CN102367755B - Air-intake tumble flow generation device equipped with EGR (exhaust gas recirculation) for gasoline engine - Google Patents
Air-intake tumble flow generation device equipped with EGR (exhaust gas recirculation) for gasoline engine Download PDFInfo
- Publication number
- CN102367755B CN102367755B CN2011103493172A CN201110349317A CN102367755B CN 102367755 B CN102367755 B CN 102367755B CN 2011103493172 A CN2011103493172 A CN 2011103493172A CN 201110349317 A CN201110349317 A CN 201110349317A CN 102367755 B CN102367755 B CN 102367755B
- Authority
- CN
- China
- Prior art keywords
- air
- airtight plate
- suction tude
- intake
- gas recirculation
- 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 - Fee Related
Links
Images
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
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention relates to an air-intake tumble flow generation device of an internal combustion engine. The device comprises an air cylinder cover, an air-intake valve, an air-intake pipeline, an air-intake manifold, a section of air-intake pipe, a first air baffle plate and an exhaust air-air mixing region, wherein the air-intake pipeline is positioned in the air cylinder cover; the air-intake manifold is connected with the air-intake pipeline; the section of air-intake pipe is arranged in the Y direction; the first air baffle plate is arranged on the section of air-intake pipe; the circulation area of the pipeline is reduced by the first air baffle plate, the boundary of the first air baffle plate in the air-intake pipe is a straight line, and the straight line is vertical to the X direction; the exhaust air-air mixing region is positioned between the first air baffle plate and an air-intake header pipe, and the mixed exhaust air and air enters an air cylinder through the first air baffle plate. According to the invention, the emission of NOx of a lean burn gasoline engine is reduced to a certain extent, and under the condition of appropriate EGR, the power of the engine also canbe increased by 5-7%, and the specific fuel consumption is lowered by 5-8%.
Description
Technical field
The present invention relates to a kind of supplier of general combustion engine ignition mixture, further relate to a kind of air-intake of combustion engine and roll flow generating apparatus.
Technical background
In recent years, the exhaust pollution of automobile and CO
2Ball ecological environment destruction and greenhouse effect problem that discharging causes are serious day by day.The automobile that the good fuel consumption rate of blowdown is low not only can be alleviated global greenhouse effect and influence that the climate warming that brings, ecotope balance destroy, and can save fuel oil, good economy performance, enhance one's market competitiveness, some advanced automotive engineerings are shown up prominently gradually and day by day are tending towards ripe, and wherein the petrol engine lean burn technology namely is a kind of advanced person's energy-conserving and emission-cutting technology.The petrol engine lean burn technology can also effectively reduce the discharging of petrol engine exhaust pollutant when reducing oil consumption, but blemish in an otherwise perfect thing is that traditional triple effect catalytic converter (TWC) can not well be removed the NOx in the exhaust because exhaust is in excess oxygen.Therefore, need a kind of discharging that can reduce petrol engine HC and CO, can control the technology of the NOx content in the exhaust simultaneously again.
Summary of the invention
The object of the present invention is to provide a kind of petrol engine air inlet of being furnished with waste gas recirculation EGR to roll flow generating apparatus, produce when entering cylinder after this device can be realized waste gas and fresh air mixes and roll stream, thereby can on the basis of traditional E GR, further improve power character, Economy and the emission performance of gasoline engine, particularly control the discharging of NOx, and then improve the lean flammability limit value of gasoline engine.
The present invention is achieved by the following technical solutions, at first definition: the reciprocating direction of steam-cylinder piston is defined as directions X, and the air flue center line vertical with directions X is defined as Y-direction, and the direction simultaneously vertical with X, Y-direction is defined as the Z direction.The petrol engine air inlet of being furnished with waste gas recirculation EGR is rolled flow generating apparatus and is comprised: cylinder head, and intake valve is positioned at the intake duct of cylinder head, and second suction tude that links to each other with intake duct also comprises: be arranged on one section first suction tude on the Y-direction; At first airtight plate that first suction tude arranges, this first airtight plate reduces the first suction tude circulation area, and the separatrix of first airtight plate in first suction tude be straight line, and the angle of this straight line and directions X is greater than 0; Waste gas between first airtight plate and intake manifold-air mixed zone enters cylinder through first airtight plate after the mixing.
As preferred version, separatrix and the angle of directions X of described first airtight plate in first suction tude is 90 degree; Be the mixed gas of air and motor exhaust in described first suction tude, the air inlet ratio of any gas is 0%-100% in the two; Described first airtight plate is perpendicular to Y-direction; Described first airtight plate can move along directions X; The screening area of described first airtight plate in first suction tude be more than or equal to 0, and be less than or equal to 1/2 of the first suction tude sectional area.
