CN105181352A - Device for testing pressure relief noise of air inlet pressure relief valve of turbocharger - Google Patents
Device for testing pressure relief noise of air inlet pressure relief valve of turbocharger Download PDFInfo
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- CN105181352A CN105181352A CN201510616772.2A CN201510616772A CN105181352A CN 105181352 A CN105181352 A CN 105181352A CN 201510616772 A CN201510616772 A CN 201510616772A CN 105181352 A CN105181352 A CN 105181352A
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Abstract
The present invention discloses a device for testing pressure relief noise of an air inlet pressure relief valve of a turbocharger. The device for testing pressure relief noise of the air inlet pressure relief valve of the turbocharger is characterized in that: the output end of a vehicle OBD detection port is connected with the input end of a throttle opening degree tester, and the output end of the throttle opening degree tester is connected with the input end of a data acquisition unit; the output end of a microphone, fixedly arranged on the place away from the air inlet pressure relief value with 100-200 mm in the horizontal direction, is connected with the input end of the data acquisition unit, and the output end of a photoelectric sensor is connected with the input end of the data acquisition unit, wherein, the photoelectric sensor is fixed on a fixture on the outer side of a crankshaft pulley for acquiring engine speed signals; the output end of the data acquisition unit is connected with the input end of a computer. The device can accelerate under the working conditions with any fixation throttle opening degree, and throttle down the engine under any engine speed so as to collect required pressure relief noise of the pressure relief valve. The device can directly and rapidly acquire the roughness and sharpness of the pressure relief noise of the air inlet pressure relief valve, and the testing result can comprehensively analyze the quality level of the pressure relief noise of the air inlet pressure relief valve.
Description
Technical field
The present invention relates to motor vehicle vehicle performance technical field of measurement and test, specifically a kind of psychologic acoustics roughness to the air inlet blowdown valve pressure release sound with turbosupercharger automobile and sharpness parameter make the turbosupercharger air inlet blowdown valve pressure release noise-measuring system of test.
Background technology
Automobile sound quality is meeting under human and environment requirement, is the product sound seeking to meet automobile characteristic, is the important component part of auto NVH research.The height of automobile noise level and the quality of sound quality, directly affect the impression of people to automobile.Therefore, the vehicle of the sound quality designed more and more is subject to the attention of automobile engineer, has been an important content of domestic and international well-known vehicle design at present.With the vehicle of exhaust-driven turbo-charger exhaust-gas turbo charger, air inlet pressure release valve device can be installed, when the vehicle accelerates, air throttle is opened, after receiving throttle, and closed throttle, gases at high pressure now after charger boost need through air inlet blowdown valve leak or pressure release in the low-pressure admission pipeline of supercharger front end, air inlet pressure relief valve is opened, and the noise that the gases at high pressure after charger boost produce when blowdown valve pressure release exists the problem of sound quality, and serious have impact on the evaluation of client to vehicle.Air inlet blowdown valve pressure release noise can bring bored sensation to client, as irritated, uncomfortable etc.Therefore study vehicle turbine super charge blowdown valve pressure release sound quality and there is positive effect; At present, the relevant report not about the proving installation of the air inlet blowdown valve pressure release sound quality for automobile industry on market.
Summary of the invention
When the object of this invention is to provide one with turbosupercharger the Accelerating Traveling of Automobiles receipts oil, the psychologic acoustics roughness of blowdown valve pressure release sound and the turbosupercharger air inlet blowdown valve pressure release noise-measuring system of sharpness parameter.
Specific embodiment of the invention scheme is: a kind of turbosupercharger air inlet blowdown valve pressure release noise-measuring system, it includes vehicle OBD and detects mouth, it is characterized in that: vehicle OBD detects mouth output terminal and is connected with the input end of throttle opening tester, and throttle opening tester output terminal is connected with the input end of data acquisition unit; The microphone out put terminals being fixedly installed on distance vehicle intake blowdown valve horizontal direction 100-200mm is connected with the input end of data acquisition unit, and the input end being fixed on the photosensor output and data acquisition unit that the fixture outside crank pulley gathers engine rotational speed signal is connected; Data acquisition unit output terminal is connected with computer input end.
Principal feature of the present invention refers to that throttle opening tester and vehicle OBD detect mouth output terminal and be connected and monitor throttle opening, and photoelectric sensor is fixed on monitor engine speed outside crank pulley.By stepping on the throttle, pedal regulates gas pedal pad device, and monitoring throttle opening, to the aperture needing test, fixes gas pedal pad device; Step on the throttle pedal with fix gas pedal pad device and fit, accelerate under this throttle opening, receive throttle when engine speed reaches the engine speed needing test, repeatedly, by data collector to sensor record data, after record test figure, complete test.
