CN113250809A - WGT supercharger bypass valve actuator - Google Patents
WGT supercharger bypass valve actuator Download PDFInfo
- Publication number
- CN113250809A CN113250809A CN202110507968.3A CN202110507968A CN113250809A CN 113250809 A CN113250809 A CN 113250809A CN 202110507968 A CN202110507968 A CN 202110507968A CN 113250809 A CN113250809 A CN 113250809A
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- China
- Prior art keywords
- pressure cavity
- bypass valve
- wgt
- valve actuator
- sealing
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- Pending
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- 238000007789 sealing Methods 0.000 claims abstract description 48
- 238000012856 packing Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000004088 simulation Methods 0.000 abstract description 5
- 238000011056 performance test Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000005094 computer simulation Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BUCXEFZXWKUCCY-UHFFFAOYSA-N 4-methyl-3-(2-phenylethyl)-1,2,4-oxadiazol-5-one Chemical compound O1C(=O)N(C)C(CCC=2C=CC=CC=2)=N1 BUCXEFZXWKUCCY-UHFFFAOYSA-N 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002229 photoelectron microspectroscopy Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
- G01M15/106—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases using pressure sensors
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Engines (AREA)
Abstract
The invention relates to a WGT supercharger bypass valve actuator, belonging to the technical field of engine performance test, and comprising a supercharging pressure cavity provided with a supercharging pressure cavity air inlet nozzle and an environment pressure cavity provided with an environment pressure cavity air inlet nozzle; the pressurizing pressure cavity and the environment pressure cavity are respectively independent spaces, the pressurizing pressure cavity and the environment pressure cavity are separated by a gas film, a sealing element is arranged in the environment pressure cavity, and the sealing element comprises a concave pressing plate, a sealing seat, a sealing gasket, a guide element and a bolt; the sealing seat is arranged in the concave cavity of the concave pressure plate, and an O-shaped sealing ring is arranged in the sealing seat; the guide piece and the bolt fixed by the bolt base are sequentially arranged concentrically with the push rod between the sealing gasket and the left shell by taking the push rod as a center; the invention realizes the simulation test of the performance and the emission parameters of the engine at different altitudes based on the conventional engine test bench.
Description
Technical Field
The invention belongs to the technical field of engine performance testing, and particularly relates to a WGT supercharger bypass valve actuator.
Background
And the national emission is upgraded, various emission indexes are tightened, and the altitude below 2400 m is required to meet related emission regulations. The difficulty in emissions for diesel engines is Nox (nitrogen oxide). Therefore, the technical route of the six countries of the diesel engine mostly adopts EGR (exhaust gas recirculation) + SCR (selective catalytic reduction) technology to reduce the emission of NOx.
The ambient pressure chamber pressure of the existing supercharger bypass valve actuator cannot be changed and is equal to the current ambient pressure. For the existing test bench with the engine air inlet and exhaust dynamic simulation air conditioner, when the engine is in a static state, the pressure of an air inlet system and an air exhaust system of the engine is increased or reduced, so that the left side and the right side of an air model of a supercharger bypass valve actuator are unbalanced in pressure, and the initial pretightening force of a spring is changed. Under the working state of the engine, because the initial pretightening force of the spring is changed, the deformation difference of the spring is different under the condition of the same supercharging pressure, and the simulation push rod displacement is inaccurate. The traditional push rod adjusting method cannot accurately compensate for the push rod displacement caused by the environmental pressure difference (the test environmental pressure and the pressure of an air conditioner for air intake of an engine) and the difference of the opening amount of a bypass valve caused by the displacement; boost pressure differential of the supercharger; the performance and emission parameters of the engine at various altitudes cannot be accurately simulated due to the difference of EGR rate, nitrogen oxide and particle emission.
The performance and emission parameters of the engine at each altitude cannot be accurately simulated on an engine test board (provided with an engine air inlet and exhaust air conditioning simulation system), so that the test cycle of the calibration of the three highs and the PEMS of the whole vehicle is long, and the performance and emission data of the engine at each altitude are difficult to obtain. And the construction cost and the use cost of the engine and the finished automobile test environment bin are high, and the popularization is difficult in practical application.
