CN106884707A - Combustion system and the engine with it - Google Patents
Combustion system and the engine with it Download PDFInfo
- Publication number
- CN106884707A CN106884707A CN201710201276.XA CN201710201276A CN106884707A CN 106884707 A CN106884707 A CN 106884707A CN 201710201276 A CN201710201276 A CN 201710201276A CN 106884707 A CN106884707 A CN 106884707A
- Authority
- CN
- China
- Prior art keywords
- spark plug
- combustion system
- engine
- cylinder cap
- cylinder
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 31
- 230000000644 propagated effect Effects 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4285—Shape or arrangement of intake or exhaust channels in cylinder heads of both intake and exhaust channel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B2023/102—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the spark plug being placed offset the cylinder centre axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B2023/106—Tumble flow, i.e. the axis of rotation of the main charge flow motion is horizontal
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a kind of combustion system, including air intake duct, exhaust duct, spark plug, cylinder cap and piston, the spark plug is on the cylinder cap for the position of arranged off-centre and spark plug is located at the exhaust side of cylinder cap.Combustion system of engine of the invention, is arranged using eccentric spark plug, can improve the anti-knock properties of engine, solves the knock problem of engine, is improved high speed cylinder flame and is propagated inhomogeneities, increases dynamic property during high engine speeds.Present invention also offers a kind of engine.
Description
Technical field
The invention belongs to technical field of engines, specifically, the present invention relates to a kind of combustion system and the hair with it
Motivation.
Background technology
Along with domestic Macro-economic situation enter economic development " new normality ", and just undertaking the after 80s of family's important task and
The main force as Automobile Market after 90s, domestic type car is in the peak phase that family purchases vehicle.Car is improving
While living convenient, the problem of energy shortage and environmental crisis is also brought.Regarding to the issue above, China was in January 1 in 2015
Day has promulgated fourth stage fuel economy regulation.It is that in face of national oil consumption and Abgasgesetz, research institution and enterprise expedite the emergence of out a series of
New technology of gasoline engine.Wherein, gasoline engine supercharging miniaturization, high compression ratio, Miller cycle and in cold EGR technology be increasingly becoming
The developing direction of engine technology of new generation.
Above-mentioned technology application effect depends on that one of factor is, improves In Cylinder Flow tubulence energy level.Wherein, using height
Tumble inlet port is common technology scheme, but when engine occurs at a high speed such as rotating speed>4000r/min, cylinder flame propagation side
To can substantially be partial to exhaust side, with the increase of engine speed, inhomogeneities is more obvious, anti-knock properties reduction, and influence is at a high speed
External characteristics dynamic property, especially engine power rating.Although can be slow with reference to optimization piston pit shape using small valve inclination angle
Solution flame propagation problem of non-uniform, but during actual development, production line restructuring cost is limited, small valve inclination angle technical side
Case difficulty or ease are realized.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention provides a kind of combustion
Burning system and the engine with it, it is therefore an objective to improve engine anti-knock properties.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：Combustion system, including air intake duct, row
Air flue, spark plug, cylinder cap and piston, the spark plug is on the cylinder cap for the position of arranged off-centre and spark plug is located at cylinder cap
Exhaust side.
The air intake duct is tumble inlet port high.
The spark plug is located at two middle positions of exhaust valve on the cylinder cap.
The spark plug is to be vertically arranged, and the axis of spark plug is parallel with cylinder centerline.
The spark plug has angle to be obliquely installed between the axis and cylinder centerline of spark plug.
Angle between the axis of the spark plug and the cylinder centerline is 2~6 °.
The distance between the electrode centers of the spark plug and the internal face of cylinder cap minimum value is 3~5mm.
The electrode centers of the spark plug are located between top dead centre and the top surface of the electrode centers of spark plug and the piston
Apart from minimum value be 3~5mm.
The top surface of the piston sets pit, and pit is set for the eccentric and exhaust side is partial at the center of pit.
Present invention also offers a kind of engine, including above-mentioned combustion system.
Combustion system of engine of the invention, is arranged using eccentric spark plug, can improve the anti-knock properties of engine, is solved
The knock problem of engine, improves high speed cylinder flame and propagates inhomogeneities, solves cylinder flame during high speed and passes inclined problem, increases
Dynamic property during high engine speeds.
Brief description of the drawings
Fig. 1 is the sectional view of combustion system of the present invention；
Mark in above-mentioned figure is：1st, air intake duct；2nd, spark plug；3rd, exhaust duct；4th, cylinder cap；5th, pit；6th, piston is recessed
Hole center line；7th, sparking-plug electrode center line；8th, cylinder centerline；9th, piston；10th, cylinder cap baseplane parallel lines；11st, oil spout
Device；
θ is spark plug inclination angle；It is fuel injector inclination angle；LeIt is sparking-plug electrode center and the beeline of cylinder centerline；
LpIt is the center line and cylinder centerline beeline of piston crater.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, further details of is made to specific embodiment of the invention
Explanation, it is therefore an objective to help those skilled in the art to have more complete, accurate and deep reason to design of the invention, technical scheme
Solution, and contribute to it to implement.
