Why do the exhaust gases of some sports cars spray fire?

Why do the exhaust gases of some sports cars spray fire?

When watching a car race, when you hear the car slowing down in a corner, sometimes it will make a very deafening thump, just like shooting. This is the sound of exhaust pipe tempering, and its English technical term is tempering. What racing cars need is the ability to quickly increase the spindle. Therefore, compared with the engines of ordinary civilian vehicles, racing engines are often set in the state of fuel enrichment, and the mixing ratio is adjusted to be very rich, so that more fuel can participate in combustion and release energy. At the moment of sudden oil collection, there will always be some unburned mixture entering the exhaust system, which will be ignited again by the hot exhaust pipe and deflagrate (the loud noise at this time is the shooting sound you hear). In addition, in order to reduce the exhaust back pressure and improve the power, the exhaust pipes of racing cars are mostly linear, and there is no three-way catalytic package and muffler for civilian cars, so there will be this undisguised deflagration sound, and even flames can be seen from the end of the exhaust pipe in serious cases, which makes people feel very *. Compared with naturally aspirated engines, racing engines with turbocharged engines are more prone to backfire because most of them are equipped with so-called partial ignition systems.

The engine adjustment settings of those super sports cars are more like racing cars, so the tempering principle is similar.

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Can a real sports car breathe fire?

That should be; The reason why the exhaust pipe will catch fire is that when the car suddenly receives a large amount of oil after stepping on the accelerator again, excessive oil and gas will leak into the exhaust manifold through the exhaust valve. This combustible gas will be ignited by the high heat of the manifold, rush out of the exhaust pipe along the exhaust pulse and be released into the air. From the outside, it looks like a flame from the exhaust pipe. This situation is common in racing cars or modified cars, mainly because the engine compression of such cars is usually high, coupled with high-angle camshaft, heavy oil supply adjustment and other factors, the exhaust pipe will catch fire after the oil is collected by the big foot throttle.

This modification does exist in the market. The principle is to install a spark plug at the outlet of the tail section of the exhaust pipe. As long as you press the button in the car, you can synchronously control the injector to spray more oil, and at the same time ignite the discharged oil and gas to cause a fire. However, this is a bit of a waste of fuel, and I can't see any change except "playing handsome"

Why does sports car exhaust spew fire?

That's called off-time ignition, which is generally only available in super-efficient cars (such as modified super sports cars and racing cars), that is, when shifting gears (mostly when downshifting), the exhaust pipe catches fire, and the vehicle nitrogen equipped with nitrogen device will also explode.

Why do sports cars breathe fire?

If the gasoline is not completely burned, some of it will directly flow out of the exhaust pipe, but the temperature of the exhaust pipe is very high, which directly reaches the ignition point of the fuel. At the same time, gas is ejected from the exhaust pipe, so it looks like a fire.

What sports car can always breathe fire?

Khan is related to this engine. It is estimated that the supercars on the 5 million can be Lamborghini, pagani, Bugatti and so on.

The technology of "partial ignition" is simply to change the driving computer. When entering the bend to collect oil, the fuel is still injected into the cylinder, but it is not ignited, so that the gasoline remains foggy and then enters the exhaust system. The atomized oil-gas mixture will detonate when it enters the high-temperature exhaust pipe, and the gas will expand instantly. When refueling again, the delay will be small. This kind of fire only happens when the car slows down.

Because some modified cars use direct exhaust and the exhaust system is short, in order to increase horsepower, the fuel injection quantity is often increased. When the engine speed is high, if the dense oil and gas are not completely burned in the cylinder, they will be discharged from the engine, and then continue to explode and burn after being discharged from the engine. In this case, the flame can be seen in the exhaust pipe.

How is it that the exhaust pipe of the car will spray fire?

Car helper: The main reason why the exhaust pipe will catch fire is to check whether the ignition time of the engine is too late, whether the mixture is too thick and whether there is no cylinder.

Reference information: car help question and answer

Why does the exhaust pipe catch fire after the sports car shifts gears?

When the rotating speed is high, a part of gas is discharged without burning in the cylinder, accumulated in the exhaust pipe, ignited by the high-temperature hot gas of the re-opened exhaust valve, and the exhaust pipe catches fire.

Why do some racing cars, sports cars and exhaust pipes breathe fire?

When the rotating speed is high, a part of gas is discharged without burning in the cylinder, accumulated in the exhaust pipe, ignited by the high-temperature hot gas of the re-opened exhaust valve, and the exhaust pipe catches fire.

Why do the exhaust pipes of some cars, usually sports cars, catch fire?

Specifically, the incomplete combustion mixture is ignited by the high temperature in the exhaust pipe.

Why does the exhaust pipe of Lamborghini sports car spew fire? ?

Lamborghini flamethrower, because of its large displacement, can't burn each other's oil, and the burning gas is exhausted before it is discharged, so you can see the exhaust pipe spewing fire ~ Generally, cars with large displacement will have it ~ even after running for a while, you can see the flame when shifting gears or refueling doors ~