CN106870120A - A kind of high-efficiency engine combustion system - Google Patents
A kind of high-efficiency engine combustion system Download PDFInfo
- Publication number
- CN106870120A CN106870120A CN201710168196.9A CN201710168196A CN106870120A CN 106870120 A CN106870120 A CN 106870120A CN 201710168196 A CN201710168196 A CN 201710168196A CN 106870120 A CN106870120 A CN 106870120A
- Authority
- CN
- China
- Prior art keywords
- inlet valve
- valve seat
- piston
- combustion chamber
- exhaust
- 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.)
- Pending
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Classifications
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- 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
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
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- 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
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- 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
- F02F3/00—Pistons
- F02F3/28—Other pistons with specially-shaped head
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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
Abstract
The invention discloses a kind of high-efficiency engine combustion system, belong to technical field of internal combustion engines, the present invention devises a kind of efficient combustion system suitable for gas-duct jetting engine, including cylinder cap and piston, its technical characteristics is the combustion chamber that inlet valve seat ring lower section increases barrier structure, can strengthen tumble motion level in engine cylinder；Top surface is raised and end face center has the high compression ratio piston combustion bowl of spherical pit, and tubulence energy higher can be formed in spherical pit, accelerates burning velocity, improves engine thermal efficiency, reduces oil consumption, reduces risk for knock.Experiment proves that, the thermal efficiency is promoted to 38% by the 36% of conventional engines, reduces oil consumption.
Description
Technical field
The invention belongs to technical field of internal combustion engines, and in particular to a kind of high-efficiency engine combustion system.
Background technology
It is increasingly strict with China's oil consumption and Abgasgesetz, improve engine thermal efficiency, reduce the oil consumption of engine into
It is the emphasis of automobile vendor's research.Combustion system is developed as a wherein important ring, and also larger potentiality can be excavated.Tradition
Engine is controlled below 11 the compression ratio of engine to ensure power output high, and air intake duct preferentially ensures high flow capacity system
Number, causes in-cylinder tumble flow level weaker, and burning velocity is slow, and oil consumption is higher under sub-load, and maximum thermal efficiency can only achieve 36%,
In reduced levels.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of efficient combustion system of engine.The technological means of use
To improve engine compression ratio, strengthen in-cylinder tumble flow sports level, so as to reach quickening burning velocity, improve engine thermal effect
Rate, the purpose for reducing oil consumption.
The present invention devises a kind of efficient combustion system suitable for gas-duct jetting engine, and its technical characteristics is
Inlet valve seat ring lower section increases the combustion chamber of barrier structure, can strengthen tumble motion level in engine cylinder；Top surface is raised
And end face center has the high compression ratio piston combustion bowl of spherical pit, tubulence energy higher can be formed in spherical pit, accelerated
Burning velocity, reduces risk for knock.
Technical scheme is as follows：
A kind of high-efficiency engine combustion system, including cylinder cap 1 and piston 9, the cylinder cap 1 include air intake duct 2, inlet valve
5th, inlet valve seat ring 3, exhaust duct 6, exhaust valve 8, exhaust valve seat insert 7 and the combustion chamber 4；The inlet valve seat ring 3, exhaust valve
Seat ring 7 is located at the combustion chamber top, is connected with air intake duct 2, exhaust duct 6 respectively；Inlet valve 5 is coaxial with inlet valve seat ring 3, enters
When valve 5 is opened, fuel-air mixture can enter the combustion chamber 4 by air intake duct 2 by inlet valve seat ring 3；Exhaust valve 8 and exhaust
The coaxial design of seat ring 7, when exhaust valve 8 is opened, the waste gas that in-cylinder combustion is produced can be by the combustion chamber 4 by exhaust valve seat insert
7 enter exhaust duct 6；
The lower section of the inlet valve seat ring 3 is provided with barrier structure 4-1, and the barrier structure is cylinder, have a diameter larger than into
Valve diameter, both differences are less than 1mm, effectively stop that air inlet flows through air intake duct bottom, more gases is flowed through air intake duct top,
Tumble motion level in enhancing engine cylinder, accelerates the mixing of fuel oil and air.
The piston 9 is located at the bottom of the combustion chamber 4, and piston 9 ensures that compression ratio is 13~14, and piston-top surface 9-1 has convex
Structure is played, end face center has spherical pit 9-2, and center pit interior energy forms tubulence energy higher, enables flame after igniting
Fast propagation, accelerates burning velocity, reduces risk for knock.
Further, the distance between described barrier structure 4-1 and inlet valve head 5-1 outers are 0.6mm-1mm, are hidden
Gear structure height is 3-5mm.
Further, the piston-top surface 9-1 raised height is 2mm-3mm, and the radius of the spherical pit 9-2 is
15mm-20mm, depth is 3mm-4mm.
