CN102374012A - Gasoline engine intake swirl generating device with exhaust gas recirculation (EGR) - Google Patents
Gasoline engine intake swirl generating device with exhaust gas recirculation (EGR) Download PDFInfo
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- CN102374012A CN102374012A CN2011103501215A CN201110350121A CN102374012A CN 102374012 A CN102374012 A CN 102374012A CN 2011103501215 A CN2011103501215 A CN 2011103501215A CN 201110350121 A CN201110350121 A CN 201110350121A CN 102374012 A CN102374012 A CN 102374012A
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- China
- Prior art keywords
- intake
- egr
- exhaust gas
- gas recirculation
- airtight plate
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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 relates to a gasoline engine intake swirl generating device with exhaust gas recirculation (EGR). The device comprises a cylinder cover, an intake valve, an intake passage positioned in the cylinder cover, an intake manifold connected with the intake passage, a section of intake pipe arranged in the Y direction, a first gas blocking plate arranged on the section of intake manifold and a waste gas-air mixing region, wherein the circulation area of the intake pipe is reduced by the first gas blocking plate, and the boundary line of the first gas blocking plate in the intake pipe is a straight line, wherein the straight line is parallel to the X direction; the waste gas-air mixing region is positioned between the first gas blocking plate and an intake header pipe; and the mixed waste gas and air enter a cylinder through the first gas blocking plate. According to the invention, the NOx emission of a lean burn gasoline engine can be reduced to a certain degree, and the limit of lean burn of the lean burn gasoline engine can be increased.
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 vortex generating means.
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 promptly is a kind of advanced person's a 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 intake swirl generating means of being furnished with exhaust gas recirculation (EGR); This device can realize that waste gas produces eddy current when mixing back entering cylinder with fresh air; 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 realizes that through following technological scheme 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 the Y direction, is defined as the Z direction with X, vertical direction of Y direction while.The petrol engine intake swirl generating means of being furnished with exhaust gas recirculation (EGR) comprises: cylinder head, and intake valve is positioned at the intake duct of cylinder head, and the intake manifold that links to each other with intake duct also comprises: be arranged on one section suction tude on the Y direction; First airtight plate that on this section suction tude, is provided with, this first airtight plate reduces the suction tude circulation area here, and the separatrix of first airtight plate in suction tude be straight line, and this straight line parallel is in directions X; Waste gas between first airtight plate and intake manifold-air mixing district gets into cylinder through first airtight plate after the mixing.
As preferred version, said intake duct is communicated with air and motor exhaust respectively, and the air inlet ratio of any gas is 0%-100% in the two; Said first airtight plate is perpendicular to the Y direction; Said first airtight plate can move along the Z direction; The screening area of said first airtight plate in intake manifold be more than or equal to 0, and be less than or equal to 1/2 of this place's intake manifold sectional area.
The concrete structure scheme of first airtight plate can be: 1 aeroscopic plate is arranged between cylinder head and intake manifold, have on the aeroscopic plate and the identical gas port in cylinder head upper vent hole cross section, aeroscopic plate has the slideway or the chute that move along the Z direction; Said first airtight plate moves along the Z direction in slideway or chute; Said aeroscopic plate has a side opening at slideway or chute one side, and side opening is communicated with gas port and exhaust gas recirculation manifold; Waste gas mixed before getting into first airtight plate with air.
For multicylinder engine, need be furnished with the petrol engine intake swirl generating means of exhaust gas recirculation (EGR) according to N of the quantity of cylinder parallel connection, N >=2 o'clock, said 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 eddy current, and be directly proportional with area that monolateral air flue the is covered big more intake vortex strength of area that covers of the intensity of eddy motion is big more.
Traditional EGR Technology (EGR) is introduced waste gas among the intake manifold evenly to mix with common mixed regime of flow with fresh air and is sent 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, combustion gas also can make the reduction of propagation of flame speed make the fuel economy of petrol engine descend even being lighted; Power descends, and has seriously influenced the performance of the aspects such as Economy, power character of petrol engine, and these have all limited the lean flammability limit of gasoline engine to a certain extent.And the present invention is with respect to traditional EGR Technology; Can reduce NOx emissions of lean combustion engines to a certain extent; And can play certain improvement effect to Economy, the power character of petrol engine when EGR leads increasing, thereby can improve the limiting value of gasoline engine lean-burn.
