CN202453175U - Detection system for simulating internal combustion engine environment test fuel injector injection liquid flow distribution - Google Patents
Detection system for simulating internal combustion engine environment test fuel injector injection liquid flow distribution Download PDFInfo
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- CN202453175U CN202453175U CN201120429876XU CN201120429876U CN202453175U CN 202453175 U CN202453175 U CN 202453175U CN 201120429876X U CN201120429876X U CN 201120429876XU CN 201120429876 U CN201120429876 U CN 201120429876U CN 202453175 U CN202453175 U CN 202453175U
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- fuel injector
- pressure
- flow distribution
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- combustion engine
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Abstract
The present utility model discloses a detection system for simulating internal combustion engine environment test fuel injector injection liquid flow distribution. The detection system comprises at least a pressure source or a pressure supply system; a master control system; an air pressurization system for providing a working environment simulating a tested component; a pressure adjusting system for precisely adjusting the pressure difference environment required by the tested component, and further approaching the working pressure environment of the tested component; a pressure maintaining and testing system which is used for judging the working status of a fuel injector through using a spray weighing system to detect quality of tested liquid spraying to different areas in the pressure maintaining environment; and a spray weighing system which is composed of an oil collecting tray, an oil cutting-off tray and a weighing instrument, the weighing instrument is arranged below the oil cutting-off tray, and the oil cutting-off tray is arranged below the oil collecting tray. The operation of detecting fuel spray nozzle injection flow distribution is simple, and the precision is high.
Description
Technical field
The utility model relates to a kind of method that detects the atomizing of liquids distributed weight of utilizing fuel injector atomizing of liquids flow distribution is carried out the accurate system that detects.
Background technology
Atomizer is most important as far as the work efficiency of internal combustion engine, but the detection that distributes for the atomizer injection flow mainly stops the qualitative manual observation stage, exists defectives such as performance accuracy is low.Though also there are detection methods such as gas survey method now, this method is affected by environment big, and operation is complicated, so just is difficult to satisfy the requirement of the injection accuracy that present engine improves atomizer day by day.
The utility model content
The purpose of the utility model is exactly not enough to existing in prior technology, provides a kind of simple to operate, the system that the atomizer injection flow that accuracy of detection is high distributes.
To achieve these goals, the utility model is realized through following technical scheme:
The detection system of simulation internal combustion engine environmental testing fuel injector atomizing of liquids flow distribution,
Comprise at least one pressure source or pressure feed system;
One general control system;
One provides the compression system of the working environment of simulation element to be tested;
One can accurately adjust element required pressure difference ring to be tested border, further approaches the voltage-regulating system of the working pressure environment of element to be tested;
One under the pressurize environment, and the quality that is ejected into zones of different through spraying Weighing system checkout liquid is judged the pressurize test macro of the working condition of fuel injector with this;
One spraying Weighing system, described spraying Weighing system is made up of a draw-off tray, oil-break dish, weighing instrument, and weighing instrument is positioned under the oil-break dish, and the oil-break dish is positioned under the draw-off tray;
Described compression system is connected with pressure regulator valve through accumulator switch and water-separating gas filter by first accumulator; And the intermediate connection source of the gas mouth of accumulator switch and water-separating gas filter; Pressure regulator valve is connected with the oil sprayer and first solenoid directional control valve; The connecting pipe of pressure regulator valve and oil sprayer is provided with first rain glass, and first solenoid directional control valve communicates respectively with the upper and lower side of cylinder through the one-way throttle valve of two branches, and cylinder is connected with the connecting rod of operating cylinder;
Described voltage-regulating system is communicated respectively with the upper and lower side of cylinder by the one-way throttle valve of first solenoid directional control valve through two branches, and cylinder is connected with the connecting rod of operating cylinder; The lower end bifurcation of operating cylinder, one links to each other with second accumulator through retaining valve, and the while is connected with tensimeter and pressure transducer; Another is communicated with fuel tank through retaining valve and inlet port filtrator;
Second accumulator is communicated with fuel injector through second solenoid directional control valve, is draw-off tray under the fuel injector, is fuel tank under the weighing instrument.
The source of the gas that the pressure source system carries is connected with frequency converter, and frequency converter is connected with the complete machine master controller through USB interface, and the source of the gas that described pressure source is carried by monitor station obtains or close the accumulator switch by extraneous cut-in pressure source the time to obtain.
Described draw-off tray and surface level have an inclination angle.
Second accumulator and pressure transducer and fuel injector are connected to same node, and pressure transducer is connected with the complete machine controller through the RS232 interface.
Weighing instrument is connected with the complete machine controller through the RS232 interface.
