CN1126278A - Igniting characteristic detecting and analysing system of I.C engine - Google Patents
Igniting characteristic detecting and analysing system of I.C engine Download PDFInfo
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- CN1126278A CN1126278A CN 94113357 CN94113357A CN1126278A CN 1126278 A CN1126278 A CN 1126278A CN 94113357 CN94113357 CN 94113357 CN 94113357 A CN94113357 A CN 94113357A CN 1126278 A CN1126278 A CN 1126278A
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The test and analysis system of I.C engine ignition characteristics is composed of high-voltage and current probes, digital storage oscillascope, microcomputer and I/O device. The dynamic time-domain signals of high-voltage and current pulses during ignition are acquired via said probes by oscillascope, digitized, and displayed or stored. Based on special program, they are analyzed in microcomputer and its results are displayed, printed, drawn or stored by microcomputer.
Description
The present invention relates to a kind of detecting and analysing system that is exclusively used in test and analyzes the internal-combustion engine ignition characteristic.
The internal-combustion engine ignition characteristic comprises a series of internal-combustion engine ignition process technology parameters by international standard or national professional technique standard code, as secondary effective voltage, interruption current, spark voltage, spark current, spark energy and energy conversion efficiency etc.Accurately and timely measuring and analyze these technical parameters is that the quality of device quality all has crucial meaning for the quality of estimating the internal-combustion engine ignition performance objectively and internal-combustion engine ignition.In fact internal-combustion engine ignition characteristic test the earliest is a kind of observation qualitatively, has just begun the quantitative detection of internal-combustion engine ignition characteristic and has set up corresponding firing characteristic detection system up to the initial stage eighties.At present, state-of-the-art internal-combustion engine ignition Characteristics Detection system mainly is made up of high pressure rapier, electric current rapier and digital-storage oscillograph, digital-storage oscillograph is gathered the high voltage pulse of internal-combustion engine ignition process and the dynamic time-domain signal of impulsive current respectively by high pressure rapier and electric current rapier and with its digitizing, the dynamic time-domain signal of high voltage pulse that digitizing is later and impulsive current shows measurement by digital-storage oscillograph, or deposit in the oscillograph memory, treat to show again in case of necessity measurement.The digital-storage oscillograph detection system has had significant progress than observation and elementary quantitative detection qualitatively, but oscillograph, thereby to the test of internal-combustion engine firing characteristic with analyze and still have significant limitation because the demonstration measurement of this system and storage place one's entire reliance upon.At first, the voltage and current waveform of igniting process can only be measured, shows or be write down in this system simply, and even more important energy response etc. still will rely on artificial employing empirical correlation to calculate, and error is up to 30%.And the demonstration measurement of voltage and current waveform is according to relatively the estimating of shown curve of oscillograph display screen and display screen coordinate, thereby its accuracy is relatively poor, and the form of expression of testing result is also very single.In addition, the memory capacity and the display area of digital-storage oscillograph are all very little, and storage and the detection data that show are very limited, and the data of being preserved also are easy to lose because of misoperation.
Purpose of the present invention promptly is existing digital-storage oscillograph test system is improved, and to expand the scope to test of internal-combustion engine firing characteristic and analysis, particularly increases the test analysis function to the igniting process energy response.Meanwhile, also wish the storage capability of expanding system, improve the precision of measurement of system and make the form of expression variation of test result.
To achieve these goals, the present invention introduces microcomputer on the basis of original digital-storage oscillograph test system, so that digital-storage oscillograph both can be independently, also can be under the control of microcomputer gather the high voltage pulse of internal-combustion engine ignition process and the dynamic time-domain signal of impulsive current respectively and with its digitizing by high pressure rapier and electric current rapier, the dynamic time-domain signal of high voltage pulse that digitizing is later and impulsive current is shown by digital-storage oscillograph to be measured or deposits in the oscillograph memory, after digital-storage oscillograph shows that measurement or the high voltage pulse that stores and the dynamic time-domain signal data of impulsive current enter the inner memory of microcomputer by interface circuit, microcomputer adopts real-time or non real-time mode that it is carried out time-domain analysis and energy spectrometer according to internal-combustion engine ignition characteristic special test routine analyzer, and measurement and analysis result are printed by the microcomputer output unit, draw, show or deposit disk in.Be described in further detail below in conjunction with the technical characteristics of specific embodiment igniting characteristic detecting and analysing system of I. C engine of the present invention.
