CN202732125U - Device with two serial low-pressure stage air passages - Google Patents
Device with two serial low-pressure stage air passages Download PDFInfo
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- CN202732125U CN202732125U CN201220383260.8U CN201220383260U CN202732125U CN 202732125 U CN202732125 U CN 202732125U CN 201220383260 U CN201220383260 U CN 201220383260U CN 202732125 U CN202732125 U CN 202732125U
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- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 abstract description 23
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000002912 waste gas Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
A device with two serial low-pressure stage air passages belongs to the technical field of internal combustion engines and comprises an air-in pipe, an engine, an exhaust pipe, an air compressor, a turbine, a connecting pipe, a volume cavity, a movable body and an elastic component, wherein the connecting pipe is communicated with the wall surface of the volume cavity; the movable body is mounted in the volume cavity and in sealing contact with the inner wall surface of the volume cavity; a through pipe penetrates the left wall surface and the right wall surface of the movable body; and the two ends of the elastic component are respectively connected with the lower wall surfaces of the movable body and of the volume cavity. According to the utility model, when the engine is in a low-middle speed working condition, the movable body moves upwards in the volume cavity, so that the waste gas recirculation rate is larger, the exhaust temperature of all cylinders of the engine is lower and the performance of a whole machine is higher; and when the engine is in a high speed working condition, the movable body moves downwards in the volume cavity, so that the waste gas recirculation rate is smaller, the engine dynamic property is better and the performance of a whole machine is higher. The device provided by the utility model is reasonable in design, simple in structure and suitable for an exhaust gas recirculation system fitted with a turbocharger.
Description
Technical field
The utility model relates to a kind of gas recirculation system of field of internal combustion engine, particularly a kind of two low pressure stage gas circuit tandem arrangements with 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 increasingly, reduces the important directions that this target of Engine's Harmful Emission becomes development of engine 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 so that diesel engine in power train in vehicle application in occupation of consequence more and more.So carry out the research of Harmful Emissions of Diesel Engine controlling method, it is the person's that is engaged in the Design Technology for Diesels top priority.Gas recirculation system is to send the sub-fraction of the waste gas of diesel engine generation back to cylinder again.Exhaust gas recirculation since have inertia will the retarded combustion process, thereby that is to say that velocity of combustion will slow down the pressure initiation 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 larger 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.
Find through the retrieval to the prior art document, China Patent No. ZL200410063439.5, patent name: electronic EGR gas control system, this patented technology provides a kind of device of control engine ER EGR Rate, can take into account preferably motor in high rotating speed operating mode; But its ER EGR Rate variation be to realize by special control structure, thereby the more complicated that control system is become.
Summary of the invention
The purpose of this utility model is to provide a kind of two low pressure stage gas circuit tandem arrangements, makes its ER EGR Rate can self-control, takes into account preferably the every speed operating mode of motor, and simple in structure, does not need special control mechanism.
The technical solution of the utility model is: a kind of two low pressure stage gas circuit tandem arrangements, 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 respectively with the air outlet of compressor air inlet machine pipe 1, the suction port of engine air inlet tube 3 is connected, the air inlet/outlet of motor 4 respectively with the air outlet of engine air inlet tube 3, the suction port of engine exhaust pipe 5 is connected, the air inlet/outlet of turbine 6 respectively with the air outlet of engine exhaust pipe 5, the suction port of turbine exhaust pipe 7 is connected, and gas compressor 2 is connected with turbine 6 by coupling shaft 8.Also comprise cavity volume 9, cavity volume upper wall surface 10, cavity volume lower wall surface 11, the left wall 12 of cavity volume, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15, moving body 16, elastic member 17, the first connecting tube 18, the second connecting tube 19, the 3rd connecting tube 20, run through pipe the 21 and the 4th connecting tube 22, the cross section of cavity volume 9 is rectangular, cavity volume upper wall surface 10, cavity volume lower wall surface 11, the left wall 12 of cavity volume, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15 fixed being integrated, the two ends of the first connecting tube 18 respectively with compressor air inlet machine pipe 1, the left wall 12 of cavity volume is connected, the two ends of the second connecting tube 19 respectively with turbine exhaust pipe 7, the right wall 13 of cavity volume is connected, the two ends of the 3rd connecting tube 20 respectively with engine exhaust pipe 5, cavity volume lower wall surface 11 is connected, the two ends of the 4th connecting tube 22 respectively with engine air inlet tube 3, cavity volume upper wall surface 10 is connected, moving body 16 is installed in the cavity volume 9 and with the internal face sealing of cavity volume 9 and is contacted, run through pipe 21 run through moving body 16 about two walls, the two ends of elastic member 17 respectively with the upper wall surface of moving body 16, cavity volume upper wall surface 10 is connected.
