What is the function of motorcycle igniter and high-voltage bag?

The function of the motorcycle igniter is to receive and store the ignition voltage provided by the magneto, and accurately calculate the ignition time and provide it to the high voltage package in time. The high-voltage bag will induce the low voltage of the igniter to ignite the spark plug for high-voltage electricity, which is simply the device to start the motorcycle.

Motorcycle igniter is mainly composed of power supply, ignition coil, distributor, ignition switch, spark plug, additional resistor and its short circuit device, high and low voltage wires, etc.

Power supply: It consists of storage battery and generator. When starting, the ignition system is provided with low-voltage electric energy by the storage battery; After starting, when the generator voltage is higher than the battery voltage, the ignition system is provided with low-voltage electric energy by the generator.

Ignition coil: converts 12V low-voltage electricity provided by automobile power supply into high-voltage electricity that can break through the spark plug gap.

Distributor: driven by the generator camshaft, the primary current of the ignition coil is turned on and off on time, so that the ignition coil can generate high-voltage electricity in time, and the high-voltage electricity is transmitted to the spark plugs of each cylinder according to the ignition sequence; At the same time, the ignition time can be adjusted automatically and manually. Among them, the function of capacitor is to reduce the contact spark of circuit breaker and improve the secondary voltage of ignition coil.

Ignition switch: controls the on-off of the low-voltage circuit of the ignition system, and controls the startup and shutdown of the generator.

Spark plug: high-voltage electricity is introduced into the combustion chamber to generate an electric spark to ignite the mixture.

Additional resistance short-circuit device: when starting, short-circuit the additional resistance to increase the primary current of the ignition coil and enhance the flashover energy of the spark plug when starting.

Second, high-voltage packaging

High voltage package, whose proper name is line output transformer, is also called line package or line transformer. The working principle of high-voltage package of display is basically the same as that of TV. Its main function is to generate anode high voltage and provide various voltages such as focusing, acceleration and grid.

Because high-voltage packaging works at high temperature, high frequency, high voltage and high current, the external environment is humid or dusty, and the damage probability of high-voltage packaging is high. The alternating current output by the high-voltage bag can be rectified to establish a high-voltage electric field in front of the positive electrode, and electrons are accelerated in this electric field, so that the image has enough brightness. This is how the high-voltage package is discharged.

Extended data:

Troubleshooting of short circuit between motorcycle igniter and high voltage package conductor

Fault phenomenon:

A certain brand 125 riding motorcycle, after driving 5000 kilometers, the engine is difficult to start, and it is easy to stall at first.

Fault analysis and elimination:

Turn on the ignition switch, start the engine, and put into first gear. When the clutch is slowly released and the vehicle just starts, the engine will turn off immediately. Start the machine again after the flameout, but it can't be started. After inspection, the spark of high-voltage line is very weak, sometimes not. The igniter and ignition coil were replaced successively, and the fault remained. Tested by multimeter, there is no abnormality in ignition switch and magneto coil.

After further inspection, it is found that the cable of the whole vehicle is under the handlebar steering column. Due to the long-term rotation of the handlebar, the cable is seriously worn and some thread ends are broken. After careful inspection, it is found that most of the wires from the igniter to the high-voltage bag have been disconnected.

As a result, the spark of the high-voltage line is weak, the engine is difficult to start, and the engine begins to stall. Reconnect the wire, wrap it with insulating tape and try again. The engine started smoothly. Troubleshooting.

Baidu encyclopedia-high voltage package

Baidu encyclopedia-motorcycle igniter