CN104763558A - Low-pressure exhaust recirculation device - Google Patents
Low-pressure exhaust recirculation device Download PDFInfo
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- CN104763558A CN104763558A CN201510107630.3A CN201510107630A CN104763558A CN 104763558 A CN104763558 A CN 104763558A CN 201510107630 A CN201510107630 A CN 201510107630A CN 104763558 A CN104763558 A CN 104763558A
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- moving body
- turbine
- exhaust
- pipe
- control chamber
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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
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention relates to a low-pressure exhaust recirculation device and belongs to the technical field of internal combustion engines. The device comprises an exhaust circulation tube, a rotation shaft, a rotation plate, an adjusting rod, a control cavity, a spring, moving elements and a control tube. The rotation shaft is embedded in the exhaust circulation tube, one end of the rotation plate is fixedly connected with the rotation shaft, and slope structures are formed in longitudinal sections of the first moving element and the second moving element and are matched mutually. One end of the control tube penetrates the right wall face of the control cavity to be communicated with the inner cavity, and the other end of the control tube is communicated with a turbine exhaust tube between a turbine and a silencer. By means of the device, when the engine load is large, the exhaust recirculation rate is high; when the engine load is small, the exhaust recirculation rate is low. The device is reasonable in design, simple in structure and applicable to a diesel engine recirculation system.
Description
Technical field
The invention belongs to internal combustion (IC) Engine Design technical field, specifically, be a kind of can the low pressure exhaust recycling device of exhaust gas recirculatioon self-control.
Background technique
Exhaust gas recirculatioon is that a part for Exhaust Gas goes out and imports the technology (gimmick or method) that suction side makes its air-breathing once again by automobile compact internal combustion engine after combustion, main purpose is that the nitrogen oxide reduced in Exhaust Gas can improve rate of fuel consumption rate with when sharing sub load, gets the prefix " EGR " of its each English individual character for common name.The effect of exhaust gas recirculatioon egr system is the discharge reducing oxynitrides.Nitrogen oxide is under the high temperature conditions, the compound being reacted by the oxygen in air and nitrogen and formed, and visible nitrogen oxide is not derive from fuel, but from air.Therefore, combustion temperature is higher, and high-temperature duration is longer, and the growing amount of nitrogen oxide is more; Ignition advance angle is larger, can affect the raising of combustion temperature, thus adds the effluent concentration of nitrogen oxide.According to the different operating modes of motor, a part of waste gas is incorporated in cylinder again, with inflammable mixture mixed combustion again, thus reduces velocity of combustion and temperature, decrease the growing amount of nitrogen oxide.The introducing of EGR can reduce the fire behaviour of inflammable gas, makes the power of motor decline to some extent, and therefore the most general control of the circulation of EGR is about 5%-15%.Therefore, when high load operating mode, motor needs larger exhaust gas recirculation rate, to reduce row's temperature, reduces to pollute; When small load condition, motor needs less exhaust gas recirculation rate, to improve the power character of motor.
Through finding the retrieval of prior art document, China Patent No. ZL200410063439.5, patent name: electronic EGR gas control system, this patented technology provides a kind of device controlling engine exhaust recirculation rate, can take into account the middle and high load working condition of motor preferably; But the change of its exhaust gas recirculation rate is realized by special control structure, control system becomes more complicated.
Summary of the invention
The present invention is directed to above-mentioned deficiency, a kind of low pressure exhaust recycling device is provided, the self-control of supercharged engine exhaust gas recirculatioon can be realized.
