Dynamic duty drawback calculations

List of contents of this article:

• 1、Dynamic duty drawback calculationsWhat is the cause of the spontaneous combustion explosion of pure electric vehicles
• 5, The Volvo XC90 hybrid car suddenly exploded. What was the cause of the explosion?

Why does the car leak explode

Because the car is driving at high speed, the engine will release a lot of heat. If the car's oil spill meets the heat of the car and reaches the ignition point of gasoline It will cause a fire, which is very dangerous.

All combustion is carried out in gaseous form, and the explosion is caused by a relatively violent combustion with a sharp increase in pressure in a certain space. After the vehicle leaks oil, the fuel evaporates to form a certain concentration of combustible gas, which will explode when it encounters an open flame.

The flamming point of gasoline is extremely low and flammable, so as long as the car explodes or burns, it is caused by gasoline.The ignition point of the oil is extremely high, and there is almost no possibility of explosion. At most, it plays a role in fuel when the car burns.

The ignition of the electronic original on the car is easy to cause oil leakage and fire explosion, and the metal collision on the car is also easy to produce sparks and explosions.

The front oil seal of the crankshaft is cracked and damaged, aging or the contact surface between the crankshaft belt wheel and the oil seal is worn, which will cause oil leakage at the front end of the crankshaft. The oil seal at the rear end of the crankshaft is broken and damaged, or the oil return hole of the rear main bearing cover is too small and the oil return is blocked, which will cause oil leakage at the rear end of the crankshaft. In addition, attention should be paid to whether the oil seal at the rear end of the camshaft is leaking.

How did the car explode?

Put gasoline into the hood. Use high fire to ignite gasoline, causing a vehicle explosion.Adding more catalysts, such as liquefied gas cylinders and other combustibles, can accelerate the explosion process. Keep the engine of the vehicle on.

There is a problem with the oil route of the car, resulting in oil and liquid leakage. It is the aging or improper connection of the vehicle wire that causes a short circuit or sparks. It is due to the combustion of flammable items caused by high temperature. The fire is caused by a vehicle impact or a machine part failure.

Analysis: Modern cars should be said to be very safe. The explosion scenes in film and television dramas are specially treated or man-made explosives. In reality, the probability of an explosion is about a few in ten thousand. It must be a head-on impact on the fuel tank and the force is strong enough, or the fuel tank has been exposed to high temperatures for a long time to explode.

Sometimes it just hits the fuel tank and causes cracking gasoline to leak out, coupled with the sparks generated by the encounter, the consequences are fire and causes an explosion.Of course, the factors affecting the above situation may be multifaceted, such as the severity of the car accident, the quality of the road conditions, the part of the collision, the grade and safety performance of the vehicle, etc.

That's an explosion of the car's fuel tank. However, it is not that the car will explode after overturning. If the gasoline leaks after the car overturns and hits an open flame, the fuel tank will be baked by the fire, causing the pressure in the fuel tank to increase. After exceeding the limit, the fuel tank will burst, and a large amount of gasoline will be discharged, causing more violent combustion.

Why does the car spontaneously ignite and explode?

1. Reason 1: Circuit aging. After a period of use, the wires of the car will age, and the external insulation layer will fall off. Circuit failure or poor wire contact will cause a short circuit, thus causing spontaneous combustion.

2. The main causes of spontaneous combustion of cars: leakage, grounding, oil leakage, electrical faults and short circuits, and excessive contact resistance.

3. Circuit aging The engine compartment of the car is full of various electronic components and wires. If leakage or short circuit is caused by the aging and damage of the outer skin of the wire, it is easy to cause an open flame, resulting in spontaneous combustion of the vehicle.

4. The aging of oil lines and lines causes spontaneous combustion. In most cases, the spontaneous combustion of the vehicle occurs in the engine compartment.

5. The causes of spontaneous combustion of automobiles may include oil line problems, wire aging, sparks caused by wire short circuit, combustion of flammable substances caused by high temperature, vehicle collision, mechanical failure, excessive accumulation of oil sludge, etc.

What is the cause of spontaneous combustion explosion of pure electric vehicles

[Pacific Automobile Network] The reasons for spontaneous combustion of electric vehicles include poor battery heat dissipation, long-term use in high-temperature environment, aging of vehicle internal parts, aging of lines, low design requirements of battery management system, excessive charging time, and sealing of charging environment Closed and poor ventilation, etc.

The causes of spontaneous combustion of electric vehicles include poor battery heat dissipation, long-term use in a high-temperature environment, aging of vehicle internal parts, line aging and damage, low battery management system design requirements, long charging time, and poor ventilation of the charging environment. When the car is driving, the battery is in a state of heat dissipation due to the action of airflow.

The reason for spontaneous combustion of electric vehicles is: the aging of the internal lines of electrical appliances. The only solution to this situation is regular maintenance. Don't go to the repair shop to see if there is no problem when you buy it. It's better to go to the repair shop every year;Water enters the interior of the electrical appliance. In this case, do a good job of waterproofing and try to avoid charging outdoors on rainy days.

What is the cause of the sudden explosion of the Volvo XC90 hybrid car?

1. The reason for the explosion may be the aging of the motor or the placement of flammable and explosive items in the owner's car, or the explosion caused by excessive battery temperature.There was a charging explosion in the underground garage. Fortunately, there were no casualties.

2. The latest news said that the reason for the explosion of the vehicle was that the owner installed a gas stove for camping in the trunk and forgot to turn off the gas cylinder switch, which led to the incident.

3. Because the owner installed a gas furnace in the trunk, the cause of the explosion is likely to be due to the gas furnace explosion, but fortunately, there were no casualties. However, the vehicle has been seriously damaged, and if it is finally confirmed that it is a gas furnace explosion, the owner is likely not to receive insurance compensation, and the vehicle maintenance costs may have to be paid by himself.