The first solenoid directional control valve upper and lower side with the conducting of moving up and down is communicated with the upper and lower of cylinder through the gas conduit of being made up of two one-way throttle valves up and down respectively.
The beneficial effect of the utility model: detection atomizer injection flow distributed operation is simple, precision is high.
Description of drawings
The principle assumption diagram of Fig. 1, the utility model.
Embodiment
A kind of simulation is under real internal combustion engine environment, and the detection system of test fuel injector atomizing of liquids flow distribution comprises at least one pressure source or pressure feed system; A general control system; A compression system, the effect of compression system provide the working environment of a simulation element to be tested; A voltage-regulating system, voltage-regulating system can accurately be adjusted element required pressure difference ring to be tested border, further approach the working pressure environment of element to be tested; A pressurize test macro, pressurize test macro are the cores of whole measuring method for testing, under the pressurize environment, judge the fuel injector working condition through the mass distribution of spraying Weighing system checkout liquid ejection area with this.
Described spraying Weighing system is made up of the position relation under during draw-off tray 17, oil-break dish 18, weighing instrument are more than 19, and described draw-off tray 17 has designed an inclination angle so that liquid flows to weighing instrument 19 especially for reaching reasonable acceptable effect.
1 acquisition of source of the gas mouth that described pressure source can be carried by monitor station, source of the gas mouth 1 is connected with frequency converter, and frequency converter is connected with the complete machine master controller through USB interface.Requirement obtains the workload of source of the gas 1 according to the complete machine controller by frequency converter.Close 2 acquisitions of accumulator switch in the time of also can be by extraneous cut-in pressure source.
Described compression system is made up of water-separating gas filter 4, pressure regulator valve 5, rain glass 6, oil sprayer 7, first solenoid directional control valve 8, one-way throttle valve 9, cylinder 10, fuel tank 22, suction inlet filtrator 21, retaining valve 20, operating cylinder 11 and plurality of pipelines etc.Wherein solenoid directional control valve 8 is main gas flow control gear with retaining valve 9, and pressure regulator valve 5 is used for the air pressure control in the pipeline with rain glass 6, and cylinder is connected with operating cylinder through push rod.
Described voltage-regulating system is made up of solenoid directional control valve 8, second solenoid directional control valve 15, one-way throttle valve 9, retaining valve 20, second accumulator 12, pressure transducer 14, tensimeter 13, cylinder 10, oil cylinder 11 and plurality of pipelines etc.Wherein with shared one first solenoid directional control valve 8 of compression system and plurality of pipelines etc.; Second accumulator 12, pressure transducer 14 and second solenoid directional control valve 15 are connected to same node.
Described pressurize test macro is made up of pressure transducer 14, second accumulator 12, retaining valve 20, second solenoid directional control valve 15, fuel injector 16, observable tensimeter 13 etc.Wherein under packing state, retaining valve 20, second accumulator 12, pressure transducer 14 and atomizer 16 have been formed the space of a sealing.
Described pressure relief system is made up of with oil cylinder 11 and plurality of pipelines etc. solenoid directional control valve 8, second solenoid directional control valve 15, cylinder 10.
Said general control system is by master controller (containing display), communication bus and formations such as interface circuit, gravity sensor and digital display instrument and electronic control unit; Master controller includes software algorithm, can read quality that is distributed in each regional test liquid and the working condition of analyzing tested atomizer fast.Simultaneously, controller is coordinated rapid, the accurately effect of work of each system in addition.The inner various sensors of each subsystem are connected with master controller through interface circuit with electronic control unit.
The detection method of the utility model is following:
The test philosophy of the utility model is to utilize to detect the flow distribution that the quality that is ejected into draw-off tray different radii donut build-in test liquid is judged the atomizer atomizing of liquids.
After the first step was installed in fixed head with atomizer to be tested, pressure liquid sleeve detected the back and descends automatically, and sleeve compresses atomizer and accomplishes automatic the clamping.If element internal to be tested has a lot of air, also need launch the automatic vent function, reach the effect of discharge internal gas through the flushing of test oil.
Second step was set up certain pressure difference with the two ends that components and parts to be tested need seal, and this pressure difference can be adjusted in certain limit as required.
The 3rd step opened atomizer and sprays, and it is excessive to keep the pressure difference environment not change in the course of injection.Draw-off tray can with the test fluid of spraying all receive and under let out to weighing instrument and carry out quality testing, weighing instrument feeds back to the complete machine controller with data.Master controller is through to the comparison and the calculating of liquid quality in each draw-off tray annulus, draws the data of atomizer atomizing of liquids flow distribution and its working condition is analyzed.