Accompanying drawing 1 is the block diagram of igniting characteristic detecting and analysing system of I. C engine of the present invention.
Internal-combustion engine ignition system is made up of a plurality of links, has just comprised links such as storage battery, ignition switch, spark coil, distributor, electrical assembly, high voltage wire and spark plug as gasoline engine ignition system.In fact the internal-combustion engine ignition characteristic has comprised that igniting is the relevant technical parameter of a series of and igniting process of each link, as secondary effective voltage, interruption current, spark voltage, spark current, spark energy etc.Though the firing technique parameter of international standard or national professional technique prescribed by standard is a lot of for number, mostly with igniting process in the dynamic time-domain signal of voltage, electric current of each link direct or indirect relation is arranged.In native system, igniting is that each link voltage, electric current time-domain signal are to gather by high pressure rapier and electric current rapier respectively.It is the dynamic measurement of each link high voltage pulse that the high pressure rapier is used to light a fire, and its voltage attenuation ratio is 1/1000, and maximum input voltage is 60KV, and band width is 20HZ-10MHZ.It is the dynamic measurement of each link impulsive current that the electric current rapier is used to light a fire, and its current/voltage conversion is than being 1: 1 (A/V), and the electric current climbing speed is 150A/ μ S.
The effect of digital-storage oscillograph is with the dynamic time-domain signal digitizing of electric current and voltage of high pressure rapier and the collection of electric current rapier and real-time demonstration measuring voltage electric current time domain waveform or deposits in the oscillograph memory, its analog bandwidth is more than or equal to 0-10MHZ, sampling rate is more than or equal to 20MSa/S, memory capacity is more than or equal to 2 * 8blt * 1024 points, and its memory is non-volatile memory.Digital-storage oscillograph also is furnished with the interface that is connected with microcomputer, and its above-mentioned functions both can independently be finished, and also can finish under microcomputer control.
After the initial data of digital-storage oscillograph collection or storage is imported microcomputer into by interface circuit, microcomputer promptly carries out time-domain analysis, energy spectrometer and frequecny domain analysis according to internal-combustion engine ignition characteristic special test routine analyzer to it, to obtain relevant characteristic parameter.At first, reduce processing to being sent to initial data in the microcomputer memory, with the actual numerical value that obtains electric current and voltage and with the form of array in addition layout deposit in the disk.In the reduction treatment process of initial data, calculate simultaneously and direct some the relevant characteristic parameter of the dynamic time domain waveform of electric current and voltage.After obtaining the actual array of electric current and voltage, ask the principle of energy according to integration, utilize the electric current and voltage value and the time value of each time point and adopt trapezoidal method of iteration to carry out the point-by-point integration computing, in the hope of the energy array of igniting process and deposit in the disk.
For the real-time characteristic of more carefully observing and analyze electric current and voltage in the igniting process and energy distribution and the tendency with respect to the electric current and voltage time domain waveform, native system also can be drawn electric current and voltage and energy curve on the indicator screen of microcomputer.In order to adapt to different number ranges and curve of different nature, so that make full use of screen area, obtain best display effect, native system does not adopt fixing curvilinear coordinate system, but generates specific curvilinear coordinate system according to the number range of data and time range and characteristic parameter.The form of coordinate plane is a grid, vertically is decided to be 8 lattices, laterally is divided into 10 lattices (consistent with the oscillograph coordinate plane).When drawing voltage-current curve, at first draw on screen title and coordinate plane are then according to the picture point statement point-by-point mapping voltage and current waveform of the numerical value in the array.On time shaft, horizontal 640 pixels on 1024 sampled points and the screen are pro rata distributed on the vertical picture element of screen.In order to make curve clear clearly demarcated, drawing straightway with the setting-out statement between points.After complete curve plots, on screen, get various characteristic parameters and prompt statement again.As required, can also on time shaft, expand demonstration to certain part of curve.The drafting of energy curve and the drafting of voltage-current curve are basic identical.