Description of drawings
Fig. 1 is that first airtight plate is connected schematic representation with top board among the embodiment.Among the figure, 8 represent top board, and 12a, 12b, 12c represent first airtight plate, and 13 represent the threads of lead screw hole.
Fig. 2 is an aeroscopic plate partial cutaway schematic representation among the embodiment.Among the figure, 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 the right elevation of Fig. 1.
Fig. 4 is the sectional view of Fig. 2 along the A-A direction.
Fig. 5 is that Fig. 1 device and Fig. 2 device assemble the sectional view of back along the A-A direction.
Fig. 6 is that eddy current forms schematic representation in cylinder.Among the figure, 15 represent cylinder, and 16 represent intake duct.
Embodiment
Embodiment:
Map 1-6, the petrol engine intake swirl generating means of being furnished with exhaust gas recirculation (EGR) comprises: be arranged on one section suction tude on the Y direction; The first airtight plate 12a, 12b, the 12c that on this section intake manifold, are provided with; This first airtight plate 12a, 12b, 12c reduce the suction tude circulation area here; And the first airtight plate 12a, 12b, the separatrix of 12c in suction tude are straight line, and this straight line is parallel with directions X; The said first airtight plate 12a, 12b, 12c are perpendicular to the Y direction; The said first airtight plate 12a, 12b, 12c can move along the Z direction; The said first airtight plate 12a, 12b, 12c more than or equal to 0, and are less than or equal to 1/2 of this place's trachea cross-sectional area at the screening area at this place.1 aeroscopic plate 8 is arranged between cylinder head 17 and suction tude, have on the said aeroscopic plate 8 and identical gas port 7a, 7b, the 7c in cylinder head 17 upper vent hole cross sections, aeroscopic plate 8 has the slideway or the chute that move along the Z direction; The said first airtight plate 12a, 12b, 12c move along the Z direction in slideway or chute.Said aeroscopic plate has a side opening 10a, 10b, 10c at slideway or chute one side, and side opening 10a, 10b, 10c are communicated with gas port 7a, 7b, 7c and exhaust gas recirculation intake manifold; Said waste gas mixed before getting into the first airtight plate 12a, 12b, 12c with air.
For three cylinder engine, need roll flow generating apparatus according to three petrol engine air inlets of being furnished with exhaust gas recirculation (EGR) of quantity parallel connection of cylinder, three first airtight plates are connected by a top board 8 that extends along the Z direction, realize synchronization control.
Fixing threaded hole 11a on the aeroscopic plate, 11b, 11c, 11d are used for fixing aeroscopic plate.When cooling water temperature is lower than 50 ℃ or load less than 35% Max. torque, close the EGR valve, waste gas does not get into cylinder and participates in burning; When cooling water temperature is higher than 50 ℃, but when meeting greater than 70% Max. torque, close the EGR valve, waste gas does not get into cylinder and participates in burning.
In the working procedure: waste gas is from being got into by side opening 10a, 10b, 10c; Fresh air with the process intake manifold in gas port 7a, 7b, 7c mixes; Through getting into cylinder head behind the first airtight plate 12a, 12b, the 12c, get into cylinder through intake valve at last then.The screening area of first airtight plate is confirmed in the motion of leading screw 13 in threads of lead screw hole 9.
Claims (8)
1. the petrol engine intake swirl generating means of being furnished with exhaust gas recirculation (EGR), 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 the Y direction, is defined as the Z direction with X, vertical direction of Y direction while; Comprise: cylinder head, intake valve is positioned at the intake duct of cylinder head, and the intake manifold that links to each other with intake duct is characterized in that, also comprises: be arranged on one section suction tude on the Y direction; First airtight plate that on this section suction tude, is provided with, this first airtight plate reduces the suction tude circulation area here, and the separatrix of first airtight plate in suction tude be straight line, and this straight line parallel is in directions X; Waste gas between first airtight plate and intake manifold-air mixing district gets into cylinder through first airtight plate after the mixing.
2. according to the said air-intake of combustion engine vortex generating means of claim 1, it is characterized in that said intake duct is communicated with air and motor exhaust respectively, the air inlet ratio of any gas is 0%-100% in the two.