The concrete structure scheme of first airtight plate can be: comprise the aeroscopic plate between cylinder head and suction tude, have the gas port identical with cylinder head upper vent hole cross section on the described aeroscopic plate, aeroscopic plate has slideway or a chute that moves along directions X; Described first airtight plate moves along directions X in slideway or chute.Described aeroscopic plate has a side opening at slideway or chute one side, and side opening is communicated with gas port and waste gas recirculation intake manifold; Described waste gas mixed before entering first airtight plate with air; The separatrix middle part of described first airtight plate in first suction tude connects second airtight plate, second airtight plate be shaped as rectangle, wherein a limit overlaps with the separatrix of first airtight plate with first suction tude, and is symmetrically distributed along the separatrix of first airtight plate and first suction tude; The angle of second airtight plate and first airtight plate is greater than 90 degree, and is less than or equal to 180 degree, and when angle is not equal to 180 when spending, second airtight plate is partial to the direction of advance of gas flow.
For multicylinder engine, need roll flow generating apparatus according to N the petrol engine air inlet of being furnished with waste gas recirculation EGR in parallel of the quantity of cylinder, N 〉=2 o'clock, described N first airtight plate connected by a top board that extends along the Z direction, realizes synchronization control.
When first airtight plate runs to a side, will produce and roll stream, and the intensity of rolling stream motion is directly proportional with area that monolateral air flue is covered, and to roll intensity of flow more big for the more big air inlet of area that covers.
Traditional EGR Technology EGR introduces waste gas among the intake manifold evenly to mix with common mixed regime of flow with fresh air and sends into cylinder, if the waste gas content that EGR sneaks into too much has and the improper meeting of mixed regime of flow causes near the waste gas content of spark plug too much, thereby gas concentration reduces and then reduces the possibility that combustion gas is lighted near making spark plug, thereby even being lighted, combustion gas also can make the reduction of propagation of flame speed make the fuel economy of petrol engine descend, power descends, seriously influenced the Economy of petrol engine, the performance of aspects such as power character, these have all limited the lean flammability limit of petrol engine to a certain extent.And the present invention is with respect to traditional EGR Technology, can avoid the problems referred to above, this invention waste gas does not directly insert the intake manifold, but mix with air at the intake manifold place, then by first airtight plate, stream is rolled in formation, form stratified mixtures and enter cylinder, because the existence of air inlet layering, this just makes inflammable mixture form concentration gradient at spark plug between the cylinder wall, and around spark plug is the mixed gas that is suitable for catching fire, around cylinder is the more zone of waste gas, can guarantee like this reliability of lighting a fire can not influence propagation of flame speed again, so can be when reducing NOx emissions of lean combustion gasoline engines, substantially do not influence power character and the Economy of motor, under the situation of suitable EGR amount, also can make the power of motor increase 5-7%, specific fuel consumption reduces 5-8%.
Description of drawings
Fig. 1 is first airtight plate and top board connection diagram among the embodiment.Among the figure, 8 represent top board, and 12a, 12b, 12c represent first airtight plate, and 15a, 15b, 15c represent second airtight plate, and 13 represent the threads of lead screw hole.
Fig. 2 is aeroscopic plate partial cutaway schematic among the embodiment.Among the figure, 6 represent aeroscopic plate, and 7a, 7b, 7c represent gas port, and 10a, 10b, 10c represent side opening, and 11a, 11b, 11c, 11d represent fixing threaded hole, and 13 represent leading screw, and 14 represent sealing gasket.
Fig. 3 is based on the schematic representation of Fig. 1 right elevation.
Fig. 4 is that Fig. 2 is along the sectional view of A-A direction.
Fig. 5 is that Fig. 1 device and Fig. 2 device assemble the back along the sectional view of A-A direction.
Fig. 6 rolls stream to form schematic representation in cylinder.Among the figure, 17 represent cylinder head, 18 representative intake valves, and 19 represent intake duct.
Embodiment
Embodiment:
Contrast Fig. 1-6, the petrol engine air inlet of being furnished with waste gas recirculation EGR is rolled flow generating apparatus and is comprised: cylinder head 17, and intake valve 18 is positioned at the intake duct 19 of cylinder head, second suction tude that links to each other with intake duct also comprises: be arranged on one section first suction tude on the Y-direction; The first airtight plate 12a, 12b, the 12c that arrange in first suction tude, this first airtight plate 12a, 12b, 12c reduce the first suction tude circulation area, and the first airtight plate 12a, 12b, the 12c separatrix in first suction tude are straight line, and the angle of this straight line and directions X is 90 degree; The described first airtight plate 12a, 12b, 12c are perpendicular to Y-direction; The described first airtight plate 12a, 12b, 12c can move along directions X; The described first airtight plate 12a, 12b, the 12c screening area in first suction tude be more than or equal to 0, and be less than or equal to this and locate 1/2 of the first suction tude sectional area.
