Is neutral rolling fuel efficient, and what are the benefits and disadvantages to the car?

Coasting is fuel-efficient, but it also acts as a cushioning for the engine.

Today's EFI trucks are computer-controlled and precise fuel injection, even if they coast in neutral gear, they are also injecting fuel.

Previously, the carburetor coasted in neutral to save fuel.

It's recommended not to coast in neutral because it's not fuel-efficient at all, and it's very unsafe.

If the EFI car basically can't save much fuel, when the engine is working at low speed, in order to achieve the best fuel efficiency, the ECU is very small, when you are in neutral coasting time, suddenly refueling, the ECU will think that it is accelerating and overtaking, it will be larger than normal Under normal circumstances, the set oil output will be larger, you only save in front of it, and it will be used up when you accelerate, so you can't save anything, and it is unsafe to coast in neutral because the vehicle's braking system now needs the engine to provide power and electrical energy, and your engine is at low speed, but when the car is coasting at high speed The braking system does not get enough power, which will affect the braking effect, and it is recommended not to coast in neutral gear, which is very bad.

It's not good, I heard that the brakes will fail.

Different speeds and road conditions The performance of taxiing is not the same, and it should be treated differently. Slow coasting in urban areas is fuel-efficient, and high-speed situations are generally about the same.

This is not recommended, especially at high speeds, as security will be greatly reduced.

Now the car is basically EFI truck, neutral coasting can have a fuel-saving effect on the ground, downhill because the EFI engine will meet the conditions of the fuel cutting mechanism, the gear coasting is more fuel-efficient than the neutral coasting, and the neutral coasting due to no engine traction, the wheel grip is small, the most likely to lose control of the accident, neutral coasting can save fuel when flat, there is no other benefit.

Neutral sliding has the same effect as coasting with a clutch, and your engine is running at idle speed anyway.

For safety, it is best not to slide in neutral gear or step on the clutch, if there is a sudden situation that requires emergency braking, there is no engine counterforce, your braking distance is long, and second, it is easy to drift or shake when braking suddenly.

Neutral sliding oil can not save a little, after all, the coasting time is much less than stepping on the accelerator time, and the gear coasting is only a few tens of meters less than the clutch coasting, if the front is a red light, you neutral or clutch coasting to stop there idle waiting for the oil, not at all less than your gear sliding, after all, it is the gear sliding, your throttle is released, and the oil sprayed into the engine is still the same as idling. So theoretically speaking, if your car is scrapped, you can't save a tank of fuel when you die, and you may be able to save a few liters of fuel in more than ten years.

Neutral coasting does save fuel, but that's been around the last century. Veteran drivers who have driven cars for decades must be very familiar with carburetor cars, in those days, there was no engine technology such as EFI and direct injection, and carburetor was the only way to supply engine fuel.

Carburetor injection is purely mechanically controlled, and no matter what gear the gearbox is in, as long as air enters the intake tract, the corresponding gasoline will be sucked in to participate in the combustion. Even if the driver releases the throttle and coasts at high speeds, the engine still generates enough low pressure during the intake stroke to cause a large amount of gasoline to be drawn into the carburetor cavity, resulting in unnecessary fuel consumption. When in neutral, the engine only needs to keep idling, and the engine speed is very low, and the fuel consumption will naturally be reduced, so for the old carburetor cars of that era, neutral coasting can really save fuel.

With the development of engine technology and the country's increasing requirements for emissions, almost all cars that can be seen on the street use electronically controlled fuel injection. This kind of EFI engine is controlled by the engine computer (ECU) for each cylinder with independent electronically controlled fuel injector, with the function of overspeed and deceleration fuel cut-off, simply put, the EFI engine is in a state-off state when coasting in gear, and is fuel-injected when coasting in neutral gear to maintain idling. Therefore, the argument that neutral coasting is fuel-efficient does not work at all for current models, but is more fuel-intensive.

So the neutral fuel economy is only for those old carburetor cars, not for the current EFI cars.

Remind all drivers, please try not to coast in neutral gear, not only can not save fuel, but also there will be potential safety hazards.

The short ride distance is not fuel-efficient, but it also does not cost fuel, and the longer the coasting distance, the more fuel-efficient. I've been rolling in neutral, and 600 kilometers can save nearly 100 kilometers of road city.

It depends on the actual situation, and a long idle time will definitely save fuel.

There are different opinions on the Internet, and I personally think that coasting in neutral gear must be fuel-efficient, but it is not safe to coast with gear. There will be a braking effect in the gear, and the neutral gear may lose power and lose the braking effect, which is dangerous.

It is a hand gear, and the neutral gear is fuel-efficient; Not necessarily with automatic transmission.

Rolling in neutral is not safe.

Neutral sliding, gear sliding, driving fuel-saving, car information, car knowledge.

First of all, it is fuel-efficient to coast in neutral, whether it is EFI or carburetor. Some people think that EFI towing gear coasting is fuel-efficient, this statement comes from the EFI vehicle deceleration and fuel cut-off function, the EFI vehicle will cut off the fuel supply when the vehicle is slowed down according to the speed of the vehicle and the position of the throttle. Some people think that according to this principle, when the EFI vehicle drags the gear, the fuel injector will not inject fuel, which will save a lot, which is a wrong idea.

You should know that when you slide in towgear, there will be engine braking, and the distance you glide in neutral is less than half, or even less, and it is more obvious when you go down a long slope, and the neutral slide will be faster, and the slide with gear will be slower. At this time, the fuel consumption of the space-time gear slip idle speed is very small, and the fuel saved by the gear slip is re-accelerated, and the fuel cost is much higher than the fuel saved when running to the neutral coasting position. Therefore, don't believe that EFI is fuel-saving with gear sliding, there is no factual basis.

However, it is safe to coast with gear.

Neutral slip = fuel consumption at idle,