3. the petrol engine intake swirl generating means of being furnished with exhaust gas recirculation (EGR) according to claim 2 is characterized in that said first airtight plate is perpendicular to the Y direction.
4. the petrol engine intake swirl generating means of being furnished with exhaust gas recirculation (EGR) according to claim 3 is characterized in that said first airtight plate can move along the Z direction.
5. the petrol engine intake swirl generating means of being furnished with exhaust gas recirculation (EGR) according to claim 4 is characterized in that, the screening area of said first airtight plate in suction tude be more than or equal to 0, and is less than or equal to 1/2 of this place's suction tude sectional area.
6. according to the said petrol engine intake swirl generating means of being furnished with exhaust gas recirculation (EGR) of claim 5; It is characterized in that; Also comprise: the aeroscopic plate between cylinder head and suction tude; Have on the said aeroscopic plate and the identical gas port in cylinder head upper vent hole cross section, aeroscopic plate has the slideway or the chute that move along the Z direction; Said airtight plate moves along the Z direction in slideway or chute.
7. according to the said petrol engine intake swirl generating means of being furnished with exhaust gas recirculation (EGR) of claim 6, it is characterized in that said aeroscopic plate has a side opening at slideway or chute one side, side opening is communicated with gas port and exhaust gas recirculation manifold; Waste gas mixed before getting into first airtight plate with air.
8. any one said petrol engine intake swirl generating means of being furnished with exhaust gas recirculation (EGR) of a parallelly connected N claim 1 to 7 is characterized in that, N >=2, and said N first airtight plate connected by a top board that extends along the Z direction, realizes synchronization control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103501215A CN102374012A (en) | 2011-11-08 | 2011-11-08 | Gasoline engine intake swirl generating device with exhaust gas recirculation (EGR) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103501215A CN102374012A (en) | 2011-11-08 | 2011-11-08 | Gasoline engine intake swirl generating device with exhaust gas recirculation (EGR) |
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| CN102374012A true CN102374012A (en) | 2012-03-14 |
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| CN2011103501215A Pending CN102374012A (en) | 2011-11-08 | 2011-11-08 | Gasoline engine intake swirl generating device with exhaust gas recirculation (EGR) |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690120A (en) * | 1986-02-25 | 1987-09-01 | Eaton Corporation | Exhaust gas recirculation control system |
| JP2003227691A (en) * | 2002-02-06 | 2003-08-15 | Denso Corp | Exhaust heat exchanger |
| CN1755316A (en) * | 2004-07-23 | 2006-04-05 | 臼井国际产业株式会社 | Fin, method of fabricating the same and heat exchanger tube, heat exchanger and gas cooling apparatus |
| CN1912362A (en) * | 2005-08-12 | 2007-02-14 | 芜湖市中兴机械技术开发有限公司 | Engine induction manifold |
| JP2010038106A (en) * | 2008-08-07 | 2010-02-18 | Toyota Motor Corp | Intake manifold for internal combustion engine, and intake passage structure for internal combustion engine |
| CN101158317B (en) * | 2007-11-07 | 2011-09-21 | 奇瑞汽车股份有限公司 | High-speed diesel electronic control transverse currents continuousvariable mechanical installation |
-
2011
- 2011-11-08 CN CN2011103501215A patent/CN102374012A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690120A (en) * | 1986-02-25 | 1987-09-01 | Eaton Corporation | Exhaust gas recirculation control system |
| JP2003227691A (en) * | 2002-02-06 | 2003-08-15 | Denso Corp | Exhaust heat exchanger |
| CN1755316A (en) * | 2004-07-23 | 2006-04-05 | 臼井国际产业株式会社 | Fin, method of fabricating the same and heat exchanger tube, heat exchanger and gas cooling apparatus |
| CN1912362A (en) * | 2005-08-12 | 2007-02-14 | 芜湖市中兴机械技术开发有限公司 | Engine induction manifold |
| CN101158317B (en) * | 2007-11-07 | 2011-09-21 | 奇瑞汽车股份有限公司 | High-speed diesel electronic control transverse currents continuousvariable mechanical installation |
| JP2010038106A (en) * | 2008-08-07 | 2010-02-18 | Toyota Motor Corp | Intake manifold for internal combustion engine, and intake passage structure for internal combustion engine |
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Application publication date: 20120314 |