CN102400827B - Flow characteristic testing platform of oil injector of motorcycle - Google Patents
Flow characteristic testing platform of oil injector of motorcycle Download PDFInfo
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- CN102400827B CN102400827B CN 201110377420 CN201110377420A CN102400827B CN 102400827 B CN102400827 B CN 102400827B CN 201110377420 CN201110377420 CN 201110377420 CN 201110377420 A CN201110377420 A CN 201110377420A CN 102400827 B CN102400827 B CN 102400827B
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Abstract
The invention relates to a flow characteristic testing platform of an oil injector of a motorcycle, comprising a testing platform main body, a control main machine, a fuel oil supplying system and a detecting and displaying system, wherein the testing platform main body comprises a cabinet body and an oil injector fixing clamp arranged in the cabinet body; the detecting and displaying system comprises a voltmeter, an oil temperature meter, an oil pressure meter and a temperature meter which are arranged on the testing platform main body; the control main machine is connected with the oil injector arranged on the oil injector fixing clamp by an oil injector controller; the detecting and displaying system and the oil injector are connected with the fuel oil supplying system; the flow characteristic testing platform also comprises a testing system for testing dynamic flow, static flow and invalid injection time of the oil injector; and the testing system is connected with the control main machine. In the flow characteristic testing platform, the working characteristics such as the dynamic flow, the static flow and the invalid injection time and the like of the oil injector can be detected, so that the basis is provided for accurate fault judgment and section and development working of the oil injector of the motorcycle; and the structure is simple, the control testing accuracy is high and the application range is wide.
Description
Technical field
The present invention relates to a kind of motorcycle engine fuel oil supply system detection facility, more specifically, relate to a kind of flow-characteristic test bench of fuel injector of motorcycle.
Background technique
Existing electronic fuel injection system flow characteristic testing platform of oil injector is mainly used in the automobile running repairs and detects, the automobile oil sprayer that for example comprises this test stand detects washing machine, its major function is that the automobile oil sprayer is detected and cleans, automotive fuel oil system is exempted to demolition clean and Pressure testing, to air intake manifold of automotive engine, cylinder, distribution device carries out the cleaning of de-carbon foam and recovery and automotive fuel oil system is carried out to emulation, in general, this equipment is just for judging the quality of automobile oil sprayer, judge whether to change oil sprayer according to testing result, more for the auto repair occasion, but requiring higher occasion, this oil sprayer detects washing machine and just can not use, its main deficiency is: can only simply judge the quality of automobile oil sprayer and clean oil sprayer, but this equipment is controlled software without the oil sprayer test, without flowmeter and electronic balance, claim etc. to carry out to the fuel injection quantity of oil sprayer the detection facility of quantitative test, testing precision to the oil injector of motorcycle performance characteristic is poor, make the user can't obtain more accurate data and meet the needs to the electronic fuel control system for motor cycle exploitation.
Summary of the invention
Purpose of the present invention, overcome the deficiencies in the prior art exactly, and a kind of flow-characteristic test bench of fuel injector of motorcycle is provided, and this test platform structure is simple, controls testing precision high, is applicable to various model motorcycle small flow oil sprayers.
In order to achieve the above object, adopt following technological scheme:
A kind of flow-characteristic test bench of fuel injector of motorcycle, comprise the test stand main body, main control system, the fuel supply system detection display system of unifying, described test stand main body comprises cabinet and is installed on the oil sprayer mounting fixture in cabinet, described detection display system comprises the voltmeter be installed on the test stand main body, oil temperature gauge, oil pressure gauge and thermometer, described main control system is connected with the oil sprayer on being installed on the oil sprayer mounting fixture by the oil sprayer controller, described detection display system is connected with fuel oil supply system with oil sprayer, also comprise for testing the dynamic flow of oil sprayer, the test system of quiescent flow and invalid discharge time, described test system is connected with main control system.
Further, the control parameter of described main control system instruction oil sprayer oil spout at least comprises single injection event time, discharge time interval and injecting times.
