CN108757152A - A kind of in-cylinder direct-jet supercharging gasoline engine combustion system - Google Patents
A kind of in-cylinder direct-jet supercharging gasoline engine combustion system Download PDFInfo
- Publication number
- CN108757152A CN108757152A CN201810888163.6A CN201810888163A CN108757152A CN 108757152 A CN108757152 A CN 108757152A CN 201810888163 A CN201810888163 A CN 201810888163A CN 108757152 A CN108757152 A CN 108757152A
- Authority
- CN
- China
- Prior art keywords
- gasoline engine
- combustion system
- cylinder direct
- engine combustion
- supercharging gasoline
- 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
Links
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
- 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
-
- 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
- F02F1/242—Arrangement of spark plugs or injectors
-
- 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
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per 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
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
- F02F1/4221—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder particularly for three or more inlet valves
-
- 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
-
- 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
- F02B2031/006—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air intake valves
-
- 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)
Abstract
The invention discloses a kind of in-cylinder direct-jet supercharging gasoline engine combustion systems, it is characterised in that：Include the air intake duct and gas off-take with combustion chamber, inlet valve is set in air intake duct, and air outlet valve is set in gas off-take, and outer is blocked in the bottom of the air intake duct equipped with air inlet.This in-cylinder direct-jet supercharging gasoline engine combustion system of the present invention, it is simple in structure, high compression ratio is provided, Tumble intensity is promoted, to meet engine power performance and emission performance design requirement, there is preferable application prospect.
Description
Technical field
The invention belongs to automobile technical field, more specifically to a kind of in-cylinder direct-jet supercharging gasoline engine combustion system.
Background technology
It is increasingly strict with China's oil consumption and emission regulation, improve engine thermal efficiency, reduce the oil consumption of engine at
For the emphasis of automobile vendor's research.Combustion system is developed as a wherein important ring, and also larger potentiality can excavate.Tradition
Engine controls the compression ratio of engine 11 hereinafter, air intake duct preferentially ensures high flow capacity system to ensure high power output
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.
Invention content
It present invention aim to address problem of the existing technology, provides a kind of simple in structure, provides high compression ratio,
Tumble intensity is promoted, the in-cylinder direct-jet supercharging gasoline engine to meet engine power performance and emission performance design requirement, which burns, is
System.
To achieve the goals above, the technical solution that the present invention takes is：This in-cylinder direct-jet gasoline supercharging provided
Machine combustion system, it is characterised in that：Include the air intake duct and gas off-take with combustion chamber, inlet valve is set in air intake duct, goes out
Valve is set in gas off-take, and outer is blocked in the bottom of the air intake duct equipped with air inlet.
To keep above-mentioned technical proposal more detailed and specific, the present invention also provides optimization technique sides further below
Case, to obtain satisfied practical function：
Side-lower of the outer on the outside of the inlet valve is blocked in the air inlet.
The length that outer is blocked in the air inlet is 4-7mm, and the width for being covered in the air intake duct bottom accounts for valve diameter
3/7。
Three squish areas are formed in the combustion chamber between cylinder cap and piston, include the air inlet side squish close to inlet valve end
Area and the side squish area between two cylinders of both sides.
The air inlet side squish section length is 10~15mm, and the squish length of side squish area is 5~10mm between the cylinder,
Squish gap is 0.5~0.8mm.
The top of the piston be equipped with top land concave surface, the top land concave surface close to inlet valve side be equipped with
The border of the opposite inlet valve pit baseplane of the inlet valve, the piston is inlet-side pistons top planes, side piston
Top planes and exhaust side pistons top planes are connected between each concave surface and plane by the transition of knuckle outer.
The top land pit centres are slightly toward close to exhaust valve side.
A diameter of 75~the 78mm of outer diameter of the top land, the pit depth of top land plane to top land concave surface
For 1~3mm, 45~65mm of pit diameter.
Arrangement is set in the spark plug of the combustion system, it is 5mm that central electrode, which stretches into length in combustion chamber,.
In-cylinder direct-jet supercharging gasoline engine combustion system of the present invention compared with prior art, has the following advantages：The present invention this
Kind in-cylinder direct-jet supercharging gasoline engine combustion system, it is simple in structure, high compression ratio is provided, Tumble intensity is promoted, is started with meeting
Mechanomotive force and emission performance design requirement have preferable application prospect.
