CN103808455A - Method for correcting parameters of test bench and assistant fixture - Google Patents
Method for correcting parameters of test bench and assistant fixture Download PDFInfo
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- CN103808455A CN103808455A CN201410076321.XA CN201410076321A CN103808455A CN 103808455 A CN103808455 A CN 103808455A CN 201410076321 A CN201410076321 A CN 201410076321A CN 103808455 A CN103808455 A CN 103808455A
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- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005259 measurement Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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Abstract
The invention discloses a method for correcting parameters of a test bench and an assistant fixture. The method for correcting the parameters of the test bench includes: step 1, providing an engine and serving as a benchmark, firmly mounting a torque sensor on the edge of a flywheel housing of the engine, wherein the torque sensor is used for measuring dynamic torque values of the engine; step 2, connecting the engine provided with the torque sensor in the step 1 with the test bench to be corrected, enabling the test bench to measure output torque of the engine and displaying the first group of data, and enabling the torque sensor to measure the output torque of the engine and displaying the second group of data; step 3, comparing the first group of data of the step 2 with the second group of data to correct the test bench. The method for correcting the parameters of the test bench dynamically measures the engine performances online and correct the test bench according to the measured data, and accordingly the dynamic torque data of the engine measured by the test bench is more precise, and the data value transmission is more scientific.
Description
Technical field
The present invention relates to engine rig test field, particularly a kind of method and auxiliary mould of calibration testing stand parameter.
Background technology
In engine thermal test break-in standardising process, use heat examination stand to measure the dynamic parameters of engine, check engine performance whether to reach dispatch from the factory technical requirement and standard, output torque, the power of hydraulic dynamometer to engine is installed on testboard bay and measures.The principle of work of dynamometer machine: engine drives the rotor assembly synchronous rotary on dynamometer main shaft by shaft coupling, stir the water of working chamber, due to the effect of centrifugal force that rotor produces and rotor pit, water produces strong water turbulence between side shell and rotor pit, shell is applied to rotating torque, make the torque of engine pass to shell by rotor, the power arm being contained on case body will be along with rotation, thereby braking moment is passed to the pull pressure sensor being connected with brake arm, shown the size of its braking moment by electronic digital display apparatus.The rotating speed of dynamometer machine can be recorded by speed probe simultaneously, on electronical display instrument, shows.
Above-mentioned heat examination stand needs dynamometer machine to calibrate before use, at present, according to " Chinese people's republicanism is national metrological verification regulations JJG653-2003 power measurement arrangement altogether ", heat examination stand dynamometer machine is carried out to on-the-spot static calibration, its method is to adopt the arm of force, suspension hook, pallet and counterweight to calibrate, the change in displacement of the calibration arm of force, geometric sense size and the impact of site environment factor.This static calibration is unstable or error is large, just the stability of dynamometer machine has been done to preliminary evaluation, is sometimes difficult to judge that moment of torsion slippages is how many, and whether measured value is accurate, causes the dynamic torque of engine, power measurements not accurate enough, reliable.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, a kind of method and auxiliary mould of calibration testing stand parameter are provided, the online dynamic data of the engine of measuring according to this auxiliary mould is calibrated testboard bay, make testboard bay more accurate to the dynamic torque measurement data of engine, data transmission of quantity value is more scientific.
For achieving the above object, a kind of method that the invention provides calibration testing stand parameter, comprises the steps: step 1, provides an engine as benchmark, on the edge of its bell housing, fixedly mount torque sensor, this torque sensor is used for measuring the dynamic torque value of engine; Step 2, the engine that torque sensor is installed in step 1 is connected with testboard bay to be calibrated, testboard bay is measured the output torque of this engine and is carried out first group of data and shows, torque sensor is measured the output torque of this engine and carried out second group of data and shows; And step 3, by first group of data and second group of data in step 2 are carried out recently testboard bay being calibrated.
In technique scheme, torque sensor is measured the rotating speed of engine simultaneously.
The present invention also provides a kind of auxiliary mould of calibration testing stand parameter, this testboard bay can be gone forward side by side line number according to the show to the output torque measurement of engine, it is characterized in that, auxiliary mould comprises: torque sensor, and it is fixedly mounted on the dynamic torque value that is used for measuring this engine on the edge of bell housing of engine; Data display equipment, it is connected the measured value for showing torque sensor with torque sensor, and measured value is used for carrying out recently testboard bay being calibrated with the demonstration data of testboard bay.