1 aeroscopic plate 8 is arranged between cylinder head 17 and first suction tude, have gas port 7a, 7b, the 7c identical with cylinder head 17 upper vent hole cross sections on the described aeroscopic plate 8, aeroscopic plate 8 has slideway or a chute that moves along directions X; The described first airtight plate 12a, 12b, 12c move along directions X in slideway or chute.Described aeroscopic plate has side opening 10a, a 10b, 10c at slideway or chute one side, and side opening 10a, 10b, 10c are communicated with gas port 7a, 7b, 7c and waste gas recirculation intake manifold; Described waste gas mixed before entering the first airtight plate 12a, 12b, 12c with air; The described first airtight plate 12a, 12b, 12c connect second an airtight plate 15a, 15b, 15c at gas port 7a, 7b, middle part, 7c separatrix, the second airtight plate 15a, 15b, 15c are shaped as rectangle, and wherein a limit overlaps with the separatrix of gas port 7a, 7b, 7c with the first airtight plate 12a, 12b, 12c; The angle of the second airtight plate 15a, 15b, 15c and the first airtight plate 12a, 12b, 12c is greater than 90 degree, and is less than or equal to 180 degree, and when angle is not equal to 180 when spending, second airtight plate is partial to the direction of advance of gas flow.
For multicylinder engine, need roll flow generating apparatus according to N the petrol engine air inlet of being furnished with waste gas recirculation EGR in parallel of the quantity of cylinder, N 〉=2 o'clock, described N first airtight plate connected by a top board 8 that extends along the Z direction, realizes synchronization control.
Fixing threaded hole 11a, 11b on the aeroscopic plate, 11c, 11d are used for fixing aeroscopic plate.
During work, determine with meeting whether waste gas participates in burning according to cooling water temperature; When waste gas participates in burning, can determine the screening area of first airtight plate by the position of control leading screw 13 in threads of lead screw hole 9, thereby realize rolling the flexible control of intensity of flow.
Claims (8)
1. be furnished with the petrol engine air inlet of waste gas recirculation EGR and roll flow generating apparatus, definition: the reciprocating direction of steam-cylinder piston is defined as directions X, and the intake duct center line vertical with directions X is defined as Y-direction, and the direction simultaneously vertical with X, Y-direction is defined as the Z direction; Comprise: cylinder head, intake valve is positioned at the intake duct of cylinder head, and second suction tude that links to each other with intake duct is characterized in that, also comprises: be arranged on one section first suction tude on the Y-direction; At first airtight plate that first suction tude arranges, this first airtight plate reduces the first suction tude circulation area, and the separatrix of first airtight plate and first suction tude is straight line, and the angle of this straight line and directions X is greater than 0; The separatrix of described first airtight plate and first suction tude and the angle of directions X are 90 degree.
2. flow generating apparatus is rolled in described petrol engine air inlet of being furnished with waste gas recirculation EGR according to claim 1, it is characterized in that, and be the mixed gas of air and motor exhaust in described first suction tude.
3. flow generating apparatus is rolled in described petrol engine air inlet of being furnished with waste gas recirculation EGR according to claim 2, it is characterized in that, described first airtight plate is perpendicular to Y-direction, and described first airtight plate can move along directions X.
4. flow generating apparatus is rolled in described petrol engine air inlet of being furnished with waste gas recirculation EGR according to claim 3, it is characterized in that, the screening area of described first airtight plate in first suction tude be more than or equal to 0, and be less than or equal to this and locate 1/2 of the first suction tude sectional area.
5. flow generating apparatus is rolled in described petrol engine air inlet of being furnished with waste gas recirculation EGR according to claim 4, it is characterized in that, also comprise: the aeroscopic plate between cylinder head and second suction tude, have the gas port identical with cylinder head upper vent hole cross section on the described aeroscopic plate, aeroscopic plate has slideway or a chute that moves along directions X, and described first airtight plate moves along directions X in slideway or chute.
6. flow generating apparatus is rolled in described petrol engine air inlet of being furnished with waste gas recirculation EGR according to claim 5, it is characterized in that, described aeroscopic plate has a side opening at slideway or chute one side, side opening is communicated with gas port and waste gas recirculation intake manifold, and motor exhaust mixed before entering first airtight plate with air.
