CN102297066B - System and method for detecting spraying angle of engine oil sprayer - Google Patents
System and method for detecting spraying angle of engine oil sprayer Download PDFInfo
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- CN102297066B CN102297066B CN 201110284277 CN201110284277A CN102297066B CN 102297066 B CN102297066 B CN 102297066B CN 201110284277 CN201110284277 CN 201110284277 CN 201110284277 A CN201110284277 A CN 201110284277A CN 102297066 B CN102297066 B CN 102297066B
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Abstract
The invention discloses a system for detecting a spraying angle of an engine oil sprayer. The system comprises a pressure source, wherein the pressure source comprises an oil pump; the oil pump is connected with a test head through a pipeline, the pipeline for communicating the oil pump with the test head is provided with a first electromagnetic directional valve and a one-way valve, the first electromagnetic directional valve is connected with a pressure relay, a pipeline for connecting the first electromagnetic directional valve with the pressure relay is provided with a hydraulic control one-way valve which is communicated with a second electromagnetic directional valve, a pipeline for communicating the pressure relay with the hydraulic control one-way valve is provided with a connecting branch pipeline, the other end of the connecting branch pipeline is communicated with the pipeline for communicating the test head with the one-way valve, a second overflow valve is arranged on the second electromagnetic directional valve, and a spraying disk and a weighing sensor are arranged below the test head. The invention also discloses a method of the system. The system and the method for detecting the spraying angle of the engine oil sprayer are used for testing the spraying angle and the spraying range of the oil sprayer by simulating the operation environment of an engine, and has the advantages of high detection speed and high detection precision.
Description
Technical field
The present invention relates to a kind of method of utilizing tracer liquid weight to the method and system that oil sprayer spray regime and angle detect, be specifically related to a kind of detection system and detecting method thereof of spraying angle of engine oil sprayer.
Background technique
In various industrial systems and automotive industry, fuel injector for internal combustion engines is comparatively common, is provided with oil nozzle on the oil sprayer, and oil sprayer is received the fuel injection pulse signal in the automobile, can accurately control fuel injection amount.Oil sprayer is very highland accurate device of a kind of machining accuracy, then present, the detection of oil sprayer spray regime and angle, people adopt manual observation that the oil sprayer spray angle is detected always, this angle that rests on qualitative manual observation is difficult to satisfy the requirement of the injection accuracy that present motor improves day by day to oil sprayer.And detect without the spray angle of special machine to engine fuel injector in the market, the testing precision of utilizing the angle of manual observation to carry out is lower.
Summary of the invention
First purpose of the present invention is: in order to overcome the deficiencies in the prior art, the invention provides a kind of detection system that detects the high spraying angle of engine oil sprayer of precision; Second purpose of the present invention is: in order to overcome the deficiencies in the prior art, the invention provides a kind of detecting method of measuring quick, accurate spraying angle of engine oil sprayer.
In order to realize first above-mentioned purpose, the present invention has adopted following technological scheme:
A kind of detection system of spraying angle of engine oil sprayer, comprise pressure source, described pressure source comprises fuel tank and by motor-driven oil pump, described oil pump is connected setting with fuel tank, described oil pump is connected with test head by pipeline, described test head is used for installing the oil nozzle of test specimen, be respectively equipped with the first solenoid directional control valve and one-way valve by oil pump to test head direction on the pipeline that both are communicated with, be provided with the first relief valve by branch line on described the first solenoid directional control valve and the pipeline that oil pump is communicated with, the first solenoid directional control valve is connected setting by pipeline with pressure relay, the pipeline that both connect is provided with Pilot operated check valve, described Pilot operated check valve is communicated with the second solenoid directional control valve by pipeline, described pressure relay is provided with the pipeline that Pilot operated check valve is communicated with and is connected branch line, the pipeline connection that the described connection branch line the other end is communicated with test head and one-way valve, described the second solenoid directional control valve is provided with the second relief valve, the second relief valve is provided with liquid storage tank away from an end of the second solenoid directional control valve, and described test head below arranges spray disk and little re-transmission sensor.