As a kind of specific embodiment, described detection system comprises the flowmeter for detection of oil sprayer fuel injection quantity within the unit time, and described flowmeter is arranged at the oil sprayer upstream and is connected with main control system.
Further, described flowmeter is provided with for showing the flow monitor instrument of present flow rate numerical value.
As a kind of specific embodiment, described detection system comprises that oil sprayer sprays oily measuring bottle and, for measuring the Precision Electronics Balance of measuring bottle weight, described Precision Electronics Balance is connected with control system for collecting.
Further, described test stand cabinet in the vertical direction is provided with at least two for the mounting hole of oil sprayer mounting fixture is installed.
Again further, described oil sprayer mounting fixture comprises fitting seat, adjusts pillar and fuel inlet fitting, and described fitting seat is fixed in cabinet by mounting hole, adjusts pillar and vertically is fixed in fitting seat, and fuel inlet fitting is movably connected on adjusts the pillar upper end portion.
Further, described fuel oil supply system comprises fuel tank, is placed in oil pump and the high-pressure oil pipe be connected with oil pump in fuel tank, the other end of high-pressure oil pipe is connected with oil sprayer, described test stand main body also is provided with for reclaiming the oil groove of high pressure oil at the bottom position of oil sprayer mounting fixture, and described oil groove is communicated with fuel tank by return tube.
Also further, between described high-pressure oil pipe and oil sprayer, be provided with fuel dispensing tube, the quantity of described oil sprayer is at least 1.
Also further, be provided with one or more in fuel filter, precise pressure regulating valve and main line on-off valve on described high-pressure oil pipe pipeline.
Compared with prior art, beneficial effect of the present invention is, by installing separately flowmeter additional or install separately measuring bottle additional and Precision Electronics Balance formation detection system on conventional fuel injector test stand basis, realized the quantitative detection to the oil sprayer fuel injection quantity, further can be to the dynamic flow of test oil sprayer, the performance characteristic such as quiescent flow and invalid discharge time is detected, for the judgement of accurate fault and the type selecting development of oil injector of motorcycle provides foundation, this test platform structure is simple, reliable working performance, the control testing precision is high, and be applicable to various model motorcycle small flow oil sprayers.
The accompanying drawing explanation
The overall structure schematic diagram that Fig. 1 is flow-characteristic test bench of fuel injector of motorcycle embodiment 1 of the present invention.
The generalized section that Fig. 2 is flow-characteristic test bench of fuel injector of motorcycle embodiment 1 of the present invention.
The oil sprayer fixing jig structure schematic diagram that Fig. 3 is flow-characteristic test bench of fuel injector of motorcycle embodiment 1 of the present invention.
The fuel oil supply system schematic diagram that Fig. 4 is flow-characteristic test bench of fuel injector of motorcycle embodiment 1 of the present invention.
The overall structure schematic diagram that Fig. 5 is flow-characteristic test bench of fuel injector of motorcycle embodiment 2 of the present invention.
Fig. 6 is the invalid discharge time statistics of flow-characteristic test bench of fuel injector of motorcycle of the present invention schematic diagram.
Fig. 7 is flow-characteristic test bench of fuel injector of motorcycle oil sprayer circulating fuel injection quantity of the present invention-fuel injection pulsewidth plotted curve.
