CN101285444A - Diesel oil pump fuel injection amount measurement method - Google Patents
Diesel oil pump fuel injection amount measurement method Download PDFInfo
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- CN101285444A CN101285444A CNA2007100393547A CN200710039354A CN101285444A CN 101285444 A CN101285444 A CN 101285444A CN A2007100393547 A CNA2007100393547 A CN A2007100393547A CN 200710039354 A CN200710039354 A CN 200710039354A CN 101285444 A CN101285444 A CN 101285444A
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Abstract
The invention provides a method for measuring the fuel charge of a lubropump of a diesel engine, comprising the following steps that: a pressure sensor, an A/D converter, a PLC controller, a computer and a display are connected in sequence to form a measuring device; each fuel charge measuring cup on a testing bench is provided with a pressure sensor for measuring a weight signal of the fuel charge inside the measuring cup, the weight signal is converted into an electric current signal of between 4 and 20 mA, the electric signal is conveyed to the A/D converter by a signal screening wire; the A/D converter converts the electric current into a digital signal and sends the digital signal to the PLC controller; an fuzzy neural network (FNN) processing program is stored inside the PLC controller and can perform the FNN processing and the digital filtering processing to the digital signal; and the processed digital signal is converted into a fuel charge signal which is sent to the computer and the display through a PC/PPI cable; the computer is used to process the signal, and the display is used to display the measuring result. The method evidently improves the measuring accuracy of the fuel charge of the lubropump of the diesel engine, automatically displays measured data, prints the measured results, and improves the maintenance quality and efficiency.
Description
[technical field]
The present invention relates to the method for measurement of diesel oil pump fuel injection amount, especially a kind of is that the oil pump of power carries out the method that fuel injection quantity is measured at test stand with the diesel engine to automobile, boats and ships, farm machinery etc.
[background technique]
Measurement is a job often will doing in automobile, boats and ships, the agricultural machinery M R to diesel oil pump fuel injection amount, also is the important process that the diesel engine performance is detected.At present, domestic measurement to automobile, boats and ships, agricultural machinery diesel oil pump fuel injection amount is measured by manual measurement, volumetry and capacitance method.Adopt the manual measurement method to measure, be after starting measuring test-bed, the oil mass of the several oil cylinders of diesel engine is injected in the teat glass that indicates scale, behind the oil spout number of times that reaches regulation, measuring test-bed stops oil mass automatically and sprays into, and judges what of oil cylinder fuel injection quantity by the scale on the manual observation teat glass then.Because the randomness and the narrow limitation of manual observation, can there be bigger error in this kind measurement result.Adopt volumetry and capacitance method to measure, Temperature Influence is big, its less stable because these two kinds of methods are subjected to, and measuring accuracy is affected.
Abroad, advanced country adopts high-precision flow sensor that the fuel injection quantity of jerk pump is measured more, for example company of German Bosch just adopts high-precision flow sensor to measure, its measuring accuracy is very high, but, its equipment price is also very expensive, the apparatus value more than 100 ten thousand of a high-precision flow sensor.Because equipment is too accurate, will occur phenomenon of blocking easily when the bad jerk pump of oil is not good at, is used in old, old, maintenance measuring, and in a single day equipment break down, maintenance is trouble very.
[summary of the invention]
The objective of the invention is to overcome the deficiencies in the prior art, provide that a kind of equipment price is cheap, measuring accuracy is high, can show the oil mass of measurement automatically, and can print the method for measurement of the diesel oil pump fuel injection amount of measurement result at any time.
The technical characteristics of the method for measurement of diesel oil pump fuel injection amount of the present invention is: connect to form measuring equipment successively by pressure transducer, A/D converter, PLC controller, computer and display device; Setting pressure sensor on each oil measurement cup of measuring test-bed, be used for the weight signal of oil mass in the measuring cup, convert weight signal the current signal of 4-20mA to by pressure transducer then, send current signal to A/D converter by the signal shielding line; A/D converter is connected with the PLC controller, current signal can be converted to digital signal and directly send the PLC controller to; PLC controller internal memory contain fuzzy neural network processor can carry out fuzzy neural network to digital signal and handle and digital filtering, is converted into oil mass signal then and is sent to computer and display device by the PC/PPI cable; By computer signal is handled, shown data or the result who measures by display device.
The good effect of the method for measurement of diesel oil pump fuel injection amount of the present invention is: can significantly improve the precision that diesel oil pump fuel injection amount is measured, the fuel injection quantity that can show measurement automatically, and can print measurement result at any time, eliminated the error of bringing by manual measurement, reduce the labor intensity of survey crew, improved quality and the efficient of maintenance, maintenance; Simultaneously, the measuring equipment of being done according to the present invention has simple in structure, flexible, the easy to use and reliability advantages of higher of control.
[description of drawings]
Accompanying drawing 1 is the hardware block diagram of the method for measurement of diesel oil pump fuel injection amount of the present invention;
Accompanying drawing 2 is FB(flow block)s of oil mass fuzzy neural network algorithm.
Among the figure, 1, pressure transducer, 2, A/D converter, 3, the PLC controller, 4, computer and display screen.
[embodiment]
Referring to accompanying drawing 1.The specific implementation method of the method for measurement of diesel oil pump fuel injection amount of the present invention is: connect to form measuring equipment successively by high-precision pressure sensor 1, A/D converter 2, PLC controller 3, computer and display screen 4.
Pressure transducer 1 can adopt micropressure sensor 1, because the resolution and the stability of micropressure sensor 1 are all good, and the variation that is well suited for being used for measuring small weight.Micropressure sensor 1 can be installed on each oil measurement cup of measuring test-bed, measure the weight signal of oil mass in the measuring cup with micropressure sensor 1, then the weight signal that records is converted to the current signal of 4-20mA, send current signal to A/D converter 2 by the double shield line again.