Description of the drawings
The content expressed by the attached drawing to this specification and the label in figure are briefly described below：
Fig. 1 is combustion system structural schematic diagram of the present invention；
Fig. 2 is combustion system structural schematic diagram of the present invention；
Fig. 3 is combustion system structural schematic diagram of the present invention；
Fig. 4 is inventive piston top structure schematic diagram.
In figure label for：1, air intake duct, 11, air inlet block outer, 2, inlet valve, 3, spark plug, 4, gas off-take, 5, outlet
Door, 6, combustion chamber, 7, piston, 71, inlet-side pistons top planes, 72, inlet valve pit baseplane, 73, side top land
Plane, 74, top land concave surface, 75, exhaust side pistons top planes, 8, cylinder cap and piston squish area, 81, air inlet side squish
Area, side squish area between 82, cylinder.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, making to the specific implementation mode of the present invention further details of
Explanation.
This in-cylinder direct-jet supercharging gasoline engine combustion system of the present invention as shown in Figure 1, 2, 3, including is connected to combustion chamber 6
Air intake duct 1 and gas off-take 4, inlet valve 2 be set to air intake duct 1 in, air outlet valve 5 be set to gas off-take 4 in, the bottom of air intake duct 1 is set
There is air inlet to block outer 11.Inlet valve 2, exhaust valve 4 and cylinder cap, piston 7 and cylinder body close the cavity to form combustion chamber.
As shown in Fig. 2,3, side-lower of the outer 11 set on 2 outside of inlet valve is blocked in air inlet.Outer 11 is blocked in air inlet
Length is 4-7mm, and the width I for being covered in 1 bottom of air intake duct accounts for the 3/7 of valve diameter.It, can be with stronger wrapping property
The tumble flow for effectively improving air intake duct 1 reaches the characteristic of high tumble flow.
In the present invention, the combustion chamber uses three flat squish schemes, and in combustion chamber 6, cylinder cap and work form three between 7
A squish area includes the air inlet side squish area 81 close to 2 end of inlet valve and the side squish area 82 between two cylinders of both sides.This hair
In bright, it is preferred that the squish length of air inlet side squish area 81 is 10~15mm, between cylinder the squish length of side squish area 82 be 5~
The squish gap of 10mm, cylinder cap and piston 7 are 0.5~0.8mm.The arrangement of such structure squish area squish chamber can improve crowded
Effect is flowed, to realize low oil consumption and high engine performance, squish gap is smaller, and burning velocity is faster, and explosion pressure is bigger.
As shown in Figure 4, the top of piston 7 is equipped with top land concave surface 74, in top land concave surface 74 close to inlet valve 2
Side is equipped with the inlet valve pit baseplane 72 opposite with inlet valve 2, and the border of piston is inlet-side pistons top planes 71, side
Side top land plane 73 and exhaust side pistons top planes 75 are connected between each concave surface and plane by the transition of knuckle outer
It connects.
In the present invention, top land pit centres are slightly toward close exhaust valve side, in order to which air inlet side air inlet is blocked outside
Along 11 and the arrangement of squish area.
In the present invention, a diameter of 75~78mm of outer diameter of top land, top land plane is recessed to top land concave surface
Hole depth is 1~3mm, 45~65mm of pit diameter.
In the present invention, as shown in fig. 1, arrangement is set in the spark plug of the combustion system, central electrode stretches into combustion chamber
Length is 5mm.Go deep into chamber length by increasing spark plug, can effectively avoid at initial stage encountering combustion chamber in fiery karyomorphism cold
Wall surface reduces heat transfer loss and the unburned discharge of near wall to improve flame propagation velocity.
As shown in Figures 1 to 3, which uses Four valve structure, inlet valve 2 and exhaust valve 4 each two, spark plug 3
It is centrally disposed on cylinder cap.Air intake duct 1 is blocked using the high tumble inlet port of straight tube shape in the setting air inlet of 1 bottom of air intake duct
Outer 11 reaches the characteristic of high tumble flow to improve the tumble flow of air intake duct 1.