The present invention is achieved through the following technical solutions, the present invention includes suction tude, air filter, gas compressor, motor, engine exhaust pipe, turbine, turbine exhaust pipe, baffler, exhaust cycle pipe, running shaft, swivel plate, control chamber, first moving body, first spring, second moving body, second spring, adjustable lever, control valve, the suction port of motor is connected with the air outlet of suction tude, the air inlet/outlet of engine exhaust pipe respectively with the air outlet of motor, the suction port of turbine is connected, and the suction port of turbine exhaust pipe is connected with the air outlet of turbine, air filter, gas compressor is connected in turn in suction tude, baffler is connected on turbine exhaust pipe, one end of exhaust cycle pipe is connected with turbine exhaust pipe after turbine, the other end of exhaust cycle pipe is connected with suction tude after air filter, running shaft is embedded in exhaust cycle pipe, swivel plate is arranged in exhaust cycle pipe and one end and running shaft are consolidated, and exhaust cycle pipe internal cavity cross section is rectangular, the first moving body, second moving body is arranged in control chamber, and the internal cavity cross section of control chamber is rectangular, the first moving body, the cross section of the second moving body is rectangular, the first moving body, the longitudinal section of the second moving body all cooperatively interacts with ramp structure, one end of adjustable lever and the other end of swivel plate hinged, the other end of adjustable lever is through hinged with the lower wall surface of the second moving body after the lower wall surface of control chamber, the lower wall surface of the second moving body is linked together by the lower wall surface of the second spring and control chamber, the left wall of the first moving body is linked together by the left wall of the first spring and control chamber, one end of control valve is connected with its internal cavity through after the right wall of control chamber, the other end of control valve and turbine, turbine exhaust pipe between baffler is connected.
The invention has the beneficial effects as follows: the present invention is reasonable in design, structure is simple, can realize the self-control of supercharged engine exhaust gas recirculatioon.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the structural representation of A-A section in Fig. 1;
Fig. 4 is the structural representation of B-B section in Fig. 1;
Label in accompanying drawing is respectively: 1, suction tude, and 2, air filter, 3, gas compressor, 4, motor, 5, engine exhaust pipe, 6, turbine, 7, turbine exhaust pipe, 8, baffler, 9, exhaust cycle pipe, 10, running shaft, 11, swivel plate, 12, control chamber, 13, the first moving body, the 14, first spring, the 15, second moving body, 16, the second spring, 17, adjustable lever, 18, control valve.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment, premised on technical solution of the present invention, give detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
embodiment
Embodiments of the invention as shown in Figures 1 to 4, the present invention includes suction tude 1, air filter 2, gas compressor 3, motor 4, engine exhaust pipe 5, turbine 6, turbine exhaust pipe 7, baffler 8, exhaust cycle pipe 9, running shaft 10, swivel plate 11, control chamber 12, first moving body 13, first spring 14, second moving body 15, second spring 16, adjustable lever 17, control valve 18, the suction port of motor 4 is connected with the air outlet of suction tude 1, the air inlet/outlet of engine exhaust pipe 5 respectively with the air outlet of motor 4, the suction port of turbine 6 is connected, and the suction port of turbine exhaust pipe 7 is connected with the air outlet of turbine 6, air filter 2, gas compressor 3 is connected in turn in suction tude 1, baffler 8 is connected on turbine exhaust pipe 7, one end of exhaust cycle pipe 9 is connected with turbine exhaust pipe 7 after turbine 6, the other end of exhaust cycle pipe 9 is connected with suction tude 1 after air filter 2, running shaft 10 is embedded in exhaust cycle pipe 9, swivel plate 11 is arranged in exhaust cycle pipe 9 and one end and running shaft 10 are consolidated, and exhaust cycle pipe 9 internal cavity cross section is rectangular, the first moving body 13, second moving body 15 is arranged in control chamber 12, and the internal cavity cross section of control chamber 12 is rectangular, the first moving body 13, the cross section of the second moving body 15 is rectangular, the first moving body 13, the longitudinal section of the second moving body 15 all cooperatively interacts with ramp structure, one end of adjustable lever 17 and the other end of swivel plate 11 hinged, the other end of adjustable lever 17 is through hinged with the lower wall surface of the second moving body 15 after the lower wall surface of control chamber 12, the lower wall surface of the second moving body 15 is linked together with the lower wall surface of control chamber 12 by the second spring 16, the left wall of the first moving body 13 is linked together with the left wall of control chamber 12 by the first spring 14, one end of control valve 18 is connected with its internal cavity through after the right wall of control chamber 12, the other end of control valve 18 and turbine 6, turbine exhaust pipe 7 between baffler 8 is connected.