In the detection system of spraying angle of engine oil sprayer of the present invention, at least comprise a pressure source, be the detection system supply pressure, pressure source can be driven by frequency-changing control system the acquisitions such as liquor pump, also can be obtained by direct cut-in pressure source, the external world, pressure source can provide the highly pressurised liquid that is higher than test request power.When pressurizeing, the first relief valve, the first solenoid directional control valve, one-way valve, pressure relay and pipeline consist of the pressurizing system of detection system, on the pressurizing system accumulator, pressure gauge or pressure transducer can also be set, the pressurizing system effect is for the working environment of a tested element of simulation is provided by the side part.After the pressurization, detection system is carried out pressure regulation, the first relief valve, the first solenoid directional control valve, the second solenoid directional control valve, one-way valve and hydraulically-controlled one-way valve have consisted of the pressurizing system of detection system, pressure gauge or pressure transducer and accumulator can also be set on the pressurizing system, voltage-regulating system and pressurizing system share the first relief valve, the first solenoid directional control valve, one-way valve and pressure relay, voltage-regulating system can accurate adjustment measured piece required pressure difference ring border, more near the working environment of tested element.Carry out the pressurize test after the pressure regulation, one-way valve, Pilot operated check valve and spray disk and little re-transmission sensor have consisted of the pressure-retaining system of detection system, pressure gauge or pressure transducer and accumulator can also be set on the pressure-retaining system, pressure-retaining system is the core of whole detection system, by checking that being ejected into the difference that detects the liquid quality in the spray disk in the different radii annulus by oil sprayer under the pressurize environment judges whether system works is normal.After the pressurize detection system is carried out release, Pilot operated check valve, the second solenoid directional control valve and the second relief valve have consisted of the depressurized system of detection system.
As preferably, the pipeline that described the first solenoid directional control valve is communicated with oil pump is provided with the first pressure gauge, and described pressure relay, Pilot operated check valve and the connection branch line three place of being connected are provided with the second pressure gauge.After adopting above-mentioned preferred version, detection system of the present invention can make the user of service by pressure gauge the working condition of detection system be observed and be supervised, and better adjusts the pressure difference environment of measured piece.
As preferably, described the first solenoid directional control valve is the 3-position 4-way solenoid directional control valve, and described the second solenoid directional control valve is two four-way electromagnetic reversing valves.After adopting above-mentioned preferred version, structure of the present invention is more compact, when detection system detects at the spray angle to jet blower the conversion of each detection-phase more convenient, improved the working efficiency of detection system.
As preferably, the pipeline that is communicated with between described oil pump and the fuel tank is provided with the inlet port filter, and described fuel tank is provided with thermometer and level meter.After adopting above-mentioned preferred version; the inlet port filter is the Sino-German magazine of filtering fluid effectively; effectively protect the miscellaneous part in the detection system; effectively avoid the pollution of detection system; improve turbidity test; thermometer and level meter temperature and the liquid level that can observe fuel tank liquid oil be set more conveniently, be convenient to control.
As preferably, be provided with accumulator by branch line on described one-way valve and the pipeline that test head is communicated with.After adopting above-mentioned preferred version, can store in advance needed hydraulic energy, discharge again when needing, convenient and practical.
As preferably, detection system of the present invention also comprises control system.After adopting above-mentioned preferred version, can control more in phase all parts of detection system, make detection system more rapidly, work exactly, the control system system generally is made of master controller, communication bus and interface circuit and the various sensors and the electronic control unit that are distributed in each parts, and master controller generally contains display device; Master controller includes software algorithm, can calculate fast the quality of each donut build-in test liquid, and the various sensors in each sub-unit are connected interface circuit and are connected with master controller with electronic control unit.
The detection system simulation of spraying angle of engine oil sprayer of the present invention is under motor operation ground environment, and test oil sprayer spray angle and spray regime detect fast, and it is high to detect precision.