Feature of the present invention is mainly to obtain air throttle different opening, the objective data of blowdown valve pressure release sound quality when vehicle acceleration receives throttle after travelling in different engine situation, the method has directly, effectively, feature efficiently, this proving installation application conditions is simple, with low cost, be easy to operation, there is stronger versatility.Proving installation of the present invention can adapt to the air inlet blowdown valve pressure release sound quality estimating with turbosupercharger vehicle, for providing a kind of simple, practical, economic proving installation with turbosupercharger automotive air intake blowdown valve pressure release sound quality optimization.
Accompanying drawing explanation
Fig. 1 is that simplified schematic diagram arranged by proving installation of the present invention;
Fig. 2 is that proving installation of the present invention is arranged and power assembly principle schematic;
Fig. 3 is proving installation frame principle figure of the present invention.
In accompanying drawing, critical piece illustrates: in Fig. 1: 1-driving cabin; 2-engine crankshaft belt pulley; 3-photoelectric sensor stationary fixture; 4-Keyemce FS01 model photoelectric sensor; 5-nacelle; 6-power assembly; 7-wire harness; 8. vehicle OBD detects mouth; The gas pedal pad device that 9-is adjustable.
In Fig. 2: 10-PCB.377A12 model microphone; 11-air inlet blowdown valve; 12-air intake intercooler; 13-air throttle; 14-cylinder; 15-turbine wheel; 16-turbosupercharger; 17-compressor wheel; 18-air cleaner; 19-air intake opening.
In Fig. 3: 20-Elm327 throttle opening tester; 21-HEADAcoustic6B data acquisition unit; 22-computing machine.
The present invention to be described in further detail by example below in conjunction with accompanying drawing; but following example is only the present invention's example wherein; do not represent the rights protection scope that the present invention limits, the scope of the present invention is as the criterion with claims.
Embodiment
example 1
Shown in Fig. 1-Fig. 3, in figure 8 is vehicle OBD detection mouth, described vehicle OBD detects mouth 8 output terminal and is connected with the input end of Elm327 throttle opening tester 20, and Elm327 throttle opening tester 20 output terminal is connected with the input end of HEADAcoustic6B data acquisition unit 21; PCB.377A12 model microphone 10 output terminal being fixedly installed on distance vehicle intake blowdown valve 11 horizontal direction 100-200mm is connected with the input end of HEADAcoustic6B data acquisition unit 21, is fixed on Keyemce FS01 model photoelectric sensor 4 output terminal photoelectric sensor stationary fixture 3 outside crank pulley 2 gathering engine rotational speed signal and is connected with the input end of HEADAcoustic6B data acquisition unit 21; HEADAcoustic6B data acquisition unit 21 output terminal is connected with computing machine 22 input end.
In addition, 1 in figure is driving cabin; 5 is nacelle; 6 is power assembly; 7 is wire harness; 12 is air intake intercooler; 13 is air throttle; 14 is cylinder; 15 is turbine wheel; 16 is turbosupercharger; 17 is compressor wheel; 18 is air cleaner; 19 is air intake opening.
Be fixed with microphone 10, Elm327 throttle opening tester 20 one end socket at the air inlet blowdown valve 11 horizontal direction 100mm place of distance vehicle to detect mouth 8 with the OBD of vehicle and be connected, detection throttle opening amount signal; Keyemce FS01 model photoelectric sensor 4 is fixed on the photoelectric sensor stationary fixture 3 outside crank pulley 2 and gathers engine rotational speed signal, HEADAcoustic6B data collector 21 is connected with PCB.377A12 model microphone 10, Elm327 throttle opening tester 20 and photoelectric sensor 4, regulate adjustable gas pedal pad device 9, test.