Disclosure of Invention
In order to overcome the problems in the background art, the invention provides a WGT supercharger bypass valve actuator, which utilizes a test bench with an engine intake and exhaust dynamic simulation air conditioner to solve the performance and emission test technology of an engine with a waste gas bypass supercharger in simulation at different altitudes, shortens the product development period and saves project development cost.
The terms of left and right directions and the like used in the present invention are a description means used for convenience in describing the structure of the present invention in conjunction with the drawings of the specification, and the present invention is not limited by the terms of the directions when in actual use.
In order to realize the purpose, the invention is realized by the following technical scheme:
the WGT supercharger bypass valve actuator comprises a supercharging pressure cavity provided with a supercharging pressure cavity air inlet nozzle and an environment pressure cavity provided with an environment pressure cavity air inlet nozzle; the pressurizing pressure cavity and the environment pressure cavity are respectively independent spaces and are separated by a diaphragm.
Further, the pressurizing pressure cavity is enclosed by the right side shell and the air film; the environment pressure cavity is enclosed by the left shell and the air film.
Furthermore, a sealing element is arranged in the left side shell, and the sealing element and the air film enclose an environment pressure cavity.
Furthermore, the WGT supercharger bypass valve actuator also comprises a return spring arranged in an environment pressure cavity; the air film left side is equipped with the U-shaped piston, reset spring fixes between sealing member and U-shaped piston.
Further, the sealing element comprises a concave pressing plate, a sealing seat, a sealing pad, a guide element and a bolt; the sealing seat is arranged in the concave cavity of the concave pressing plate, and an O-shaped sealing ring is arranged in the sealing seat; the guide piece and the bolt fixed by the bolt base are sequentially arranged concentrically with the push rod between the sealing gasket and the left shell by taking the push rod as a center.
Further, the inner diameter of the guide piece is smaller than that of the sealing seat.
Furthermore, the return spring is fixed between the concave pressure plate and the U-shaped piston.
Further, the air film is clamped by the left side shell and the right side shell.
The invention has the beneficial effects that:
the invention can realize the simulation test of the performance and the emission parameters of the engine under different altitudes on the basis of the existing engine test bench with the engine intake and exhaust dynamic simulation closed air conditioner, by connecting the air inlet nozzle of the environment pressure cavity with the engine intake air conditioner and setting the pressure of the engine intake and exhaust air conditioner according to the atmospheric pressure of each altitude, so that the pressure of the environment pressure cavity is equal to the atmospheric pressure of the corresponding altitude.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure, 1-a pressurizing pressure cavity air inlet nozzle, 2-a pressurizing pressure cavity, 3-an environment pressure cavity air inlet nozzle, 4-an environment pressure cavity, 5-an air film, 6-a right side shell, 7-a left side shell, 8-a return spring, 9-a U-shaped piston, 10-a concave pressure plate, 11-a sealing seat, 12-a sealing pad, 13-a guide piece, 14-a bolt, 15-an O-shaped sealing ring, 16-a push rod and 17-a bolt base.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, preferred embodiments of the present invention will be described in detail below to facilitate understanding of the skilled person.
The WGT supercharger bypass valve actuator comprises a pressurization pressure cavity 2 provided with a pressurization pressure cavity air inlet nozzle 1, an environment pressure cavity 4 provided with an environment pressure cavity air inlet nozzle 3 and a return spring 8. The pressurizing pressure cavity 2 and the environment pressure cavity 4 are respectively independent spaces, and are separated by a gas film 5. The left side of the air film 5 is provided with a U-shaped piston 9.
The pressurizing pressure cavity 2 and the environment pressure cavity 4 are wrapped by the right side shell 6 and the left side shell 7, and the air film 5 is clamped at the joint of the left side shell 7 and the right side shell 6.