Compared with prior art, advantages of the present invention is as follows：
The present invention has the combustion chamber of barrier structure, top surface raised and convex center by using inlet valve seat ring lower section
There is the high compression ratio piston combustion bowl of spherical pit, improve the tumble motion level in cylinder, accelerate burning velocity, reduce
Risk for knock.Experiment proves that, the thermal efficiency is promoted to 38% by the 36% of conventional engines, reduces oil consumption.
Brief description of the drawings
Fig. 1 is cylinder cover structure schematic diagram of the invention；
Fig. 2 is the barrier structure partial schematic diagram of Fig. 1；
Fig. 3 is the upward view of the combustion chamber of the invention；
Fig. 4 is the top view of piston of the invention；
Fig. 5 is the A-A sectional views of Fig. 4；
In figure：Cylinder cap 1, air intake duct 2, air intake duct top 2-1, air intake duct bottom 2-2, inlet valve seat ring 3, the combustion chamber
4th, barrier structure 4-1, inlet valve 5, inlet valve head 5-1, exhaust duct 6, exhaust valve seat insert 7, exhaust valve 8, piston 9, piston top
Face 9-1, spherical pit 9-2.
Specific embodiment
With reference to accompanying drawing, the present invention is further elaborated：
As Figure 1 and Figure 4, high-efficiency engine combustion system includes cylinder cap 1 and piston 9.Cylinder cap 1 by air intake duct 2, enter
Valve retainer 3, the combustion chamber 4, inlet valve 5, exhaust duct 6, exhaust valve seat insert 7, exhaust valve 8 are constituted.Air intake duct 2, cylinder cap fires
Burning room 4, exhaust duct 6, piston 9 are the chief component of combustion system.The inlet valve seat ring 3, exhaust valve seat insert 7 are located at cylinder
Lid top of combustion chamber, is connected with air intake duct 2, exhaust duct 6 respectively；Inlet valve 5 is coaxial with inlet valve seat ring 3, and inlet valve 5 is opened
When, fuel-air mixture can enter the combustion chamber 4 by air intake duct 2 by inlet valve seat ring 3；Exhaust valve 8 is same with exhaust valve seat insert 7
Axle is designed, and when exhaust valve 8 is opened, the waste gas that in-cylinder combustion is produced can enter exhaust by the combustion chamber 4 by exhaust valve seat insert 7
Road 6；
As shown in Figure 2 and Figure 3, the combustion chamber 4 has barrier structure 4-1 below inlet valve seat ring 3, barrier structure 4-1
Be cylinder, have a diameter larger than inlet valve diameter, both differences are less than 1mm, the barrier structure and inlet valve head outer 5-1 it
Between apart from L be 0.6mm, barrier structure height H1 be 5mm, can effectively stop that air inlet flows through air intake duct bottom 2-2, make more
Gas flows through air intake duct top 2-1, tumble motion level in enhancing engine cylinder, the tumble flow raising when valve stroke is less than 3mm
Effect is particularly evident, accelerates the mixing of fuel oil and air, improves mixture homogeneity, accelerates burning velocity, reduces oil consumption.
Referring to Fig. 4, Fig. 5, piston 9 ensures that engine compression ratio is 13~14, and piston-top surface 9-1 heights of projection H3 is 2mm,
It is 15mm that end face center has spherical pit 9-2, spherical pit 9-2 radiuses R, and pit depth H2 is 4mm, and spherical pit is not only avoided
Flame passes to top land too early to be caused to catch fire, moreover it is possible to is reduced the raised obstruction to tumble flow development of piston, is produced beneficial in pit
Life tubulence energy higher, accelerates flame propagation velocity, reduces risk for knock.
Increase barrier structure by the combustion chamber inlet valve seat ring lower section in such scheme, piston-top surface is raised and convex
The high compression ratio that there is spherical pit at the center of rising is designed, and combustion system has been obtained more rational matching, engine in-cylinder tumble flow
Level is obviously improved, and burning velocity is obviously improved, while risk for knock reduction.
The present invention experiment proves that, the thermal efficiency is promoted to 38% by the 36% of conventional engines, while oil consumption is significantly reduced.
Claims (3)
1. a kind of high-efficiency engine combustion system, including cylinder cap (1) and piston (9), the cylinder cap (1) including air intake duct (2),
Inlet valve (5), inlet valve seat ring (3), exhaust duct (6), exhaust valve (8), exhaust valve seat insert (7) and the combustion chamber (4)；It is described
Inlet valve seat ring (3), exhaust valve seat insert (7) are connected with air intake duct (2), exhaust duct (6) respectively positioned at the combustion chamber top；
Inlet valve (5) is coaxial with inlet valve seat ring (3), and when inlet valve (5) is opened, fuel-air mixture can be by air intake duct (2) by air inlet
Seat ring (3) enters the combustion chamber (4)；Exhaust valve (8) and exhaust valve seat insert (7) coaxial design, when exhaust valve (8) is opened,
The waste gas that in-cylinder combustion is produced can enter exhaust duct (6) by the combustion chamber (4) by exhaust valve seat insert (7)；Characterized in that,
Inlet valve seat ring (3) lower section is provided with barrier structure (4-1), and the barrier structure is cylinder, has a diameter larger than inlet valve
Diameter, both differences are less than 1mm；Positioned at the combustion chamber (4) bottom, piston (9) ensures that compression ratio is 13- to the piston (9)
14, piston-top surface (9-1) has bulge-structure, and end face center has spherical pit (9-2).
