When we usually drive on the highway, we generally maintain a speed of 120 km/h, because this speed is also the maximum speed at which the vehicle is limited by high speed. Recently, some riders have asked how much speed is the most fuel-efficient on the highway, and whether the usual speed of 120 kilometers per hour is the most economical speedWe also consulted a lot of veteran drivers and experts on this issue. From their mouths, they know that 120 kilometers per hour is not the most economical speed, and many people say that only by running a high speed can they understand the difference between running 120 and 100.
Factors that affect fuel consumption
First, the weight of the body
At present, the cars on the market are divided into sedans and SUVs, and comparatively speaking, SUVs will have higher fuel consumption. After all, the overall weight of an SUV is greater than that of a sedan, and the same type of sedan depends on which model weighs more. Because the heavier the vehicle, the more fuel it consumes. The vehicle needs to overcome the resistance of the air during driving, as well as the friction with the ground. When the speed of the vehicle increases, it inevitably causes an increase in air resistance, which means that the engine needs more force to overcome these resistances. The power of the engine ** is the fuel, and there is no doubt that the heavier the models on the market, the greater the fuel consumption.
Second, the displacement of the car
Cars are large and small in terms of power, and as ordinary household models, they generally use self-priming or small-displacement turbos. The fuel consumption of this type of vehicle is not high, but there are many models that increase the displacement in order to pursue power. Example 20T high-power engine, which has a larger displacement and more powerful power. Fuel is the core driving source of the engine, and more fuel consumption is required to generate more torque. Therefore, more powerful cars tend to have higher displacement, and at the same time, the required fuel consumption is higher.
3. Road environment
Why is there a big difference in fuel consumption between driving in the city and driving on the highway?This is due to the road environment, there are many traffic lights in the city, and there are often traffic jams. The car will face multiple stops and starts, and for the car itself, the fuel consumption is the highest at the moment of starting. Therefore, the fuel consumption of driving in the city will inevitably increase, and if you choose a national highway or high-speed driving, the fuel consumption of the whole journey will be correspondingly reduced. The road environment also has a great impact on the car, so we might as well choose public travel.
High speed is the most fuel-efficient speed
So at high speed, what kind of speed should we maintain to be more fuel-efficient?In fact, this speed of 120 km/h is more fuel-intensive, and many drivers will turn on the cruise control on the highway and keep it at 120. If you drive on the right lane on the highway and set the speed between 100 and 110, the corresponding fuel consumption will be reduced. Fuel vehicles have an engine and a gearbox, and the gearbox also plays a certain role in the fuel, such as the more gears, the better its fuel economy. Because even if it runs to 120, it only rotates between 1000 and 2000 rpm.
Of course, this refers to more high-end cars, and most family cars use 6 or 7 gear ratios. As long as 120 is reached at high speeds, the rpm will also increase. Generally, at the speed of 120, the speed is above 2000. If you keep the speed at 100 110 at high speeds, the revs will also drop slightly, basically staying at 2000 rpm or less. The lower the rpm, the less fuel the engine needs and the less gasoline is lost. Therefore, most models are recommended to maintain a speed of 100 110 on high speeds, which is the most fuel-efficient speed.
Conclusion:
Here I would like to remind everyone that when driving at high speeds, safety must be the first priority. Of course, at 100 km/h at high speeds, there is no problem in the right lane. In some specific situations, it is still necessary to increase the speed, such as changing lanes to overtake. How fast do you maintain when you're driving at high speeds?