The pressurizing chamber 2 is enclosed by a right housing 6 and a gas film 5. And a sealing element is arranged in the left shell 7, and the sealing element and the air film 5 enclose an environment pressure cavity 4.
The seal comprises a female pressure plate 10, a seal holder 11, a seal 12, a guide 13 and a bolt 14. The sealing seat 11 is arranged in the concave cavity of the concave pressure plate 10, and an O-shaped sealing ring 15 is arranged in the sealing seat 11. Between the packing 12 and the left housing 7, a guide 13 and a bolt 14 fixed by a bolt base 17 are arranged concentrically with the push rod 16 in this order with the push rod 16 as a center. The guide 13 has an inner diameter smaller than that of the seal holder 11. The sealing gasket 12, the concave pressure plate 10 and the bolt base 17 are combined by the O-shaped sealing ring 15 and the sealing seat 11 to ensure the tightness of the environmental pressure cavity 4. The guide member 13 is coaxial with the push rod 16 and guides the push rod 16. The inner diameter of the guide piece 13 is smaller than that of the sealing seat 11, so that the sealing seat 11 and the O-shaped sealing ring 15 can be protected from being abraded by the push rod 16, and the sealing performance of the environment pressure cavity 4 is ensured. A bolt 10 is arranged in a counter bore of a bolt base 17, and the bolt 10 is connected with a bypass valve actuator support of the supercharger to determine the relative position of a bypass valve actuator.
A return spring 8 is secured between the female pressure plate 10 and the U-shaped piston 9. The concave pressure plate 10 is a stamping part, and the convex outer contour of the concave pressure plate is used for limiting the return spring 8. The free length of the reset spring is larger than the length of a cavity surrounded by the right side shell 6 and the left side shell 7, and under the static state, the pressure of the environment pressure cavity 4 is equal to that of the pressurization pressure cavity 2, and the environment pressure cavity is in a balanced state. The pre-tightening force of the return spring 8 is utilized to ensure that the U-shaped piston 9 and the air mold 5 are tightly attached to the inner side of the right side shell 6, and the concave pressing plate 10 tightly presses the sealing gasket 12. Under the normal operating condition, the pressure of the pressurization pressure cavity 2 is greater than the pressure of the environment pressure cavity 4, the U-shaped piston 9 moves leftwards, and the concave pressure plate 10 always presses the sealing gasket 12 and the left shell 7.
The working process of the invention is as follows:
the engine is arranged on a test bench of an air inlet and exhaust dynamic simulation air conditioner, an environment pressure cavity 4 is connected with the air inlet air conditioner of the engine through an air inlet nozzle 3, and a pressurizing pressure cavity 2 is connected with an air compressor outlet of a supercharger through an air inlet nozzle 1. And starting the air inlet and exhaust dynamic simulation air conditioner of the engine, and setting the pressure of the air inlet and exhaust air conditioner of the engine according to development requirements. The environment pressure cavity 4 is under the sealing condition, and the pressure in the cavity is equal to the set pressure of the air inlet air conditioner. When the engine is in a static state, the pressure of the compressor end of the supercharger is equal to the set pressure of the air inlet conditioner, so that the supercharging pressure cavity 2 is also equal to the set pressure of the air inlet conditioner. The environment pressure cavity 4 and the pressurization pressure cavity 2 are set pressure of the air inlet air conditioner, and the pressure at two ends of the air film 5 is consistent. The pressure at two ends of the air film 5 is balanced, so that the influence of the deviation of the push rod displacement caused by the environmental pressure difference (the test environmental pressure and the pressure difference between the air inlet and the air outlet of the engine) is eliminated.
