CN102787950A - Pressure differential gas flow device - Google Patents
Pressure differential gas flow device Download PDFInfo
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- CN102787950A CN102787950A CN2012102415043A CN201210241504A CN102787950A CN 102787950 A CN102787950 A CN 102787950A CN 2012102415043 A CN2012102415043 A CN 2012102415043A CN 201210241504 A CN201210241504 A CN 201210241504A CN 102787950 A CN102787950 A CN 102787950A
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- cavity volume
- connecting tube
- air inlet
- moving body
- engine
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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 discloses a pressure differential gas flow device, which belongs to the technical field of internal combustion engines. The pressure differential gas flow device comprises an air inlet tube, an engine, an air exhaust tube, an air compressor, a turbine, a connecting tube, a volume cavity, a moving body and an elastic component, wherein the connecting tube is communicated with the wall surface of the volume cavity; the moving body is arranged in the volume cavity, and is hermetically contacted with the inner wall surface of the volume cavity; a through tube passes through the left and right wall surfaces of the moving body; and the two ends of the elastic component are connected with the lower wall surface of the moving body and the lower wall surface of the volume cavity respectively. When the engine is under a medium and low-speed working condition, the moving body moves upwards in the volume cavity, the waste gas recycling rate is high, the exhaust temperature of each cylinder of the engine is low, and the overall performance is superior; and when the engine is under a high-speed working condition, the moving body moves downwards in the volume cavity, the waste gas recycling rate is low, the dynamic property of the engine is high, and the overall performance is superior. The pressure differential gas flow device is reasonable in design, is simple in structure, and is suitable for a waste gas recirculating system with a turbocharger.
Description
Technical field
What the present invention relates to is a kind of gas recirculation system of field of internal combustion engine, particularly a kind of differential gas communication device that has turbosupercharger.
Background technique
The noxious emission of motor is a main source that causes pollution of atmosphere, along with the significance of environmental protection problem increases day by day, reduces the important directions that this target of Engine's Harmful Emission becomes motor development in the world today.Along with the consumption of world oil goods rises year by year, international oil price is high, and the Economy of diesel-oil vehicle is outstanding day by day, this make diesel engine in power train in vehicle application in occupation of more and more important position.So carry out the research of harmful emission of diesel engine thing controlling method, be the top priority of being engaged in the diesel engine artificer.Gas recirculation system is to send the sub-fraction of the waste gas of diesel engine generation back to cylinder again.EGR gas since have inertia will the retarded combustion process, thereby that is to say that velocity of combustion will slow down the pressure forming process that causes in the firing chamber and slow down, main cause that oxynitrides can reduce that Here it is.In addition, improve ER EGR Rate total extraction flow is reduced, so total pollutant output quantity will reduce relatively in the toxic emission.When middle low speed operating mode, motor needs bigger ER EGR Rate, to reduce row's temperature, reduces to pollute; When high-speed working condition, motor needs less ER EGR Rate, to improve the power character of motor.
Retrieval through to the existing technology document is found; Chinese patent ZL200410063439.5; Patent name: electronic EGR gas control system, this patented technology provide a kind of device of controlling the engine exhaust recirculation rate, can take into account preferably motor in high rotating speed operating mode; But its ER EGR Rate variation be to realize through special control structure, thereby the more complicated that control system is become.
Summary of the invention
The present invention is directed to the deficiency of above-mentioned existing technology, a kind of differential gas communication device is provided, make its ER EGR Rate can self-control, take into account each rotating speed operating mode of motor preferably, and simple in structure, do not need special control mechanism.