As shown in figure 1, the invention provides a kind of combustion system, including air intake duct 1, exhaust duct 3, spark plug 2, cylinder cap 4,
Piston 9 and fuel injector 11, air intake duct 1 are connected with the air inlet of cylinder cap 4, and exhaust duct 3 is connected with the exhaust outlet of cylinder cap 4, fuel injector
11 are arranged on cylinder cap 4 and positioned at the sidepiece of air intake duct 1, and spark plug 2 is arranged off-centre and the position of spark plug 2 on cylinder cap 4
Positioned at the exhaust side of cylinder cap 4.
Specifically, as shown in figure 1, forming the cavity of combustion chamber between air intake duct 1, exhaust duct 3, cylinder cap 4 and piston 9,
Air intake duct 1 is preferably tumble inlet port high.The arranged off-centre of spark plug 2 in exhaust side, and on two exhaust valve center lines, spark
Plug 2 is located at two middle positions of exhaust valve on cylinder cap 4.
As shown in figure 1, fuel injector 11 is to be obliquely installed on cylinder cap, if the length direction of fuel injector 11 is put down with the bottom of cylinder cap
Angle between face (plane perpendicular with piston centreline on cylinder cap) isBe acute angle, the electrode centers of spark plug 2 with
Beeline between cylinder centerline is 4~8mm, and spark plug 2 is set for the eccentric, and specific eccentric distance can be according to rated power
The uniformity design of point flame propagation.The fuel injector 11 of directly jetting gasoline engine is 25~35 ° with crankshaft center line angle, and specific angle can root
Confirm according to CFD emulation (the English full name of CFD is Computational Fluid Dynamics).
As shown in figure 1, spark plug 2 is to be obliquely installed, if the angle between the axis and cylinder centerline of spark plug 2 is θ,
θ is spark plug inclination angle, and according to structure limitation and actual combustion mixture needs, inclination angle theta is 2~6 °.When in sparking-plug electrode
The heart in the top dead centre of piston, the minimum distance between sparking-plug electrode center and surrounding inboard wall of cylinder cover face and underlying piston top surface
It is 3mm~5mm.
As shown in figure 1, the top surface of piston is provided with pit 5, pit 5 is set for the eccentric and the center deflection of pit 5 is vented
Side, the center line of pit 5 and the eccentricity L of cylinder centerline beeline, i.e. pit centrespIt is 5~10mm.It is recessed by adjusting
5 position on piston of hole, and the setting angle of fuel injector 11 is adjusted, cooperation can be with shape near eccentric spark plug ignitor
Into rational mixture strength.
The combustion chamber uses Four valve structure, and with two inlet valves and two exhaust valves, cylinder cap bottom surface is using flat
Can be with oblique squish structure, whether integrated exhaust duct is can be with.Inlet and outlet door can be arranged using small valve inclination angle.Inlet valve
Can be needed using non-equiangularly arranged also dependent on actual arrangement using equiangularly arranged with exhaust valve angle.
The combustion system of engine of said structure, with advantages below：
After petrol engine uses tumble inlet port high, rotating speed flame propagation problem of non-uniform high is brought therewith, influence
External characteristics dynamic property is lifted.Typically alleviated using small valve inclination angle scheme, but during gasoline engine product up-gradation, early stage is not adopted
With the program, larger cost adjustment production line need to be just spent；Or dynamic property when reducing high engine speeds.And petrol engine is used
The combustion system of said structure, it is not necessary to adjust production line, by CFD simulation analysis, confirms spark plug eccentric distance and electrode
Depth, fuel injector setting angle (or nozzle oil beam angle degree) and piston crater location matches are risen up into, it is limited in the production line transformation of the way
In the case of, effectively solve to pass inclined problem using high-speed flame after tumble inlet port high；Or in small valve inclination angle technology base
On plinth, with reference to eccentric spark plug arrangement, more improve combustion flame propagation uniformity, burning center of gravity shifts to an earlier date and can also improve each circulation
Burning uniformity.
Present invention also offers a kind of engine, including said structure combustion system.The concrete structure of this combustion system
Fig. 1 is can refer to, be will not be repeated here.Because engine of the invention includes the combustion system in above-described embodiment, so it has
There are all advantages of above-mentioned combustion system.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented and do not receive aforesaid way
Limitation, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and design of the invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.
Claims (10)
1. combustion system, including air intake duct, exhaust duct, spark plug, cylinder cap and piston, it is characterised in that：The spark plug is in institute
State the position on cylinder cap for arranged off-centre and spark plug and be located at the exhaust side of cylinder cap.