1. startup test phase
Energized, at this moment, solenoid directional control valve 8 is in off position, and solenoid directional control valve 15 is in the no power state.Start complete machine simultaneously, the complete machine controller will detect total system, if the no abnormal start-up routine that then gets into of each system.System connects source of the gas, opens switch 2 simultaneously.Air pump is started working, and the workload of air pump is decided according to the requirement of complete machine controller by frequency converter.If external source of the gas is then wanted off switch 2 and air pump power supply.
2. pressurized operation state
Just get into the pressurized operation state after the system start-up.Pressurized state is a steps necessary of test process, and this process provides the working environment of a simulation element to be tested.When this state of entering, source of the gas is adjusted workload automatically by the complete machine controller, adjusts reduction valve 5 simultaneously, and gas gets into cylinder 10 bottoms through the one-way throttle valve 9 of water-separating gas filter 4, pressure regulator valve 5, oil sprayer 7, first solenoid directional control valve 8 and below.In this process, rain glass 6 will show the atmospheric pressure value in this pipeline.Simultaneously, the air pressure of cylinder 10 bottoms increases, and make on the dividing plate of cylinder 10 to move, and the dividing plate that drives operating cylinder 11 moves on also, causes the air pressure of operating cylinder 11 bottoms to reduce and is lower than atmospheric pressure.Under atmospheric effect, the test oil in the fuel tank 22 is through the bottom of inlet port filtrator 21, retaining valve 20 entering operating cylinders 11, the oil suction link of the operating cylinder of completion.
3. pressure regulation duty
After pressurized state finished, system got into the pressure regulation duty.Fuel injector 16 is installed to appointed positions this moment, and is started digital display instrument (digital indicator).At this moment, second solenoid directional control valve 15 is in logical oil condition, simultaneously, moves on first solenoid directional control valve 8, and gas is through the top of the one-way throttle valve 9 entering cylinders 10 of top, and the air pressure on cylinder 10 tops increases, and through connecting rod is exerted pressure in the bottom of operating cylinder 11.Test oil gets into second accumulator 12 through retaining valve 20 part of turning right, and a part arrives fuel injectors 16 through second Elactro magnetic commutator 15.Pressure transducer 14 is started working simultaneously, and tensimeter 13 and digital display instrument begin to show the accurate pressure value simultaneously, so that get into next test environment.
4. pressurize test mode
When treating that force value reaches setting value, controller control fuel injector 16 carries out the oil spout action, gets into the pressurize test mode this moment.This state is that a most important link also is the link that directly obtains the fuel injector duty in the whole process.This moment retaining valve 20 complete closed, it is constant that pressure inside keeps, the test oil in second accumulator 12 flow to fuel injector 16 through second solenoid directional control valves 15.When pressure inside descended to some extent, system repeated pressurization, pressure regulation process automatically, ensured that pressure inside is stabilized in pressure set points.In this environment, test oil is ejected into draw-off tray 17 through fuel injector 16, flows into weighing instrument 19 through oil-break dish 18.At this moment; The beginning testing button of pressing digital display instrument carries out timing; When reaching setting-up time, fuel injector stops oil spout automatically, and oil-break dish 18 breaks off with draw-off tray 17 simultaneously; The oil mass of 6 oil grooves shows relevant numerical on digital display instrument after weighing instrument 19 weighings, and offer the analysis that controller carries out working condition through LOAD CELLS with the RS232 data port.
5. pressure release state
After test finishes; First solenoid directional control valve 8 moves down, move on the dividing plate of cylinder 10, operating cylinder 11 from fuel tank 22 through inlet port filtrator 21, retaining valve 20 oil suctions; Solenoid directional control valve 15 breaks off oil circuit simultaneously; Pressure venting in the enclosure space that second accumulator 12, second solenoid directional control valve 15 and retaining valve 20 are formed so that unload fuel injector 16, reduces operational hazards.
6. holding state
After the pressure release operation was accomplished, system got into next holding state automatically and accomplishes the pressurized state in the next working cycle, so that next operation can be carried out fast.Simultaneously, total system gets into energy saver mode, and 6 on the digital display instrument show the numerical value zero clearing.
