CN103967678A - Count method for engine oil atomizer endurance test - Google Patents
Count method for engine oil atomizer endurance test Download PDFInfo
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- CN103967678A CN103967678A CN201410196260.0A CN201410196260A CN103967678A CN 103967678 A CN103967678 A CN 103967678A CN 201410196260 A CN201410196260 A CN 201410196260A CN 103967678 A CN103967678 A CN 103967678A
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- oil sprayer
- counting
- durability test
- fuel injector
- engine fuel
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Abstract
The invention discloses a count method for an engine oil atomizer endurance test. The count method comprises the following steps that an acceleration sensor is arranged on an oil atomizer, the oil atomizer is in rigid connection with the acceleration sensor, vibration signals in the start process of the oil atomizer are sensed by the acceleration sensor and transmitted to a control unit of a test system, and the number of times of the vibration signals is monitored and counted so that the atomization processes of the oil atomizer can be counted. A test method can directly and accurately count the number of times of atomization, measurement is accurate, the method is easy to implement, and operation is easy.
Description
Technical field
The present invention relates to a kind of test and method of measurement, particularly relate to the method for measurement of the oil sprayer injecting times in engine fuel injector durability test.
Background technique
In existing engine fuel injector durability test, conventionally adopt the method for indirectly counting to add up the injecting times of tested oil sprayer.The foundation that the quantity of control command that counting sends by statistics control unit indirectly or the energising number of times of oil sprayer are used as measuring oil sprayer injecting times.Actual conditions are, are about at the end when sporadic abnormal or durability test appears in system, and control unit has sent control command or system is that oil sprayer completes power supply, but injection action does not occur oil sprayer; Now, adopt above injecting times method of measurement to have counting problem bigger than normal.In the disclosed engine fuel oil system durability test device of Chinese patent CN100455790C, the quantity of the control command by record control unit is added up injecting times.The disclosed automobile spray emulator endurance test device of Chinese patent CN101787947A, carrys out metered injection number of times by the break-make number of times that records contactor in drive system.Practical experience shows, above these methods all can produce counting inaccurate problem, the especially injecting times important indicator as durability test in actual mechanical process, be starved of as it injecting times method of measurement is accurately provided.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of method of counting of accurate, direct engine fuel injector durability test is provided.By monitoring and statistics to oscillating signal in oil sprayer opening process, calculate on this basis on the one hand the injecting times of oil sprayer, the important criterion ending as durability test on the other hand.
Technological scheme of the present invention is as follows:
A method of counting for engine fuel injector durability test, placement sensor on oil sprayer; Sensor is experienced the oscillating signal in oil sprayer opening process and is transferred to test bench control system; Realize the counting of oil sprayer course of injection by monitoring and add up the number of times of this oscillating signal.
Its further technological scheme is: the sensor of described monitoring vibration signal is acceleration transducer.
Its further technological scheme is: being connected between described oil sprayer and sensor is rigidly connected.Described acceleration transducer is fixed on oil sprayer by rigidity; Or, described sensor be fixed on the rigidly connected fixture of oil sprayer on.
Its further technological scheme is: it is corresponding one by one with the time that oil sprayer is opened the number of times occurring with oscillating signal.
Its further technological scheme is: when test bench control system sends oil sprayer open command to and sensor when oscillating signal do not detected, durability test finishes.
Useful technique effect of the present invention is:
The present invention is furnished with acceleration transducer on oil sprayer, and acceleration transducer is used for the breakdown action of oil sprayer to monitor.Oil sprayer all can produce obvious vibration in each opening process, and the accelerated degree sensor collection of these oscillating signals also sends test control system to for the number of times of oil sprayer unlatching is counted.The opening process of the corresponding oil sprayer of each oscillating signal, oil sprayer close after this oscillating signal disappear immediately.The number of times of monitoring and record oscillating signal appearance can be realized the direct measurement of oil sprayer opening times, and it is corresponding one by one with the time that oil sprayer is opened the number of times occurring with oscillating signal, and method of measurement is accurate.When control system sends oil sprayer open command to and acceleration transducer when oscillating signal do not detected, oil sprayer likely breaks down, and durability test finishes.Use this method to measure the opening times of oil sprayer, counting accurately; And, be conducive to find early oil sprayer fault, can be used as the important criterion that oil sprayer durability test finishes.
Brief description of the drawings
Fig. 1 is that in the present invention, test system structure is arranged sketch.
Fig. 2 is test signal figure of the present invention.
Fig. 3 is the flow chart that sprays counting in durability test.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
In Fig. 1, provide in schematic form the system composition of engine fuel injector durability test of the present invention, comprising: tested oil sprayer, test bench hydraulic systems, acceleration transducer and test control system etc.In actual mechanical process, on every tested oil sprayer, all arrange an acceleration transducer.Acceleration transducer by rigidity be fixed on oil sprayer or with the rigidly connected fixture of oil sprayer on.
Test bench hydraulic systems provides required test condition for tested oil sprayer, as fuel oil, pressure etc., and under the acting in conjunction of pressure transducer and a series of final controlling element, guarantee test condition accurately with stable.Tested oil sprayer is carried out and is sprayed order under the control of test control system, and under non-failure conditions, corresponding each control command all can complete once sprays; And in the injection opening process of oil sprayer, the athletic meeting of oil sprayer internal motion part produces significant vibration, this oscillating signal can be measured with the rigidly connected acceleration transducer of oil sprayer, and test result is transferred to test control system.Injection control command and oil sprayer spray oscillating signal and schematically see in Fig. 2.Under non-failure conditions, the oscillating signal that injection control command senses with acceleration transducer is corresponding one by one.These signals that are transferred to test control system, through processing, are used as the counting of injecting times according to recording, and its computing flow process is shown in Fig. 3.The oscillating signal of recording is on the one hand as the counting unit of oil sprayer injecting times, and for adding up the injecting times of oil sprayer, this injecting times is the important performance assessment criteria of oil sprayer endurance test; The oscillating signal detecting in real time is on the other hand sent in test control system compared with quantity and the time of control command, the important criterion ending as durability test.Once test control system is found oscillating signal and is lost, and can judge that losing efficacy appears in oil sprayer, thereby thinks that durability test finishes and records oil sprayer injecting times.