2. combustion system according to claim 1, it is characterised in that：The air intake duct is tumble inlet port high.
3. combustion system according to claim 1, it is characterised in that：The spark plug is located at two exhausts on the cylinder cap
The middle position of door.
4. combustion system according to claim 1, it is characterised in that：The spark plug is to be vertically arranged, the axle of spark plug
Line is parallel with cylinder centerline.
5. combustion system according to claim 1, it is characterised in that：The spark plug is to be obliquely installed, the axle of spark plug
There is angle between line and cylinder centerline.
6. combustion system according to claim 5, it is characterised in that：The axis of the spark plug and the cylinder centerline
Between angle be 2~6 °.
7. according to any described combustion system of claim 1 to 6, it is characterised in that：In the electrode of the spark plug with it is described
The distance between internal face of cylinder cap minimum value is 3~5mm.
8. according to any described combustion system of claim 1 to 7, it is characterised in that：The electrode centers of the spark plug are located at
The distance between the electrode centers of top dead centre and spark plug and the top surface of piston minimum value is 3~5mm.
9. according to any described combustion system of claim 1 to 8, it is characterised in that：The top surface of the piston sets pit, recessed
Hole is set for the eccentric and exhaust side is partial at the center of pit.
10. engine, it is characterised in that：Including any described combustion system of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201276.XA CN106884707B (en) | 2017-03-30 | 2017-03-30 | Combustion system and engine with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201276.XA CN106884707B (en) | 2017-03-30 | 2017-03-30 | Combustion system and engine with it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106884707A true CN106884707A (en) | 2017-06-23 |
| CN106884707B CN106884707B (en) | 2018-09-21 |
Family
ID=59182414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710201276.XA Active CN106884707B (en) | 2017-03-30 | 2017-03-30 | Combustion system and engine with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106884707B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578130A (en) * | 2017-09-29 | 2019-04-05 | Ifp新能源公司 | Internal combustion engine with the direct fuel injection along charge motion direction |
| CN115182825A (en) * | 2022-08-22 | 2022-10-14 | 浙江吉利控股集团有限公司 | Methanol engine and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176338A (en) * | 1996-08-12 | 1998-03-18 | 马自达汽车株式会社 | Direct fuel injection engine |
| US6725828B1 (en) * | 2003-06-17 | 2004-04-27 | Ford Global Technologies, Llc | Vortex-induced stratification combustion for direct injection spark ignition engines |
| CN1916375A (en) * | 2005-08-05 | 2007-02-21 | 雅马哈发动机株式会社 | Internal combustion engine with ignition plug and vehicle provided with the same |
| CN101900026A (en) * | 2010-07-05 | 2010-12-01 | 天津大学 | Wall-guided in-cylinder direct injection gasoline engine combustion chamber |
| CN203856595U (en) * | 2014-04-29 | 2014-10-01 | 长城汽车股份有限公司 | Cylinder cover for engine and engine with cylinder cover |
-
2017
- 2017-03-30 CN CN201710201276.XA patent/CN106884707B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176338A (en) * | 1996-08-12 | 1998-03-18 | 马自达汽车株式会社 | Direct fuel injection engine |
| US6725828B1 (en) * | 2003-06-17 | 2004-04-27 | Ford Global Technologies, Llc | Vortex-induced stratification combustion for direct injection spark ignition engines |
| CN1916375A (en) * | 2005-08-05 | 2007-02-21 | 雅马哈发动机株式会社 | Internal combustion engine with ignition plug and vehicle provided with the same |
| CN101900026A (en) * | 2010-07-05 | 2010-12-01 | 天津大学 | Wall-guided in-cylinder direct injection gasoline engine combustion chamber |
| CN203856595U (en) * | 2014-04-29 | 2014-10-01 | 长城汽车股份有限公司 | Cylinder cover for engine and engine with cylinder cover |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578130A (en) * | 2017-09-29 | 2019-04-05 | Ifp新能源公司 | Internal combustion engine with the direct fuel injection along charge motion direction |
| CN109578130B (en) * | 2017-09-29 | 2022-02-08 | Ifp新能源公司 | Internal combustion engine with direct fuel injection in the direction of intake air movement |
| CN115182825A (en) * | 2022-08-22 | 2022-10-14 | 浙江吉利控股集团有限公司 | Methanol engine and vehicle |
| CN115182825B (en) * | 2022-08-22 | 2024-01-09 | 浙江吉利控股集团有限公司 | Methanol engine and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106884707B (en) | 2018-09-21 |
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Effective date of registration: 20210414 Address after: 241009 No.38 Taishan Road, Wuhu District, China (Anhui) pilot Free Trade Zone, Wuhu City, Anhui Province Patentee after: Wuhu ekotec power assembly Co.,Ltd. Address before: 241009 No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, China Patentee before: CHERY AUTOMOBILE Co.,Ltd. |