The present invention realizes through following technological scheme; The present invention includes: compressor air inlet machine pipe, gas compressor, engine air inlet tube, motor, engine exhaust pipe, turbine, turbine exhaust pipe, coupling shaft, cavity volume, cavity volume upper wall surface, cavity volume lower wall surface, cavity volume left side wall, cavity volume right wall, cavity volume front face, cavity volume rear surface, moving body, elastic member, first connecting tube, second connecting tube, the 3rd connecting tube and run through pipe; The air inlet/outlet of gas compressor is connected with the air outlet of compressor air inlet machine pipe, the suction port of engine air inlet tube respectively; The air inlet/outlet of motor is connected with the air outlet of engine air inlet tube, the suction port of engine exhaust pipe respectively; The air inlet/outlet of turbine is connected with the air outlet of engine exhaust pipe, the suction port of turbine exhaust pipe respectively; Gas compressor is connected with turbine through coupling shaft; The cross section of cavity volume is a rectangular; Cavity volume upper wall surface, cavity volume lower wall surface, cavity volume left side wall, cavity volume right wall, cavity volume front face, the cavity volume rear surface is fixed is one; The two ends of first connecting tube are connected with compressor air inlet machine pipe, cavity volume left side wall respectively; The two ends of second connecting tube are connected with turbine exhaust pipe, the right wall of cavity volume respectively, and the two ends of the 3rd connecting tube are connected with engine air inlet tube, cavity volume upper wall surface respectively, contact in the moving body mounting volume chamber and with the internal face sealing of cavity volume; Run through the pipe run through moving body about two walls, the two ends of elastic member are connected with lower wall surface, the cavity volume lower wall surface of moving body respectively.
Further; In the present invention, elastic member is a spring, first connecting tube, second connecting tube, run through the pipe be straight pipe and internal diameter identical; The dead in line of the axis of first connecting tube and second connecting tube, the axis of first connecting tube and the axis that runs through pipe are at grade.
In working procedure of the present invention, moving body can move up and down in cavity volume.In motor is in during the low speed operating mode; The engine air inlet tube internal pressure is lower, and the cavity volume internal pressure of moving body top is also lower, and moving body moves up under the elastic reaction of elastic member; Thereby first connecting tube is connected with second connecting tube through running through pipe; ER EGR Rate increases, and each cylinder row temperature drop of motor is low, and the complete machine performance is more excellent; When motor is in high-speed working condition; The engine air inlet tube internal pressure is higher, and the cavity volume internal pressure of moving body top is also higher, and moving body moves down after overcoming the elastic force of elastic member and the pressure elasticity parts; Thereby first connecting tube is cut off mutually with second connecting tube; ER EGR Rate reduces, and engine power performance is better, and the complete machine performance is more excellent.
Compared with prior art; The present invention has following beneficial effect: the present invention is reasonable in design; Simple in structure; Be applicable to the gas recirculation system that has turbosupercharger, can take into account each rotating speed operating mode of motor, can make gas recirculation system not need special ER EGR Rate control mechanism again.
Description of drawings
Fig. 1 is the structural representation of the differential gas communication device of the present invention;
Fig. 2 is the structural representation of A-A section among Fig. 1;
Wherein: 1, compressor air inlet machine pipe, 2, gas compressor, 3, engine air inlet tube, 4, motor, 5, engine exhaust pipe, 6, turbine; 7, turbine exhaust pipe, 8, coupling shaft, 9, cavity volume, 10, the cavity volume upper wall surface, 11, the cavity volume lower wall surface; 12, cavity volume left side wall, 13, the right wall of cavity volume, 14, the cavity volume front face, 15, the cavity volume rear surface, 16, moving body; 17, elastic member, 18, first connecting tube, 19, second connecting tube, the 20, the 3rd connecting tube, 21, run through pipe.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment is a prerequisite with technological scheme of the present invention, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment
As depicted in figs. 1 and 2; The present invention includes: compressor air inlet machine pipe 1, gas compressor 2, engine air inlet tube 3, motor 4, engine exhaust pipe 5, turbine 6, turbine exhaust pipe 7, coupling shaft 8, cavity volume 9, cavity volume upper wall surface 10, cavity volume lower wall surface 11, cavity volume left side wall 12, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15, moving body 16, elastic member 17, first connecting tube 18, second connecting tube 19, the 3rd connecting tube 20 and run through pipe 21; The air inlet/outlet of gas compressor 2 is connected with the air outlet of compressor air inlet machine pipe 1, the suction port of engine air inlet tube 3 respectively; The air inlet/outlet of motor 4 is connected with the air outlet of engine air inlet tube 3, the suction port of engine exhaust pipe 5 respectively; The air inlet/outlet of turbine 6 is connected with the air outlet of engine exhaust pipe 5, the suction port of turbine exhaust pipe 7 respectively; Gas compressor 2 is connected with turbine 6 through coupling shaft 8; The cross section of cavity volume 9 is a rectangular; Cavity volume upper wall surface 10, cavity volume lower wall surface 11, cavity volume left side wall 12, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15 are fixed to be one; The two ends of first connecting tube 18 are connected with compressor air inlet machine pipe 1, cavity volume left side wall 12 respectively; The two ends of second connecting tube 19 are connected with turbine exhaust pipe 7, the right wall 13 of cavity volume respectively, and the two ends of the 3rd connecting tube 20 are connected with engine air inlet tube 3, cavity volume upper wall surface 10 respectively, contact in the moving body 16 mounting volume chambeies 9 and with the internal face sealing of cavity volume 9; Run through the pipe 21 run through moving body 16 about two walls; The two ends of elastic member 17 are connected with lower wall surface, the cavity volume lower wall surface 11 of moving body 16 respectively, and elastic member 17 is a spring, first connecting tube 18, second connecting tube 19, run through that pipe 21 is straight pipe and internal diameter is identical; The dead in line of the axis of first connecting tube 18 and second connecting tube 19, the axis of first connecting tube 18 with run through pipe 21 axis at grade.
In working procedure of the present invention, moving body 16 can move up and down in cavity volume 9.In motor 4 is in during the low speed operating mode; Engine air inlet tube 3 internal pressures are lower, and the cavity volume internal pressure of moving body 16 tops is also lower, and moving body 16 moves up under the elastic reaction of elastic member 17; Thereby first connecting tube 18 is connected with second connecting tube 19 through running through pipe 21; ER EGR Rate increases, and each cylinder row temperature drop of motor 4 is low, and the complete machine performance is more excellent; When motor is in high-speed working condition; Engine air inlet tube 3 internal pressures are higher, and the cavity volume internal pressure of moving body 16 tops is also higher, and moving body 16 moves down after the elastic force that overcomes elastic member 17 and pressure elasticity parts 17; Thereby first connecting tube 18 is cut off mutually with second connecting tube 19; ER EGR Rate reduces, and the power character of motor 4 is better, and the complete machine performance is more excellent.Therefore, the present invention can take into account each rotating speed operating mode of motor 4 preferably.
Claims (2)
1. differential gas communication device; Comprise compressor air inlet machine pipe (1), gas compressor (2), engine air inlet tube (3), motor (4), engine exhaust pipe (5), turbine (6), turbine exhaust pipe (7) and coupling shaft (8); The air inlet/outlet of gas compressor (2) is connected with the air outlet of compressor air inlet machine pipe (1), the suction port of engine air inlet tube (3) respectively; The air inlet/outlet of motor (4) is connected with the air outlet of engine air inlet tube (3), the suction port of engine exhaust pipe (5) respectively; The air inlet/outlet of turbine (6) is connected with the air outlet of engine exhaust pipe (5), the suction port of turbine exhaust pipe (7) respectively; Gas compressor (2) is connected with turbine (6) through coupling shaft (8); It is characterized in that also comprising cavity volume (9), cavity volume upper wall surface (10), cavity volume lower wall surface (11), cavity volume left side wall (12), cavity volume right wall (13), cavity volume front face (14), cavity volume rear surface (15), moving body (16), elastic member (17), first connecting tube (18), second connecting tube (19), the 3rd connecting tube (20) and run through pipe (21); The cross section of cavity volume (9) is a rectangular; Cavity volume upper wall surface (10), cavity volume lower wall surface (11), cavity volume left side wall (12), cavity volume right wall (13), cavity volume front face (14), cavity volume rear surface (15) is fixed is one; The two ends of first connecting tube (18) are connected with compressor air inlet machine pipe (1), cavity volume left side wall (12) respectively; The two ends of second connecting tube (19) are connected with turbine exhaust pipe (7), the right wall of cavity volume (13) respectively; The two ends of the 3rd connecting tube (20) are connected with engine air inlet tube (3), cavity volume upper wall surface (10) respectively; Contact in moving body (16) the mounting volume chamber (9) and with the internal face sealing of cavity volume (9); Run through pipe (21) run through moving body (16) about two walls, the two ends of elastic member (17) are connected with lower wall surface, the cavity volume lower wall surface (11) of moving body (16) respectively.