Testing procedure is as follows: by regulating adjustable gas pedal pad device 9, regulate and fix when step on subject throttle aperture of fitting with cushion block of gas pedal is the position of the gas pedal pad device of 90%, accelerate when throttle opening is 90%, gas pedal is unclamped immediately when engine speed rises to 2000rpm, this process HEADAcoustic6B data collector carries out test data collection, repeatedly, test is completed after recording 4 groups of Validity Test data.By the Artemis data analysis software of Lang De company, blowdown valve pressure release sound quality is analyzed, calculate the psychologic acoustics parameter such as roughness Roughness and sharpness Sharpness and carry out objective evaluation air inlet blowdown valve pressure release sound quality.
example 2
Shown in Fig. 1-Fig. 3, the structure of the present embodiment is identical with example 1, therefore omits.Be fixed with PCB.377A12 model microphone 10, Elm327 throttle opening tester 20 one end socket at the air inlet blowdown valve 11 horizontal direction 100mm place of distance vehicle to detect mouth 8 with the OBD of vehicle and be connected, detection throttle opening amount signal; Keyemce FS01 model photoelectric sensor 4 is fixed on the fixture 3 outside crank pulley 2 and gathers engine rotational speed signal, HEADAcoustic6B data collector 21 is connected with PCB.377A12 model microphone 10, Elm327 throttle opening tester 20 and Keyemce FS01 model photoelectric sensor 4, regulate adjustable gas pedal pad device 9, test.
Testing procedure is as follows: by regulating adjustable gas pedal pad device 9, regulate and fix when step on subject throttle aperture of fitting with cushion block of gas pedal is the position of the gas pedal pad device of 70%, accelerate when throttle opening is 70%, gas pedal is unclamped immediately when engine speed rises to 3000rpm, this process HEADAcoustic6B data collector carries out test data collection, repeatedly, test is completed after recording 4 groups of Validity Test data.Data analysis soft method is with example 1.
example 3
Shown in Fig. 1-Fig. 3, be fixed with PCB.377A12 model microphone 10, Elm327 throttle opening tester 20 one end socket at the air inlet blowdown valve 11 horizontal direction 100mm place of distance vehicle and detect mouth 8 with the OBD of vehicle and be connected, detection throttle opening amount signal; Keyemce FS01 model photoelectric sensor 4 is fixed on the fixture 3 outside crank pulley 2 and gathers engine rotational speed signal, HEADAcoustic6B data collector 21 is connected with PCB.377A12 model microphone 10, Elm327 throttle opening tester 20 and Keyemce FS01 model photoelectric sensor 4, regulate adjustable gas pedal pad device 9, test.
Testing procedure is as follows: by regulating adjustable gas pedal pad device 9, regulate and fix when step on subject throttle aperture of fitting with cushion block of gas pedal is the position of the gas pedal pad device of 50%, accelerate when throttle opening is 50%, gas pedal is unclamped immediately when engine speed rises to 2500rpm, this process HEADAcoustic6B data collector carries out test data collection, repeatedly, test is completed after recording 4 groups of Validity Test data.Data analysis soft method is with example 1.
Data instance 1 to example 18 related data in following three forms, because the technical scheme of example 4 to example 18 is all same as Example 1, therefore omits it.
Table 1 is throttle opening and the microphone noise roughness apart from different engine in blowdown valve invariant position situation:
To be certain vehicle throttle opening be table 1 100%, microphone is apart from blowdown valve 100mm position, the result of the roughness of the blowdown valve noise tested under different engine operating mode, the rising along with engine speed can be drawn, under certain revolution, there will be the maximal value of noise roughness.In six kinds of operating modes of this vehicle test, engine speed blowdown valve noise roughness when 2400rpm reaches maximal value, sound inferior quality.
Table 2 is engine speed and the microphone noise roughness apart from different solar terms door aperture in blowdown valve invariant position situation:
Table 2 is certain vehicle engine speed is that 2400rpm, microphone are apart from blowdown valve 100mm position, the result of the roughness of the blowdown valve noise tested under different solar terms door aperture operating mode, can show that the change along with throttle opening is large, noise roughness presents the trend of increase.In six kinds of operating modes of this vehicle test, throttle opening blowdown valve noise roughness when 100% maximum throttle opening reaches maximal value, sound inferior quality.
Along with the increase noise roughness of throttle opening increases, sound quality variation.Along with the rising of engine speed, under certain revolution, there will be the maximal value of noise roughness.
Table 3 is the noise roughness that in engine speed and the constant situation of throttle opening, microphone is different apart from blowdown valve position:
Table 3 is that certain vehicle throttle opening is 100%, engine speed is 2400rpm, microphone is apart from the result of the roughness of the blowdown valve noise of blowdown valve 100-200mm diverse location place test, the increase along with microphone distance blowdown valve distance can be drawn, blowdown valve noise roughness value change and faint, can be considered same level.