In figure: the 1-cabinet; 2-oil sprayer mounting fixture; The 3-DC electrical source; The 4-main control system; The 5-voltmeter; The 6-oil temperature gauge; The 7-oil pressure gauge; The 8-thermometer; The 9-oil sprayer; The 10-oil pump; The 11-flowmeter; The 12-flow monitor instrument; The 13-measuring bottle; The 14-Precision Electronics Balance; 141-the second connection; The 15-fuel tank; The 16-high-pressure oil pipe; The 17-precise pressure regulating valve; The 18-fuel filter; 19-fuel oil on-off valve; The 20-oil returning tube; 21-oil temperature detecting head; The 22-fitting seat; 221-fitting seat mounting hole; 23-adjusts pillar; The 24-fuel inlet fitting; The 241-nipple orifice; The 25-oil groove; The 26-fuel dispensing tube; The 30-oil sprayer, 40-cabinet mounting hole; 41-the first connection.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described:
Embodiment 1
Referring to Fig. 1～Fig. 3, a kind of flow-characteristic test bench of fuel injector of motorcycle, comprise the test stand main body, main control system 4, the fuel supply system detection display system of unifying, described test stand main body comprises cabinet 1 and is installed on the oil sprayer mounting fixture 2 in cabinet 1, described detection display system comprises the voltmeter 5 be installed on the test stand main body, oil temperature gauge 6, oil pressure gauge 7 and thermometer 8, described main control system 4 by the first connection 41 be installed on oil sprayer mounting fixture 2 on the oil sprayer controller 91 of oil sprayer 9 be connected, described detection display system is connected with fuel oil supply system with oil sprayer 9, this Laboratory Furniture also comprises and being connected with main control system 4 for testing the dynamic flow of oil sprayer 9, the test system of quiescent flow and invalid discharge time, the control parameter of main control system 4 instruction oil sprayer 9 oil spouts at least comprises the single injection event time, discharge time interval and injecting times, detection system comprises the flowmeter 11 for detection of oil sprayer 9 fuel injection quantity within the unit time, described flowmeter 11 is arranged at oil sprayer 9 upstreams and is connected with main control system 4, described flowmeter 11 is provided with the flow monitor instrument 12 for showing present flow rate numerical value, the temperature of the oil temperature detecting head 21 pair high pressure fuels of described oil temperature gauge 6 by being placed in fuel tank 15 is measured, in the present embodiment, flowmeter accuracy 0.01g/s, the measurement time precision is 1ms.
Described test stand cabinet 1 in the vertical direction is provided with at least two mounting holes 40 for oil sprayer mounting fixture 2 is installed, mounting hole 40 vertically is linear array, when the oil sprayer 9 of test different size, thereby the up-down adjustment that can realize oil sprayer 9 by oil sprayer mounting fixture 2 being fixed in to different mounting hole 40, described oil sprayer mounting fixture 2 comprises fitting seat 22, adjust pillar 23 and fuel inlet fitting 24, be provided with the tapped hole that cabinet mounting hole 40 matches on described fitting seat 22, fitting seat 22 is flexibly connected by bolt and cabinet 1, adjusting pillar 23 vertically is fixed on fitting seat 22, fuel inlet fitting 24 is movably connected on adjusts pillar 23 upper end portions, fuel inlet fitting 24 can be provided for the connecting pin of locating with adjustment pillar 23 joints.In actual test process, can adjust the height dimension of adjusting pillar 23 on oil sprayer mounting fixture 2 or change fitting seat mounting hole 221 aperture sizes and nipple orifice 241 aperture sizes by changing fitting seat 22 or fuel inlet fitting 24 according to the oil injector of motorcycle 9 of different model, to realize the test of same test stand to the different size oil sprayer.
Referring to Fig. 4, described fuel oil supply system comprises fuel tank 15, be placed in oil pump 10 and the high-pressure oil pipe 16 be connected with oil pump 10 in fuel tank 15, the other end of high-pressure oil pipe 16 is connected with oil sprayer 9, described test stand main body also is provided with the oil groove 25 for reclaiming high pressure oil at the bottom position of oil sprayer mounting fixture 2, described oil groove 25 is communicated with fuel tank 15 by return tube 20, in order to realize same test stand, many oil sprayers 9 are tested simultaneously, being provided with fuel dispensing tube 26 between described high-pressure oil pipe 16 and oil sprayer 9 makes working connection be divided into the multi-channel test oil circuit, with the measurement that realizes multiple oil sprayer and the endurance test of oil sprayer of the same race, be provided with fuel filter 18 on above-mentioned high-pressure oil pipe 16 pipelines, one or more in precise pressure regulating valve 17 and fuel oil on-off valve 19.