2. differential gas communication device according to claim 1; It is characterized in that said elastic member (17) is a spring; Said first connecting tube (18), second connecting tube (19), run through that pipe (21) is straight pipe and internal diameter is identical; The dead in line of the axis of first connecting tube (18) and second connecting tube (19), the axis of first connecting tube (18) and the axis that runs through pipe (21) are at grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102415043A CN102787950A (en) | 2012-07-12 | 2012-07-12 | Pressure differential gas flow device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102415043A CN102787950A (en) | 2012-07-12 | 2012-07-12 | Pressure differential gas flow device |
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| CN102787950A true CN102787950A (en) | 2012-11-21 |
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| CN2012102415043A Pending CN102787950A (en) | 2012-07-12 | 2012-07-12 | Pressure differential gas flow device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751987A1 (en) * | 1977-11-22 | 1979-05-23 | Motoren Turbinen Union | Engine with exhaust gas turbocharger - has variable cross-section injector to maintain efficiency under varying engine loads |
| KR20020031671A (en) * | 2000-10-23 | 2002-05-03 | 이계안 | Exhast pipe apparatus |
| CN2924201Y (en) * | 2006-05-30 | 2007-07-18 | 宝山钢铁股份有限公司 | Automatic cutoff and pressure release plunger valve for pressure meter |
| CN101341317A (en) * | 2006-04-26 | 2009-01-07 | 丰田自动车株式会社 | Exhaust gas recirculation apparatus for internal combustion engine and method of controlling exhaust gas recirculation apparatus |
| CN201318227Y (en) * | 2008-11-13 | 2009-09-30 | 山东大学 | Mechanical control type waste gas recycling device |
| CN102562369A (en) * | 2012-02-07 | 2012-07-11 | 上海交通大学 | Exhaust recirculating system controlled by aid of air inlet pressure |
-
2012
- 2012-07-12 CN CN2012102415043A patent/CN102787950A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751987A1 (en) * | 1977-11-22 | 1979-05-23 | Motoren Turbinen Union | Engine with exhaust gas turbocharger - has variable cross-section injector to maintain efficiency under varying engine loads |
| KR20020031671A (en) * | 2000-10-23 | 2002-05-03 | 이계안 | Exhast pipe apparatus |
| CN101341317A (en) * | 2006-04-26 | 2009-01-07 | 丰田自动车株式会社 | Exhaust gas recirculation apparatus for internal combustion engine and method of controlling exhaust gas recirculation apparatus |
| CN2924201Y (en) * | 2006-05-30 | 2007-07-18 | 宝山钢铁股份有限公司 | Automatic cutoff and pressure release plunger valve for pressure meter |
| CN201318227Y (en) * | 2008-11-13 | 2009-09-30 | 山东大学 | Mechanical control type waste gas recycling device |
| CN102562369A (en) * | 2012-02-07 | 2012-07-11 | 上海交通大学 | Exhaust recirculating system controlled by aid of air inlet pressure |
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Application publication date: 20121121 |