Claims (5)
1. a turbosupercharger air inlet blowdown valve pressure release noise-measuring system, it includes vehicle OBD and detects mouth, it is characterized in that: vehicle OBD detects mouth output terminal and is connected with the input end of throttle opening tester, and throttle opening tester output terminal is connected with the input end of data acquisition unit; The microphone out put terminals being fixedly installed on distance vehicle intake blowdown valve horizontal direction 100-200mm is connected with the input end of data acquisition unit, and the input end being fixed on the photosensor output and data acquisition unit that the fixture outside crank pulley gathers engine rotational speed signal is connected; Data acquisition unit output terminal is connected with computer input end.
2. turbosupercharger air inlet blowdown valve pressure release noise-measuring system according to claim 1, is characterized in that: described throttle opening tester is Elm327 throttle opening tester.
3. turbosupercharger air inlet blowdown valve pressure release noise-measuring system according to claim 1, is characterized in that: described data acquisition unit is HEADAcoustic6B data acquisition unit.
4. turbosupercharger air inlet blowdown valve pressure release noise-measuring system according to claim 1, is characterized in that: described microphone is PCB.377A12 model microphone.
5. turbosupercharger air inlet blowdown valve pressure release noise-measuring system according to claim 1, is characterized in that: described photoelectric sensor is Keyemce FS01 model photoelectric sensor.
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| CN201510616772.2A CN105181352A (en) | 2015-09-23 | 2015-09-23 | Device for testing pressure relief noise of air inlet pressure relief valve of turbocharger |
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| CN201510616772.2A CN105181352A (en) | 2015-09-23 | 2015-09-23 | Device for testing pressure relief noise of air inlet pressure relief valve of turbocharger |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106840375A (en) * | 2017-01-11 | 2017-06-13 | 浙江吉利汽车研究院有限公司 | A kind of turbocharger extraordinary noise method of testing and its device |
| CN108931296A (en) * | 2018-07-30 | 2018-12-04 | 苏州中汽检测技术服务有限公司 | Automobile relief valve noise grade test experience equipment, detection system and detection method |
| CN109681316A (en) * | 2018-12-28 | 2019-04-26 | 重庆长安汽车股份有限公司 | A kind of air intake structure of turbocharging automobile |
| CN109916505A (en) * | 2019-04-11 | 2019-06-21 | 重庆大学 | A kind of turbocharger extraordinary noise test device and method |
| CN109946092A (en) * | 2019-04-01 | 2019-06-28 | 重庆大学 | A kind of automotive ventilation air vent relief valve noise measuring system |
| CN110243611A (en) * | 2019-06-19 | 2019-09-17 | 江铃汽车股份有限公司 | A kind of booster noise control method |
| CN111366347A (en) * | 2019-10-22 | 2020-07-03 | 襄阳达安汽车检测中心有限公司 | Method for diagnosing abnormal sound of turbocharger |
| CN112268708A (en) * | 2020-09-21 | 2021-01-26 | 西北工业大学 | Axial flow turbine refined acoustic experimental device and experimental method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840375A (en) * | 2017-01-11 | 2017-06-13 | 浙江吉利汽车研究院有限公司 | A kind of turbocharger extraordinary noise method of testing and its device |
| CN106840375B (en) * | 2017-01-11 | 2019-06-18 | 浙江吉利汽车研究院有限公司 | A kind of turbocharger extraordinary noise test method and its device |
| CN108931296A (en) * | 2018-07-30 | 2018-12-04 | 苏州中汽检测技术服务有限公司 | Automobile relief valve noise grade test experience equipment, detection system and detection method |
| CN109681316A (en) * | 2018-12-28 | 2019-04-26 | 重庆长安汽车股份有限公司 | A kind of air intake structure of turbocharging automobile |
| CN109946092A (en) * | 2019-04-01 | 2019-06-28 | 重庆大学 | A kind of automotive ventilation air vent relief valve noise measuring system |
| CN109916505A (en) * | 2019-04-11 | 2019-06-21 | 重庆大学 | A kind of turbocharger extraordinary noise test device and method |
| CN110243611A (en) * | 2019-06-19 | 2019-09-17 | 江铃汽车股份有限公司 | A kind of booster noise control method |
| CN111366347A (en) * | 2019-10-22 | 2020-07-03 | 襄阳达安汽车检测中心有限公司 | Method for diagnosing abnormal sound of turbocharger |
| CN112268708A (en) * | 2020-09-21 | 2021-01-26 | 西北工业大学 | Axial flow turbine refined acoustic experimental device and experimental method |
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Application publication date: 20151223 |