CN208831093U - In-cylinder direct-jet supercharging gasoline engine combustion system - Google Patents
In-cylinder direct-jet supercharging gasoline engine combustion system Download PDFInfo
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- CN208831093U CN208831093U CN201821260282.9U CN201821260282U CN208831093U CN 208831093 U CN208831093 U CN 208831093U CN 201821260282 U CN201821260282 U CN 201821260282U CN 208831093 U CN208831093 U CN 208831093U
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- gasoline engine
- combustion system
- cylinder direct
- inlet
- engine combustion
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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 utility model discloses in-cylinder direct-jet supercharging gasoline engine combustion systems, it is characterized by comprising the air intake ducts and gas off-take with combustion chamber, inlet valve is set in air intake duct, air outlet valve is set in gas off-take, the bottom of the air intake duct is equipped with air inlet and blocks outer, and side-lower of the outer on the outside of the inlet valve is blocked in the air inlet；Three squish areas are formed in the combustion chamber between cylinder cap and piston, including the air inlet side squish area close to inlet valve end and the side squish area between two cylinders of two sides.This in-cylinder direct-jet supercharging gasoline engine combustion system of the utility model, structure is simple, provides high compression ratio, promotes Tumble intensity, to meet engine power performance and emission performance design requirement, with good application prospect.
Description
Technical field
The utility model belongs to automobile technical field, more specifically to in-cylinder direct-jet supercharging gasoline engine combustion system.
Background technique
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 exploitation can be excavated as a wherein important ring there are also larger potentiality.Tradition
Engine controls the compression ratio of engine 11 hereinafter, air intake duct preferentially guarantees high flow capacity system to guarantee 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.
Utility model content
The purpose of this utility model is to solve the problems, such as of the existing technology, and it is simple to provide a kind of structure, provides high pressure
Contracting ratio promotes Tumble intensity, to meet the in-cylinder direct-jet supercharging gasoline engine combustion of engine power performance and emission performance design requirement
Burning system.
To achieve the goals above, the technical solution that the utility model is taken are as follows: provided this in-cylinder direct-jet pressurization
Gasoline engine combustion system, it is characterised in that: including the air intake duct and gas off-take with combustion chamber, inlet valve is set to air intake duct
Interior, air outlet valve is set in gas off-take, and the bottom of the air intake duct is equipped with air inlet and blocks outer, and the air inlet blocks outer set on institute
State the side-lower on the outside of inlet valve；Three squish areas are formed in the combustion chamber between cylinder cap and piston, including close to inlet valve
The air inlet side squish area at end and the side squish area between two cylinders of two sides.
To keep above-mentioned technical proposal more detailed and specific, the utility model also provides optimization technique further below
Scheme, to obtain satisfied practical function:
The length that outer is blocked in the air inlet is 4-7mm, and the width for being covered on the air intake duct bottom accounts for valve diameter
3/7。
The air inlet side squish section length is 10~15mm, and the squish length of side squish area is 5~10mm between the cylinder, is squeezed
Gas 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 opposite inlet valve pit baseplane of the inlet valve, the border of the piston are 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.
The outer diameter diameter of the top land is 75~78mm, 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 protrudes into length in combustion chamber,.
The utility model in-cylinder direct-jet supercharging gasoline engine combustion system compared with prior art, has the advantage that this reality
With novel this in-cylinder direct-jet supercharging gasoline engine combustion system, structure is simple, provides high compression ratio, promotes Tumble intensity, with
Meet engine power performance and emission performance design requirement, with good application prospect.
Detailed description of the invention
The label in content and figure expressed by the attached drawing to this specification is briefly described below:
Fig. 1 is the utility model combustion system structural schematic diagram；
Fig. 2 is the utility model combustion system structural schematic diagram；
Fig. 3 is the utility model combustion system structural schematic diagram；
Fig. 4 is the utility model top land structural schematic diagram.
In the figure, it is marked as 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 embodiment
Below against attached drawing, by the description of the embodiment, making to specific embodiment of the present utility model further detailed
Thin explanation.
This in-cylinder direct-jet supercharging gasoline engine combustion system of the utility model, as shown in Figure 1, 2, 3, including with combustion chamber 6
The air intake duct 1 and gas off-take 4 of connection, inlet valve 2 are set in air intake duct 1, and air outlet valve 5 is set in gas off-take 4, the bottom of air intake duct 1
Portion is equipped with air inlet and blocks 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, air inlet blocks outer 11 set on the side-lower in 2 outside of inlet valve.Outer 11 is blocked in air inlet
Length is 4-7mm, and the width I for being covered on 1 bottom of air intake duct accounts for the 3/7 of valve diameter.It is with stronger wrapped, Ke Yiyou
Effect improves the tumble flow of air intake duct 1, reaches the characteristic of high tumble flow.
In the utility model, the combustion chamber uses three flat squish schemes, in combustion chamber 6, cylinder cap and work, and shape between 7
At three squish areas, including the air inlet side squish area 81 close to 2 end of inlet valve and the side squish area 82 between two cylinders of two sides.
