What is the spontaneous combustion of a car and what is the cause of spontaneous combustion of a car

Graceful Golden Knife. Regarding the natural problem of the vehicle, if there is no warning, the sudden spontaneous combustion accident of the car is mostly caused by the fault of the line. In the spontaneous combustion accidents caused by line faults, most of the causes are caused by arbitrary changes to the line.

Add an immobilizer to the vehicle, replace it with a high-end stereo, improve the styling, and maybe add an air conditioner. However, if the relevant technical personnel have limited technical level, they will never analyze the circuit layout and specific structure of the vehicle, let alone consider the calculation of the power of different lines, so as to decide that it is more reasonable to obtain power supply by **. For this reason, there are many erroneous repairs, such as random wires, no insurance in places with large loads, and ineffective fixation in places prone to friction.

Once there is a problem of aging, overload or wear of the line, the faulty line will generate a large amount of heat energy, coupled with the poor quality of the wire or the surrounding flammable materials, spontaneous combustion accidents will be inevitable. In addition, the fire caused by the leakage of the fuel system is a typical kind of spontaneous combustion accident of the car, and if the transmission oil and steering power oil leak to the high-temperature exhaust pipe, it will also cause a disaster, so this point cannot be ignored.

The cause of spontaneous combustion of automobiles is the aging of the circuit, the aging of the oil circuit, the lack of oil in the lubricating oil system or improper modification. The following is a detailed description of the causes of spontaneous combustion in automobiles: Circuit aging:

The engine compartment of a car is filled with various electronic components and wires. If the wire sheath is damaged due to aging, resulting in leakage and short circuit, it is easy to cause open flames and cause spontaneous combustion of the vehicle. Oil circuit aging:

Due to insufficient ventilation, high temperature exposure, and heat generated by the work of various components, the temperature of the engine compartment is too high. If an oil leak occurs due to aging damage, it is easy to cause spontaneous combustion of the car. Lack of oil in the lubricating oil system:

If the engine's lubricating oil system is short of oil, the surface of the parts will be heated by rubbing against each other, igniting combustibles through heat conduction or radiation, and eventually causing a fire. However, this is more common in trucks. Improper modification:

Many car owners like to add various components to their cars, such as xenon, fog lights, reversing radar, etc. However, due to the non-standard and unprofessional modification, the wiring is chaotic and the interface is unstable, leaving hidden dangers for the spontaneous combustion of the vehicle.

1. Installing electrical appliances and modifying wirings on automobiles, due to the mistakes of installers or brutal construction, resulting in short circuits in wires and leading to disasters.

2. Due to the aging of vehicle electrical components and circuits, users do not pay attention to inspection and maintenance, and it is easy to cause short circuit and fire.

3. The aging of the engine fuel pipeline and the improper replacement of oil pipes and other parts cause fuel leakage. When encountering short circuits in wires and open flames caused by aging electrical appliances, it is easy to ignite gasoline and cause fire.

4. The fire of the car caused by the quality of the new car should be said to be a very rare phenomenon. The level of manufacturing is constantly improving, and this kind of misfire situation is becoming less and less.

1. There is a problem with the oil circuit of the car, resulting in oil leakage and liquid leakage. 2. It is the aging of the vehicle wires or improper connection that causes short circuit or sparks. 3. It is due to the combustion of flammable materials caused by high temperature.

4. It is caused by a vehicle impact or a failure of a mechanical part. 5. Excessive accumulation of engine sludge, high temperature in summer and high temperature of the engine, resulting in spontaneous combustion of oil sludge due to high temperature.

Leakage, tie-off, oil leakage, excessive contact resistance, motor vehicle vaporizer tempering, mechanical friction**, improper parking position, these can cause spontaneous combustion of automobiles. Among the spontaneous combustion accidents caused by line failures, the main cause is iron lapping.

