CN105090952A - High-precision combustor for fatigue testing of exhaust system - Google Patents
High-precision combustor for fatigue testing of exhaust system Download PDFInfo
- Publication number
- CN105090952A CN105090952A CN201510567477.2A CN201510567477A CN105090952A CN 105090952 A CN105090952 A CN 105090952A CN 201510567477 A CN201510567477 A CN 201510567477A CN 105090952 A CN105090952 A CN 105090952A
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- China
- Prior art keywords
- fuel injector
- oil pump
- combustion chamber
- oil
- gas extraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009661 fatigue test Methods 0.000 title abstract 5
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 239000000446 fuel Substances 0.000 claims description 42
- 238000000605 extraction Methods 0.000 claims description 17
- 239000003921 oil Substances 0.000 abstract 9
- 230000000087 stabilizing effect Effects 0.000 abstract 2
- 239000010705 motor oil Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 4
- 208000025599 Heat Stress disease Diseases 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/46—Devices on the vaporiser for controlling the feeding of the fuel
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Engines (AREA)
Abstract
A high-precision combustor for fatigue testing of an exhaust system comprises a combustion chamber, a temperature regulating air opening formed in the upper portion of the combustion chamber and a combustion supporting air opening formed in the lower portion of the combustion chamber. One or more oil atomizers are arranged in the combustion chamber, and sparking plugs are arranged on the outer sides of the oil atomizers. The oil atomizers are connected with an electromagnetic valve which is connected with an oil pump. A pressure sensor is arranged on the oil pump, the other end of the oil pump is connected with a backflow pressure stabilizing valve, and the other end of the backflow pressure stabilizing valve is connected with a damper; the oil pump is provided with an oil inlet. The high-precision combustor for fatigue testing of the exhaust system has the advantages that the engine oil atomizers replace traditional oil nozzles, flow and temperature stability and testing precision are higher, and the high-precision combustor can be used for fatigue testing of the exhaust system of an automobile engine or other fatigue testing needing high temperature.
Description
Technical field
The present invention relates to technical field of burner, particularly gas extraction system testing fatigue high accuracy burner.
Background technology
Along with country upgrades to the regulation of car emission reduction, also stricter to the requirement of automobile post processing design.Following state IV and state V regulation to be discharged etc. the PM of automobile stricter requirement, and the enforcement of regulation impels aftertreatment assembly manufacturer to improve the quality and performance of product.
So-called automobile aftertreatment assembly: comprise the whole system of exhaust, emission abatement assembly as DPF, POC, SCR etc., also comprise the muffler assembly of commercial car, passenger car, or flexible joint in gas extraction system and exhaust manifold.
In order to ensure the design parameter of aftertreatment assembly, the Special-purpose bench that traditional mode aftertreatment assembly can be placed on engine pedestal or some costlinesses runs and carries out assembly property test, cost is high, the cycle is long and may not be certain to reach ideal expection in the control of some parameters, the fluctuation etc. of the stable and temperature of such as flow.
Most important with cost control after sale to manufacturer of the fatigue properties of post processing, it is the experiment content that must consider that the heat fatigue in fatigue properties, thermal shock and heat are shaken, and is also the test event of high cost simultaneously.
All be difficult to accomplish the stable of test index based on traditional test burner, therefore the fluctuation of measuring accuracy is caused, be acceptable for the heat fatigue of traditional mechanical part, but be unacceptable to the performance test etc. of the higher occasion such as turbocharger of ask for something.
The stability of the temperature of general burner be air mass flow and the fuel set up double factor under, be the series connection of two factor precision, therefore, general burner block is difficult to accomplish higher stability.
Summary of the invention
Technical problem to be solved by this invention is to provide that a kind of stability is better, and measuring accuracy is higher, can be used in the gas extraction system testing fatigue of automobile engine or other need fatigue at high temperature test burner.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
Gas extraction system testing fatigue high accuracy burner, the temperature adjustment air port comprising combustion chamber and be arranged on above combustion chamber and the combustion-supporting air port be arranged on below combustion chamber, it is characterized in that: in described combustion chamber, be provided with one or more fuel injector, fuel injector arranged outside has spark plug, fuel injector is connected with magnetic valve, and magnetic valve is connected with oil pump, and oil pump is provided with pressure sensor, the described oil pump other end is connected with backflow pressure maintaining valve, and the backflow pressure maintaining valve other end is connected with damper; Described oil pump is provided with oil-in.
Further, described fuel injector is engine fuel injector, and adopts PMW controller to control, and PMW controller adopts system controller to carry out master control.
Further, the operating frequency of described fuel injector is 100Hz-2000Hz.
Further, the power ratio of described fuel injector is adjusted to 20:1.
Further, described spark plug is arranged on the engine.
Further, described oil pump is high direct voltage oil pump.
