CN103573477A - Flow control system with area-adjustable throat part - Google Patents
Flow control system with area-adjustable throat part Download PDFInfo
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- CN103573477A CN103573477A CN201310442366.XA CN201310442366A CN103573477A CN 103573477 A CN103573477 A CN 103573477A CN 201310442366 A CN201310442366 A CN 201310442366A CN 103573477 A CN103573477 A CN 103573477A
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Abstract
A flow control system with area-adjustable throat part in the technical field of mechanical design comprises a compressor, a motor, a turbine, a connecting pipe, a valve holder, a valve body, a rotary shaft, a volume cavity, a rotary body and an elastic part; the rotary body is mounted in the volume cavity and is hermetically connected with the inner wall surface of the volume cavity; the right wall surface of a partition plate is connected with the rotary body by the elastic part; two ends of a first connecting pipe are respectively communicated with a turbine exhausting pipe and the gas inlet of a volume chamber; two ends of a third connecting pipe are respectively communicated with the gas inlet pipe of the motor and the volume cavity at the left side of the partition plate; when the gas inlet pipe of the motor has higher pressure, the rotary body drives the valve body to rotate clockwise, the exhausting recirculation rate of the motor is larger, and the blasting pressure of the motor is lower; when the gas inlet pipe of the motor has lower pressure, the rotary body drives the valve body to rotate counterclockwise, the motor is smaller in exhausting recirculation rate and lower in oil consumption. The flow control system with the area-adjustable throat part is reasonable in design, simpler in structure, and suitable for the exhausting recirculation systems of boosting motors.
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 throat area regulating type flow control 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 throat area regulating type flow control 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 second connecting tube, the 3rd connecting tube, valve seat, valve body, cavity volume, dividing plate, solid of rotation, running shaft 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 upper end of valve seat is with interior threaded hole, the lower end of valve seat is with chamber volume, the upper end of valve body is with outside thread, valve body is arranged in valve seat, the interior threaded hole of the outside thread of valve body upper end and valve seat upper end matches, the lower end of valve body is arranged in chamber volume, the wall of cavity volume is all consolidated, the longitudinal section of cavity volume is rectangular, solid of rotation is arranged in cavity volume and with the internal face sealing of cavity volume and contacts, the cross section of cavity volume is for all circular, the cross section of solid of rotation is for all circular-arc, the outer side wall of running shaft forms the madial wall of cavity volume, the axis of cavity volume, the axis of running shaft, valve axis coincides together, valve body passes running shaft and is consolidated with running shaft, solid of rotation and running shaft are consolidated, dividing plate be arranged in cavity volume and be positioned at cavity volume under, the upper end of dividing plate contacts with rotation axis seal, the right wall of dividing plate is connected with solid of rotation by elastic member, the two ends of the first connecting tube respectively with turbine exhaust pipe, the suction port of chamber volume is connected, the two ends of the second connecting tube respectively with the air outlet of chamber volume, compressor air inlet machine pipe is connected, the two ends of the 3rd connecting tube respectively with engine air inlet tube, the cavity volume in dividing plate left side is connected.
Further, elastic member is spring in the present invention, and the first connecting tube, the 3rd connecting tube are uniform section pipe.