Based on above-mentioned functions structure and setting thereof, flow-characteristic test bench of fuel injector of motorcycle of the present invention is tested in the following way:
At first connect DC electrical source 11, voltage is adjusted to the operating voltage 12V that test system component needs, oil pump 10 is started working and high pressure fuel is provided, oil pressure in conjunction with the registration of oil pressure gauge 7 by 10 pairs of fuel oil supply systems of oil pump carries out coarse adjustment, finely tuned by 17 pairs of system oil pressures of precise pressure regulating valve again, finally make fuel pressure reach and set working pressure (being generally 250kPa or 300kPa), high pressure fuel flows out after fuel tank 15 fuel filter 18 of flowing through successively in high-pressure oil pipe 16, precision pressure modulating valve 17, the rear oil sprayer 9 that finally reaches of fuel oil on-off valve 19 carries out the oil spout test, upstream at oil sprayer 9 also is provided with oil pressure gauge 7, oil sprayer includes oil sprayer controller 91 and control valve 92, described oil sprayer controller 91 is connected with control valve 92 and for controlling the injection process of oil sprayer 9, main control system 4 is controlled oil sprayer 9 work oil spouts and is gathered the numerical value of flow monitor instrument 12, finally by default formula, calculate the dynamic flow of current oil sprayer 9, quiescent flow and invalid discharge time, the fuel oil that oil sprayer 9 ejects passes back into fuel tank 15 by oil returning tube 20 and fuel filter 18, finally realize recycling of fuel oil, to test cabinet 1 plexiglass tent when carrying out testing experiment closes, to prevent that fuel oil volatilization from causing the harm to tester and environment.
Should be appreciated that, in foregoing description, except the Nomenclature Composition and Structure of Complexes of test system, other arrange other embodiments that all are applicable to this specification.
Below as follows to the quantitative test procedure declaration of flow-characteristic test bench of fuel injector of motorcycle of the present invention:
The mensuration of static Spraying rate Qs: allow oil sprayer 9 in standard-sized sheet under standard test condition, by flowmeter 11 record its in each single injection event the flow in the time add up and average by main control system, this mean value is the static Spraying rate Qs of oil sprayer 9.
The mensuration of dynamic flow Qd: set fuel injection pulsewidth and move by oil sprayer under standard test condition, by flowmeter 11, record its flow value, this flow value is the dynamic flow Qd of oil sprayer 9 divided by injecting times.
The mensuration of dynamic Spraying rate Q: under the fuel injection pulsewidth PW set and pulse interval T condition, record the flow value of oil sprayer 9 by flowmeter 11, this flow value, divided by pulse number and pulsewidth time, is the dynamic Spraying rate Q of oil sprayer 9.
The mensuration of invalid discharge time: the control valve 92 of oil sprayer 9 starts to be energized to spool from coil and has one period retard time between opening fully, is called to open to postpone, and close fully to spool after coil blackout, is also arranged one period retard time, is called and closes delay.Because trunon delay time is greater than turn-off delay time, so actual fuel delivery will be less than required fuel delivery, and trunon delay time cuts turn-off delay time and just is called invalid discharge time.When multi-injection, in order to obtain correct fuel delivery, must figure invalid discharge time in, that is to say that the oil mass that will add invalid discharge time ejection after calculating fuel delivery just can be with needed identical, therefore, invalid discharge time also can be considered that compensation is sprayed, invalid discharge time adopts physics dynamical fashion algorithm: because electromagnetic coil is inductive load, directly measure coil currents or voltage can not truly reflect dynamic characteristic, can and catch invalid injection time transition point (referring to Fig. 6) by the electric current that detects this resistance by resistance of series connection is less on the drive circuit of electromagnetic coil resistance R (can be 0.1 Europe).
