With a car with a displacement of 1 5 driving continuously for 400km, is it necessary to lift the en

There is no need. Because today's car technology is particularly mature, it can dissipate heat independently during driving, so there is no need to do such a move.

There is no need at all, because the technology is already very good now, and the engine is able to cool down quickly.

Someone runs at high speeds, and every other distance, they go to the service area to turn off the car, and then open the engine compartment cover to dissipate heat. In my opinion, it is necessary to rest in the service area, but it should be the person who rests rather than the car, the machine does not know how to be tired, do not use people's subjective feelings to figure out the machine, the engine does not need you to "prevent heat stroke and cool down" for it. Conversely, maintaining a stable operating temperature for a long time can help reduce engine wear, which is why taxi engines tend to last longer than private cars.

The car cooling system can fully guarantee the engine running for a long time.

We all know that the role of the engine is to convert fuel energy into kinetic energy, and a lot of heat is generated in this conversion process. When the engine is running at high speed, the average temperature in the cylinder can reach 1000-2500 degrees Celsius, due to the limitation of internal combustion engine technology, this heating phenomenon can not be avoided, if the heat can not be dissipated, it will lead to the expansion of parts, the strength is reduced, the lubrication performance is reduced and other undesirable phenomena such as the engine is reduced. Because everyone understands this truth, many people will worry that after the car is driven for several hours in a row, the engine temperature will get higher and higher, so that it will be damaged and collapsed.

In fact, the engineers have already fully considered the problem of the problem that everyone is worried about as early as the development stage of the engine, so there is one of the most important systems on the engine - the cooling system.

The beauty of the cooling system is that it allows the engine to generate heat and dissipate heat to achieve a dynamic balance, so that its temperature is maintained at a specific level, which will neither rise with the increase of operating time nor decrease with the decrease of engine power, which is the classic "forced circulation water cooling system" design.

When you see the word "mandatory", you should understand that this system is not passively dissipating heat from the engine, but actively. It is composed of water pumps, radiators, cooling fans, thermostats, coolants, cooling channels and other components, and the working principle is to use coolant to absorb the heat of the engine, and then let it flow to the radiator to cool down with air cooling, and then return to the engine to absorb heat again, and so on. It is worth noting that the speed and efficiency of this cooling process is set in stone, but will be automatically adjusted according to the needs of the engine, and the hotter the engine, the faster the cooling rate, so that it can maintain a constant temperature at all times.

Therefore, no matter how many hours the engine runs continuously, it will not be damaged by temperature runaway.

All in all, it is indeed necessary to go to the service area to take a break often in order to avoid fatigue driving at high speeds, but if it is specially to dissipate heat from the engine, it is really redundant! It's still the same sentence - there is a kind of heat, called "the owner feels the engine is hot".

The operating temperature helps the engine to reduce wear, so no matter how many hours the engine runs continuously, it will not be damaged by temperature runaway.

No matter how many hours the engine runs continuously, it will not be damaged by the problem of runaway temperature.

Maintaining a stable operating temperature for a long time can help reduce engine wear, which is why taxi engines tend to last longer than private cars.

Don't use people's subjective feelings to figure out the machine, the engine doesn't need you to "cool down" it specifically

It was necessary to lift the hood up for ventilation in order to reduce the temperature of the engine.

It's not necessary, but it's good to be able to lift it up to disperse the air.

In my opinion, it is necessary to go to the service area to rest, but it should be people and not cars that rest, and machines do not know how to get tired.

Maintaining a stable operating temperature for a long time will help the engine to reduce wear.