In order to realize second above-mentioned purpose, the present invention has adopted following technological scheme:
A kind of detecting method of spraying angle of engine oil sprayer is characterized in that may further comprise the steps:
(1) oil nozzle with test specimen is fixedly mounted on the test head, and sealing to whether there being air in the measured piece detects, if there is air in the measured piece, utilizes test oil that measured piece is washed and carries out exhaust.
(2) set up pressure difference in the sealing both ends of measured piece, pressure difference is set according to actual conditions.
(3) test system is carried out self check, open test system, the oil nozzle of measured piece sprays, to keep the pressure difference environment constant in the course of injection, getting spray disk all receives the test fluid of spraying, and under let out to little re-transmission sensor and carry out quality testing, by relatively and calculate liquid quality in each spray disk annulus, draw oil sprayer spray angle data.
As preferably, described test system is provided with automatic ventilating function, start automatic ventilating function after, the air in the measured piece is excluded.
Test philosophy of the present invention is that the quality of utilizing detection to be ejected into spray disk different radii donut build-in test liquid is judged oil sprayer spray regime and spray angle, detects fast accurately.
Description of drawings
Fig. 1 is total hydraulic schematic diagram of the embodiment of the invention;
Hydraulic schematic diagram when Fig. 2 is embodiment of the invention startup;
Hydraulic schematic diagram when Fig. 3 is embodiment of the invention pressurization;
The flow schematic diagram of the first solenoid directional control valve build-in test liquid oil when Fig. 4 is embodiment of the invention pressurization;
Fig. 5 is the hydraulic schematic diagram of embodiment of the invention pressure regulation;
Fig. 6 is the hydraulic schematic diagram of embodiment of the invention pressurize;
Fig. 7 is the hydraulic schematic diagram of embodiment of the invention release;
Fig. 8 is the hydraulic schematic diagram of embodiment of the invention standby.
Embodiment
As shown in Figure 1, specific embodiments of the invention are detection systems of a kind of spraying angle of engine oil sprayer, comprise pressure source, pressure source comprises fuel tank 1 and the oil pump 3 that is driven by motor 2, oil pump 2 is connected setting with fuel tank 1, oil pump 2 is connected with test head 18 by pipeline, and test head 18 is used for installing the oil nozzle of test specimen.Be respectively equipped with the first solenoid directional control valve 9 and one-way valve 10 by oil pump 2 to test head 18 directions on the pipeline of oil pump 2 and test head 18 both connections, be provided with the first relief valve 3 by branch line on the first solenoid directional control valve 9 and the pipeline that oil pump 5 is communicated with, the first solenoid directional control valve 9 is connected setting by pipeline with pressure relay 14, the pipeline that both connect is provided with Pilot operated check valve 15, Pilot operated check valve 15 is communicated with the second solenoid directional control valve 16 by pipeline, pressure relay 14 is provided with the pipeline that Pilot operated check valve 15 is communicated with and is connected branch line 12, connect branch line 12 pipeline connection that both are communicated with away from an end of pressure relay 14 and test head 18 and one-way valve 10, the second solenoid directional control valve 15 is provided with the second relief valve 16, the second relief valve 16 is provided with liquid storage tank 19 away from an end of the second solenoid directional control valve 15, and test head 18 belows arrange spray disk and little re-transmission sensor.
The pipeline that the first solenoid directional control valve 9 is communicated with oil pump 5 is provided with the first pressure gauge 2, pressure relay 14, Pilot operated check valve 15 and be connected the branch line 12 three places of converging and be provided with the second pressure gauge 13.The first solenoid directional control valve 9 is the 3-position 4-way solenoid directional control valve, and the second solenoid directional control valve 15 is two four-way electromagnetic reversing valves.The pipeline that is communicated with between oil pump 5 and the fuel tank 1 is provided with inlet port filter 5, and fuel tank 1 is provided with thermometer 6 and level meter 4.Be provided with accumulator 11 by branch line on one-way valve 10 and the pipeline that test head 18 is communicated with.The first solenoid directional control valve 9 neutral positions are connected with liquid storage tank 19, and the second relief valve 17 is connected with liquid storage tank 19 away from an end of the second solenoid directional control valve 16, and the first relief valve 7 is connected with liquid storage tank 19 with an end of the first solenoid directional control valve 9 and oil pump 5 away from it.