Referring to Fig. 7, control valve 92 starts to be energized to the complete opening procedure of spool from coil, its coil current growth rate is very fast, and in invalid injection time transition point, the electric current of series resistors R is through oppositely there will be a spike after differential, this peak current provides foundation for invalid injection time, this signal, after processing of circuit, is input to the interrupt pin of main control system, from this time point timing concluding time summation, is exactly invalid injection time, based on above-mentioned theory, a kind of possible algorithm is as follows:
S1: open the oil pump feed pulse simultaneously and calculate pulse, supposing that pulsewidth T can get 20ms, the C pulse interval is 1 μ s, endurance t
1; s
2: when control valve 92 spools are opened fully, series resistors R there will be peak voltage, and produces the step-by-step counting interrupt signal; S3: the number of statistics pulse output C, just can draw needed time when needle-valve is opened fully, invalid injection time namely, for example: if count, 1400 pulses are arranged, namely invalid injection time is 1.4ms.
Embodiment 2
The present embodiment is from the different of embodiment 1: described flow-characteristic test bench of fuel injector of motorcycle has been cancelled flow monitor instrument and flowmeter 11 on embodiment 1 basis, measuring bottle 13 and Precision Electronics Balance 14 have been increased simultaneously, therefore the detection system in the present embodiment comprises for collecting the oily measuring bottle 13 of oil sprayer 9 ejection and for measuring the Precision Electronics Balance 14 of measuring bottle 13 weight, above-mentioned Precision Electronics Balance 14 is connected with main control system 4 by the second connection 141, in the present embodiment, the precise electronic balance claims precision 0.001g, and the measurement time precision is 1ms.
Based on the present embodiment detection system, the quantitative measuring method of flow-characteristic test bench of fuel injector of motorcycle of the present invention is as follows:
The mensuration of static Spraying rate Qs: allow oil sprayer 9 in standard-sized sheet under standard test condition and set single injection event time t
2, by mass change (fuel injection quantity) m2 of Precision Electronics Balance 14 calculating measuring bottles 13, the static Spraying rate Qs=m of oil sprayer 9
2/ t
2.
Dynamic flow Q
dmensuration: set fuel injection pulsewidth and injecting times N continuous injection under standard test condition, calculate mass change (fuel injection quantity) m3 of measuring bottles 13 by Precision Electronics Balance 14, the dynamic flow Q of oil sprayer
d=m3/N.
The dynamic mensuration of Spraying rate Q: under the fuel injection pulsewidth PW set and pulse interval T condition and spray N time, by mass change (fuel injection quantity) m of Precision Electronics Balance 14 calculating measuring bottles 13
4, the dynamic Spraying rate Q=m of oil sprayer 9
4/ (N*PW).
Mensuration process and the embodiment 1 of invalid discharge time are similar, are not repeating herein.
Should be appreciated that; the content that above specific embodiment is announced is only part preferred version of the present invention; every based on technological scheme of the present invention, technical spirit according to the invention, belonging to those skilled in the art is that available enforcement all should belong to protection scope of the present invention without carrying out creative work.
Claims (7)
1. a flow-characteristic test bench of fuel injector of motorcycle, comprise test stand main body, main control system, the fuel supply system detection display system of unifying, described test stand main body comprises cabinet and is installed on the oil sprayer mounting fixture in cabinet, described detection display system comprises voltmeter, oil temperature gauge, oil pressure gauge and the thermometer be installed on the test stand main body, described main control system by the oil sprayer controller with the oil sprayer on being installed on the oil sprayer mounting fixture, be connected, described detection display system is connected with fuel oil supply system with oil sprayer, it is characterized in that
The test system that also comprises the dynamic flow for testing oil sprayer, static Spraying rate and invalid discharge time, described test system is connected with main control system, the control parameter of described main control system instruction oil sprayer oil spout, control parameter and at least comprise single injection event time, discharge time interval and injecting times, described detection display system comprises the flowmeter for detection of oil sprayer fuel injection quantity within the unit time, and described flowmeter is arranged at the oil sprayer upstream and is connected with main control system;
Described invalid discharge time adopts physics dynamical fashion algorithm, by resistance of series connection is less on the drive circuit of electromagnetic coil resistance and catch invalid injection time transition point by the electric current that detects this resistance and realize.