Igniting is that the energy conversion efficiency of each link also is the key character parameter of igniting system, and native system is to carry out simultaneously with the drafting of energy conversion efficiency curve to the calculating of each link energy conversion efficiency.On screen, draw earlier graph area and data sheet, after calculating or from disk, read in an energy datum, insert data sheet earlier, calculate the percentage of this link and last link or this link and spark coil primary energy numerical value again, it is the energy conversion efficiency of this link, with the form of colored rectangles bar energy curve is plotted in the graph area and with energy conversion efficiency then and inserts in the corresponding data sheet, specify the energy union of link to dispose until running through.
In general, at the initial stage of igniting process very high current spike is arranged all, its peak value can reach hundreds of times of normal electrical flow valuve, even thousands of times, it is the instantaneous discharge that is caused by device capacitor, this current pulse is the important electromagnetic interference source of igniting process.Therefore, the spectral characteristic of analysis igniting process electric current and voltage all has very important significance for the interference free performance of research igniting system and the performance of testing apparatus itself.The FFT frequecny domain analysis of native system is only carried out voltage current waveform, at first specified electric current and voltage array waveform pointwise is drawn in the screen top, then it is carried out the FFT computing and the pointwise of resulting frequency domain data group is drawn on the screen, on screen, provide necessary parameter and prompt statement at last.
Output software by means of internal-combustion engine ignition characteristic special test routine analyzer, all result of calculations of time-domain analysis, energy spectrometer or frequecny domain analysis can be stored in the disk or output on the printer, also the various graph curves of drawing can be copied on the printer or from plotter and export with the form of form.
Igniting characteristic detecting and analysing system of I. C engine of the present invention is except that carrying out the voltage current waveform of internal-combustion engine igniting process the time-domain analysis, also can carry out energy spectrometer and frequecny domain analysis to igniting process, and its accuracy is very high, and the form of expression of analysis result is variation also.In addition, the memory capacity of native system and display area increase greatly than the digital-storage oscillograph system, and the data of being preserved are also very safe, reason misoperation and losing not, and therefore, native system is specially adapted to the test and the analysis of internal-combustion engine ignition characteristic.
Claims (2)
1, a kind of igniting characteristic detecting and analysing system of I. C engine that is exclusively used in test and analyzes the internal-combustion engine ignition characteristic, it is characterized in that it is by high pressure rapier and electric current rapier, digital-storage oscillograph, microcomputer and input-output equipment thereof are formed, digital-storage oscillograph is gathered the high voltage pulse of each link of internal-combustion engine ignition process and the dynamic time-domain signal of impulsive current respectively by high pressure rapier and electric current rapier independently or under microcomputer control and with its digitizing, the dynamic time-domain signal of high voltage pulse after the digitizing and impulsive current shows its time domain waveform of measurement in real time by digital-storage oscillograph or deposits in the oscillograph memory, after digital-storage oscillograph shows that measurement or the high voltage pulse that stores and the dynamic time-domain signal data of impulsive current enter the microcomputer memory by interface circuit, microcomputer adopts real-time or non real-time mode that it is carried out time-domain analysis and energy spectrometer according to internal-combustion engine ignition characteristic special test routine analyzer, and measurement and analysis result are shown by the microcomputer output unit, print, draw or deposit disk in.