Claims (6)
1. the detection system of simulation internal combustion engine environmental testing fuel injector atomizing of liquids flow distribution is characterized in that,
Comprise at least one pressure source or pressure feed system;
One general control system;
One provides the compression system of the working environment of simulation element to be tested;
One can accurately adjust element required pressure difference ring to be tested border, further approaches the voltage-regulating system of the working pressure environment of element to be tested;
One under the pressurize environment, and the quality that is ejected into zones of different through spraying Weighing system checkout liquid is judged the pressurize test macro of the working condition of fuel injector with this;
One spraying Weighing system, described spraying Weighing system is made up of a draw-off tray (17), oil-break dish (18), weighing instrument (19), and weighing instrument (19) is positioned under the oil-break dish (18), and oil-break dish (18) is positioned under the draw-off tray (17);
Described compression system is connected with pressure regulator valve (5) through accumulator switch (2) and water-separating gas filter (4) by first accumulator (3); And the intermediate connection source of the gas mouth (1) of accumulator switch (2) and water-separating gas filter (4); Pressure regulator valve (5) is connected with oil sprayer (7) and first solenoid directional control valve (8); Pressure regulator valve (5) is provided with first rain glass (6) with the connecting pipe of oil sprayer (7); First solenoid directional control valve (8) communicates respectively with the upper and lower side of cylinder (10) through the one-way throttle valve (9) of two branches, and cylinder (10) is connected with the connecting rod of operating cylinder (11);
Described voltage-regulating system is communicated respectively with the upper and lower side of cylinder (10) by the one-way throttle valve (9) of first solenoid directional control valve (8) through two branches, and cylinder (10) is connected with the connecting rod of operating cylinder (11); The lower end bifurcation of operating cylinder (11), one links to each other with second accumulator (12) through retaining valve (20), and the while is connected with tensimeter (13) and pressure transducer (14); Another is communicated with fuel tank (22) through retaining valve (20) and inlet port filtrator (21);
Second accumulator (12) is communicated with fuel injector (16) through second solenoid directional control valve (15), is draw-off tray (17) under the fuel injector (16), is fuel tank (22) under the weighing instrument (19).
2. the detection system of simulation internal combustion engine environmental testing fuel injector atomizing of liquids flow distribution according to claim 1 is characterized in that,
The source of the gas that the pressure source system carries is connected with frequency converter, and frequency converter is connected with the complete machine master controller through USB interface.
3. the detection system of simulation internal combustion engine environmental testing fuel injector atomizing of liquids flow distribution according to claim 1 is characterized in that described draw-off tray and surface level have an inclination angle.
4. the detection system of simulation internal combustion engine environmental testing fuel injector atomizing of liquids flow distribution according to claim 1; It is characterized in that; Second accumulator (12) is connected to same node with pressure transducer (14) and fuel injector (16), and pressure transducer (14) is connected with the complete machine controller through the RS232 interface.
5. the detection system of simulation internal combustion engine environmental testing fuel injector atomizing of liquids flow distribution according to claim 1 is characterized in that weighing instrument (19) is connected with the complete machine controller through the RS232 interface.
6. according to the detection system of the described simulation internal combustion engine of any claim of claim 1-5 environmental testing fuel injector atomizing of liquids flow distribution; It is characterized in that first solenoid directional control valve (8) upper and lower side with the conducting of moving up and down is communicated with the upper and lower of cylinder (10) through the gas conduit of being made up of two one-way throttle valves (9) up and down respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120429876XU CN202453175U (en) | 2011-11-03 | 2011-11-03 | Detection system for simulating internal combustion engine environment test fuel injector injection liquid flow distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120429876XU CN202453175U (en) | 2011-11-03 | 2011-11-03 | Detection system for simulating internal combustion engine environment test fuel injector injection liquid flow distribution |
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| Publication Number | Publication Date |
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| CN202453175U true CN202453175U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120429876XU Expired - Fee Related CN202453175U (en) | 2011-11-03 | 2011-11-03 | Detection system for simulating internal combustion engine environment test fuel injector injection liquid flow distribution |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469290A (en) * | 2018-03-29 | 2018-08-31 | 淮阴师范学院 | A kind of injection of micro fluid and quality indicator controller |
| CN108763838A (en) * | 2018-07-18 | 2018-11-06 | 无锡威孚高科技集团股份有限公司 | A kind of selection method, the apparatus and system of fuel injector adjust pad |
| CN112412927A (en) * | 2020-10-27 | 2021-02-26 | 温州大学 | Hydraulic element impact fatigue test bench |
-
2011
- 2011-11-03 CN CN201120429876XU patent/CN202453175U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469290A (en) * | 2018-03-29 | 2018-08-31 | 淮阴师范学院 | A kind of injection of micro fluid and quality indicator controller |
| CN108469290B (en) * | 2018-03-29 | 2019-12-10 | 淮阴师范学院 | Micro-fluid injection and quality check controller |
| CN108763838A (en) * | 2018-07-18 | 2018-11-06 | 无锡威孚高科技集团股份有限公司 | A kind of selection method, the apparatus and system of fuel injector adjust pad |
| CN112412927A (en) * | 2020-10-27 | 2021-02-26 | 温州大学 | Hydraulic element impact fatigue test bench |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20131103 |