CN101696669B - Testing device with electromagnetic compatibility with automotive ignition system and method thereof - Google Patents
Testing device with electromagnetic compatibility with automotive ignition system and method thereof Download PDFInfo
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- CN101696669B CN101696669B CN2009101911379A CN200910191137A CN101696669B CN 101696669 B CN101696669 B CN 101696669B CN 2009101911379 A CN2009101911379 A CN 2009101911379A CN 200910191137 A CN200910191137 A CN 200910191137A CN 101696669 B CN101696669 B CN 101696669B
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Abstract
The invention relates to a testing device with electromagnetic compatibility with an automotive ignition system and a method thereof. The testing device comprises a storage battery, an artificial mains network, an ignition controller and an ignition coil, wherein the on and off of the ignition coil are controlled by using the ignition controller with a shielding case so as to realize the normal discharge on a jack horse of the ignition system; and a spark plug shielding case performs electromagnetic shielding to the discharge spark so as to simulate the shielding function of an engine cylinder to the discharge spark of the spark plug on a real vehicle. The device and the method of the invention are simple and easy to operate, are capable of exactly test the electromagnetic compatibility of the ignition system and have good repeatability.
Description
Technical field
The invention belongs to the electromagnetic compatibility technology field of automobile.More precisely, the present invention relates to the method and apparatus of testing automobile ignition system electromagnetic compatibility.
Background technique
Existing electromagnetic compatibility with automotive ignition system generally adopts the car load test method.Its shortcoming is: on the one hand, the car load test must be carried out behind engine start, this moment, generator and the numerous electronics/electrical equipment of Che Nei were started working, make that the elecromagnetic environment in the car is very complicated, the test result that causes ignition system electromagnetic compatibility on the car load can accurately not embody its electromagnetic disturbance characteristic; On the other hand, the rotating speed of the car load test fitness for purpose motor of ignition system electromagnetic compatibility is controlled at about 1500rad/min, because the variation of engine operation characteristic and the influence of other factors, the rotating speed of motor tends to fluctuate in test process, causes the car load test result repeatability of ignition system electromagnetic compatibility relatively poor.
Summary of the invention
The purpose of patent of the present invention provides a kind of good reproducibility, is easy to realize, stand test method and the corresponding testing apparatus that can accurately assess the electromagnetic compatibility of automotive ignition system.
The present invention is specifically by the following technical solutions:
A kind of testing apparatus of electromagnetic compatibility with automotive ignition system, comprise: storage battery, artificial mains network, ignition controler, spark coil, the positive pole of storage battery links to each other with negative pole G1 with the anodal P1 of artificial mains network's input end respectively by lead with negative pole, and the negative pole G1 of described artificial mains network's input end is also connected on the grounded metal flat board;
Described artificial mains network's negative pole of output end G2 links to each other with the earth electrode G of ignition controler, and artificial mains network's output head anode P2 links to each other with the anodal IG+ of spark coil, and the negative pole IG-of described spark coil links to each other with the anodal IG of ignition controler;
The elementary winding of described spark coil is connected between the anodal IG+ and negative pole IG-of spark coil;
The positive terminal S+ of described spark coil secondary windings links to each other by the centre electrode of high-voltage conducting wires with two identical spark plugs respectively with negative terminal S-, and the discharge end of two spark plugs is inserted in the spark plug radome by tapped hole.
Described testing apparatus also comprises first testing receiver, link to each other with artificial mains network's interference output port (T) by concentric cable, in the test process of ignition system Conducted Electromagnetic harassing and wrecking, the artificial mains network is no more than 200mm with the lead that is connected between spark coil, when the primary circuit conducting of described spark coil, first testing receiver obtains the conduction interference voltage that disturbs output port (T) to locate.
Described testing apparatus also comprises second testing receiver, receiving antenna, in the test process of ignition system electromagnetic radiation harassing and wrecking, rat tail between artificial mains network and spark coil is 1500 ± 50mm, receiving antenna is aimed at the central position of rat tail, when the primary circuit conducting of described spark coil, second testing receiver links to each other with receiving antenna by concentric cable, obtains the radiation disturbance electric field at receiving antenna place.