Under the condition that the pressures at the two ends of the air film 5 are balanced, the low-altitude working environment can be simulated by arranging the air conditioner for pressurization, namely the pressure of the air conditioner for air intake of the engine is greater than the ambient pressure. The engine runs under the pressurization environment, the pressurization pressure is increased, the pressure of the pressurization pressure cavity 2 is increased, the return spring 8 is compressed, the push rod is displaced, and the bypass valve is gradually opened. The ambient pressure chamber 4 is now at a positive pressure, which is a reverse compensation for the ram displacement. The high-altitude working environment is simulated by setting negative pressure, namely the pressure of an air conditioner for air intake of an engine is smaller than the ambient pressure. The engine runs under the pressurization environment, the pressurization pressure is increased, the pressure of the pressurization pressure cavity 2 is increased, the return spring 8 is compressed, the push rod is displaced, and the bypass valve is gradually opened. The ambient pressure chamber 4 is now under negative pressure, which compensates for the ram displacement in the positive direction.
The pressure of the environment pressure cavity 4 is controllable by sealing the environment pressure cavity 4 of the supercharger bypass valve actuator and connecting the air inlet nozzle 3 with the engine air inlet and exhaust dynamic simulation air conditioner. The engine performance and the emission parameters under different altitudes are simulated and tested on the basis of the conventional engine test bench, so that the emission under each altitude can meet the relevant emission regulations.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (8)
1. A WGT supercharger bypass valve actuator, characterized by: the WGT supercharger bypass valve actuator comprises a supercharging pressure cavity (2) provided with a supercharging pressure cavity air inlet nozzle (1) and an environment pressure cavity (4) provided with an environment pressure cavity air inlet nozzle (3); the pressurizing pressure cavity (2) and the environment pressure cavity (4) are respectively independent spaces, and are separated by an air film (5).
2. A WGT supercharger bypass valve actuator according to claim 1, wherein: the pressurizing pressure cavity (2) is enclosed by a right side shell (6) and an air film (5); the environment pressure cavity (4) is enclosed by a left side shell (7) and an air film (5).
3. A WGT supercharger bypass valve actuator according to claim 2, wherein: and a sealing element is arranged in the left shell (7), and the sealing element and the air film (5) enclose an environment pressure cavity (4).
4. A WGT supercharger bypass valve actuator according to claim 3, wherein: the WGT supercharger bypass valve actuator also comprises a return spring (8) arranged in the environment pressure cavity (4); the air film (5) is provided with a U-shaped piston (9) on the left side, and the return spring (8) is fixed between the sealing element and the U-shaped piston (9).
5. A WGT supercharger bypass valve actuator as claimed in claim 3 or 4, wherein: the sealing element comprises a concave pressing plate (10), a sealing seat (11), a sealing gasket (12), a guide element (13) and a bolt (14); the sealing seat (11) is arranged in the cavity of the concave pressure plate (10), and an O-shaped sealing ring (15) is arranged in the sealing seat (11); a guide member 13 and a bolt 14 fixed by a bolt base 17 are arranged concentrically with a push rod 16 in this order between a packing 12 and a left side case 7 with the push rod 16 as a center.
6. The WGT supercharger bypass valve actuator of claim 5, wherein: the inner diameter of the guide piece (13) is smaller than that of the sealing seat (11).
7. The WGT supercharger bypass valve actuator of claim 5, wherein: the return spring (8) is fixed between the concave pressure plate (10) and the U-shaped piston (9).
