase economic efficiency in succession；
(2) inflation effect is strong, and mixture combustion is abundant, is convenient for highly organized In-cylinder flow, adapts to lean-burn or layer
Combustion；
(3) position of the exhaust valve above carries, and so that it is formed a position drop between inlet valve, and in the combustion chamber
The small space for forming a part, is easy to implement the local heating of gas, to promote air in cylinder to form turbulent motion, tissue
Good combustion process；
(4) be conducive to the recycling of tissue combustion chamber exhaust gas, reduce NOxDischarge.
Description of the drawings
Fig. 1 is the three dimensional structure diagram of the present invention；
Fig. 2 is the structural schematic diagram of the present invention；
Fig. 3 is the vertical view of Fig. 2.
Specific implementation mode
In order to make technical scheme of the present invention be easier to be understood, it is made with detailed with reference to the accompanying drawings and examples
It describes in detail bright.
Fig. 1 illustrates the set-up mode of the present invention with 3-D view.
As seen from Figure 1, combustion chamber of petrol engine of the invention is the polymorphic structure that combustion chamber is different from the prior art, the burning
Room is depressed in cylinder cover, and maximum cross-section is located at the bottom of the cylinder cover.
Fig. 2, Fig. 3 illustrate the structure situation of the present invention in the form of front view and vertical view respectively.
From Figure 2 it can be seen that the combustion chamber of petrol engine of the present invention includes the inlet valve 1 shared with the prior art and exhaust valve 4, also
Including the spark plug 3 being arranged in combustion chamber, being provided between the inlet valve 1 and exhaust valve 4 makes the two mutually unicom simultaneously
And connect the gas channel 2 of the spark plug 3；Unlike the prior art：The inlet valve 1 and exhaust valve 4 has height
The drop of position is spent, according to the needs of actual conditions, the inlet valve 1 can be set and be less than exhaust valve 4 (embodiment as shown),
Meanwhile the outside dimensions that both the inlet valve 1 and the exhaust valve 4 is arranged is L=50~110mm.
In order to reduce the Combustion fluctuation between each cycle and make end gas is heated to reduce, convenient for being swept using incoming mixture
Except the residual gas around spark plug, while gaseous mixture being made to be easy to light, the spark plug 3 is positioned close to institute by the present invention
State the position of exhaust valve 4.
As seen from Figure 3, the center line of the center line of the inlet valve 1 and the exhaust valve 4 can ɑ at an angle, the angle
The size of degree can be varied from according to drop size different between the inlet valve 1 and exhaust valve 4, variation range ɑ
=0 °~70 °.Such setting can make the gas channel 2 between the inlet valve 1 and exhaust valve 4 have good squish
Vertical inclined-plane, then, during piston stroking upward, the air-flow in 4 space of exhaust valve is entered from the space of the inlet valve 1 to be led to
The rub valve port of the exhaust valve 4 of overscan promotes temperature, and passes through organic knot of tumble flow and turbulent flow along the surface of the exhaust valve 4
Conjunction forms charge stratification, to make the higher mixing gas-bearing formation of concentration pass through at the spark plug 3 and realize igniting.
Gas flowing in order to form appropriate intensity in the combustion chamber increases end gaseous mixture to accelerate flame propagation
It is cooling, Combustion Cycle Variability is reduced, is conducive to the realization that lean-burn or layer fire, and fuel vapor is made to form optimal mixing in the combustion chamber
Gas turbulent flow mode, realizes the technical purpose for improving efficiency of combustion, and the present invention is by the height fall of the inlet valve 1 and exhaust valve 4
It is set as H=1~15mm, wherein effect when with H=6~10mm is best.
The present invention is depressed in the combustion chamber of petrol engine in cylinder cover, bath-tub type compared with the prior art or dome-type internal combustion
There is good practicability, the set-up mode of polymorphic structure not only to overcome economy of the existing technology for machine combustion chamber
It is low, turbulent motion is weak and exhaust gas discharges insufficient problem, and efficiency of combustion is effectively increased, for exploitation high-performance, low
The engine of pollution has established important foundation.
Above by reference to drawings and examples, schematic description of the technical scheme of the invention is schematically described, which does not limit
Property processed.Those skilled in the art should understand that in practical applications, each technical characteristic may occur certain in the present invention
Variation, and other staff may also make similar Design under its enlightenment.In particular, it should be pointed out that：Without departing from the present invention
Design aim, all obvious variations in detail or similar Design are all included in the scope of protection of the present invention.
Claims (4)
1. a kind of combustion chamber of petrol engine, including inlet valve and exhaust valve further include being arranged in combustion chamber and close to the exhaust
The spark plug of door, being provided between the inlet valve and the exhaust valve makes the two mutually unicom and connects the spark plug
Gas channel, it is characterised in that：The height of the inlet valve is less than the height of the exhaust valve, and the inlet valve and the row
Drop size between valve is H=1~15mm, and the inlet valve center line is with the exhaust valve center line angulation
ɑ=0 °~70 °.