2, igniting characteristic detecting and analysing system of I. C engine according to claim 1, it is characterized in that described time-domain analysis and energy spectrometer program are, at first reduce processing to importing electric current and voltage initial data in the microcomputer internal memory into, to obtain the actual numerical value of electric current and voltage, calculate simultaneously and the direct relevant characteristic parameter of the dynamic time domain waveform of electric current and voltage, utilize the electric current and voltage value and the time value of each time point then and adopt trapezoidal method of iteration to carry out the point-by-point integration computing, in the hope of igniting is the mistake amount of each link, and the percentage that calculates this link and last link or this link and spark coil primary energy then is the energy conversion efficiency of this link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113357A CN1048074C (en) | 1994-12-30 | 1994-12-30 | Igniting characteristic detecting and analysing system of I.C engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113357A CN1048074C (en) | 1994-12-30 | 1994-12-30 | Igniting characteristic detecting and analysing system of I.C engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1126278A true CN1126278A (en) | 1996-07-10 |
| CN1048074C CN1048074C (en) | 2000-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94113357A Expired - Fee Related CN1048074C (en) | 1994-12-30 | 1994-12-30 | Igniting characteristic detecting and analysing system of I.C engine |
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| Country | Link |
|---|---|
| CN (1) | CN1048074C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467436A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Power supply data display method and monitor |
| CN102493908A (en) * | 2011-12-30 | 2012-06-13 | 力帆实业(集团)股份有限公司 | System for detecting ignition energy of magnetor |
| CN103541852A (en) * | 2013-10-08 | 2014-01-29 | 成都泛华航空仪表电器有限公司 | Full-automation igniter testing system |
| CN103939255A (en) * | 2014-04-30 | 2014-07-23 | 中国第一汽车股份有限公司 | Ignition test system and test method based on operation state of engine |
| CN104481773A (en) * | 2014-12-08 | 2015-04-01 | 武汉理工大学 | Variable-energy ignition measuring and controlling system and method |
| CN107367645A (en) * | 2017-06-12 | 2017-11-21 | 中国航发哈尔滨东安发动机有限公司 | A kind of method of testing of ignition device energy |
| CN108035832A (en) * | 2017-12-14 | 2018-05-15 | 天津斯巴克瑞汽车电子股份有限公司 | A kind of ignition coil online simulation testboard |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56138440A (en) * | 1980-03-31 | 1981-10-29 | Toyota Motor Corp | Operation control method for internal combustion engine |
| JPS58117362A (en) * | 1981-12-29 | 1983-07-12 | Alps Electric Co Ltd | Actual ignition timing detecting device |
| CN2042519U (en) * | 1988-11-21 | 1989-08-09 | 林武 | High-voltage spark-energy measuring instrument for petrol engine |
| CN2099203U (en) * | 1990-12-03 | 1992-03-18 | 重庆师范学院 | Microcomputerized testing apparatus for automobile engine |
-
1994
- 1994-12-30 CN CN94113357A patent/CN1048074C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467436A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Power supply data display method and monitor |
| CN102493908A (en) * | 2011-12-30 | 2012-06-13 | 力帆实业(集团)股份有限公司 | System for detecting ignition energy of magnetor |
| CN102493908B (en) * | 2011-12-30 | 2013-06-12 | 力帆实业(集团)股份有限公司 | System for detecting ignition energy of magnetor |
| CN103541852A (en) * | 2013-10-08 | 2014-01-29 | 成都泛华航空仪表电器有限公司 | Full-automation igniter testing system |
| CN103939255A (en) * | 2014-04-30 | 2014-07-23 | 中国第一汽车股份有限公司 | Ignition test system and test method based on operation state of engine |
| CN104481773A (en) * | 2014-12-08 | 2015-04-01 | 武汉理工大学 | Variable-energy ignition measuring and controlling system and method |
| CN104481773B (en) * | 2014-12-08 | 2016-07-06 | 武汉理工大学 | A kind of igniting TT&C system becoming energy and investigating method thereof |
| CN107367645A (en) * | 2017-06-12 | 2017-11-21 | 中国航发哈尔滨东安发动机有限公司 | A kind of method of testing of ignition device energy |
| CN108035832A (en) * | 2017-12-14 | 2018-05-15 | 天津斯巴克瑞汽车电子股份有限公司 | A kind of ignition coil online simulation testboard |
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| Publication number | Publication date |
|---|---|
| CN1048074C (en) | 2000-01-05 |
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