The advantage of gas extraction system testing fatigue high accuracy burner of the present invention is, engine fuel injector is adopted to replace traditional atomizer, flow and temperature stability and measuring accuracy higher, the gas extraction system testing fatigue or other the fatigue at high temperature that needs that can be used in automobile engine are tested.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is structural representation of the present invention.
1, temperature adjustment air port, 2, combustion chamber, 3, spark plug, 4, fuel injector, 5, magnetic valve, 6, pressure sensor, 7, oil pump, 8, oil-in, 9, backflow pressure maintaining valve, 10, damper, 11, return line, 12, system controller, 13, PWM controller, 14, combustion-supporting air port.
Detailed description of the invention
Gas extraction system testing fatigue high accuracy burner, the temperature adjustment air port 1 comprising combustion chamber 2 and be arranged on above combustion chamber 2 and the combustion-supporting air port 14 be arranged on below combustion chamber 2, it is characterized in that: in described combustion chamber 2, be provided with one or more fuel injector 4, fuel injector 4 arranged outside has spark plug 3, fuel injector 4 is connected with magnetic valve 5, magnetic valve 5 is connected with oil pump 7, oil pump 7 is provided with pressure sensor 6, described oil pump 7 other end is connected with backflow pressure maintaining valve 9, and backflow pressure maintaining valve 9 other end is connected with damper 10; Described oil pump 7 is provided with oil-in 8.
Further, described fuel injector 4 adopts engine fuel injector, and adopts PMW controller 13 to control, and PMW controller 13 adopts system controller 12 to carry out master control.
Further, the operating frequency of described fuel injector 4 is 100Hz-2000Hz.
Further, the power ratio of described fuel injector 4 is adjusted to 20:1.
Further, described spark plug 3 is arranged on the engine.
Further, described oil pump 7 is high direct voltage oil pump.
During concrete enforcement, switch due to engine fuel injector can adopt PWM (PulseWidthModulation pulsewidth modulation) to control, described PWM control module is for independently to open development, PWM can at wider frequency ranges of operation, this just means that engine fuel injector can adjust operated within range at wider ratio, also mean that fuel injector has very high " power " resolution ratio simultaneously, the precision of 0.1% can be reached in theory, the fluctuation of air mass flow and the slight fluctuations of oil pressure is considered in reality, can by precision controlling about 0.5%.
" resolution ratio " due to the fuel injector based on engine is high (relative to the control of flow, especially the control of large discharge, such as >1000kg/h), so in fact, the fluctuation of these two factors is approximated to the fluctuation in order to a factor, namely the distributive value of fuel injector fluctuates comparatively accurately along with the fluctuation of flow, improves the stability of system.
In the present invention, traditional passive type metal atomizer is become the engine fuel injector with ACTIVE CONTROL, choosing of fuel injector is chosen according to the requirement of burner flow, the fuel injector that the engine of such as 1.5L or 3L is corresponding.The control of fuel injector adopts the PWM controller module of specific aim development and Design to control, and PWM module and PLC carry out communication.The operating frequency of the PWM frequency of fuel injector is chosen as between 100Hz-2000Hz in gantry designs, and namely the power ratio of single fuel injector is adjusted to 20:1, can meet the demand of most burner block.
Engine fuel injector of the present invention is achieved in that the oil spout assembly of engine is when high oil pressure, adopts PWM module to control, realizes the speed-sensitive switch of fuel injector magnetic system, thus realize the control of distributive value.
Ignition section of burner is become the Special-purpose sparking plug of engine from traditional high voltage package coil, this is convenient to and fuel injector cooperating.
Oil pressure stable is the key factor of fuel injector power stability, in the present invention, have employed the hydraulic control method that vehicle motor adopts, oil pump adopts the high direct voltage oil pump that engine is conventional, the control of oil pressure have employed pressure sensor and backflow pressure maintaining valve PID closed-loop control, in addition, in order to eliminate the fluctuation of oil pressure, the damper with smooth-going pressure fluctuation in return line, is adopted.
Burner of the present invention can realize the high-power comparison of 20:1, meets the traffic demand of engine idle to maximum (top) speed.Probe temperature precision is the highest simultaneously can reach 0.5%, is greatly improved, meets the temperature accuracy requirement of all test components of automobile relative to the control mode (precision of 2%-5%) of conventional fuel injector.Burner of the present invention may be used for the gas extraction system test of automotive gasoline engine.Because fuel injector, oil pump are all standard products, cost is low, and easily changes, and therefore system cost and after cost all significantly reduce.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or the conversion of equivalent flow process or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
In sum, the advantage of gas extraction system testing fatigue high accuracy burner of the present invention is, engine fuel injector is adopted to replace traditional atomizer, flow and temperature stability and measuring accuracy higher, the gas extraction system testing fatigue or other the fatigue at high temperature that needs that can be used in automobile engine are tested.