Detection system of the present invention also comprises control system, and the control system system generally is made of master controller, communication bus and interface circuit and the various sensors and the electronic control unit that are distributed in each parts, and master controller generally contains display device; Master controller includes software algorithm, can calculate fast the quality of each donut build-in test liquid, and the various sensors in each sub-unit are connected interface circuit and are connected with master controller with electronic control unit.
During work, as shown in Figure 2, start detection system at first, before the startup, detection system is carried out self check, level meter 4 and thermometer 6 are without unusually then motor 2 startup oil pumps 3 beginning pumps are oily, the liquid oil of test enters detection system, the first solenoid directional control valve 9 is positioned at the neutral position, in the closed position, test oil enters the first relief valve 7 by pipeline, the direction of arrow among the liquid oil flow direction of test such as the figure, because the first solenoid directional control valve 9 is in closed condition, so test head 18, accumulator 11, one-way valve 10, Pilot operated check valve 15, the second solenoid directional control valve 16, the second relief valve 17, the second pressure gauge 13 and pressure relay 14 are inoperative.The liquid oil of test enters the test pipeline through inlet port filter 5 and oil pump 3.At this moment, the first relief valve 7 is in the aperture minimum state, does not carry out overflow, and test fluid oil road backflow liquid storage tank 19, the first pressure gauges 8 in the first solenoid directional control valve 9 are designated as zero.It is fixed that motor 2 rotating speeds are required according to the complete machine controller by frequency variator, and it is relatively low to reach energy-conservation purpose in general to start rotating speed.
Secondly, as shown in Figure 3 and Figure 4, pressurize, first measured piece is clipped to test head 18, set the force value of test, begin test, master controller is finished guidance system the sequence of operations such as pressurization, pressure regulation, test and release automatically, adds Medium-voltage Motor automatically to adjust the pressurization rotating speed according to the pressurization demand, if in general the test pressure of tested oil sprayer requirement is high, the pressurization rotating speed is just relatively high, and test pressure is low, and the pressurization rotating speed is also relatively low.Can effectively shorten the whole test time like this, efficient and energy saving are provided.Under the pressurized state, the spool of the first solenoid directional control valve 9 moves to right, and the path that test fluid oil enters test environment is opened, and Hi-pot test this moment liquid oil has been full of the test environment pipeline, and liquid oil flow direction as shown by arrows in FIG..When the test fluid oil pressure surpassed default test pressure value, the first solenoid directional control valve 9 moved to left automatic spool, and this moment, test fluid oil was closed towards the passage of test pipeline, and test oil is back to oil storage pool 19 from return tube.
The 3rd, as shown in Figure 5, carry out pressure regulation, after pressurized state finished, detection system was regulated the pressure regulation state that enters rapidly by control system, adjusted testing tube in-circuit test oil pressure.This moment, motor 2 slowly ran to reduce energy consumption also with the utmost point, provided kinetic energy for Pilot operated check valve 15 simultaneously.The spool of the first solenoid directional control valve 9 continues to move to left, and the pressure regulation branch road is opened.According to default pressure limit, unnecessary test fluid oil will be overflowed through the second solenoid directional control valve 16 by Pilot operated check valve 15 and be back to liquid storage tank 19 from the second relief valve 17.The flow direction of test fluid oil is shown in the direction of arrow among the figure.Through the adjustment of Pilot operated check valve 15, loine pressure is accurately positioned in the required pressure value in the test environment.