2. a kind of high-efficiency engine combustion system as claimed in claim 1, it is characterised in that described barrier structure (4-
1) with the distance between inlet valve head (5-1) outer it is 0.6-1mm, barrier structure highly is 3-5mm.
3. a kind of high-efficiency engine combustion system as claimed in claim 1, it is characterised in that the piston-top surface (9-1)
Raised height is 2-3mm, and the radius of the spherical pit (9-2) is 15-20mm, and depth is 3-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168196.9A CN106870120A (en) | 2017-03-21 | 2017-03-21 | A kind of high-efficiency engine combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168196.9A CN106870120A (en) | 2017-03-21 | 2017-03-21 | A kind of high-efficiency engine combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106870120A true CN106870120A (en) | 2017-06-20 |
Family
ID=59173284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710168196.9A Pending CN106870120A (en) | 2017-03-21 | 2017-03-21 | A kind of high-efficiency engine combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870120A (en) |
Cited By (6)
| 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 |
| CN109578131A (en) * | 2017-09-29 | 2019-04-05 | Ifp新能源公司 | Oval combustion chamber |
| CN110242437A (en) * | 2019-06-28 | 2019-09-17 | 奇瑞汽车股份有限公司 | Gasoline engine combustion system |
| CN113482765A (en) * | 2021-08-11 | 2021-10-08 | 安徽江淮汽车集团股份有限公司 | Natural gas engine |
| WO2022183868A1 (en) * | 2021-03-01 | 2022-09-09 | 比亚迪股份有限公司 | Engine and vehicle with engine |
| CN115898622A (en) * | 2022-11-27 | 2023-04-04 | 赛力斯集团股份有限公司 | Combustion chamber beneficial to improving heat efficiency of engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5797368A (en) * | 1995-09-21 | 1998-08-25 | Meta Motoren- Und Energie-Technik Gmbh | Reciprocating piston internal combustion engine having at least one cylinder |
| CN103615334A (en) * | 2013-12-09 | 2014-03-05 | 安徽江淮汽车股份有限公司 | Cylinder cover with shielding wall structure, manufacturing method and engine |
| CN104653326A (en) * | 2014-12-12 | 2015-05-27 | 重庆长安汽车股份有限公司 | Top structure of direct-injection gasoline engine piston |
| CN104879234A (en) * | 2015-05-22 | 2015-09-02 | 奇瑞汽车股份有限公司 | Engine piston |
| CN206681844U (en) * | 2017-03-21 | 2017-11-28 | 中国第一汽车股份有限公司 | A kind of high-efficiency engine combustion system |
-
2017
- 2017-03-21 CN CN201710168196.9A patent/CN106870120A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5797368A (en) * | 1995-09-21 | 1998-08-25 | Meta Motoren- Und Energie-Technik Gmbh | Reciprocating piston internal combustion engine having at least one cylinder |
| CN103615334A (en) * | 2013-12-09 | 2014-03-05 | 安徽江淮汽车股份有限公司 | Cylinder cover with shielding wall structure, manufacturing method and engine |
| CN104653326A (en) * | 2014-12-12 | 2015-05-27 | 重庆长安汽车股份有限公司 | Top structure of direct-injection gasoline engine piston |
| CN104879234A (en) * | 2015-05-22 | 2015-09-02 | 奇瑞汽车股份有限公司 | Engine piston |
| CN206681844U (en) * | 2017-03-21 | 2017-11-28 | 中国第一汽车股份有限公司 | A kind of high-efficiency engine combustion system |
Cited By (7)
| 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 |
| CN109578131A (en) * | 2017-09-29 | 2019-04-05 | Ifp新能源公司 | Oval combustion chamber |
| CN110242437A (en) * | 2019-06-28 | 2019-09-17 | 奇瑞汽车股份有限公司 | Gasoline engine combustion system |
| WO2022183868A1 (en) * | 2021-03-01 | 2022-09-09 | 比亚迪股份有限公司 | Engine and vehicle with engine |
| US11952957B2 (en) | 2021-03-01 | 2024-04-09 | Byd Company Limited | Engine and vehicle having the same |
| CN113482765A (en) * | 2021-08-11 | 2021-10-08 | 安徽江淮汽车集团股份有限公司 | Natural gas engine |
| CN115898622A (en) * | 2022-11-27 | 2023-04-04 | 赛力斯集团股份有限公司 | Combustion chamber beneficial to improving heat efficiency of engine |
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Application publication date: 20170620 |
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| WD01 | Invention patent application deemed withdrawn after publication |