In the installation of electrical appliances on the car, the modification of the line, due to the mistake of the installer or the wild and cautious construction, resulting in a short circuit of the wire. Due to the aging of vehicle electrical components and circuits, users do not pay attention to inspection and maintenance, and it is easy to cause short circuit and fire.

The aging of the engine fuel pipeline and the improper operation of the replacement of oil pipes and other parts cause fuel leakage, and when the open flame is generated by short circuit of wires and aging electrical appliances, it is easy to ignite gasoline and cause fire. The line contact is not real, and the resistance of the local wide elimination cover is too large, which generates heat energy, which causes the wire contact to heat up and cause combustible materials**.

Many new car buyers love the car they just bought, and may add an immobilizer to the vehicle, replace it with a high-end audio, improve the styling, and maybe add air conditioning to the bridge shirt, etc. These behaviors may be the cause of the wire lapping, and it is also one of the reasons for the spontaneous combustion of the car.

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The causes of spontaneous combustion of automobiles may include oil circuit problems, aging wires, sparks caused by short circuits of wires, combustion of flammable substances caused by high temperatures, vehicle collisions, mechanical failures, excessive oil sludge accumulation, etc. The following is an introduction to preventing spontaneous combustion of automobiles: Develop good driving habits:

Especially in summer, do not put gas lighters, fresheners, mosquito killers, etc. In the dashboard or car, it is very easy to expand after being heated, causing disasters. Regularly inspect the circuit circuit

The car owner regularly checks the circuit oil circuit, because the circuit of the car often appears after three or four years of use, due to the increase in the resistance of the wire, resulting in the phenomenon of rubber aging and heating, which is prone to short circuit, such as the battery terminal contact with the loose impulse due to impurities, oil pollution or corrosion and heating, ignition of the wire insulation layer, circuit contact loosening due to long-term vibration or rapid temperature change, etc.

Usually the spontaneous combustion of vehicles is caused by the following reasons:

1. In the spontaneous combustion accident caused by line failure, the main reason is "tie-up". This phenomenon is mainly due to the problem of line aging, overload, short circuit, poor contact or wear and tear, and the "tie-in" can generate very large heat. If the quality of the wire is not good enough, or there are many flammable and explosive items around, it is easy to cause spontaneous combustion accidents.

For example, the skin is broken due to vibration friction between the cable, the frame and the wire clamp; Tail lights, brake lights, wires, etc. are broken due to vibration and friction; The installation of the lamp holder is loose and damaged due to vibration and damage to the connectors, which will cause the vehicle to "catch the iron" and jump over for a long time when the vehicle is driving or parking, resulting in high temperature, causing insulation damage of electrical appliances, switches and wires, and then increasing the scope of the flashover, expanding the high temperature area, and finally leading to spontaneous combustion and fire in contact with paint, leaked gasoline, flammable materials, etc.;

2. The most common electrical short circuit of wire short circuit is that the starter switch is welded due to contact sintering, and the starter magnetic switch cannot be released, resulting in the starter starting for a long time (the safe start time of the starter is 5s), resulting in the starter heating **. In addition, in some single-wire cars, the insulator of the live wire is damaged and the "tie iron" or the electrical "tie iron" will cause short circuits, especially for some vehicles that have been used for a long time, the lines are dilapidated and the lines are arranged in a chaotic manner. The "protector" of the wires on the car is the fuse, and once the wire is short-circuited and a large current is generated instantaneously, the fuse will be quickly blown out.

However, if the fuse is too large, for example, someone tries to replace the standard fuse with copper wire, resulting in the loss of protection function, it may cause a short circuit in the wire and cause a fire;

3. Because the cars produced now are generally equipped with three-way catalytic reactors, and the temperature of this device located on the exhaust pipe is very high, the general temperature is 300 to 400, so once there are flammable materials at the bottom of the car at this time, it will be easy to be ignited by the three-way catalytic device, which will lead to spontaneous combustion of the vehicle.

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