Why is it sometimes more expensive to open ECO mode?
Just like: healthy meals are for people who lose weight, right? Losing weight is really helpful, but for friends who need to gain weight and be thinner, they are not hungry, but getting thinner.
Why is there a situation of excessive fuel consumption?
ECO mode saves fuel consumption by sacrificing power. In fact, ECO mode saves fuel by sacrificing power.
There is a paper in Automotive Technology magazine, which mentioned the influence of economic driving mode on automobile emissions and fuel consumption results.
ECO mode can save fuel by adjusting the throttle opening corresponding to the throttle pedal, the shift logic of the gearbox and the air-fuel ratio of the engine.
Needless to say, to tell you the truth: turn on the mode and step on the accelerator. The message it received is 100, and now it is 80.
With less fuel injection, the speed of gearbox shifting is lower, that is, the power is worse and the fuel consumption is lower.
It's a bit like: it's also a 5-yuan hand-grabbed cake. In the past, it would get an extra egg. Now, he said, "eggs need extra money."
Hand-grabbed cakes have become more expensive, and the taste is not as good as before, something like that.
When power is needed, fuel consumption will increase.
Because the oil saved is obtained at the expense of power, when you want power, you have to step on the accelerator deeper and consume more fuel.
Or refer to the article "The Influence of Economic Driving Mode on Vehicle Emissions and Fuel Consumption Results" just now.
In the case of rapid acceleration or high speed, the vehicle should give priority to ensuring power output and turn off the ECO driving mode.
What do you mean? It's just that when you start the ECO mode, you think the car is too "fleshy" and you will step on it harder, right?
At this time, the ECO mode will temporarily fail, which is equivalent to driving with a big foot throttle, and the fuel consumption will naturally go up.
A cup of sugar water, you drank: "No sugar, what's the matter?" I didn't expect all these sugars to melt, and they were all at the bottom. If you take a bite, it's really sweet. That's the truth.
I said in the previous video: the fuel consumption difference between the big foot accelerator and the light pedal can be about 20%.
ECO mode can save less fuel.
There is a paper in Automobile Engine magazine, which mentioned the research on the control strategy and application technology of economic driving mode.
In the experiment, the car can save fuel14% at 30% throttle opening; 50% throttle opening can save fuel 18%.
In other words, the big foot throttle will increase fuel consumption and save more than the ECO mode.
Every morning you save 1 yuan in 2 yuan, and you miss a steamed stuffed bun, but you are hungry before lunch time.
I can't take it anymore. I handed in 10 and had a snack. Instead of saving money, I spent more than before.
As for how much throttle opening will make this ECO mode invalid?
The journal articles "Automobile Engine" and "Research on Control Strategy and Coping Technology of Economical Driving Mode" have been mentioned above.
When the throttle opening is greater than 70%, the ECO mode has no influence on the power performance of the whole vehicle, which can ensure the power demand. When the throttle opening is less than 70%, the power will be limited, which is obviously less than the normal mode.
In this paper, the experimental vehicle is accelerated to 100km/h with the throttle opening of 50%, and the time is prolonged by 39%.
You should pay attention to: different cars may not lose the ECO mode at 70% throttle opening, but basically they have to step on the throttle more than half.
Therefore, for friends who are "passionate" in driving and those who are poor and need motivation, the ECO mode becomes a fuel consumption mode.
Long-term ecological model leads to the increase of carbon deposition.
In addition, long-term use of ECO mode may increase carbon deposition, which, as we all know, leads to increased fuel consumption.
ECO mode keeps the engine at a low speed and reduces the shift speed, just to save fuel, right? What else will it lead to? The intake and exhaust speed is relatively slow.
There is a paper in Automotive Application magazine, which mentioned the causes and effects of engine carbon deposition.
If the car is in a low-speed state for a long time, the mixture can not be fully burned, and carbon deposition will gradually form.
The most fuel-efficient working condition of ECO mode is precisely the low speed state.
ECO driving mode, low-speed operation stage can highlight the advantages of fuel economy. Urban traffic jams, long-term low-speed operation conditions are like this, right?
So: ECO mode is very suitable for long-term stop-and-go urban road conditions. But again, if the oil is saved, the carbon deposit will increase.
It takes a little time, not that I will accumulate carbon tomorrow as soon as I start this mode today, but that if it takes a long time, the money saved by using oil may not be enough to remove carbon deposits.
The economic model saves fuel by sacrificing power.
Therefore, in general, the ECO mode aims to save fuel by sacrificing power.
But people who often have to step on the accelerator need a lot of power, or I just bought a 3.0, 4.0, 6.0 car, so don't think about the economy model. It's not economical at all.