During test, ignition controler is by the conducting and the disconnection of fixing FREQUENCY CONTROL spark coil primary circuit, and the gap between central electrode and lateral electrode is breakdown at this moment, forms sparkover, realizes the electromagnetic compatibility test to automotive ignition system.
The present invention is by adopting the fire signal controller of band screening can, this controller is produced the fire signal generation module of EDM Generator of Adjustable Duty Ratio based on 555 time base circuits, after its output signal is amplified through integrated amplifier LM386, driving is based on the switch module of IRPF460MOSFET, realization is to the control of spark coil primary circuit break-make, engine management system (EMS) on the simulation real vehicle is to the control of spark coil primary circuit break-make, use the spark plug radome simultaneously the discharge electrical spark of spark plug in the igniting process is carried out electromagnetic shielding, the shielding action of motor car engine cylinder during with the test of simulation car load.
Lighted a fire the control of signal controller and moment of disconnecting at the spark coil primary circuit, form self induction electromotive force in the elementary winding of spark coil, and by the mutual inductance between spark coil primary and secondary winding, in secondary windings, form high-tension mutual induction electromotive force, thereby disruptive spark plug gap forms sparkover.Since adopt the square signal of fixed frequency and dutycycle that the break-make of primary circuit is controlled, the fixed-frequency that makes sparkover, thus test result has good repeatability.
The stand electromagnetic compatible testing method of this automotive ignition system has been avoided the influence of the electromagnetic distrubance of other electric equipment to test result effectively, thereby test result can embody the electromagnetic disturbance characteristic of ignition system itself exactly.
The advantage of patent of the present invention is that described testing apparatus test method simple for production, described is easy to realize, and is better to the test result repeatability of electromagnetic compatibility with automotive ignition system.
Description of drawings
Fig. 1 is the rough package drawing of ignition system electromagnetic compatibility test device of the present invention;
Fig. 2 is the circuit block diagram and the screening can schematic representation of patent ignition controler of the present invention;
Fig. 3 is the schematic representation of patent spark plug radome of the present invention.
Embodiment
Below in conjunction with accompanying drawing technological scheme of the present invention is further described in detail.
The present invention is based on the electromagnetic compatible testing method of the vehicle component generally known in the present technique field and module and equipment (referring to the GB18655-2002 third part: on the basis measurement of vehicle component and module), by adopting ignition system electromagnetic compatibility test device, engine management system (EMS) on the simulation real vehicle is to the control of spark coil primary circuit break-make, use the spark plug radome simultaneously the discharge electrical spark of spark plug in the igniting process is carried out electromagnetic shielding, the shielding action of motor car engine cylinder during with the test of simulation car load.
Lighted a fire the control of signal controller and moment of disconnecting at the spark coil primary circuit, form self induction electromotive force in the elementary winding of spark coil, and by the mutual inductance between spark coil primary and secondary winding, in secondary windings, form high-tension mutual induction electromotive force, thereby disruptive spark plug gap forms sparkover.Since adopt the square signal of fixed frequency and dutycycle that the break-make of primary circuit is controlled, the fixed-frequency that makes sparkover, thus test result has good repeatability.
Referring to Fig. 1, the device of testing automobile ignition system electromagnetic compatibility of the present invention comprises storage battery 1, artificial mains network 2, ignition controler 3, spark coil 4; The positive pole of storage battery 1 links to each other with negative pole G1 with the anodal P1 of artificial mains network's 2 input ends respectively by lead with negative pole, the G1 utmost point links to each other with grounded metal dull and stereotyped 8 with lead, artificial mains network 2 negative pole of output end G2 link to each other with the earth electrode G of ignition controler 3, artificial mains network 2 output head anode P2 link to each other with the anodal IG+ of spark coil 4, the negative pole IG-of spark coil 4 links to each other with the anodal IG of ignition controler 3, the positive terminal S+ utmost point of spark coil 4 secondary windings links to each other by the centre electrode of high-voltage conducting wires with two identical spark plugs 5 respectively with the negative terminal S-utmost point, and the discharge end of two spark plugs 5 is inserted in the spark plug radome 6 by tapped hole 12.
