The rise in domestic oil prices in the early days, how to save fuel has become a topic of concern for many driving friends.
Brother Meow also talked about some fuel-saving methods before, and I also saw that some drivers on the Internet called fuel-saving skills, in fact, many of them are nonsense, either only saying the right part, or guessing by experience.
The following meow brother will talk to you about those skills that seem to be fuel-efficient but are actually not fuel-efficient.
One Slowly turn on the fuel saving
We all know that stepping on the accelerator brakes will definitely lead to increased fuel consumption, but too gentle acceleration is also not conducive to fuel saving.
The engine that accelerates too gently cannot achieve efficient work, because the acceleration time becomes longer, the efficiency becomes lower, and its fuel consumption will be higher, even 2-3 times higher than the aggressive acceleration, so the car is not driven slower and more fuel-efficient.
2. Early gear shifting saves fuel
Although in theory, the engine rotates slowly, the smaller the mechanical friction loss and the smaller the pump air loss, it is indeed able to save fuel.
But in fact, driving needs to be prejudged, if you hang up the high gear in advance, reduce the engine speed, may not predict to the back to carry out another acceleration.
In order to ensure sufficient power output, the engine needs a thicker mixture, and the driving computer will increase the amount of fuel injection, which will be more expensive.
Most models are almost 2500 to 3000 rpm around the gear shift is more appropriate. If you want to save fuel, you should reasonably control the gear, rather than blindly hanging on the high gear to reduce the engine speed.
Three even speed to open the most fuel-efficient
Many people say that driving at a uniform speed is the most fuel-efficient, which is not very rigorous, and driving at a uniform speed is fuel-efficient, but it is not the most fuel-efficient.
Fuel economy is not very high when cruising at low and medium speeds, because the engine load rate and fuel efficiency are not high at this time. In fact, it is more fuel-efficient to take the strategy of stepping on the throttle, then loosening a section, sliding over, and then stepping on the throttle.
Step a little, slip a little, step a little, slide a little more, so that the cycle is actually more fuel-efficient, provided that your road conditions are empty.
4. Taxiing in neutral gear saves fuel than sliding with gear
Many drivers agree that taxiing in the empty gear saves fuel, but in fact, this is only theoretical.
The taxiing distance is longer than when coasting in neutral gear, but when sliding with gear, the driving computer knows that you are taxiing, and it controls the engine without injecting fuel.
Just from the perspective of fuel saving, the two have their own strengths, in the most ideal case of ultra-long-distance sliding, the neutral sliding will be less resistant, so it will slide farther. But in reality, this is rare.
Someone conducted experiments specifically with different vehicles, and when the speed reached 50km/h, the loose throttle slid for 200 meters, and when the speed reached 50km/h, the loose throttle was loosened and hung up on the neutral gear to slide over.
The results show that under such a limited distance taxiing condition, the taxi with gear is significantly more fuel-efficient than the neutral taxi.
There is also the fact that it is not safe to skid in neutral gear, and automatic neutral sliding will cause the transmission to overheat if it is long.
Five refueling plus half is more fuel efficient
"Add half a box of fuel, the car is light and save fuel, especially in the summer, the oil is easy to volatilize." It sounds reasonable, fuel consumption is indeed related to the weight of the car, and hot gasoline does volatilize.
But in fact, this is not the case, adding half is not more than filling up to save any oil, at most it is tens of milliliters. Adding half a tank of oil is more than filling up the oil to go to the gas station once, and the oil that runs more than one trip may be more than these tens of milliliters.
Gasoline will volatilize from the tank, in fact, this is empiricism, the tank is closed, gasoline even if it is volatilized, it can not run, because the steam is collected by the carbon tank, the next time it starts, it will still be sent to the engine. So adding half the fuel won't make you more fuel efficient.
It is better to go to the gas morning and evening than to go at noon
Many people think that going to refuel in the morning or at night will be relatively more than at noon, junior high school physics talks about thermal expansion and contraction, high temperature at noon, cool in the morning and evening. At noon, the gasoline swells a little, and less oil is added. Theoretically, yes, gasoline heats up and expands.
But in practice, the gasoline of the gas station is basically not affected by the temperature difference, because the oil of the gas station is not stored in the fuel dispenser, but stored in the oil storage tank under the ground, also known as the "horizontal underground tank", because underground, the heat wave on the ground is difficult to transmit downward, so the temperature difference affected by the gasoline is very small, and there is no morning and late to refuel than to noon.
The above is what Brother Meow summed up for everyone, six kinds of so-called "fuel saving techniques" that seem to be fuel-saving but are actually not fuel-saving.