HV cable truncking under carbody

The function of automobile high-voltage wires: The function of automobile high-voltage wires is to connect and disconnect low-voltage circuits to cause the ignition coil to generate high-voltage current: 1. Generally, the ignition resistance of automobile spark plugs is around 2050M, which is very large compared to high-voltage lines. Basically, the resistance of the high-voltage line current-limiting resistor can even be "negligible", but when the high-voltage is short-circuited, the current-limiting resistor limits the current to a range that the high-voltage system can withstand without being damaged. Therefore, one of the functions of the high-voltage line resistor is to protect the normal operation of the ignition system and the vehicle electrical system; 2. Secondly, it can increase the ignition voltage. If the spark plug has too much carbon deposits, it will leak and cause a fire. With the resistor, the ignition voltage is increased, making it easier to break down the spark gap and bring the spark intensity to normal. In addition, the resistive high-voltage line plays a current-sharing role in high-voltage power distribution; 3. Third, it extends the spark plug discharge time and improves the ignition rate. During discharge, the spark plug is broken down and the resistance is very small. Because the resistance in the high-voltage path limits the maximum current flow, it takes longer to release the same amount of electrical energy.

The function of high-voltage line ignition coil:

1. The high-voltage wire of a car is a "wire" with an "insulation" device that transmits electrical energy through the ignition coil for the ignition of the spark plug, thereby allowing the engine to do work. Its structure is not complicated. It is produced through a production process outside the internal metal wire. Wrap the exterior with a layer of high-strength insulation;

2. It can have good insulation and internal transmission and conductive functions at high and low temperatures. The reason why the ignition coil can convert low-voltage electricity in the car into high voltage is because it has the same form as an ordinary transformer, and the primary coil has a larger turns ratio than the secondary coil;

3. However, the working mode of the ignition coil is different from that of ordinary transformers. The working frequency of ordinary transformers is fixed at 50Hz, also known as power frequency transformers, while the ignition coil works in the form of pulses, which can be regarded as a pulse transformer. It is based on the engine Different rotational speeds repeatedly store and discharge energy at different frequencies.