Automotive Prevention of Spontaneous Combustion

Automotive Prevention of Spontaneous Combustion Spontaneous combustion of the vehicle, a situation that does not seem to be easy to appear, but in a short period of one month, the Beijing-Zhuhai Expressway in the northern part of Guangdong Province actually appeared 9 auto-ignition accidents. Recently, under the influence of persistent high temperatures, aging of wiring harnesses, improper installation, loose connectors, erosion by rainwater, and engine compartment oil contamination caused more and more vehicle self-ignition due to circuit and oil circuit problems. How can we prevent them in the summer? Without "burning", the owner must pay great attention.

If you say that your car has a hidden danger of self-ignition, you must feel "nonsense", but if you have the following situations, you have to be careful.

1, aging 4 years old harness aging

Many older vehicle owners have no concept of the life of high-voltage lines, battery lines, and electrical lines. They are rarely replaced during maintenance and some owners have never even noticed these problems. It is understood that the electric current of the automotive circuit is prone to heat, and it is most prone to spontaneous combustion. When the age of a car reaches 4 years or more, the line will be deteriorated, especially if the old car line has been remodeled. Special attention has been paid to it.

2, install retrofit resistance is wrong

Many new cars may have reversing radars, anti-theft devices, high-end stereos, and improved styling. However, the fuse currents in fuses and fuses on automobiles are scientifically calculated. For example, a 10 ampere line is equipped with a 5 amp fuse. The fuse is easily blown.

In addition, when these devices are retrofitted, if solder connections are not used but are wrapped with tape, the electrical resistance at the interface increases, the heat generation increases, and the probability of short-circuit increases. The electric resistance of the wires twisted together becomes large, and heat is generated when a large current is passed. The multilayer black cloth does not easily dissipate heat, and it spontaneously ignites to a certain extent.

3, connector loose, rain erosion

Most automotive wire connectors use connectors. The contact area, plugging force (determined by the elasticity and thickness of the copper sheet) of these connectors are critical to safety. Therefore, connectors and slots should also be checked regularly. If the copper piece is burnt black, the shell is burned and discolored. The erosion of rain will also cause the connector to be in poor contact. The bad contact will cause the resistance to become large and heat, causing hidden troubles. In addition, after a certain period of use, the connector is easily loosened, exposing the contacts and increasing the probability of spontaneous combustion.

4. Severe oil in the engine compartment

If the car has cracked gasoline pipes, oil spills, engine cover oil, etc., encountering an open flame may cause a fire. Some old models have residual oil and oil on the engine. The evaporation of gasoline in the engine compartment will increase correspondingly in the summer and will burn if an open flame is encountered.

5. Parking near combustibles

At the time of parking, cars currently produced are generally equipped with a three-way catalytic reactor, and the temperature of the device on the exhaust pipe is high. If you are parked in an improper position, such as near a flammable object, a fire may occur.

In addition, due to the high ground temperature in summer, if the idling speed is on the side of the road, the highest temperature point of the exhaust pipe under the vehicle is higher than 800°C. If you park on the ground with hay, paint, or other flammable items, you will catch fire when baked for a long time.

6, the car has combustibles

Many owners are accustomed to storing waste cotton yarns, towels, thread gloves, carbonated drinks, mousse, insecticides, perfumes, lighters, etc. in cars, and these items are likely to cause fires at high temperatures, especially in enclosed spaces.

Respond to the spontaneous combustion of the vehicle 1. Do a daily inspection. Check the oil circuit, especially the oil leakage of the chassis; check the circuit, especially the aging and modified cars.

2. The best choice for interior decoration materials is fireproof.

3. Immediately after the vehicle is parked, shut down the engine and check if there is a flammable source around it. Never park the vehicle near flammable materials.

4. Do not place flammable articles in the car where it is exposed to sunlight. Try not to smoke in the car.

5. The vehicle is equipped with a fire extinguisher, and check whether it exceeds the age limit. If there is a fire during the driving process, it should first be reported as soon as possible and the initial remedy should be made with the fire extinguisher provided with the vehicle.

6. When the car is driving under high temperature for a long time, it should be rested in the middle, and do not allow the car to long-term exposure.

Eyes and nose combined with ignorance of burning signs. Before the auto-ignition of the vehicle, blue or black smoke can be seen at the cover gap of the hood and near the instrument panel, and the meter can become bright.

Burnt flavor. The car emits a burnt smell and rubbery odor, which is also an obvious precursor to spontaneous combustion.

For vehicles over 4 years old that need to be purchased from fuel-insurance for more than 3-4 years, the “self-ignition safety” should be insured, and the new car is recommended to choose insurance for 1-2 years. The vehicles that have been overhauled or heavily modified and have a relatively long service life are the best vehicles for long-distance operation.

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