In technique scheme, torque sensor has mounting flange, and mounting flange is fixed by the edge of bolt and bell housing.
Compared with prior art, the present invention has following beneficial effect: by adopting high-precision torque sensor to be arranged on the bell housing of engine, can carry out on-line dynamic measurement to the parameter such as moment of torsion, power of engine, carry out Correcting Test Stand frame recently according to the hydraulic dynamometer data displayed value on the measured value of this torque sensor and testboard bay, measured value is more accurate, has improved the authenticity of measured value.
Accompanying drawing explanation
Fig. 1 is that the torque sensor in the present invention is arranged on the front view on bell housing;
Fig. 2 is that the torque sensor in the present invention is arranged on the left view on bell housing;
Fig. 3 is that the torque sensor in the present invention is arranged on the vertical view on bell housing.
Mark the following drawings mark thereon by reference to the accompanying drawings:
1-bell housing, 2-torque sensor.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.
The method of calibration testing stand parameter of the present invention and auxiliary mould pass through the parameter such as moment of torsion, power of on-line dynamic measurement engine as reference data, can check the testboard bay of engine whether qualified, the parameter of testboard bay is calibrated simultaneously, guarantee that the data in engine kinetic measurement process are more accurate, more reliable, improve the authenticity of measured value.
The method of the calibration testing stand parameter that the present embodiment provides comprises the steps:
Step 3, by carrying out first group of data and second group of data in step 2 to recently testboard bay being calibrated.
As shown in Figure 1 to Figure 3, the auxiliary mould of using in the present embodiment comprises torque sensor 2 and data display equipment (not shown), torque sensor 2 is fixedly mounted on the edge of the bell housing 1 of engine to be measured, and torque sensor 2 is used for measuring the dynamic torque value of engine.Data display equipment is connected the measured value for showing torque sensor with torque sensor, data display equipment is specifically connected with the binding post 22 that is located at torque sensor 2 by data line, torque sensor 2 has mounting flange (unmarked in figure), mounting flange is fixed by bolt 21 and the edge of bell housing 1, and torque sensor 2 can be measured dynamic torque value, the tachometer value of engine and show by data display equipment.Wherein, torque sensor 2 is high-precision sensor, can select the T10F flange form torque sensor (precision 0.1%) of German HBM, and the installation method of torque sensor 2 and position, because type changes, make more accurate stable of measurement effect.
In the time of concrete calibration, this torque sensor is arranged on the flywheel shell of engine of stable performance, the engine of this stable performance is measured as engine, the moment of torsion of measurement, magnitude of power data as a comparison.This engine that torque sensor is installed is connected with the hydraulic dynamometer on testboard bay, according to engine calibration point, power points is set engine speed, moment of torsion, the display device of testboard bay can be to the moment of torsion of hydraulic dynamometer, power measurement values shows, by the moment of torsion of this testboard bay, the moment of torsion displayed value of power displayed value and torque sensor contrasts, according to the difference of above-mentioned numerical value, the hydraulic dynamometer of testboard bay is adjusted, and then reach the measurement parameter of calibration testing stand, make the dynamic torque of testboard bay to engine after calibration, the parameters such as power are measured accurately, improve the authenticity of measured value.
Be below the measurement result of concrete certain # testboard bay of calibration:
Find out from upper table, the hydraulic dynamometer of testboard bay and torque sensor do not have difference to the tachometric survey of engine.The measurement of the output torque to engine, the measured value of hydraulic dynamometer is less than normal, according to data in table, hydraulic dynamometer is adjusted, make its measured value be tending towards the measured value of torque sensor, guarantee that error is not more than 1%, and then by the testboard bay after calibration when engine is measured, data are more accurate, more reliable, improve the authenticity of measured value.
Disclosed is above only specific embodiments of the invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (4)
1. a method for calibration testing stand parameter, is characterized in that, comprises the steps:
Step 1, provides an engine as benchmark, on the edge of its bell housing, fixedly mounts torque sensor, and this torque sensor is used for measuring the dynamic torque value of described engine;
Step 2, the engine that torque sensor is installed in step 1 is connected with testboard bay to be calibrated, described testboard bay is measured the output torque of this engine and is carried out first group of data and shows, described torque sensor is measured the output torque of this engine and carried out second group of data and shows; And
Step 3, by carrying out first group of data and second group of data in step 2 to recently testboard bay being calibrated.