2. flow-characteristic test bench of fuel injector of motorcycle as claimed in claim 1, is characterized in that, described flowmeter is provided with for showing the flow monitor instrument of present flow rate numerical value.
3. as the described flow-characteristic test bench of fuel injector of motorcycle of claim 1-2 any one, it is characterized in that, described test stand cabinet in the vertical direction is provided with at least two for the mounting hole of oil sprayer mounting fixture is installed.
4. flow-characteristic test bench of fuel injector of motorcycle as claimed in claim 3, it is characterized in that, described oil sprayer mounting fixture comprises fitting seat, adjusts pillar and fuel inlet fitting, described fitting seat is fixed in cabinet by mounting hole, adjust pillar and vertically be fixed in fitting seat, fuel inlet fitting is movably connected on adjusts the pillar upper end portion.
5. as the described flow-characteristic test bench of fuel injector of motorcycle of claim 1-2 any one, it is characterized in that, described fuel oil supply system comprises fuel tank, is placed in oil pump and the high-pressure oil pipe be connected with oil pump in fuel tank, the other end of high-pressure oil pipe is connected with oil sprayer, described test stand main body also is provided with for reclaiming the oil groove of high pressure oil at the bottom position of oil sprayer mounting fixture, and described oil groove is communicated with fuel tank by return tube.
6. flow-characteristic test bench of fuel injector of motorcycle as claimed in claim 5, is characterized in that, between described high-pressure oil pipe and oil sprayer, is provided with fuel dispensing tube, and the quantity of described oil sprayer is at least 1.
7. flow-characteristic test bench of fuel injector of motorcycle as claimed in claim 6, is characterized in that, is provided with one or more in fuel filter, precise pressure regulating valve and main line on-off valve on described high-pressure oil pipe pipeline.
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| CN 201110377420 CN102400827B (en) | 2011-11-23 | 2011-11-23 | Flow characteristic testing platform of oil injector of motorcycle |
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| CN102400827B true CN102400827B (en) | 2013-12-25 |
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| CN103967677B (en) * | 2014-05-09 | 2016-04-20 | 无锡职业技术学院 | Diesel fuel system circulating fuel injection quantity electric-controlled type testing apparatus and test method |
| CN105201719A (en) * | 2015-04-08 | 2015-12-30 | 泰安市鲁科海电子信息产业有限公司 | Pneumatic PT injector test stand |
| CN106224150A (en) * | 2016-09-19 | 2016-12-14 | 天津帅通科技发展有限公司 | A kind of engine fuel injection pipe flux monitoring system |
| CN106802343A (en) * | 2016-12-29 | 2017-06-06 | 浙江吉利控股集团有限公司 | A kind of methanol fuel method for testing performance and device for vehicle |
| CN108223227A (en) * | 2017-12-29 | 2018-06-29 | 中船动力研究院有限公司 | A kind of gas fuel injection valves it is multifunction detection-test bed |
| CN108414214A (en) * | 2018-06-07 | 2018-08-17 | 联合汽车电子（重庆）有限公司 | Fuel distribution pipe assembly environment durability test apparatus |
| CN108869033B (en) * | 2018-06-09 | 2021-01-29 | 安徽华兴车辆有限公司 | Engine oil pump core vibration measuring device |
| CN110985257B (en) * | 2019-12-23 | 2020-11-27 | 上海星融汽车科技有限公司 | Method for identifying jamming of electronic valve |
| CN111648896B (en) * | 2020-06-08 | 2021-07-16 | 一汽解放汽车有限公司 | Flow test system of integrated oil-gas control dual-fuel direct injection injector |
| CN112964474B (en) * | 2021-02-09 | 2023-10-13 | 中国航发哈尔滨东安发动机有限公司 | Low-pressure fuel flow measurement system and method for aviation |
| CN114263555B (en) * | 2021-09-09 | 2023-09-12 | 翟泉来 | Verification device for fuel spray nozzle of engine of miniature ship |
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