During test, the switch S closure, the switch conduction of dryelement cell 7, ignition controler 3 is started working, the primary circuit that makes spark coil 4 is by fixing frequency conducting and disconnection, and the gap between spark plug 5 centre electrodes and lateral electrode is breakdown at this moment, forms sparkover, after observing spark plug 5 regular pictures from the monitoring holes 13 of spark plug radome 6, use copper foil tape to seal monitoring holes 13.Test method according to GB18655-2002 is tested the electromagnetic compatibility of ignition system on the stand.
When the Conducted Electromagnetic harassing and wrecking of test point ignition system, artificial mains network 2 is no more than 200mm with the lead that is connected of 4 of spark coils, when switch S is closed, the ignition system proper functioning, first testing receiver 15 links to each other with artificial mains network 2 test port T by concentric cable, obtains the conduction interference voltage at port T place.
When the electromagnetic radiation harassing and wrecking of test point ignition system, the rat tail that artificial mains network 2 and spark coil are 4 is 1500 ± 50mm, receiving antenna 14 is aimed at the central position of rat tail, when switch S is closed, the ignition system proper functioning, second testing receiver 17 links to each other with receiving antenna 14 by concentric cable, obtains the radiation disturbance electric field at receiving antenna 14 places.
Referring to Fig. 2, fire signal controller 3 comprises fire signal generation module 16 based on 555 time-base integrated circuits, forms based on switch module 10 and the screening can 11 of MOSFET.Its working principle is: fire signal generation module 16 adopts 555 time-base integrated circuits to make, and adopt supplying cell to power, respective pins output frequency 555 during work is 25Hz, dutycycle is 8% square signal, and after the 9 pairs of signals of signal amplification module based on LM386 amplify, driving realizes the control to spark coil primary circuit break-make based on the switch module 10 of IRPF460MOSFET.
Referring to Fig. 3, spark plug radome 6 is welded as the cavity of hexahedral shape by the steel plate of thick about 2mm, front, center has a tapped hole 12, can insert the discharge portion of spark plug 5 wherein, rear portion central authorities have a circular monitoring holes 13, can monitor the discharge scenario between spark-plug side electrode and centre electrode, can seal hole with copper foil tape during test, to obtain good shield effectiveness.The main effect of radome is that the discharge electrical spark to spark plug in the igniting process carries out electromagnetic shielding, the shielding action of motor car engine cylinder during with the test of simulation car load.
Claims (4)
1. the testing apparatus of an electromagnetic compatibility with automotive ignition system, comprising: storage battery (1), artificial mains network (2), ignition controler (3), spark coil (4) is characterized in that:
The positive pole of storage battery (1) links to each other with negative pole (G1) with the positive pole (P1) of artificial mains network (2) input end respectively by lead with negative pole, and the negative pole (G1) of described artificial mains network (2) input end is also connected on the grounded metal flat board (8);
Described artificial mains network (2) negative pole of output end (G2) links to each other with the earth electrode (G) of ignition controler (3), artificial mains network (2) output head anode (P2) links to each other with the positive pole (IG+) of spark coil (4), and the negative pole (IG-) of described spark coil (4) links to each other with the positive pole (IG) of ignition controler (3);
The elementary winding of described spark coil (4) is connected between the positive pole (IG+) and negative pole (IG-) of spark coil;
The positive terminal (S+) of described spark coil (4) secondary windings links to each other by the centre electrode of high-voltage conducting wires with two identical spark plugs (5) respectively with negative terminal (S-), and the discharge end of two spark plugs (5) is inserted in the spark plug radome (6) by tapped hole (12);
Described testing apparatus also comprises first testing receiver (15), link to each other with artificial mains network's (2) interference output port (T) by concentric cable, in the test process of ignition system Conducted Electromagnetic harassing and wrecking, artificial mains network (2) is no more than 200mm with the lead that is connected between spark coil (4), when the primary circuit conducting of described spark coil (4), first testing receiver (15) obtains the conduction interference voltage that disturbs output port (T) to locate;
Described testing apparatus also comprises second testing receiver (17), receiving antenna (14), in the test process of ignition system electromagnetic radiation harassing and wrecking, rat tail between artificial mains network (2) and spark coil (4) is 1500 ± 50mm, receiving antenna (14) is aimed at the central position of rat tail, when the primary circuit conducting of described spark coil (4), second testing receiver (17) links to each other with receiving antenna (14) by concentric cable, obtains the radiation disturbance electric field that receiving antenna (14) is located.