Claims (6)
1. gas extraction system testing fatigue high accuracy burner, comprise combustion chamber (2) and be arranged on the temperature adjustment air port (1) of top, combustion chamber (2) and be arranged on the combustion-supporting air port (14) of below, combustion chamber (2), it is characterized in that: in described combustion chamber (2), be provided with one or more fuel injector (4), fuel injector (4) arranged outside has spark plug (3), fuel injector (4) is connected with magnetic valve (5), magnetic valve (5) is connected with oil pump (7), oil pump (7) is provided with pressure sensor (6), described oil pump (7) other end is connected with backflow pressure maintaining valve (9), backflow pressure maintaining valve (9) other end is connected with damper (10), described oil pump (7) is provided with oil-in (8).
2. gas extraction system testing fatigue high accuracy burner according to claim 1, it is characterized in that: described fuel injector (4) is for engine fuel injector and adopt PMW controller (13) to control, PMW controller (13) adopts system controller (12) to carry out master control.
3. gas extraction system testing fatigue high accuracy burner according to claim 2, is characterized in that: the operating frequency of described fuel injector (4) is 100Hz-2000Hz.
4. gas extraction system testing fatigue high accuracy burner according to claim 2, is characterized in that: the power ratio of described fuel injector (4) is adjusted to 20:1.
5. according to the gas extraction system testing fatigue high accuracy burner one of Claims 1-4 Suo Shu, it is characterized in that: described spark plug (3) is arranged on the engine.
6. gas extraction system testing fatigue high accuracy burner according to claim 1, is characterized in that: described oil pump (7) is high direct voltage oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510567477.2A CN105090952A (en) | 2015-09-08 | 2015-09-08 | High-precision combustor for fatigue testing of exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510567477.2A CN105090952A (en) | 2015-09-08 | 2015-09-08 | High-precision combustor for fatigue testing of exhaust system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105090952A true CN105090952A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510567477.2A Pending CN105090952A (en) | 2015-09-08 | 2015-09-08 | High-precision combustor for fatigue testing of exhaust system |
Country Status (1)
| Country | Link |
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| CN (1) | CN105090952A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121014A (en) * | 2019-12-20 | 2020-05-08 | 苏州环邦检测科技有限公司 | Ignition position self-adaptive exhaust aftertreatment device fatigue test combustion system |
| CN112339950A (en) * | 2019-08-09 | 2021-02-09 | 天津大学青岛海洋技术研究院 | Can be at high water pressure buoyancy governing system of glider under water of oil return |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881246A (en) * | 2010-06-02 | 2010-11-10 | 天津大学 | Measuring device and method for injector response time |
| CN102507202A (en) * | 2011-10-12 | 2012-06-20 | 湖南天雁机械有限责任公司 | Self-circulation low-cycle fatigue test device and method for turbochargers |
| CN103245511A (en) * | 2013-05-10 | 2013-08-14 | 天津大学 | Constant-volume combustion bomb system for simulating self-combustion of gas at tail end of gasoline engine |
| CN204165050U (en) * | 2014-09-28 | 2015-02-18 | 唐山金沙燃烧热能科技有限公司 | A kind of oil burner control device |
| CN104728841A (en) * | 2015-03-25 | 2015-06-24 | 上海为默机械科技有限公司 | Combustor and commercial vehicle engine postprocessing assembly test method applying same |
-
2015
- 2015-09-08 CN CN201510567477.2A patent/CN105090952A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881246A (en) * | 2010-06-02 | 2010-11-10 | 天津大学 | Measuring device and method for injector response time |
| CN102507202A (en) * | 2011-10-12 | 2012-06-20 | 湖南天雁机械有限责任公司 | Self-circulation low-cycle fatigue test device and method for turbochargers |
| CN103245511A (en) * | 2013-05-10 | 2013-08-14 | 天津大学 | Constant-volume combustion bomb system for simulating self-combustion of gas at tail end of gasoline engine |
| CN204165050U (en) * | 2014-09-28 | 2015-02-18 | 唐山金沙燃烧热能科技有限公司 | A kind of oil burner control device |
| CN104728841A (en) * | 2015-03-25 | 2015-06-24 | 上海为默机械科技有限公司 | Combustor and commercial vehicle engine postprocessing assembly test method applying same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112339950A (en) * | 2019-08-09 | 2021-02-09 | 天津大学青岛海洋技术研究院 | Can be at high water pressure buoyancy governing system of glider under water of oil return |
| CN111121014A (en) * | 2019-12-20 | 2020-05-08 | 苏州环邦检测科技有限公司 | Ignition position self-adaptive exhaust aftertreatment device fatigue test combustion system |
| CN111121014B (en) * | 2019-12-20 | 2025-05-27 | 苏州环邦检测科技有限公司 | Exhaust after-processor fatigue test combustion system with adaptive ignition position |
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Application publication date: 20151125 |
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| RJ01 | Rejection of invention patent application after publication |