In implementation process of the present invention, the first moving body 13 can move left and right in control chamber 11, and the second moving body 15 can move up and down in control chamber.When motor 4 load is larger, turbine exhaust pipe 7 internal pressure between turbine 6, baffler 8 is larger, first moving body 13 is moved to the left and compresses the first spring 14, under the elastic reaction of the second spring 16, the second moving body 15 moves up, thus make adjustable lever 17 pull swivel plate 11 to be rotated counterclockwise, the throat area of exhaust cycle pipe 9 becomes large, and the exhaust gas recirculation rate of motor 4 is larger; When motor 4 load is less, turbine exhaust pipe 7 internal pressure between turbine 6, baffler 8 is less, under the elastic reaction of the first spring 14, the first moving body 13 moves right, second moving body 15 moves down and compresses the second spring 16, thus make adjustable lever 17 pull swivel plate 11 to turn clockwise, the throat area of exhaust cycle pipe 9 diminishes, and the exhaust gas recirculation rate of motor 4 is less.
Claims (1)
1. a low pressure exhaust recycling device, comprise suction tude (1), air filter (2), gas compressor (3), motor (4), engine exhaust pipe (5), turbine (6), turbine exhaust pipe (7), baffler (8), the suction port of motor (4) is connected with the air outlet of suction tude (1), the air inlet/outlet of engine exhaust pipe (5) respectively with the air outlet of motor (4), the suction port of turbine (6) is connected, the suction port of turbine exhaust pipe (7) is connected with the air outlet of turbine (6), air filter (2), gas compressor (3) is connected in turn in suction tude (1), baffler (8) is connected on turbine exhaust pipe (7), it is characterized in that, also comprise exhaust cycle pipe (9), running shaft (10), swivel plate (11), control chamber (12), first moving body (13), first spring (14), second moving body (15), second spring (16), adjustable lever (17), control valve (18), one end of exhaust cycle pipe (9) and turbine (6) afterwards turbine exhaust pipe (7) are connected, the other end of exhaust cycle pipe (9) and air filter (2) afterwards suction tude (1) are connected, running shaft (10) is embedded in exhaust cycle pipe (9), swivel plate (11) is arranged in exhaust cycle pipe (9) and one end and running shaft (10) are consolidated, exhaust cycle pipe (9) internal cavity cross section is rectangular, first moving body (13), second moving body (15) is arranged in control chamber (12), the internal cavity cross section of control chamber (12) is rectangular, first moving body (13), the cross section of the second moving body (15) is rectangular, first moving body (13), the longitudinal section of the second moving body (15) all cooperatively interacts with ramp structure, one end of adjustable lever (17) and the other end of swivel plate (11) hinged, the other end of adjustable lever (17) is through hinged with the lower wall surface of the second moving body (15) after the lower wall surface of control chamber (12), the lower wall surface of the second moving body (15) is linked together by the lower wall surface of the second spring (16) with control chamber (12), the left wall of the first moving body (13) is linked together by the left wall of the first spring (14) with control chamber (12), one end of control valve (18) is connected with its internal cavity through after the right wall of control chamber (12), the other end of control valve (18) and turbine (6), turbine exhaust pipe (7) between baffler (8) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107630.3A CN104763558A (en) | 2015-03-11 | 2015-03-11 | Low-pressure exhaust recirculation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107630.3A CN104763558A (en) | 2015-03-11 | 2015-03-11 | Low-pressure exhaust recirculation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104763558A true CN104763558A (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510107630.3A Pending CN104763558A (en) | 2015-03-11 | 2015-03-11 | Low-pressure exhaust recirculation device |
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| CN (1) | CN104763558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458278A (en) * | 2018-11-02 | 2019-03-12 | 安徽江淮汽车集团股份有限公司 | The flow adjusting structure of exhaust piping in a kind of egr system |
-
2015
- 2015-03-11 CN CN201510107630.3A patent/CN104763558A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458278A (en) * | 2018-11-02 | 2019-03-12 | 安徽江淮汽车集团股份有限公司 | The flow adjusting structure of exhaust piping in a kind of egr system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150708 |