CN203856596U - High tumble admission passage of direct injection gasoline engine - Google Patents
High tumble admission passage of direct injection gasoline engine Download PDFInfo
- Publication number
- CN203856596U CN203856596U CN201420074577.2U CN201420074577U CN203856596U CN 203856596 U CN203856596 U CN 203856596U CN 201420074577 U CN201420074577 U CN 201420074577U CN 203856596 U CN203856596 U CN 203856596U
- Authority
- CN
- China
- Prior art keywords
- admission passage
- high tumble
- intake duct
- angle
- firing chamber
- 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.)
- Expired - Lifetime
Links
- 238000002347 injection Methods 0.000 title abstract description 3
- 239000007924 injection Substances 0.000 title abstract description 3
- 238000010304 firing Methods 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Classifications
-
- 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
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses a high tumble admission passage of a direct injection gasoline engine. The high tumble admission passage comprises a combustion chamber (3) and an admission passage (1) communicated with the combustion chamber (3), wherein inlet valves (2) are arranged inside the combustion chamber (3) and the admission passage (1); an included angle alpha is formed between the lower wall face (11) of the admission passage (1) and the center line (6) of the admission passage. The motion of airflow at the outlet section of the admission passage (1) can change by adjusting the included angle alpha, and thus the tumble ratio is convenient to adjust; the high tumble admission passage is simple, practical and convenient to adjust.
Description
Technical field
The utility model belongs to technical field of automobile engine, relates in particular to the high tumble inlet port of a kind of direct spray petrol engine in cylinder.
Background technique
Along with the environmental problem swift and violent increase of sternness and automobile pollution increasingly, stricter for the relevant laws and regulations of automotive energy-saving emission-reducing.Compared with traditional gas-duct jetting petrol engine (PFI), direct spray petrol engine in cylinder (GDI) can be controlled more accurately oil spout, adopt higher compression ratio, combine with supercharging technology, coordinate Down-Sizing and Down-Speeding strategy to there is the cost advantage of good power character and Economy and relatively low (comparing with mixed power, vehicle technology, HCCI technology) because of it, and correlation technique reaches its maturity and possesses volume production condition at present, and having become is at present petrolic main development direction.The direct spray petrol engine in cylinder of main flow is all oil sprayer side, concerning this class is directly sprayed machine, Design of Inlet is even more important, need intake duct to provide stronger air inlet to roll stream and strengthen the guiding to spraying, to prevent that oil bundle from hitting wall, promote air-fuel mixture, but the excessive inlet loss that can increase again of Tumble intensity, reduce flow coefficient, affect engine performance, therefore need to intake duct roll stream than and firing chamber carry out special meticulous Optimized Matching design, ensure that under various operating modes intake duct can provide the enough strong stream that rolls, the while is not lost again air inlet.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of convenient intake duct of controlling and rolls the high tumble inlet port of direct spray petrol engine in cylinder that flows ratio.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: the high tumble inlet port of a kind of direct spray petrol engine in cylinder, comprise firing chamber and the intake duct being communicated with it, in described firing chamber and intake duct, be provided with intake valve, the lower wall surface of described intake duct and air inlet passage center line have an angle α.
Described angle α is at 0 °～10 °.
Air inlet passage center line and intake valve bar center line angle are β, and β angle is at 30 °～60 °.
Described intake duct is straight line type.
Described firing chamber is pitched roof formula firing chamber.
The utility model has the advantage of, the in the situation that of constant in intake duct general structure, as far as possible little on the impact of charge flow rate coefficient, by regulating rolling the local key parameter that stream is larger than impact, the convenient intake duct of controlling rolls stream ratio, simplifies Design of Inlet program.Have advantages of simple, practical, roll stream than being convenient to adjusting.
Brief description of the drawings
Fig. 1 is the structural representation of the high tumble inlet port of a kind of direct spray petrol engine in cylinder of the utility model;
Mark in above-mentioned figure is: 1, intake duct, 11, lower wall surface, 2, intake valve, 3, firing chamber, 4, intake valve upside, 5, intake valve bar center line, 6, air inlet passage center line.