8. A WGT supercharger bypass valve actuator according to claim 1 or 2, wherein: the air film (5) is clamped and fixed by the left side shell (7) and the right side shell (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507968.3A CN113250809A (en) | 2021-05-11 | 2021-05-11 | WGT supercharger bypass valve actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507968.3A CN113250809A (en) | 2021-05-11 | 2021-05-11 | WGT supercharger bypass valve actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113250809A true CN113250809A (en) | 2021-08-13 |
Family
ID=77222817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110507968.3A Pending CN113250809A (en) | 2021-05-11 | 2021-05-11 | WGT supercharger bypass valve actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113250809A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101210A (en) * | 1981-06-15 | 1983-01-12 | Fuji Heavy Ind Ltd | Altitude compensation of i c engine supercharging |
| US20040255580A1 (en) * | 2000-08-21 | 2004-12-23 | Johann Bayerl | Pop-off valve for an aircraft engine having a turbocharger control system and propeller control system by stepper motor |
| CN101086221A (en) * | 2000-11-22 | 2007-12-12 | Avl里斯脱有限公司 | Method for supplying an internal combustion engine with conditioned combustion gas, device for carrying out said method |
| CN101749104A (en) * | 2009-12-10 | 2010-06-23 | 湖南天雁机械有限责任公司 | By-pass valve actuator of turbocharger |
| CN203717114U (en) * | 2014-01-23 | 2014-07-16 | 中国第一汽车股份有限公司 | Waste gas bypass type pressurizer high-precision control system |
| CN104234821A (en) * | 2014-09-18 | 2014-12-24 | 北京航空航天大学 | Aviation supercharger control system and adjusting method thereof |
| CN204082315U (en) * | 2014-08-22 | 2015-01-07 | 湖南天雁机械有限责任公司 | The turbocharger actuator of anti-throw-out lever deflection and rotation |
| CN206299457U (en) * | 2016-12-13 | 2017-07-04 | 湖南天雁机械有限责任公司 | A kind of bypass air-release mechanism of turbocharger |
| CN108087106A (en) * | 2017-12-26 | 2018-05-29 | 车行天下网络科技股份有限公司 | Intelligent data correcting device in by-pass valve actuator of turbocharger |
| CN209025748U (en) * | 2018-11-12 | 2019-06-25 | 北京金迪创业科技有限公司 | It is a kind of to clamp stable by-pass valve actuator |
| CN209025711U (en) * | 2018-11-12 | 2019-06-25 | 北京金迪创业科技有限公司 | A kind of by-pass valve actuator that technique guarantee property is strong |
| CN112648067A (en) * | 2020-12-18 | 2021-04-13 | 潍柴动力股份有限公司 | Environmental chamber and turbocharger actuator control system, method and storage medium thereof |
-
2021
- 2021-05-11 CN CN202110507968.3A patent/CN113250809A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101210A (en) * | 1981-06-15 | 1983-01-12 | Fuji Heavy Ind Ltd | Altitude compensation of i c engine supercharging |
| US20040255580A1 (en) * | 2000-08-21 | 2004-12-23 | Johann Bayerl | Pop-off valve for an aircraft engine having a turbocharger control system and propeller control system by stepper motor |
| CN101086221A (en) * | 2000-11-22 | 2007-12-12 | Avl里斯脱有限公司 | Method for supplying an internal combustion engine with conditioned combustion gas, device for carrying out said method |
| CN101749104A (en) * | 2009-12-10 | 2010-06-23 | 湖南天雁机械有限责任公司 | By-pass valve actuator of turbocharger |
| CN203717114U (en) * | 2014-01-23 | 2014-07-16 | 中国第一汽车股份有限公司 | Waste gas bypass type pressurizer high-precision control system |
| CN204082315U (en) * | 2014-08-22 | 2015-01-07 | 湖南天雁机械有限责任公司 | The turbocharger actuator of anti-throw-out lever deflection and rotation |
| CN104234821A (en) * | 2014-09-18 | 2014-12-24 | 北京航空航天大学 | Aviation supercharger control system and adjusting method thereof |
| CN206299457U (en) * | 2016-12-13 | 2017-07-04 | 湖南天雁机械有限责任公司 | A kind of bypass air-release mechanism of turbocharger |
| CN108087106A (en) * | 2017-12-26 | 2018-05-29 | 车行天下网络科技股份有限公司 | Intelligent data correcting device in by-pass valve actuator of turbocharger |
| CN209025748U (en) * | 2018-11-12 | 2019-06-25 | 北京金迪创业科技有限公司 | It is a kind of to clamp stable by-pass valve actuator |
| CN209025711U (en) * | 2018-11-12 | 2019-06-25 | 北京金迪创业科技有限公司 | A kind of by-pass valve actuator that technique guarantee property is strong |
| CN112648067A (en) * | 2020-12-18 | 2021-04-13 | 潍柴动力股份有限公司 | Environmental chamber and turbocharger actuator control system, method and storage medium thereof |
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| PB01 | Publication | ||
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Application publication date: 20210813 |