In working procedure of the present invention, solid of rotation can rotate freely in cavity volume, and solid of rotation, running shaft, valve body are consolidated.When engine charge overpressure is larger, the cavity volume internal pressure in dividing plate left side is also larger, solid of rotation turns clockwise and pressure elasticity parts, running shaft and valve body also synchronously turn clockwise, it is large that throat area between valve body and valve seat becomes, engine exhaust recirculation rate increases, thereby the detonation pressure of motor and maximum combustion temperature are reduced; When engine charge overpressure hour, the cavity volume internal pressure in dividing plate left side is also less, elastic reaction following rotator at elastic member is rotated counterclockwise, running shaft and valve body are also synchronously rotated counterclockwise, throat area between valve body and valve seat diminishes, 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. 2;
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, the 10, second connecting tube, 11, the 3rd connecting tube, 12, valve seat, 13, valve body, 14, chamber volume, 15, cavity volume, 16, dividing plate, 17, solid of rotation, 18, running shaft, 19, 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 Figure 1 to Figure 3, 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 second connecting tube 10, the 3rd connecting tube 11, valve seat 12, valve body 13, cavity volume 15, dividing plate 16, solid of rotation 17, running shaft 18 and elastic member 19, 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 upper end of valve seat 12 is with interior threaded hole, the lower end of valve seat 12 is with chamber volume 14, the upper end of valve body 13 is with outside thread, valve body 13 is arranged in valve seat 12, the interior threaded hole of the outside thread of valve body 13 upper ends and valve seat 12 upper ends matches, the lower end of valve body 13 is arranged in chamber volume 14, the wall of cavity volume 15 is all consolidated, the longitudinal section of cavity volume 15 is rectangular, solid of rotation 17 is arranged in cavity volume 15 and with the internal face sealing of cavity volume 15 and contacts, the cross section of cavity volume 15 is for all circular, the cross section of solid of rotation 17 is for all circular-arc, the outer side wall of running shaft 18 forms the madial wall of cavity volume 15, the axis of cavity volume 15, the axis of running shaft 18, valve body 13 deads in line together, valve body 13 passes running shaft 18 and is consolidated with running shaft 18, solid of rotation 17 is consolidated with running shaft 18, dividing plate 16 be arranged in cavity volume 15 and be positioned at cavity volume 15 under, the upper end of dividing plate 16 contacts with running shaft 18 sealings, the right wall of dividing plate 16 is connected with solid of rotation 17 by elastic member 19, the two ends of the first connecting tube 9 respectively with turbine exhaust pipe 7, the suction port of chamber volume 14 is connected, the two ends of the second connecting tube 10 respectively with the air outlet of chamber volume 14, compressor air inlet machine pipe 1 is connected, the two ends of the 3rd connecting tube 11 respectively with engine air inlet tube 3, the cavity volume 16 in dividing plate 16 left sides is connected, and elastic member 19 is spring, the first connecting tube 9, the 3rd connecting tube 11 is uniform section pipe.
In the present invention, solid of rotation 17 can rotate freely in cavity volume 15.When engine air inlet tube 3 internal pressures are when larger, cavity volume 15 internal pressures in dividing plate 16 left sides are also larger, solid of rotation 17 turns clockwise and pressure elasticity parts 19, running shaft 18 and valve body 13 also synchronously turn clockwise, it is large that throat area between valve body 13 and valve seat 12 becomes, engine exhaust recirculation rate increases, thereby the detonation pressure of motor and maximum combustion temperature are reduced; When engine air inlet tube 3 internal pressures hour, cavity volume 15 internal pressures in dividing plate 16 left sides are also less, elastic reaction following rotator 17 at elastic member 19 is rotated counterclockwise, running shaft 18 and valve body 13 are also synchronously rotated counterclockwise, throat area between valve body 13 and valve seat 12 diminishes, engine exhaust recirculation rate reduces, thereby air input of engine by air is increased, fuel consumption reduction.