Described the first connecting tube 18, the 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 the first connecting tube 18 and the second connecting tube 19, the axis of the first connecting tube 18 is managed 21 axis at grade with running through.
Described elastic member 17 is spring.
Working principle of the present utility model is: moving body can move up and down in cavity volume.When motor is in middle low speed operating mode, the engine charge overpressure is lower, the cavity volume internal pressure of moving body top is also lower, moving body moves up under the stretching action of elastic member, thereby the first connecting tube is connected with the second connecting tube by running through pipe, ER EGR Rate increases, and each cylinder row temperature drop of motor is low, and overall performance is more excellent; When motor is in high-speed working condition, the engine charge overpressure is higher, the cavity volume internal pressure of moving body top is also higher, moving body moves down after overcoming the elastic force of elastic member and the tensile elasticity parts, thereby the first connecting tube and the second connecting tube are cut off mutually, ER EGR Rate reduces, and engine power performance is better, and overall performance is more excellent.The cavity volume of moving body below is connected with engine exhaust pipe by the 3rd connecting tube, can prevent the mobile of moving body transition when high-speed working condition downwards, in order to avoid cause the first connecting tube and the connection of the second connecting tube when high-speed working condition.
The beneficial effects of the utility model are: reasonable in design, simple in structure, be applicable to the gas recirculation system with turbosupercharger, can take into account the every speed operating mode of motor, can make again gas recirculation system not need special ER EGR Rate control mechanism.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of A-A section among Fig. 1;
Each label is among the figure: 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: the left wall of cavity volume, 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: the first connecting tubes, 19: the second connecting tubes, 20: the three connecting tubes, 21: run through pipe, 22: the four connecting tubes.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, but content of the present utility model is not limited to described scope.
Embodiment 1: shown in Fig. 1-2, a kind of two low pressure stage gas circuit tandem arrangements, 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 respectively with the air outlet of compressor air inlet machine pipe 1, the suction port of engine air inlet tube 3 is connected, the air inlet/outlet of motor 4 respectively with the air outlet of engine air inlet tube 3, the suction port of engine exhaust pipe 5 is connected, the air inlet/outlet of turbine 6 respectively with the air outlet of engine exhaust pipe 5, the suction port of turbine exhaust pipe 7 is connected, and gas compressor 2 is connected with turbine 6 by coupling shaft 8.Also comprise cavity volume 9, cavity volume upper wall surface 10, cavity volume lower wall surface 11, the left wall 12 of cavity volume, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15, moving body 16, elastic member 17, the first connecting tube 18, the second connecting tube 19, the 3rd connecting tube 20, run through pipe the 21 and the 4th connecting tube 22, the cross section of cavity volume 9 is rectangular, cavity volume upper wall surface 10, cavity volume lower wall surface 11, the left wall 12 of cavity volume, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15 fixed being integrated, the two ends of the first connecting tube 18 respectively with compressor air inlet machine pipe 1, the left wall 12 of cavity volume is connected, the two ends of the second connecting tube 19 respectively with turbine exhaust pipe 7, the right wall 13 of cavity volume is connected, the two ends of the 3rd connecting tube 20 respectively with engine exhaust pipe 5, cavity volume lower wall surface 11 is connected, the two ends of the 4th connecting tube 22 respectively with engine air inlet tube 3, cavity volume upper wall surface 10 is connected, moving body 16 is installed in the cavity volume 9 and with the internal face sealing of cavity volume 9 and is contacted, run through pipe 21 run through moving body 16 about two walls, the two ends of elastic member 17 respectively with the upper wall surface of moving body 16, cavity volume upper wall surface 10 is connected.The first connecting tube 18, the 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 the first connecting tube 18 and the second connecting tube 19, the axis of the first connecting tube 18 is managed 21 axis at grade with running through.Elastic member 17 is spring.
