CN103644050A - Chain transmission type low-pressure exhaust circulation system - Google Patents
Chain transmission type low-pressure exhaust circulation system Download PDFInfo
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- CN103644050A CN103644050A CN201310616584.0A CN201310616584A CN103644050A CN 103644050 A CN103644050 A CN 103644050A CN 201310616584 A CN201310616584 A CN 201310616584A CN 103644050 A CN103644050 A CN 103644050A
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- running shaft
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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
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
A chain transmission type low-pressure exhaust circulation system comprises a gas compressor, an engine, a turbine, connection tubes, a volume cavity, an elastic part and a rotary element. The rotary element is connected with the left wall surface of a fixing plate, two ends of the first connection tube are communicated with a gas compressor gas inlet tube and a turbine gas outlet tube respectively, one end of the second connection tube is communicated with an engine exhaust tube, and the other end is communicated with the volume cavity. When the pressure of the engine exhaust tube is high, a butterfly valve is driven by the rotary element to rotate, the exhaust recycling rate of the engine is large, and the engine detonation pressure is low; when the pressure of the engine exhaust tube is low, the butterfly valve is driven by the rotary element to rotate anticlockwise, the exhaust recycling rate of the engine is small, and the engine oil consumption is low. The system is reasonable in design, simple in structure and applicable to a supercharged engine.
Description
Technical field
What the present invention relates to is the exhaust gas recycling system in a kind of mechanical designing technique field, particularly a kind of chain driven type low pressure exhaust circulatory system.
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 make 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 Design Technology for Diesels top priority.Exhaust gas recycling system is to send the sub-fraction of the waste gas of diesel engine generation back to cylinder again.Exhaust gas recirculation will retarded combustion process owing to having inertia, thereby that is to say that velocity of combustion will slow down the pressure initiation process causing in firing chamber and slow down, main cause that oxynitrides can reduce that Here it is.In addition, improve ER EGR Rate and can make total extraction flow reduce, so in toxic emission, total pollutant output quantity will reduce relatively.When middling speed operating mode, motor needs larger exhaust gas recirculation rate, to reduce row's temperature, reduces to pollute; When low speed operating mode, motor needs less exhaust gas recirculation rate, to improve the air inflow of motor.
Through the retrieval of prior art document is found, China Patent No. ZL200410063439.5, patent name: electronic EGR gas control system, this patented technology provides a kind of device of control engine exhaust gas recirculation rate, can take into account preferably motor in high rotating speed operating mode; But the variation of its exhaust gas recirculation rate is to realize by special control structure, thus the more complicated that control system is become.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of chain driven type low pressure exhaust circulatory system is provided, has made its exhaust gas recirculation rate can self-control, taken into account preferably the middle and slow speed of revolution operating mode of motor, and simple in structure, do not need special control mechanism.
The present invention is achieved through the following technical solutions, 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, the first connecting tube, the first running shaft, butterfly valve, the second connecting tube, the second running shaft, chain, cavity volume, fixed plate, solid of rotation and elastic member, the air inlet/outlet of gas compressor respectively with the air outlet of compressor air inlet machine pipe, the suction port of engine air inlet tube is connected, the air inlet/outlet of motor respectively with the air outlet of engine air inlet tube, the suction port of engine exhaust pipe is connected, the air inlet/outlet of turbine respectively with the air outlet of engine exhaust pipe, the suction port of turbine exhaust pipe is connected, gas compressor is coaxially connected by coupling shaft with turbine, the rear end of the first running shaft is embedded on the inwall of the first connecting tube through after the first connecting tube, the front end of the first running shaft is in the outside of the first connecting tube, butterfly valve is arranged in the first connecting tube and is consolidated with the first running shaft, the cross section of cavity volume is circular, and the cross section of solid of rotation is circular-arc, cavity volume, the longitudinal section of solid of rotation is rectangular, the rear end of the second running shaft is embedded on the rear wall of cavity volume through after cavity volume, the front end of the second running shaft is in the outside of cavity volume, solid of rotation is arranged in cavity volume and is consolidated with the second running shaft, the side wall surface of solid of rotation contacts with the sealing of the wall of cavity volume, one end of fixed plate and the wall of cavity volume are consolidated, and the other end of fixed plate contacts with the second rotation axis seal, the front end of the first running shaft, the front end of the second running shaft links together by chain, and solid of rotation links together by the left wall of elastic member and fixed plate, and the two ends of the first connecting tube are compressor air inlet machine pipe respectively, turbine exhaust pipe is connected, and one end of the second connecting tube is connected with engine exhaust pipe, and the other end of the second connecting tube is connected with cavity volume.