2. the method for calibration testing stand parameter according to claim 1, is characterized in that, described torque sensor is measured the rotating speed of engine simultaneously.
3. an auxiliary mould for calibration testing stand parameter, this testboard bay can be gone forward side by side line number according to the show to the output torque measurement of engine, it is characterized in that, and described auxiliary mould comprises:
Torque sensor, it is fixedly mounted on the dynamic torque value that is used for measuring this engine on the edge of bell housing of engine;
Data display equipment, it is connected the measured value for showing described torque sensor with described torque sensor, and described measured value is used for carrying out recently described testboard bay being calibrated with the demonstration data of described testboard bay.
4. the auxiliary mould of calibration testing stand parameter according to claim 3, is characterized in that, described torque sensor has mounting flange, and described mounting flange is fixed by the edge of bolt and described bell housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410076321.XA CN103808455A (en) | 2014-03-04 | 2014-03-04 | Method for correcting parameters of test bench and assistant fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410076321.XA CN103808455A (en) | 2014-03-04 | 2014-03-04 | Method for correcting parameters of test bench and assistant fixture |
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| CN103808455A true CN103808455A (en) | 2014-05-21 |
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| CN201410076321.XA Pending CN103808455A (en) | 2014-03-04 | 2014-03-04 | Method for correcting parameters of test bench and assistant fixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687950A (en) * | 2017-09-30 | 2018-02-13 | 广西玉柴机器股份有限公司 | A kind of convenient detection method and device of load sensor dynamic property |
| CN112880889A (en) * | 2021-03-18 | 2021-06-01 | 株洲六零八所科技有限公司 | Torque measuring device and hydraulic power measuring system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6601441B1 (en) * | 2000-08-31 | 2003-08-05 | Garrett D. Torgerson | Device and method for verifying the operation of a chassis dynamometer |
| US20110011169A1 (en) * | 2009-07-20 | 2011-01-20 | Wolfgang Schrotter | Test stand for an internal combustion engine |
| CN102346085A (en) * | 2010-06-21 | 2012-02-08 | 株式会社堀场制作所 | Automatic torque calibration device |
| CN102937527A (en) * | 2012-10-19 | 2013-02-20 | 奇瑞汽车股份有限公司 | Calibrator used for detecting measurement accuracy of fuel consumption of engine pedestal |
| CN203705120U (en) * | 2014-03-04 | 2014-07-09 | 广西玉柴机器股份有限公司 | Auxiliary tool for calibrating parameter of test bench |
-
2014
- 2014-03-04 CN CN201410076321.XA patent/CN103808455A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6601441B1 (en) * | 2000-08-31 | 2003-08-05 | Garrett D. Torgerson | Device and method for verifying the operation of a chassis dynamometer |
| US20110011169A1 (en) * | 2009-07-20 | 2011-01-20 | Wolfgang Schrotter | Test stand for an internal combustion engine |
| CN102346085A (en) * | 2010-06-21 | 2012-02-08 | 株式会社堀场制作所 | Automatic torque calibration device |
| CN102937527A (en) * | 2012-10-19 | 2013-02-20 | 奇瑞汽车股份有限公司 | Calibrator used for detecting measurement accuracy of fuel consumption of engine pedestal |
| CN203705120U (en) * | 2014-03-04 | 2014-07-09 | 广西玉柴机器股份有限公司 | Auxiliary tool for calibrating parameter of test bench |
Non-Patent Citations (1)
| Title |
|---|
| 陈国局: "扭矩传感器在动态校验中的应用", 《数控技术市场》, no. 10, 31 December 2010 (2010-12-31) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687950A (en) * | 2017-09-30 | 2018-02-13 | 广西玉柴机器股份有限公司 | A kind of convenient detection method and device of load sensor dynamic property |
| CN112880889A (en) * | 2021-03-18 | 2021-06-01 | 株洲六零八所科技有限公司 | Torque measuring device and hydraulic power measuring system |
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Application publication date: 20140521 |