Embodiment
Fig. 1 is the structural representation of the high tumble inlet port of a kind of direct spray petrol engine in cylinder of the utility model, comprise firing chamber 3 and the intake duct 1 being communicated with it, in firing chamber 3 and intake duct 1, be provided with intake valve 2, lower wall surface 11 and the air inlet passage center line 6 of intake duct 1 have an angle α.Air inlet passage center line 6 is β with intake valve bar center line 5 angles.
Can, by regulating angle α, change the air motion of intake duct 1 outlet section, thereby adjustment roll stream compare easily.The stream that rolls that for example direct fuel-injection engine if desired further improves air flue compares, strengthen the guiding to spraying, prevention Spray Impingement, can in the time of design, increase α angle, can reduce the circulation area of intake duct 1 outlet section, in intake process, improve airspeed, and the more air-flows of guiding enter firing chamber 3 from intake valve upside 4, form the more powerful stream that rolls clockwise rotating.Otherwise, if desired reduce and roll stream ratio, improve flow coefficient, reduce α angle.Therefore can regulate directly, efficiently, flexibly intake duct 1 to roll stream ratio.
In addition, increase the ratio that β angle also can increase air-flow and enters firing chamber 3 from intake valve upside 4, roll stream ratio thereby increase, but β angle is generally subject to the gentle door of air flue layout constraints, can design according to demand, but adjustable scope is little.
General α angle is 0 °～10 °, and β angle is 30 °～60 °, and choosing α is 8 °, and β is 45 °.
Intake duct 1 is straight line type.Firing chamber 3 is pitched roof formula firing chamber.
Adopt after above-mentioned structure, the in the situation that of constant in intake duct 1 general structure, as far as possible little on the impact of charge flow rate coefficient, by regulating rolling the local key parameter that stream is larger than impact, the convenient intake duct 1 of controlling rolls stream ratio, simplifies intake duct 1 and designs program.Have advantages of simple, practical, roll stream than being convenient to adjusting.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or without improving, design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (5)
1. the high tumble inlet port of direct spray petrol engine in cylinder, comprise firing chamber (3) and the intake duct (1) being communicated with it, in described firing chamber (3) and intake duct (1), be provided with intake valve (2), it is characterized in that, the lower wall surface (11) of described intake duct (1) has an angle α with air inlet passage center line (6).
2. the high tumble inlet port of direct spray petrol engine in cylinder as claimed in claim 1, is characterized in that, described angle α is at 0 °～10 °.
3. the high tumble inlet port of directly jetting gasoline engine as claimed in claim 1 or 2, is characterized in that, air inlet passage center line (6) is β with intake valve bar center line (5) angle, and β angle is at 30 °～60 °.
4. the high tumble inlet port of directly jetting gasoline engine as claimed in claim 3, is characterized in that, described intake duct (1) is straight line type.
5. the high tumble inlet port of directly jetting gasoline engine as claimed in claim 4, is characterized in that, described firing chamber (3) are pitched roof formula firing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074577.2U CN203856596U (en) | 2014-02-20 | 2014-02-20 | High tumble admission passage of direct injection gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074577.2U CN203856596U (en) | 2014-02-20 | 2014-02-20 | High tumble admission passage of direct injection gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856596U true CN203856596U (en) | 2014-10-01 |
Family
ID=51606453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420074577.2U Expired - Lifetime CN203856596U (en) | 2014-02-20 | 2014-02-20 | High tumble admission passage of direct injection gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856596U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190593A1 (en) * | 2016-05-04 | 2017-11-09 | 广州汽车集团股份有限公司 | Air intake duct and combustion system of turbocharged gasoline engine |
| CN107842435A (en) * | 2017-10-20 | 2018-03-27 | 奇瑞汽车股份有限公司 | The high tumble inlet port of direct spray petrol engine in cylinder |
| CN113404614A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Cylinder head and gas engine |
-
2014
- 2014-02-20 CN CN201420074577.2U patent/CN203856596U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190593A1 (en) * | 2016-05-04 | 2017-11-09 | 广州汽车集团股份有限公司 | Air intake duct and combustion system of turbocharged gasoline engine |
| CN107842435A (en) * | 2017-10-20 | 2018-03-27 | 奇瑞汽车股份有限公司 | The high tumble inlet port of direct spray petrol engine in cylinder |
| CN113404614A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Cylinder head and gas engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |
|
| CX01 | Expiry of patent term |