A/D converter 2 adopts 14 high-precision a/d converter, and it can convert current signal to digital signal and send PLC controller 3 to.
PLC controller 3 internal memory contain fuzzy neural network processors, can carry out fuzzy neural network to digital signal handles and digital filtering, and be converted into oil mass signal, by the fuzzy neural network processor weight signal " gram " is converted to volume signals " milliliter ".
At last, PLC controller 3 is sent to computer and display device 4 by the PC/PPI cable with oil mass signal, the computer here can adopt industrial control computer, utilize its stable performance that oil mass signal is handled, control demonstration, storage or printing etc., show survey data or result in real time by display device, the display device here can adopt the display device of touch-screen type, is convenient to operation.
In the enforcement, highi degree of accuracy micropressure sensor 1 is installed in the bottom of each oil measurement cup of oil pump test platform, makes of rim of a cup to cup the oil spout of the oil nozzle of jerk pump from the oil measurement cup.As measuring test-bed 12 oil measurement cups are arranged, 12 highi degree of accuracy micropressure sensors 1 will be installed, each highi degree of accuracy micropressure sensor 1 usefulness shielded cable is connected on the A/D converter 2.When beginning to measure the fuel injection quantity of jerk pump, highi degree of accuracy micropressure sensor 1 can convert the weight information that injects oil in the oil measurement cup to the 4-20mA current signal at any time and send A/D converter 2 to, A/D converter 2 is to insert PLC controller 3, therefore pass to PLC controller 3 after it can convert current signal to digital signal, after PLC controller 3 carries out filtering and fuzzy neural network processing with digital signal, the accurate oil mass signal that converts to is sent to computer and display device 4 by the PC/PPI cable, carry out signal processing by computer, show data or the result who measures by touch screen.
Claims (3)
1, a kind of method of measurement of diesel oil pump fuel injection amount is characterized in that, connects to form measuring equipment successively by pressure transducer (1), A/D converter (2), PLC controller (3), computer and display device (4); Setting pressure sensor (1) on each oil measurement cup of measuring test-bed, be used for the weight signal of oil mass in the measuring cup, convert weight signal the current signal of 4-20mA to by pressure transducer (1) then, send current signal to A/D converter (2) by the signal shielding line; A/D converter (2) is connected with PLC controller (3), current signal can be converted to digital signal and directly send PLC controller (3) to; PLC controller (3) internal memory contain fuzzy neural network processor can carry out fuzzy neural network to digital signal and handle and digital filtering, is converted into oil mass signal then and is sent to computer and display device (4) by the PC/PPI cable; By computer signal is handled, shown data or the result who measures by display device.
2, the method for measurement of diesel oil pump fuel injection amount according to claim 1 is characterized in that, the pressure transducer of installing on each oil measurement cup of test stand (1) is connected on the A/D converter (2) with shielded cable.
3, the method for measurement of diesel oil pump fuel injection amount according to claim 1 is characterized in that, described computer and display device (4) are the display device of industrial control computer and touch-screen type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100393547A CN101285444A (en) | 2007-04-11 | 2007-04-11 | Diesel oil pump fuel injection amount measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100393547A CN101285444A (en) | 2007-04-11 | 2007-04-11 | Diesel oil pump fuel injection amount measurement method |
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| Publication Number | Publication Date |
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| CN101285444A true CN101285444A (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100393547A Pending CN101285444A (en) | 2007-04-11 | 2007-04-11 | Diesel oil pump fuel injection amount measurement method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297066A (en) * | 2011-09-22 | 2011-12-28 | 温州大学 | System and method for detecting spraying angle of engine oil sprayer |
| CN102852183A (en) * | 2012-09-07 | 2013-01-02 | 三一重机有限公司 | Excavator oil consumption display control system, control method thereof, and excavator |
| CN103292834A (en) * | 2013-03-04 | 2013-09-11 | 中国人民解放军海军航空工程学院青岛校区 | Aircraft fuel liquid level fluidic sensor test system |
| CN104500302A (en) * | 2014-11-21 | 2015-04-08 | 广西智通节能环保科技有限公司 | Sensing type oil injection meter |
| CN108204302A (en) * | 2018-03-13 | 2018-06-26 | 中国船舶电站设备有限公司 | A kind of natural gas injection pilot solenoid valve control device and its application process |
-
2007
- 2007-04-11 CN CNA2007100393547A patent/CN101285444A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297066A (en) * | 2011-09-22 | 2011-12-28 | 温州大学 | System and method for detecting spraying angle of engine oil sprayer |
| CN102852183A (en) * | 2012-09-07 | 2013-01-02 | 三一重机有限公司 | Excavator oil consumption display control system, control method thereof, and excavator |
| CN102852183B (en) * | 2012-09-07 | 2016-01-20 | 三一重机有限公司 | A kind of excavator oil consumption display control program and control method thereof and excavator |
| CN103292834A (en) * | 2013-03-04 | 2013-09-11 | 中国人民解放军海军航空工程学院青岛校区 | Aircraft fuel liquid level fluidic sensor test system |
| CN104500302A (en) * | 2014-11-21 | 2015-04-08 | 广西智通节能环保科技有限公司 | Sensing type oil injection meter |
| CN108204302A (en) * | 2018-03-13 | 2018-06-26 | 中国船舶电站设备有限公司 | A kind of natural gas injection pilot solenoid valve control device and its application process |
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Open date: 20081015 |