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Line failure

- Mar 22, 2018-

Poor repair is the culprit

In the spontaneous combustion accident caused by the line fault, the main reason is to take iron. In particular, many new car users love their newly purchased cars. An anti-theft device may be added to the vehicle, a high-end audio/video system may be installed, or a car light may be modified or retrofitted to improve the styling. A number of vehicle-mounted appliances may also be added. However, due to not being refitted in a professional modification shop, the line layout and the specific structure of the vehicle were not analyzed, and no line power review was performed. For this reason, there have been random misleading wires, where the load is large without insurance, and where the friction is not effectively fixed, etc. Once there is a problem of line aging, overload, short-circuit, poor contact or galling, a large amount of heat energy will be generated in the ground. In addition to the poor quality of electric wires or flammable materials around them, spontaneous combustion accidents will be inevitable.

The common faults are: broken wires due to vibration and friction between the cables and the frame and clamps; taillights, brake light wires, etc. are caused by vibration and friction; and the lampholder installation place is damaged due to vibration and damage of connecting parts. Insulators loose, damage, etc.; will be in the vehicle when driving or parking its own iron and long-term flash fire, resulting in high temperatures, causing electrical damage to electrical appliances, switches, wires, and then increase the scope of jumps, expand the high temperature area, and finally lead to Contact with paint, leaked gasoline, flammable materials, etc. and spontaneously catch fire.

Prevention of spontaneous ignition

In some single-wired vehicles, the insulation of the live wire may damage the short circuit of the ground, especially the vehicles that are used for a long time, the circuit is old and the circuit arrangement is chaotic. The "protector" of the wire on the vehicle is the fuse. Once a large current is generated at the moment of short circuit, the fuse will be rapidly blown, thus short-circuiting the current. However, if the fuse is too large, for example, it is convenient to use copper wire instead of a standard fuse to cause loss of protection function, it may cause short circuit of the wire and cause fire.

In addition, a short circuit between the battery's live wire (positive wire) on the single-wired vehicle and the metal body on the vehicle also creates a fire. Therefore, once it is discovered that the ammeter indicates a large discharge current, the work of the electrical equipment is abruptly interrupted (such as headlights, heavy-duty electrical equipment such as air-conditioning motors), smells of rubber, or the edge of the machine cover and the vicinity of the instrument panel are found. When the smoke should quickly shut down and shut down, disconnect the car's total power switch, check the cause of troubleshooting.

Fire extinguishment is not hurriedly

In fact, in the event of spontaneous combustion, most vehicle owners have performed firefighting and self-rescue, but often a can of fire extinguishing agent went on but could not extinguish the flames, and finally watched as the car was destroyed. Each driver should be familiar with the use of fire extinguishers in order to avoid any accidents. In the event of a fire, an alarm should be made as soon as possible, and an initial fire suppression should be made using vehicle fire extinguishers or other fire extinguishing conditions as much as possible.

Special attention is paid to the fact that if an abnormal phenomenon such as smoke or fire is found at the engine, the occupants should be awake after confirming that the car is catching fire. Do not panic and park the car on the roadside. When preparing to extinguish, remember that you must not open the engine cover at this time, whether it is a front engine or a rear engine, either a diesel engine or a gasoline engine. Because the fire is still controlled under the hood, there is no thermal convection, and there is relatively little combustible material. The fire is relatively slow and it is beneficial to fighting. This is in line with the principle of “first control, then eliminate” fire extinguishing operations. At this time, the vehicle-mounted fire extinguisher may be used. The gap between the engine cover and the firing point shall be fire-fighting. Wait for the fire brigade to rescue and avoid panic.

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