Further, elastic member is spring in the present invention, and the first connecting tube, the second connecting tube are uniform section pipe, and the cross section of butterfly valve is circular, and the axis of the first running shaft is parallel with the axis of the second running shaft.
In working procedure of the present invention, solid of rotation can rotate freely in cavity volume, and solid of rotation, the second running shaft are consolidated, and the first running shaft is connected by chain with the second running shaft, and butterfly valve and the first running shaft are consolidated; Therefore, solid of rotation, the first running shaft, the second running shaft, butterfly valve can synchronous rotary.When engine exhaust overpressure is larger, pressure in the cavity volume on fixed plate right side is also larger, solid of rotation drives butterfly valve to turn clockwise and pressure elasticity parts, in the first connecting tube, throat area becomes large, engine exhaust recirculation rate increases, thereby the detonation pressure of motor and maximum combustion temperature are reduced; When engine exhaust overpressure hour, pressure in the cavity volume on fixed plate right side is also less, elastic reaction following rotator at elastic member is rotated counterclockwise, solid of rotation drives butterfly valve to be rotated counterclockwise, in the first connecting tube, throat area diminishes again, engine exhaust recirculation rate reduces, thereby air input of engine by air is increased, fuel consumption reduction.
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 exhaust gas recycling system with turbosupercharger, can take into account the middle and slow speed of revolution operating mode of motor, can make again exhaust gas recycling system not need special exhaust gas recirculation rate control mechanism.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of A-A section in Fig. 1;
Fig. 3 is the structural representation of B-B section in Fig. 1;
Fig. 4 is the structural representation of C-C section in Fig. 1;
Fig. 5 is chain structure schematic diagram of the present invention;
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, the 9, first connecting tube, 10, the first running shaft, 11, butterfly valve, the 12, second connecting tube, 13, the second running shaft, 14, chain, 15, cavity volume, 16, fixed plate, 17, solid of rotation, 18, elastic member.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, the present embodiment be take technical solution of the present invention as prerequisite, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
embodiment
As shown in Figures 1 to 5, 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, the first connecting tube 9, the first running shaft 10, butterfly valve 11, the second connecting tube 12, the second running shaft 13, chain 14, cavity volume 15, fixed plate 16, solid of rotation 17 and elastic member 18, 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 coaxially connected by coupling shaft 8 with turbine 6, the rear end of the first running shaft 10 is embedded on the inwall of the first connecting tube 9 through after the first connecting tube 9, the front end of the first running shaft 10 is in the outside of the first connecting tube 9, butterfly valve 11 is arranged in the first connecting tube 9 and is consolidated with the first running shaft 10, the cross section of cavity volume 15 is circular, and the cross section of solid of rotation 17 is circular-arc, cavity volume 15, the longitudinal section of solid of rotation 17 is rectangular, the rear end of the second running shaft 13 is embedded on the rear wall of cavity volume 15 through after cavity volume 15, the front end of the second running shaft 13 is in the outside of cavity volume 15, solid of rotation 17 is arranged in cavity volume 15 and is consolidated with the second running shaft 13, the side wall surface of solid of rotation 17 contacts with the wall sealing of cavity volume 15, the wall of one end of fixed plate 16 and cavity volume 15 is consolidated, the other end of fixed plate 16 contacts with the second running shaft 13 sealings, the front end of the first running shaft 10, the front end of the second running shaft 13 links together by chain 14, and solid of rotation 17 links together by elastic member 18 and the left wall of fixed plate 16, and the two ends of the first connecting tube 9 are compressor air inlet machine pipe 1 respectively, turbine exhaust pipe 7 is connected, and one end of the second connecting tube 12 is connected with engine exhaust pipe 5, and the other end of the second connecting tube 12 is connected with cavity volume 15, and elastic member 18 is spring, the first connecting tube 9, the second connecting tube 12 is uniform section pipe, and the cross section of butterfly valve 11 is circular, and the axis of the first running shaft 10 is parallel with the axis of the second running shaft 13.
