There are three ways to classify the current motorcycle igniter. According to the type, there are AC igniter, DC CDI igniter, DC inductance igniter, etc. According to the use of power supply, there are two kinds of magneto high voltage and low voltage battery; According to the high voltage pack, there are two kinds of CDI high voltage pack and inductive high voltage pack.
I. Introduction of different types of igniters
1, AC CDI igniter, voltage doubling AC igniter: the use of capacitors to save electric energy "thyristor instant discharge principle, so that the high voltage packet output ultra-high ignition voltage. The AC pulse high voltage voltage output by magneto is called AC-CDI igniter, and the CDI high voltage pack suitable for pulsed high voltage voltage is used.
2, DC CDI igniter: The 12V battery in the car as a power supply, the igniter has a boost circuit, and then the use of capacitor energy storage "thyristor discharge circuit mode, so that the high voltage packet output ultra-high ignition voltage. Because of the use of low-voltage DC power supply, it is called DC-CDI igniter, and the output end is still supporting the common CDI high voltage pack.
3, DC inductance igniter: 12V battery in the car as a power supply, the igniter has a calculation circuit inside, output high current/low voltage to a special matching inductance high voltage package, some of which are called "digital igniter". The output of this igniter is "charging" at the time of energizing the inductive high voltage pack, and "flameout" at the time of energizing the inductive high voltage pack, which is different from the ignition principle of applying capacitor high voltage discharge to the CDI igniter.
4, integrated igniter: is the igniter of the combination of the igniter and the high pressure package, the appearance is similar to the high pressure package. Only AC igniters powered by magneto are available on the market. The AX100 integrated igniter and the Mulan integrated igniter are used in the two-impulse engine, which belong to the self-triggering AC-CDI igniter and have a little variable Angle function. The four-stroke engine has an XH90 integrated igniter, which requires the sensor to provide a trigger signal and is a fixed-angle AC-CDI circuit.
2. Identification method of igniter type
· Electric meter measurement method
The method is based on the circuit characteristics of the igniter to identify.
1, for the AC igniter (AC-CDI), the power input end (the charging end of the magneto) can usually accept 200 volts of micro-current voltage. However, if the direct current igniter (DC-CDI), usually can only accept a maximum voltage of 15 volts. Therefore, the first step to identify the igniter is to watch the reaction of the firearm to the power supply voltage, and first identify the igniter is the use of magneto power supply, or the use of motorcycle 12V battery.
2, for the AC igniter (AC-CDI), the power input can usually accept the pulse voltage of 200 volts, and the 12V voltage of the battery has almost no reaction, and the meter is forward to measure it and the ground end is "blocked". Reverse measurement, sometimes measured in the igniter only discharge rectifier tube. If the DC igniter (DC-CDI), when the power input is connected to +6V ~ +12V, there is usually a "standby current" of 7mA ~ 26mA due to the "boost circuit" in the igniter.
3, for the DC igniter, because there is a booster circuit in the igniter, if connected to the 12V power supply, there will be 7mA ~ 26mA "standby current", which is the identification of AC igniter and DC igniter the simplest and most important difference. For an igniter of unknown nature, the first thing you should do is to use 12V power for testing! If the magneto is randomly connected for testing, the DC igniter will be burned at the moment of startup.
4, in the igniter measurement and identification, the 12V battery should be used with special care, usually the + pole of the battery is connected to the power input of the igniter, which is the charging input of the AC igniter in appearance. Do not connect backwards! Otherwise, it is possible to burn the DC igniter, or burn the reverse rectifier tube in the AC igniter. If it is a voltage doubling AC igniter, there is a voltage doubling capacitor, you do not have to care about how the power input is connected to the battery.
5, determine whether the igniter is to use high voltage AC or low voltage direct current, and then connect the trigger line to give a trigger signal. If there is a high voltage pulse output at the output end of the igniter, it can make the neon bubble shine. The CDI igniter must be equipped with a CDI high voltage pack to normally ignite. If the output voltage pulse of the igniter is lower than 12V voltage, the neon bubble can not shine, and it must be equipped with inductance high voltage pack to ignite, that is the inductance igniter.
· Motorcycle test identification
1. When the wiring of the igniter is plugged in, do not connect the power cord (the charging end of the AC igniter), or unplug the high-voltage output wire of the magneto in advance. After making sure that the ground wire of the igniter is well connected to the ground wire of the car circuit, pull out the high voltage cap from the spark plug and insert a backup spark plug on the car body. Finally, the direct current circuit on the motorcycle (the fire line is connected to the battery + pole.) To connect the charging end of the igniter.
2. After the igniter is connected to the circuit above, turn the magneto to trigger the sensor to send the ignition signal to the igniter to see if the spark plug is igniting. If the spark plug ignites, this is a DC igniter. (The charging end of the AC igniter usually accepts hundreds of volts, and is indifferent to the 12V of the battery.) If the ignition is not temporarily ignited, it is necessary to carefully check the cause, or determine the nature of the igniter with an electric meter measurement method, and it cannot be easily misjudged as an AC igniter.
3, the more safe way is to use a low-voltage power supply to do repeated tests on the igniter, many times to determine that it is not the use of low-voltage DC igniter, it can be determined as an AC igniter. Conditionally, you can use a high-voltage power supply with a small current, if it is a DC igniter, it can also be caused by small current and reduced voltage without harming the igniter. However, the high voltage of the small current will still charge the AC igniter, and be careful to discharge in the test.
4, for special cases, such as inductance high voltage pack is not suitable for supporting CDI igniter; Some igniters are combined with high pressure packs, such as the XH90 four-stroke integrated igniter. There are also self-triggered two-stroke AC igniter, which uses a magneto high-voltage supply, forward charge storage/reverse trigger discharge, such as the two-stroke AX100 integrated igniter.
· Method of identifying variable Angle igniter
1. The volume of variable Angle igniter is usually larger than that of fixed Angle igniter, and the price is higher than that of fixed Angle igniter; For uncertain igniters, it is usually possible to compare the appearance and size of similar igniters.
2, after installation on the motorcycle, the test experience is easy to start, whether the idle speed is stable, whether the start is strong, and whether the acceleration is strong. If none of these four things perform well, it's usually a fixed-angle igniter.
3. Open the side cover of the magneto flywheel, connect the ignition system to the "strobe light", and paste a reflective strip on the magneto flywheel; Then start the engine and observe whether the light and shadow of the reflective strip on the flywheel changes under the strobe light.
4. Open the side cover of the magneto flywheel, connect the high voltage cap to the neon strobe light, and then ask another person to start; Observe the reflective development on the flywheel, the position of the sensor core alignment is at the front or back edge of the trigger boss, if the variable Angle igniter, the ignition Angle is at the back edge of the trigger boss when starting.
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