The 4th, as shown in Figure 6, carry out the pressurize test, the spool of the first solenoid directional control valve 9 is positioned at the neutral position, the first solenoid directional control valve 9 is in the closed position, one-way valve 10 and Pilot operated check valve 15 are in the complete closed state, and therefore the second solenoid directional control valve 16 and the second relief valve 17 are inoperative, and it is constant that the detection system internal forces keeps.After spraying the detection beginning, internal pressure has descended, and system repeats pressurization and a pressure regulation amount process automatically.During pressurize, the flow direction of test fluid oil is shown in the direction of arrow among the figure in the detection system.Under the pressurize test environment, oil sprayer is with certain dutycycle work, and test fluid is injected in the spray disk, and the discharge orifice at the bottom of spray disk flows into little re-transmission sensor, automatically enters liquid tank and wait to reuse after sensor is weighed.Whether qualified master controller is compared in database after reading each sensing data, then the injection situation is judged to provide conclusion.This state is that a most important link also is a link that directly draws the qualification conclusion in the whole workflow.
The 5th, as shown in Figure 7, carry out release, add Medium-voltage Motor 2 and slowly run to reduce energy consumption with the utmost point this moment, provides kinetic energy for Pilot operated check valve 15 simultaneously.The spool of the first solenoid directional control valve 9 moves to left, the complete conducting of release branch road, and unnecessary test fluid oil will be overflowed by Pilot operated check valve 15, be back to liquid storage tank through the second solenoid directional control valve 16 from the second relief valve 17.Test fluid oil flow direction is shown in the direction of arrow among the figure, and the effect of unloading press operation is to reduce the test environment internal pressure, and tested components and parts for convenience detach reduce operational danger.
At last, as shown in Figure 8, the detection system standby, after unloading press operation, system need automatically enter a standby environment so that next time test operation can start rapidly.Master controller is adjusted into the standby low-power consumption mode with test system.This moment, the motor 2 of oil pump 3 was oily with the idling pump, and it is fixed that motor 3 rotating speeds are required according to the detection system controller by frequency variator, and lower rotating speed is conducive to energy-conservation.Test enters the test pipeline with oil through inlet port filter 5 and oil pump 3.At this moment, the first relief valve 7 is in the not overflow of aperture minimum state, and test fluid oil is road backflow liquid storage tank in the first solenoid directional control valve 9, and the first pressure gauge 2 is designated as zero.As need not for a long time the use test system, can directly cut off the power supply for shutting down gets final product.At this moment, test fluid oil direction is shown in the direction of arrow among the figure.
Claims (7)
1. the detection system of a spraying angle of engine oil sprayer, comprise pressure source, described pressure source comprises fuel tank and by motor-driven oil pump, described oil pump is connected setting with fuel tank, it is characterized in that: described oil pump is connected with test head by pipeline, described test head is used for installing the oil nozzle of test specimen, be respectively equipped with the first solenoid directional control valve and one-way valve by oil pump to test head direction on the pipeline that both are communicated with, be provided with the first relief valve by branch line on described the first solenoid directional control valve and the pipeline that oil pump is communicated with, the first solenoid directional control valve is connected setting by pipeline with pressure relay, the pipeline that both connect is provided with Pilot operated check valve, described Pilot operated check valve is communicated with the second solenoid directional control valve by pipeline, described pressure relay is provided with the pipeline that Pilot operated check valve is communicated with and is connected branch line, the pipeline connection that the described connection branch line the other end is communicated with test head and one-way valve, described the second solenoid directional control valve is provided with the second relief valve, the second relief valve is provided with liquid storage tank away from an end of the second solenoid directional control valve, described test head below arranges spray disk and little re-transmission sensor
Also comprising containing utilizes spray disk and little re-transmission sensor to detect the control system that the quality that is ejected into spray disk different radii donut build-in test liquid is judged the software algorithm of oil sprayer spray regime and spray angle.