Use this method to count engine fuel injector durability test, accurate measurement, reliability is high.
The method of counting of durability test of the present invention also can be used for the test of other solenoid valves etc.
According to the difference of oil sprayer or other solenoid valves layout and acceleration transducer model, can regulate mounting point and the mounting type of acceleration transducer, as being arranged on measured article or on fixture rigidly connected with it by degree of will speed up sensor, its mounting type also can adopt magnetic base absorption or glue to adhere to or screw thread fixing etc.
In sum, adopt the method for counting of engine fuel injector durability test of the present invention, can realize the direct measurement of oil sprayer opening times, test method accurately, reliably.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive or associate without departing from the spirit and concept in the present invention, within all should thinking and being included in protection scope of the present invention.
Claims (7)
1. a method of counting for engine fuel injector durability test, is characterized in that: placement sensor on oil sprayer; Sensor is experienced the oscillating signal in oil sprayer opening process and is transferred to test bench control system; Realize the counting of oil sprayer course of injection by monitoring and add up the number of times of this oscillating signal.
2. the method for counting of engine fuel injector durability test according to claim 1, is characterized in that: the sensor of described monitoring vibration signal is acceleration transducer.
3. the method for counting of engine fuel injector durability test according to claim 1, is characterized in that: being connected between described oil sprayer and sensor is rigidly connected.
4. the method for counting of engine fuel injector durability test according to claim 3, is characterized in that: described acceleration transducer is fixed on oil sprayer by rigidity.
5. the method for counting of engine fuel injector durability test according to claim 3, is characterized in that: described sensor be fixed on the rigidly connected fixture of oil sprayer on.
6. the method for counting of engine fuel injector durability test according to claim 1, is characterized in that: oil sprayer is opened corresponding one by one with the time with the number of times of oscillating signal appearance.
7. the method for counting of engine fuel injector durability test according to claim 1, is characterized in that: when test bench control system sends oil sprayer open command to and sensor when oscillating signal do not detected, durability test finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410196260.0A CN103967678A (en) | 2014-05-09 | 2014-05-09 | Count method for engine oil atomizer endurance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410196260.0A CN103967678A (en) | 2014-05-09 | 2014-05-09 | Count method for engine oil atomizer endurance test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103967678A true CN103967678A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410196260.0A Pending CN103967678A (en) | 2014-05-09 | 2014-05-09 | Count method for engine oil atomizer endurance test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632490A (en) * | 2015-01-20 | 2015-05-20 | 瑞安市质量技术监督检测院 | Gasoline engine low-pressure electromagnetic valve type fuel injector performance detecting system |
| GB2573522A (en) * | 2018-05-08 | 2019-11-13 | Delphi Tech Ip Ltd | Method of identifying faults in the operation of hydraulic fuel injectors having accelerometers |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102181A (en) * | 1975-12-23 | 1978-07-25 | Autoipari Kutato Intezet | Procedure for determining the starting point of fuel injection especially for running internal-combustion engines |
| DE19801640C1 (en) * | 1998-01-17 | 1999-04-22 | Wtz Motoren & Maschforsch Gmbh | Test rig for fuel injection valve |
| CN202274991U (en) * | 2011-09-08 | 2012-06-13 | 浙江九隆机械有限公司 | Test device for brake |
| CN203162323U (en) * | 2013-04-18 | 2013-08-28 | 浙江赛杰电器有限公司 | Electromagnetic valve |
-
2014
- 2014-05-09 CN CN201410196260.0A patent/CN103967678A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102181A (en) * | 1975-12-23 | 1978-07-25 | Autoipari Kutato Intezet | Procedure for determining the starting point of fuel injection especially for running internal-combustion engines |
| DE19801640C1 (en) * | 1998-01-17 | 1999-04-22 | Wtz Motoren & Maschforsch Gmbh | Test rig for fuel injection valve |
| CN202274991U (en) * | 2011-09-08 | 2012-06-13 | 浙江九隆机械有限公司 | Test device for brake |
| CN203162323U (en) * | 2013-04-18 | 2013-08-28 | 浙江赛杰电器有限公司 | Electromagnetic valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632490A (en) * | 2015-01-20 | 2015-05-20 | 瑞安市质量技术监督检测院 | Gasoline engine low-pressure electromagnetic valve type fuel injector performance detecting system |
| GB2573522A (en) * | 2018-05-08 | 2019-11-13 | Delphi Tech Ip Ltd | Method of identifying faults in the operation of hydraulic fuel injectors having accelerometers |
| GB2573522B (en) * | 2018-05-08 | 2020-08-19 | Delphi Tech Ip Ltd | Method of identifying faults in the operation of hydraulic fuel injectors having accelerometers |
| US11639696B2 (en) | 2018-05-08 | 2023-05-02 | Delphi Technologies Ip Limited | Method of identifying faults in the operation of hydraulic fuel injectors having accelerometers |
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Application publication date: 20140806 |