This in-cylinder direct-jet supercharging gasoline engine combustion system of the present invention, high compression ratio, which can effectively improve being averaged for engine, to be had
Pressure is imitated, makes engine that there is the higher thermal efficiency, improves the output power of engine, increases spark plug built-in length, to
Reduce heat transfer loss and the unburned discharge of near wall, to meet engine power performance and emission performance design requirement.The present invention provides
High compression ratio coordinates air-flow occlusion part further to promote Tumble intensity, by under inlet valve by through-type air intake duct
Air-flow occlusion part is arranged in portion, while increasing the length of occlusion part, to increase its wrapping property, effectively promotes tumble flow.Pass through increase
Spark plug built-in length, promotes fiery core initial stage propagation quality, and improving combustion efficiency reduces discharge.
This in-cylinder direct-jet supercharging gasoline engine combustion system of the present invention, it is simple in structure, high compression ratio is provided, tumble flow is promoted
Intensity has preferable application prospect to meet engine power performance and emission performance design requirement.
The present invention is exemplarily described above in conjunction with attached drawing, but the present invention is not limited to aforesaid way, only
It wants the improvement of the various unsubstantialities of methodology and technical solution progress using the present invention or directly applies to other occasions
, it all falls in protection scope of the present invention.
Claims (9)
1. a kind of in-cylinder direct-jet supercharging gasoline engine combustion system, it is characterised in that：Include the air intake duct with combustion chamber and goes out
Air flue, inlet valve are set in air intake duct, and air outlet valve is set in gas off-take, and outer is blocked in the bottom of the air intake duct equipped with air inlet.
2. in-cylinder direct-jet supercharging gasoline engine combustion system described in accordance with the claim 1, it is characterised in that：The air inlet is blocked outer
Along the side-lower being set on the outside of the inlet valve.
3. in-cylinder direct-jet supercharging gasoline engine combustion system according to claim 2, it is characterised in that：The air inlet is blocked outer
The length on edge is 4-7mm, and the width for being covered in the air intake duct bottom accounts for the 3/7 of valve diameter.
4. in-cylinder direct-jet supercharging gasoline engine combustion system described in accordance with the claim 1, it is characterised in that：The combustion chamber inner casing
Three squish areas are formed between lid and piston, include close to the air inlet side squish area at inlet valve end and between two cylinders of both sides
Side squish area.
5. in-cylinder direct-jet supercharging gasoline engine combustion system according to claim 4, it is characterised in that：The air inlet side squish
Section length is 10~15mm, and the squish length of side squish area is 5~10mm between the cylinder, and squish gap is 0.5~0.8mm.
6. in-cylinder direct-jet supercharging gasoline engine combustion system described in accordance with the claim 1, it is characterised in that：The top of the piston
Equipped with top land concave surface, the inlet valve opposite with the inlet valve is equipped with close to inlet valve side in the top land concave surface
The border of pit baseplane, the piston is inlet-side pistons top planes, side top land plane and exhaust side pistons top
Facial planes is connected between each concave surface and plane by the transition of knuckle outer.
7. in-cylinder direct-jet supercharging gasoline engine combustion system according to claim 6, it is characterised in that：The top land is recessed
Hole center is slightly toward close to exhaust valve side.
