Automotive fuses
Speaking of the word fuse, it is estimated that many people have heard that generally there are fuses related to electricity. The role of automotive fuses is estimated that many people do not understand, let Xiaobian use a real case to explain to you the importance of automotive fuses.
A car owner noticed that the airbag warning light on his car was on, and then he went to the 4s shop for maintenance. The result was that the driver airbag module was broken. To troubleshoot the problem, he had to replace it as a whole, and the replacement cost needed 2000 pieces. Because there was no goods in the shop at the time, there was no repair. After a few days, we went to the 4S shop to maintain the maintenance of the master to test the airbag lamp, the results of a 180 ° turn, the maintenance of the master said that there is no need to change the module, the problem lies in the fuse responsible for the airbag "burned out" The problem of replacing the new fuse with 2 yuan was solved. It is not difficult to see how big the "fuses" are through the above examples. A small fuse will instantly reduce the maintenance cost by 1000 times, showing how great its influence is. Let Xiao Bian make some simple introductions to the common sense of automotive fuses.
The definition of a fuse: The fuse is just its common name. The official name of the fuse is called a fuse (hereinafter referred to as a fuse for ease of understanding). The most basic function is to protect the circuit when the circuit current is abnormal and exceeds its rated current. General fuses have two important operating parameters, one is the rated current; the other is the rated voltage. When using, select the corresponding fuse according to the current and voltage of the circuit.
In terms of structure, the fuses used in general vehicle fuses have a design with a chip-type design. The fuses have a plastic housing and are surrounded by a melt structure made of zinc or copper. The metal melt is connected to the pins.
The size of the automotive blade fuses is generally 2A to 40A, and the amperage value will be marked at the top of the fuse. If the fuse is blown and the ampere value is not recognizable, we can judge it by its color. The international standard: 2A gray, 3A purple, 4A pink, 5A orange, 7.5A brown, 10A red, 15A blue, 20A yellow, 25A colorless transparent, 30A green, 40A dark orange.
Where are the car fuses?
Because there are many parts and electronic devices on the car, and each device is equipped with a fuse, in order to facilitate future maintenance, each car is designed at the beginning of the design, and the designer places the car fuses in one place. The place is called a fuse box. A car generally has two fuse boxes, one in the engine compartment, responsible for the fuses of external electrical appliances for the car, such as the engine control unit, horn, glass cleaner, ABS, headlights, etc.; the other is near the driver's left side, Manages electrical appliances in the car, such as window regulators, airbags, power seats, and cigarette lighters.
The above is a common knowledge about automotive fuses, and a proper understanding of some of the relevant knowledge will help the owner to determine the fault of the car fuse. In addition, at least when you have a problem, you know where to look, and you don't like to fly around like a headless fly.
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