【Car owner's car knowledge]With the development of the automobile industry, there are also various car modification products on the market. Most of the products claim to improve various performances of the vehicle, but is it really as they advertise? In fact, it is not. After bloating and dazzling, you will find that it is still unknown how useful it will actually be in practical use.
Chicken ribs modification 1-electronic rectifier
Through the internal research of automotive electronic rectifiers displayed by online merchants, it is found that most of the automotive electronic rectifiers are capacitor arrays composed of large capacitors in parallel. Its functions are claimed to be voltage regulation, rectification, and sound quality improvement, but I think it actually uses a capacitor array to increase and stabilize the voltage.
According to the principle of capacitor wave peak, when the regulator is 13.8V, the voltage of the whole vehicle may be as high as 15V when driving at high speed. In this way, although the on-board trip computer, DVD host and other electronic devices also have voltage regulators, because the on-board electronic devices are all working in the range of 12V DC, and there is a battery voltage regulator, the voltage adaptation range of the electrical equipment will not be designed to be too large. , it will definitely cause the threat of high voltage shock and accelerate the aging of electronic components. According to the service regulations of most car manufacturers, the 4s will not give warranty if the vehicle has problems caused by the owner's own installation of equipment.
Many riders who have installed automotive electronic rectifiers reported that after the installation, the driving was smooth and stable. The reason is that at low speed, due to the unstable power generated by the generator, the capacitor bank has a positive effect on the instantaneous power compensation of the whole vehicle related electrical appliances. . However, the main reason is that the capacitor bank has changed the original design and improved the peak square wave of the ignition coil (increased the voltage), which seems to enhance the ignition efficiency, but will the actual working voltage of the high-voltage coil greatly exceed the original design voltage ( Especially at high speed), which leads to the increase of the working temperature of the high-voltage coil and the premature damage?
The automotive electronic rectifier must be used with caution. If the automotive electronic rectifier is not designed with a protection circuit or the protection circuit is unreasonable, the harm is very great. At least one more fire hazard. Especially in the hot summer, the safety factor of the capacitor will be greatly reduced when the capacitor works under the high temperature of the engine compartment for a long time.
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