In the utility model, it is preferred that the squish length of air inlet side squish area 81 is 10~15mm, and the squish of side squish area 82 is long between cylinder
Degree is 5~10mm, and the squish gap of cylinder cap and piston 7 is 0.5~0.8mm.The arrangement of such structure squish area squish chamber can
To improve squish flow effect, to realize low oil consumption and high engine performance, squish gap is smaller, and burning velocity is faster, outburst pressure
Power 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 utility model, top land pit centres are slightly toward close exhaust valve side, in order to air inlet side air inlet screening
Keep off the arrangement of outer 11 and squish area.
In the utility model, the outer diameter diameter of top land is 75~78mm, top land plane to top land concave surface
Pit depth be 1~3mm, 45~65mm of pit diameter.
In the utility model, as shown in fig. 1, arrangement is set in the spark plug of the combustion system, central electrode protrudes into burning
Indoor length is 5mm.Go deep into chamber length by increasing spark plug, can effectively avoid encountering burning at initial stage in fiery karyomorphism
Room cold wall face 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 utility model, high compression ratio can effectively improve the flat of engine
Equal effective pressure makes the engine thermal efficiency with higher, 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.This is practical
It is novel to provide high compression ratio, cooperate air-flow occlusion part further to promote Tumble intensity by through-type air intake duct, by
Air-flow occlusion part is arranged in inlet valve lower part, while increasing the length of occlusion part, to increase, its is wrapped, effectively promotion tumble flow.
By increasing spark plug built-in length, fiery core initial stage propagation quality is promoted, improving combustion efficiency reduces discharge.
This in-cylinder direct-jet supercharging gasoline engine combustion system of the utility model, structure is simple, provides high compression ratio, is promoted
Tumble intensity, to meet engine power performance and emission performance design requirement, with good application prospect.
The utility model is exemplarily described above in conjunction with attached drawing, but the utility model be not limited to it is above-mentioned
Mode, as long as the improvement or directly application of the various unsubstantialities carried out using the method concept and technical solution of the utility model
In other occasions, all fall in the protection scope of the utility model.
Claims (7)
1. a kind of in-cylinder direct-jet supercharging gasoline engine combustion system, it is characterised in that: including the air intake duct with combustion chamber and go out
Air flue, inlet valve are set in air intake duct, and air outlet valve is set in gas off-take, and the bottom of the air intake duct is equipped with air inlet and blocks outer,
Side-lower of the outer on the outside of the inlet valve is blocked in the air inlet；Three are formed in the combustion chamber between cylinder cap and piston
Squish area, including the air inlet side squish area close to inlet valve end and the side squish area between two cylinders of two sides.
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
The length on edge is 4-7mm, and the width for being covered on the air intake duct bottom accounts for the 3/7 of valve diameter.
3. in-cylinder direct-jet supercharging gasoline engine combustion system described in accordance with the claim 1, 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.
4. 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
Pit baseplane, the border of the piston are 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.
5. in-cylinder direct-jet supercharging gasoline engine combustion system according to claim 4, it is characterised in that: the top land is recessed
Hole center is slightly toward close to exhaust valve side.
6. in-cylinder direct-jet supercharging gasoline engine combustion system according to claim 5, it is characterised in that: the top land
Outer diameter diameter is 75~78mm, and the pit depth of top land plane to top land concave surface is 1~3mm, pit diameter 45~
65mm。
7. in-cylinder direct-jet supercharging gasoline engine combustion system according to claim 6, it is characterised in that: the fire of the fuel system
Hua Saizhong sets arrangement, and it is 5mm that central electrode, which protrudes into length in combustion chamber,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821260282.9U CN208831093U (en) | 2018-08-07 | 2018-08-07 | In-cylinder direct-jet supercharging gasoline engine combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821260282.9U CN208831093U (en) | 2018-08-07 | 2018-08-07 | In-cylinder direct-jet supercharging gasoline engine combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208831093U true CN208831093U (en) | 2019-05-07 |
Family
ID=66308437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821260282.9U Active CN208831093U (en) | 2018-08-07 | 2018-08-07 | In-cylinder direct-jet supercharging gasoline engine combustion system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022016403A1 (en) * | 2020-07-22 | 2022-01-27 | 宁波吉利罗佑发动机零部件有限公司 | Engine combustion system, gasoline engine for hybrid vehicle, and vehicle |
| CN117569943A (en) * | 2024-01-15 | 2024-02-20 | 潍柴动力股份有限公司 | Porous eccentric piston and design method thereof |
| CN117569943B (en) * | 2024-01-15 | 2024-05-17 | 潍柴动力股份有限公司 | Porous eccentric piston and design method thereof |
-
2018
- 2018-08-07 CN CN201821260282.9U patent/CN208831093U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022016403A1 (en) * | 2020-07-22 | 2022-01-27 | 宁波吉利罗佑发动机零部件有限公司 | Engine combustion system, gasoline engine for hybrid vehicle, and vehicle |
| CN117569943A (en) * | 2024-01-15 | 2024-02-20 | 潍柴动力股份有限公司 | Porous eccentric piston and design method thereof |
| CN117569943B (en) * | 2024-01-15 | 2024-05-17 | 潍柴动力股份有限公司 | Porous eccentric piston and design method thereof |
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