8. in-cylinder direct-jet supercharging gasoline engine combustion system according to claim 7, it is characterised in that：The top land
A diameter of 75~the 78mm of outer diameter, the pit depth of top land plane to top land concave surface are 1~3mm, pit diameter 45~
65mm。
9. in-cylinder direct-jet supercharging gasoline engine combustion system according to claim 8, it is characterised in that：The fire of the fuel system
Hua Saizhong sets arrangement, and it is 5mm that central electrode, which stretches into length in combustion chamber,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810888163.6A CN108757152A (en) | 2018-08-07 | 2018-08-07 | A kind of in-cylinder direct-jet supercharging gasoline engine combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810888163.6A CN108757152A (en) | 2018-08-07 | 2018-08-07 | A kind of in-cylinder direct-jet supercharging gasoline engine combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757152A true CN108757152A (en) | 2018-11-06 |
Family
ID=63969222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810888163.6A Pending CN108757152A (en) | 2018-08-07 | 2018-08-07 | A kind of in-cylinder direct-jet supercharging gasoline engine combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757152A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2022236457A1 (en) * | 2021-05-08 | 2022-11-17 | 浙江吉利控股集团有限公司 | Combustion system for vehicle and vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003322021A (en) * | 2002-05-01 | 2003-11-14 | Nissan Motor Co Ltd | Internal combustion engine |
| CN1869417A (en) * | 2005-05-27 | 2006-11-29 | 三菱自动车工业株式会社 | Structured combustion chamber for use in engine |
| CN104110322A (en) * | 2013-04-16 | 2014-10-22 | 迪尔公司 | A Cylinder Head Comprising A Shroud |
| CN106337727A (en) * | 2016-09-12 | 2017-01-18 | 奇瑞汽车股份有限公司 | Engine combustion system and automobile engine provided with same |
| CN206972392U (en) * | 2017-04-28 | 2018-02-06 | 北京汽车动力总成有限公司 | A kind of engine piston and engine |
| CN207583503U (en) * | 2017-12-01 | 2018-07-06 | 哈尔滨东安汽车动力股份有限公司 | A kind of new-typed gasoline engine piston structure |
-
2018
- 2018-08-07 CN CN201810888163.6A patent/CN108757152A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003322021A (en) * | 2002-05-01 | 2003-11-14 | Nissan Motor Co Ltd | Internal combustion engine |
| CN1869417A (en) * | 2005-05-27 | 2006-11-29 | 三菱自动车工业株式会社 | Structured combustion chamber for use in engine |
| CN104110322A (en) * | 2013-04-16 | 2014-10-22 | 迪尔公司 | A Cylinder Head Comprising A Shroud |
| CN106337727A (en) * | 2016-09-12 | 2017-01-18 | 奇瑞汽车股份有限公司 | Engine combustion system and automobile engine provided with same |
| CN206972392U (en) * | 2017-04-28 | 2018-02-06 | 北京汽车动力总成有限公司 | A kind of engine piston and engine |
| CN207583503U (en) * | 2017-12-01 | 2018-07-06 | 哈尔滨东安汽车动力股份有限公司 | A kind of new-typed gasoline engine piston structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022236457A1 (en) * | 2021-05-08 | 2022-11-17 | 浙江吉利控股集团有限公司 | Combustion system for vehicle and vehicle |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100549381C (en) | Vehicle piston internal combustion engine with adapted recess | |
| CN207348958U (en) | Miller cycle engine combustion system | |
| CN109899174A (en) | A kind of combustion system for using gasoline ignition engine instead on the basis of diesel engine | |
| CN108869006A (en) | Small-displacement gasoline engine combustion system | |
| CN108757152A (en) | A kind of in-cylinder direct-jet supercharging gasoline engine combustion system | |
| CN208831093U (en) | In-cylinder direct-jet supercharging gasoline engine combustion system | |
| CN207420706U (en) | Piston-top surface chamber structure and the engine with the chamber structure | |
| CN104653326B (en) | Top structure of direct-injection gasoline engine piston | |
| CN201794675U (en) | Squeeze-flow type compact combustion system with high compression ratio | |
| CN110259569A (en) | Port injection type supercharging gasoline engine efficient burning room | |
| CN207018102U (en) | A kind of gasoline compression ignition piston combustion bowl | |
| JPS6212370B2 (en) | ||
| CN105804856A (en) | Opposed-piston two-stroke intra-cylinder direct injection gasoline engine combustion chamber | |
| CN107355297A (en) | A kind of engine chamber for using Fuel Petroleum burning instead suitable for diesel engine | |
| CN106593621A (en) | Diesel engine beveled lip combustion chamber | |
| CN207093224U (en) | A kind of small displacement engine combustion chamber | |
| CN106884707B (en) | Combustion system and engine with it | |
| CN214787729U (en) | Crowded flow piston and engine | |
| CN201347809Y (en) | Engine cylinder end | |
| US6640780B2 (en) | Side valve arrangement for an internal combustion engine | |
| CN210509416U (en) | Engine cylinder head and engine | |
| CN209369921U (en) | Combustion chamber of petrol engine | |
| CN206175057U (en) | Oblique air flue side combusion chamber | |
| CN106523149B (en) | A kind of opposed pistons gasoline engine dual reflux scavenging combustion system | |
| CN211474285U (en) | Energy-saving forklift cylinder cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181106 |