Claims (2)
1. a throat area regulating type flow control 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 second connecting tube (10), the 3rd connecting tube (11), valve seat (12), valve body (13), cavity volume (15), dividing plate (16), solid of rotation (17), running shaft (18) and elastic member (19), the upper end of valve seat (12) is with interior threaded hole, the lower end of valve seat (12) is with chamber volume (14), the upper end of valve body (13) is with outside thread, valve body (13) is arranged in valve seat (12), the interior threaded hole of the outside thread of valve body (13) upper end and valve seat (12) upper end matches, the lower end of valve body (13) is arranged in chamber volume (14), the wall of cavity volume (15) is all consolidated, the longitudinal section of cavity volume (15) is rectangular, solid of rotation (17) is arranged in cavity volume (15) and with the internal face sealing of cavity volume (15) and contacts, the cross section of cavity volume (15) is for all circular, the cross section of solid of rotation (17) is for all circular-arc, the outer side wall of running shaft (18) forms the madial wall of cavity volume (15), the axis of cavity volume (15), the axis of running shaft (18), valve body (13) dead in line together, valve body (13) passes running shaft (18) and is consolidated with running shaft (18), solid of rotation (17) is consolidated with running shaft (18), dividing plate (16) be arranged in cavity volume (15) and be positioned at cavity volume (15) under, the upper end of dividing plate (16) contacts with running shaft (18) sealing, the right wall of dividing plate (16) is connected with solid of rotation (17) by elastic member (19), the two ends of the first connecting tube (9) respectively with turbine exhaust pipe (7), the suction port of chamber volume (14) is connected, the two ends of the second connecting tube (10) respectively with the air outlet of chamber volume (14), compressor air inlet machine pipe (1) is connected, the two ends of the 3rd connecting tube (11) respectively with engine air inlet tube (3), the cavity volume (16) in dividing plate (16) left side is connected.
2. throat area regulating type flow control system according to claim 1, is characterized in that, elastic member (19) is spring, and the first connecting tube (9), the 3rd connecting tube (11) are uniform section pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310442366.XA CN103573477A (en) | 2013-09-24 | 2013-09-24 | Flow control system with area-adjustable throat part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310442366.XA CN103573477A (en) | 2013-09-24 | 2013-09-24 | Flow control system with area-adjustable throat part |
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| CN103573477A true CN103573477A (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310442366.XA Pending CN103573477A (en) | 2013-09-24 | 2013-09-24 | Flow control system with area-adjustable throat part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545537A (en) * | 2015-12-21 | 2016-05-04 | 施灵伟 | Low-pressure gas recirculation regulating system |
| CN105781721A (en) * | 2016-03-02 | 2016-07-20 | 浙江大学 | Indirect energy-efficient emission reduction control method of variable area turbocharged diesel engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291443A (en) * | 2013-05-17 | 2013-09-11 | 上海交通大学 | Exhaust branch pipe outlet area regulating mechanism with chains |
| CN103291433A (en) * | 2013-05-17 | 2013-09-11 | 上海交通大学 | Triaxial synchronous type variable exhaust branch reducing rate system |
| CN103291470A (en) * | 2013-05-28 | 2013-09-11 | 上海交通大学 | Pneumatic-control valve lift regulating mechanism |
| CN103291503A (en) * | 2013-05-24 | 2013-09-11 | 上海交通大学 | Rotary exhaust gas flow rate regulating system |
-
2013
- 2013-09-24 CN CN201310442366.XA patent/CN103573477A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291443A (en) * | 2013-05-17 | 2013-09-11 | 上海交通大学 | Exhaust branch pipe outlet area regulating mechanism with chains |
| CN103291433A (en) * | 2013-05-17 | 2013-09-11 | 上海交通大学 | Triaxial synchronous type variable exhaust branch reducing rate system |
| CN103291503A (en) * | 2013-05-24 | 2013-09-11 | 上海交通大学 | Rotary exhaust gas flow rate regulating system |
| CN103291470A (en) * | 2013-05-28 | 2013-09-11 | 上海交通大学 | Pneumatic-control valve lift regulating mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545537A (en) * | 2015-12-21 | 2016-05-04 | 施灵伟 | Low-pressure gas recirculation regulating system |
| CN105781721A (en) * | 2016-03-02 | 2016-07-20 | 浙江大学 | Indirect energy-efficient emission reduction control method of variable area turbocharged diesel engine |
| CN105781721B (en) * | 2016-03-02 | 2018-02-23 | 浙江大学 | A kind of variable cross section turbo-charging diesel motor indirect energy saving emission reduction control method |
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Application publication date: 20140212 |