2. a kind of combustion chamber of petrol engine according to claim 1, it is characterised in that：The inlet valve and the exhaust valve it
Between drop size be H=6~10mm.
3. a kind of combustion chamber of petrol engine according to claim 1, it is characterised in that：The inlet valve and the exhaust valve two
The outside dimensions of person is L=50~110mm.
4. a kind of combustion chamber of petrol engine according to claim 1, it is characterised in that：The combustion chamber is depressed in cylinder cover
On, maximum cross-section is located at the bottom of the cylinder cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223941.6A CN104879204B (en) | 2015-05-05 | 2015-05-05 | A kind of combustion chamber of petrol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223941.6A CN104879204B (en) | 2015-05-05 | 2015-05-05 | A kind of combustion chamber of petrol engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104879204A CN104879204A (en) | 2015-09-02 |
| CN104879204B true CN104879204B (en) | 2018-10-02 |
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ID=53946851
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510223941.6A Active CN104879204B (en) | 2015-05-05 | 2015-05-05 | A kind of combustion chamber of petrol engine |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707500A (en) * | 2019-01-07 | 2019-05-03 | 浙江康思特动力机械有限公司 | The combustion chamber of multivalve engine and valve arrangement structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4883030A (en) * | 1987-11-26 | 1989-11-28 | Toyota Jidosha Kabushiki Kaisha | Combustion chamber of a two-stroke engine |
| CN2864141Y (en) * | 2006-01-26 | 2007-01-31 | 重庆宗申技术开发研究有限公司 | Cylinder cover of motorcycle engine |
| CN201047303Y (en) * | 2006-11-22 | 2008-04-16 | 浙江钱江摩托股份有限公司 | Burning chamber of overhead camshaft type motorcycle engine |
| CN204591456U (en) * | 2015-05-05 | 2015-08-26 | 天津内燃机研究所 | A kind of combustion chamber of petrol engine |
-
2015
- 2015-05-05 CN CN201510223941.6A patent/CN104879204B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4883030A (en) * | 1987-11-26 | 1989-11-28 | Toyota Jidosha Kabushiki Kaisha | Combustion chamber of a two-stroke engine |
| CN2864141Y (en) * | 2006-01-26 | 2007-01-31 | 重庆宗申技术开发研究有限公司 | Cylinder cover of motorcycle engine |
| CN201047303Y (en) * | 2006-11-22 | 2008-04-16 | 浙江钱江摩托股份有限公司 | Burning chamber of overhead camshaft type motorcycle engine |
| CN204591456U (en) * | 2015-05-05 | 2015-08-26 | 天津内燃机研究所 | A kind of combustion chamber of petrol engine |
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| Publication number | Publication date |
|---|---|
| CN104879204A (en) | 2015-09-02 |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 300072 Tianjin Institute of internal combustion engine, Tianjin University, No. 92, Weijin Road, Tianjin University, Tianjin Applicant after: Tianjin internal combustion engine Research Institute (Tianjin Motorcycle Technology Center) Address before: 300072 Tianjin Institute of internal combustion engine, Tianjin University, No. 92, Weijin Road, Tianjin University, Tianjin Applicant before: Tianjin Internal-combustion Engine Inst. |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201201 Address after: No.92, Weijin Road, New Technology Industrial Park, Nankai District, Tianjin 300072 Patentee after: Tianjin Zhaoxia Motorcycle Technology Development Co.,Ltd. Patentee after: TIANJIN INTERNAL COMBUSTION ENGINE Research Institute (TIANJIN MOTORCYCLE TECHNICAL CENTER) Address before: Tianjin internal combustion engine research Tianjin 300072 Nankai District Wei Jin Road No. 92 in Tianjin University Patentee before: TIANJIN INTERNAL COMBUSTION ENGINE Research Institute (TIANJIN MOTORCYCLE TECHNICAL CENTER) |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210603 Address after: Room 2-3402, No.88 Huanhe South Road, pilot free trade zone (Airport Economic Zone), Binhai New Area, Tianjin Patentee after: Tianjin Zhongke Technology Development Co.,Ltd. Patentee after: TIANJIN INTERNAL COMBUSTION ENGINE Research Institute (TIANJIN MOTORCYCLE TECHNICAL CENTER) Address before: No.92, Weijin Road, New Technology Industrial Park, Nankai District, Tianjin 300072 Patentee before: Tianjin Zhaoxia Motorcycle Technology Development Co.,Ltd. Patentee before: TIANJIN INTERNAL COMBUSTION ENGINE Research Institute (TIANJIN MOTORCYCLE TECHNICAL CENTER) |