7. flow generating apparatus is rolled in any one described petrol engine air inlet of being furnished with waste gas recirculation EGR according to claim 1 to 6, it is characterized in that, the separatrix middle part of described first airtight plate in first suction tude connects second airtight plate, second airtight plate be shaped as rectangle.
8. flow generating apparatus is rolled in described petrol engine air inlet of being furnished with waste gas recirculation EGR according to claim 7, it is characterized in that, the angle of second airtight plate and first airtight plate is greater than 90 degree, and be less than or equal to 180 degree, when angle is not equal to 180 when spending, second airtight plate is partial to the direction of advance of gas flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103493172A CN102367755B (en) | 2011-11-08 | 2011-11-08 | Air-intake tumble flow generation device equipped with EGR (exhaust gas recirculation) for gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103493172A CN102367755B (en) | 2011-11-08 | 2011-11-08 | Air-intake tumble flow generation device equipped with EGR (exhaust gas recirculation) for gasoline engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102367755A CN102367755A (en) | 2012-03-07 |
| CN102367755B true CN102367755B (en) | 2013-09-11 |
Family
ID=45760342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103493172A Expired - Fee Related CN102367755B (en) | 2011-11-08 | 2011-11-08 | Air-intake tumble flow generation device equipped with EGR (exhaust gas recirculation) for gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102367755B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431697B (en) * | 2020-03-23 | 2022-09-27 | 上海汽车集团股份有限公司 | Cylinder head for an engine, engine and exhaust gas recirculation system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3498334B2 (en) * | 1993-11-08 | 2004-02-16 | 株式会社日立製作所 | Intake device for internal combustion engine |
| KR100471202B1 (en) * | 2001-09-26 | 2005-03-07 | 현대자동차주식회사 | Gasoline direct injection |
| EP1467075B1 (en) * | 2003-04-03 | 2010-09-15 | Nissan Motor Co., Ltd. | Intake system of internal combustion engine |
-
2011
- 2011-11-08 CN CN2011103493172A patent/CN102367755B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102367755A (en) | 2012-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105715367B (en) | Based on can variable gas channel double fuel ignition internal combustion engine and control method | |
| CN105114174A (en) | Lean-burn gas duel-fuel spark-ignition-type internal combustion engine based on EGR system and control method | |
| Mattarelli et al. | Modeling and experimental investigation of a 2-stroke GDI engine for range extender applications | |
| CN109404123A (en) | A kind of hydrogen in-cylinder direct-jet rotor machine and its control method | |
| JP2012057470A (en) | Internal combustion engine | |
| CN102425507B (en) | Exhaust gas circulation (EGR) based hybrid stratified charge system and method of gasoline engine | |
| JPH06159079A (en) | Intake device for engine | |
| CA3013284C (en) | Control method and control device for internal combustion engine | |
| CN102367755B (en) | Air-intake tumble flow generation device equipped with EGR (exhaust gas recirculation) for gasoline engine | |
| CN205154394U (en) | Formula internal -combustion engine is lighted to gaseous double fuel of lean -burn based on EGR system | |
| CN205532872U (en) | Formula internal -combustion engine is lighted to double fuel based on variable air flue | |
| CN102425508A (en) | Exhaust gas circulation (EGR) based hybrid charge system and method of gasoline engine | |
| CN204140220U (en) | The piston of layering lean-combustion engine and motor and vehicle | |
| CN202451271U (en) | Gasoline engine air-inflow turbulence generation device with EGR (Exhaust Gas Recirculation) | |
| CN104533584B (en) | engine intake and exhaust system and vehicle | |
| CN109681318A (en) | Using oxygen as the zero nitrogen rotor machine of HC fuel spark ignition type and its control method of oxidant | |
| CN202451272U (en) | Petrol engine air intake eddy flow generator with exhaust gas recirculation (EGR) | |
| JP5811356B2 (en) | Exhaust gas recirculation device | |
| CN106438114A (en) | Multi-point port injection gas engine stratified combustion system | |
| CN102562366A (en) | Environmental-friendly fuel economizer for internal combustion engine | |
| CN106321289A (en) | Single-point injection gas engine stratified combustion system | |
| CN102374012A (en) | Gasoline engine intake swirl generating device with exhaust gas recirculation (EGR) | |
| JP5626153B2 (en) | Internal combustion engine | |
| CN110284999A (en) | A kind of lean-burn systems and vehicle | |
| Nishida et al. | Low Cooling Losses and Low Emission Analysis of Small Bore Diesel Engine Combustion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20211108 |