2. the testing apparatus of electromagnetic compatibility with automotive ignition system according to claim 1 is characterized in that:
Described ignition controler (3) comprises fire signal generation module (16), signal amplification module (9), driving switch module (10), by supplying cell (7) power supply that is on the grounded metal flat board (8), the fire signal of fire signal generation module (16) being exported through signal amplification module (9) amplifies rear driving switch module (10), and the engine management system EMS on the simulation real vehicle is to the control of spark coil primary circuit break-make.
3. the testing apparatus of electromagnetic compatibility with automotive ignition system according to claim 1 is characterized in that:
Described spark plug radome (6) is made up of the intact metal box hat of sealing, front central position at the shielding box hat, spark plug thread hole (12) is arranged, rear portion at the shielding box hat, have the spark monitoring to detect hole (13), the discharge end of spark plug (5) is inserted in the spark plug radome (6) through spark plug thread hole (12).
4. the method for utilizing each described electromagnetic compatibility with automotive ignition system testing apparatus of claim 1-3 to test is characterized in that:
During test, ignition controler is by the conducting and the disconnection of fixing FREQUENCY CONTROL spark coil primary circuit, and the gap between central electrode and lateral electrode is breakdown at this moment, forms sparkover, realizes the electromagnetic compatibility test to automotive ignition system;
This method is by adopting the fire signal controller of band screening can, this controller is based on the fire signal generation module that 555 time base circuits are produced EDM Generator of Adjustable Duty Ratio, after its output signal is amplified through integrated amplifier, driving is based on the switch module of IRPF460MOSFET, adopt the square signal of fixed frequency and dutycycle that the break-make of spark coil primary circuit is controlled, engine management system on the simulation real vehicle is to the control of spark coil primary circuit break-make, lighted a fire the control of signal controller and moment of disconnecting at the spark coil primary circuit, form self induction electromotive force in the elementary winding of spark coil, and by the mutual inductance between spark coil primary and secondary winding, in secondary windings, form high-tension mutual induction electromotive force, thereby disruptive spark plug gap, form sparkover, realize electromagnetic compatibility test automotive ignition system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101911379A CN101696669B (en) | 2009-10-16 | 2009-10-16 | Testing device with electromagnetic compatibility with automotive ignition system and method thereof |
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| CN2009101911379A CN101696669B (en) | 2009-10-16 | 2009-10-16 | Testing device with electromagnetic compatibility with automotive ignition system and method thereof |
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| CN101696669A CN101696669A (en) | 2010-04-21 |
| CN101696669B true CN101696669B (en) | 2011-10-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108872836A (en) * | 2018-07-09 | 2018-11-23 | 深圳市合信达控制系统有限公司 | A kind of detection method and device of control panel anti-electromagnetic-radiation ability |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222146A (en) * | 2011-06-30 | 2011-10-19 | 重庆大学 | Isolation-technique-based anti-electromagnetic interference ignition coil and design method thereof |
| CN103592543B (en) * | 2013-11-19 | 2017-07-07 | 山西吉利汽车部件有限公司 | A kind of automotive electronics electrical equipment transient state conducted emission test device |
| CN106499564B (en) * | 2016-12-14 | 2018-06-01 | 安徽江淮汽车集团股份有限公司 | A kind of method and engine igniting system for reducing vehicle broadband radiation |
| CN109470962B (en) * | 2018-12-06 | 2022-04-12 | 广电计量检测（西安）有限公司 | Electromagnetic compatibility intermittent test control device |
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| CN1522340A (en) * | 2001-07-31 | 2004-08-18 | 斯耐普昂技术有限公司 | Coil on plug inductive sampling method and apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872836A (en) * | 2018-07-09 | 2018-11-23 | 深圳市合信达控制系统有限公司 | A kind of detection method and device of control panel anti-electromagnetic-radiation ability |
| CN108872836B (en) * | 2018-07-09 | 2021-10-08 | 深圳市合信达控制系统有限公司 | Method and device for detecting electromagnetic radiation resistance of control panel |
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| CN101696669A (en) | 2010-04-21 |
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