2. the detection system of spraying angle of engine oil sprayer according to claim 1, it is characterized in that: the pipeline that described the first solenoid directional control valve is communicated with oil pump is provided with the first pressure gauge, and described pressure relay, Pilot operated check valve and the connection branch line three place of being connected are provided with the second pressure gauge.
3. the detection system of spraying angle of engine oil sprayer according to claim 1, it is characterized in that: described the first solenoid directional control valve is the 3-position 4-way solenoid directional control valve, described the second solenoid directional control valve is two four-way electromagnetic reversing valves.
4. the detection system of spraying angle of engine oil sprayer according to claim 1 is characterized in that: the pipeline that is communicated with between described oil pump and the fuel tank is provided with the inlet port filter, and described fuel tank is provided with thermometer and level meter.
5. the detection system of spraying angle of engine oil sprayer according to claim 1 is characterized in that: be provided with accumulator by branch line on described one-way valve and the pipeline that test head is communicated with.
6. the detecting method of a spraying angle of engine oil sprayer is characterized in that may further comprise the steps:
(1) oil nozzle with test specimen is fixedly mounted on the test head, and sealing to whether there being air in the measured piece detects, if there is air in the measured piece, utilizes test oil that measured piece is washed and carries out exhaust;
(2) set up pressure difference in the sealing both ends of measured piece, pressure difference is set according to actual conditions;
(3) test system is carried out self check, open test system, the oil nozzle of measured piece sprays, to keep the pressure difference environment constant in the course of injection, get spray disk the test fluid of spraying is all received, and lower letting out to little re-transmission sensor carry out quality testing, utilization comprises the control system of software algorithm and processes little re-transmission sensor data, by comparing and calculating liquid quality in each spray disk annulus, draw oil sprayer spray angle data.
7. the detecting method of spraying angle of engine oil sprayer according to claim 6, it is characterized in that: described test system is provided with automatic ventilating function, start automatic ventilating function after, the air in the measured piece is excluded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110284277 CN102297066B (en) | 2011-09-22 | 2011-09-22 | System and method for detecting spraying angle of engine oil sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110284277 CN102297066B (en) | 2011-09-22 | 2011-09-22 | System and method for detecting spraying angle of engine oil sprayer |
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| CN102297066A CN102297066A (en) | 2011-12-28 |
| CN102297066B true CN102297066B (en) | 2013-03-13 |
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| CN 201110284277 Expired - Fee Related CN102297066B (en) | 2011-09-22 | 2011-09-22 | System and method for detecting spraying angle of engine oil sprayer |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759623B (en) * | 2011-12-29 | 2016-05-18 | 安徽华茂纺织股份有限公司 | A kind of benchmark spray angle detector of Features of Auxiliary Nozzle on Air-jet loom |
| CN104028490B (en) * | 2014-05-09 | 2016-02-17 | 柳工无锡路面机械有限公司 | For the method and apparatus of the intelligent bituminous cleaning of multifunctional spreading machine and oiling |
| CN111120173B (en) * | 2019-12-31 | 2021-01-15 | 吉利汽车研究院（宁波）有限公司 | High-pressure oil pump fault detection system, high-pressure oil pump fault detection method and vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2854114Y (en) * | 2005-10-01 | 2007-01-03 | 扬动股份有限公司 | Nozzle pressure and spray angle testing device |
| CN101285444A (en) * | 2007-04-11 | 2008-10-15 | 上海电机学院 | Diesel oil pump fuel injection amount measurement method |
| CN101571090B (en) * | 2009-06-04 | 2010-09-08 | 北京航空航天大学 | Fuel injection rule measuring device of diesel engine and measuring method thereof |
| ITMI20091384A1 (en) * | 2009-07-31 | 2011-02-01 | Ansaldo Energia Spa | METHOD AND DEVICE FOR MEASURING THE FLOW OF A FLUID, PREFERABLY OF A LAUNCH OF A BURNER OF A GAS TURBINE PLANT |
| CN202209242U (en) * | 2011-09-22 | 2012-05-02 | 温州大学 | Detection system for injection angle of fuel injector of engine |
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