In working procedure of the present invention, solid of rotation 17 can rotate freely in cavity volume 15, solid of rotation 17, the second running shaft 13 are consolidated, and the first running shaft 10 is connected by chain 14 with the second running shaft 13, and butterfly valve 11 and the first running shaft 10 are consolidated; Therefore, solid of rotation 17, the first running shaft 10, the second running shaft 13, butterfly valve 11 can synchronous rotary.When engine exhaust pipe 5 internal pressures are when larger, cavity volume 15 internal pressures on fixed plate 16 right sides are also larger, solid of rotation 17 drives butterfly valve 11 to turn clockwise and pressure elasticity parts 18, it is large that throat area in the first connecting tube 9 becomes, engine exhaust recirculation rate increases, thereby the detonation pressure of motor and maximum combustion temperature are reduced; When engine exhaust pipe 5 internal pressures hour, cavity volume 15 internal pressures on fixed plate 16 right sides are also less, elastic reaction following rotator 17 at elastic member 18 is rotated counterclockwise, solid of rotation 17 drives butterfly valve 11 to be rotated counterclockwise, throat area in the first connecting tube 9 diminishes again, engine exhaust recirculation rate reduces, thereby air input of engine by air is increased, fuel consumption reduction.
Claims (2)
1. the chain driven type low pressure exhaust circulatory system, 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 coaxially connected by coupling shaft (8) with turbine (6), it is characterized in that, also comprise the first connecting tube (9), the first running shaft (10), butterfly valve (11), the second connecting tube (12), the second running shaft (13), chain (14), cavity volume (15), fixed plate (16), solid of rotation (17) and elastic member (18), the rear end of the first running shaft (10) is embedded on the inwall of the first connecting tube (9) through after the first connecting tube (9), the front end of the first running shaft (10) is in the outside of the first connecting tube (9), butterfly valve (11) is arranged in the first connecting tube (9) and is consolidated with the first running shaft (10), the cross section of cavity volume (15) is circular, the cross section of solid of rotation (17) is circular-arc, cavity volume (15), the longitudinal section of solid of rotation (17) is rectangular, the rear end of the second running shaft (13) is embedded on the rear wall of cavity volume (15) through after cavity volume (15), the front end of the second running shaft (13) is in the outside of cavity volume (15), solid of rotation (17) is arranged in cavity volume (15) and is consolidated with the second running shaft (13), the side wall surface of solid of rotation (17) contacts with the wall sealing of cavity volume (15), the wall of one end of fixed plate (16) and cavity volume (15) is consolidated, the other end of fixed plate (16) contacts with the second running shaft (13) sealing, the front end of the first running shaft (10), the front end of the second running shaft (13) links together by chain (14), solid of rotation (17) links together by elastic member (18) and the left wall of fixed plate (16), the two ends of the first connecting tube (9) are compressor air inlet machine pipe (1) respectively, turbine exhaust pipe (7) is connected, one end of the second connecting tube (12) is connected with engine exhaust pipe (5), the other end of the second connecting tube (12) is connected with cavity volume (15).
2. the chain driven type low pressure exhaust circulatory system according to claim 1, it is characterized in that, elastic member (18) is spring, the first connecting tube (9), the second connecting tube (12) are uniform section pipe, the cross section of butterfly valve (11) is circular, and the axis of the first running shaft (10) is parallel with the axis of the second running shaft (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310616584.0A CN103644050A (en) | 2013-11-27 | 2013-11-27 | Chain transmission type low-pressure exhaust circulation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310616584.0A CN103644050A (en) | 2013-11-27 | 2013-11-27 | Chain transmission type low-pressure exhaust circulation system |
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| CN103644050A true CN103644050A (en) | 2014-03-19 |
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| CN201310616584.0A Pending CN103644050A (en) | 2013-11-27 | 2013-11-27 | Chain transmission type low-pressure exhaust circulation system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536524A (en) * | 2012-02-07 | 2012-07-04 | 上海交通大学 | Exhaust-pressure regulated exhaust-gas recirculating system |
| CN103291471A (en) * | 2013-05-28 | 2013-09-11 | 上海交通大学 | Air valve throat area control system |
| CN103382888A (en) * | 2013-07-25 | 2013-11-06 | 上海交通大学 | Double-shaft synchronous control mechanism for exhaust pipe throat area |
-
2013
- 2013-11-27 CN CN201310616584.0A patent/CN103644050A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536524A (en) * | 2012-02-07 | 2012-07-04 | 上海交通大学 | Exhaust-pressure regulated exhaust-gas recirculating system |
| CN103291471A (en) * | 2013-05-28 | 2013-09-11 | 上海交通大学 | Air valve throat area control system |
| CN103382888A (en) * | 2013-07-25 | 2013-11-06 | 上海交通大学 | Double-shaft synchronous control mechanism for exhaust pipe throat area |
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Application publication date: 20140319 |