Embodiment 2: shown in Fig. 1-2, a kind of two low pressure stage gas circuit tandem arrangements, 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 respectively with the air outlet of compressor air inlet machine pipe 1, the suction port of engine air inlet tube 3 is connected, the air inlet/outlet of motor 4 respectively with the air outlet of engine air inlet tube 3, the suction port of engine exhaust pipe 5 is connected, the air inlet/outlet of turbine 6 respectively with the air outlet of engine exhaust pipe 5, the suction port of turbine exhaust pipe 7 is connected, and gas compressor 2 is connected with turbine 6 by coupling shaft 8.Also comprise cavity volume 9, cavity volume upper wall surface 10, cavity volume lower wall surface 11, the left wall 12 of cavity volume, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15, moving body 16, elastic member 17, the first connecting tube 18, the second connecting tube 19, the 3rd connecting tube 20, run through pipe the 21 and the 4th connecting tube 22, the cross section of cavity volume 9 is rectangular, cavity volume upper wall surface 10, cavity volume lower wall surface 11, the left wall 12 of cavity volume, the right wall 13 of cavity volume, cavity volume front face 14, cavity volume rear surface 15 fixed being integrated, the two ends of the first connecting tube 18 respectively with compressor air inlet machine pipe 1, the left wall 12 of cavity volume is connected, the two ends of the second connecting tube 19 respectively with turbine exhaust pipe 7, the right wall 13 of cavity volume is connected, the two ends of the 3rd connecting tube 20 respectively with engine exhaust pipe 5, cavity volume lower wall surface 11 is connected, the two ends of the 4th connecting tube 22 respectively with engine air inlet tube 3, cavity volume upper wall surface 10 is connected, moving body 16 is installed in the cavity volume 9 and with the internal face sealing of cavity volume 9 and is contacted, run through pipe 21 run through moving body 16 about two walls, the two ends of elastic member 17 respectively with the upper wall surface of moving body 16, cavity volume upper wall surface 10 is connected.
Claims (3)
1. low pressure stage gas circuit tandem arrangement, 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) respectively with the air outlet of compressor air inlet machine pipe (1), the suction port of engine air inlet tube (3) is connected, the air inlet/outlet of motor (4) respectively with the air outlet of engine air inlet tube (3), the suction port of engine exhaust pipe (5) is connected, the air inlet/outlet of turbine (6) respectively with the air outlet of engine exhaust pipe (5), the suction port of turbine exhaust pipe (7) is connected, gas compressor (2) is connected with turbine (6) by coupling shaft (8), it is characterized in that: also comprise cavity volume (9), cavity volume upper wall surface (10), cavity volume lower wall surface (11), the left wall of cavity volume (12), the right wall of cavity volume (13), cavity volume front face (14), cavity volume rear surface (15), moving body (16), elastic member (17), the first connecting tube (18), the second connecting tube (19), the 3rd connecting tube (20), run through pipe (21) and the 4th connecting tube (22), the cross section of cavity volume (9) is rectangular, cavity volume upper wall surface (10), cavity volume lower wall surface (11), the left wall of cavity volume (12), the right wall of cavity volume (13), cavity volume front face (14), fixed being integrated of cavity volume rear surface (15), the two ends of the first connecting tube (18) respectively with compressor air inlet machine pipe (1), the left wall of cavity volume (12) is connected, the two ends of the second connecting tube (19) respectively with turbine exhaust pipe (7), the right wall of cavity volume (13) is connected, the two ends of the 3rd connecting tube (20) respectively with engine exhaust pipe (5), cavity volume lower wall surface (11) is connected, the two ends of the 4th connecting tube (22) respectively with engine air inlet tube (3), cavity volume upper wall surface (10) is connected, moving body (16) is installed in the cavity volume (9) and with the internal face sealing of cavity volume (9) and is contacted, run through pipe (21) run through moving body (16) about two walls, the two ends of elastic member (17) respectively with the upper wall surface of moving body (16), cavity volume upper wall surface (10) is connected.
2. two low pressure stage gas circuit tandem arrangements according to claim 1, it is characterized in that: described the first connecting tube (18), the 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 the first connecting tube (18) and the second connecting tube (19), the axis of the first connecting tube (18) and the axis that runs through pipe (21) are at grade.
3. two low pressure stage gas circuit tandem arrangements according to claim 1, it is characterized in that: described elastic member (17) is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220383260.8U CN202732125U (en) | 2012-08-04 | 2012-08-04 | Device with two serial low-pressure stage air passages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220383260.8U CN202732125U (en) | 2012-08-04 | 2012-08-04 | Device with two serial low-pressure stage air passages |
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| Publication Number | Publication Date |
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| CN202732125U true CN202732125U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220383260.8U Expired - Fee Related CN202732125U (en) | 2012-08-04 | 2012-08-04 | Device with two serial low-pressure stage air passages |
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| CN (1) | CN202732125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573432A (en) * | 2013-09-24 | 2014-02-12 | 上海交通大学 | Pressure control type mechanical rotating mechanism |
-
2012
- 2012-08-04 CN CN201220383260.8U patent/CN202732125U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573432A (en) * | 2013-09-24 | 2014-02-12 | 上海交通大学 | Pressure control type mechanical rotating mechanism |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150804 |
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| EXPY | Termination of patent right or utility model |