We all know that running on the highway will save fuel, but is it really faster and more economical?

At high speeds, some people think that a speed of 120 km h is the most fuel-efficient because the car engine runs smoothly and fast, and we can reach our destination in less time. This is the best solution in terms of time and fuel. But car owners who think so have forgotten to consider one factor, and that is the wind resistance of the car:

Theoretically, the faster the car, the greater the air resistance in a short period of time, so the car it will compensate for the air resistance. A lot of excess kinetic energy is generated, which will eventually be reflected in fuel consumption. As a result, the car has a top speed of 120 kilometers per hour, which is actually very fuel-guzzling.

So how much speed is the most economical in high-speed motor oil? The old driver said that in his own experience, he usually had a high-speed fuel burn of 100, and once he reduced his speed and drove at an average speed of 90 km/h, he found that he had more fuel consumption than usual. It has to go down.

With this experience, veteran drivers will basically drive at high speeds at an average speed of 90 km/h.

Some foreign institutions, when testing the economic speed of a car, found that the economic speed range of the car, whether it is a car, or an SUV, is about 60 km to 80 km. Although the fuel consumption gap is also reflected in the driver's personal driving habits, we will be more fuel-efficient when we drive at an economical speed, and we should have found ways to save fuel for our cars in general.

When driving at a speed of 110 km h, fuel consumption is; Fuel consumption of 100km h is; at 90 km h; At 120 km h, fuel consumption is l 100 km. In this case, it is recommended to navigate at a speed of 110 km h, since fuel consumption is not very high at 110 km h and time efficiency is guaranteed for everyone. When driving at high speeds, the speed limit is more than 80 kilometers in most places.

Therefore,We usually drive at 90 kilometers per hour, which can meet the standard speed limit and save fuel.

The economic speed of the car is about 80 kilometers per hour, and the 110 kilometers per hour on the highway has exceeded the economic speed, at this time the displacement, wind resistance and other factors of the car may lead to fuel consumption higher than the economic speed, you can try to reduce the speed of running at high speed, such as running 90 or 100 or so, at this time the fuel consumption will be significantly down. Because the closer you get to the economical speed, the lower the fuel consumption.

When driving at high speeds, they use gasoline more thoroughly, so the faster and more economical.

In fact, for the highway, this statement is not particularly true.

This is not the case, because the road on the highway is not rough, so the route is short.

Cars that drive at high speeds make more thorough use of gasoline combustion.

Fuel efficient.

The so-called economic speed refers to the most fuel-efficient driving speed of the car, due to the different power combinations of each car, the economic speed is also different, usually the economic speed of most cars is between 80-110, when the speed is lower or higher than this economic speed, fuel consumption will rise.

Generally, if these small displacement cars want to achieve the best fuel-saving state, then the best speed must be kept within 2000, so that the fuel consumption can also reach the minimum, converted to speed, that is, between 70 and 80, the reason why there will be floating, of course, is related to the difference in the displacement of some models.

Precautions for running at high speeds.

Greening trees in the highway ** separation zone.

It is generally very high, if you take the left lane for a long time, you will not be able to see the oncoming road conditions, in case of extreme circumstances, there is a vehicle on the opposite side of the road out of control and break through the guardrail, the consequences will be very serious.

In addition, driving next to a tall barrier for a long time will be particularly depressing, and you will have the illusion of leaning up. And in the leftmost lane, once you encounter danger, you can only dodge to the right, because the left side is the separation zone, and when you take the right lane, you can avoid danger on the left and right, and there is more room for maneuver.

The economic speed of the car is about 80 kilometers per hour, and the 110 kilometers per hour on the highway has exceeded the economic speed, at this time the displacement, wind resistance and other factors of the car may lead to fuel consumption higher than the economic speed, you can try to reduce the speed of running at high speed, such as running 90 or 100 or so, at this time the fuel consumption will be significantly down. Because the closer you get to the economical speed, the lower the fuel consumption.

Fuel is saved within a certain speed, and fuel is consumed if the speed is exceeded.

Because the highway can change the throttle infrequently, it can avoid too many braking and gear shifts, and the speed is the same at a constant speed, which is more fuel-efficient than the urban area; However, if the speed is too high, such as running at a constant speed of more than 120, it will cost a lot of fuel compared to a uniform speed of 80-90.

If you run at high speeds, whether it is a manual transmission or an automatic transmission that is fuel-efficient.

Running at high speed is at a constant speed, which is more fuel-efficient than usual.

In fact, many friends now think that when they drive at high speed, they feel that the road surface is flat, there are fewer curves, and there are fewer brakes that need to be stepped on. At this time, the speed of the vehicle can be maintained at a constant speed, so it is necessary to reduce fuel consumption. But in practice, I ran down and found that the fuel consumption became higher.

In fact, there are many factors that affect the fuel consumption of a car, but when driving on the highway, the drag coefficient and driving speed are the main factors that affect the fuel consumption of the car. Then this is because the economic speed of our car is 80 kilometers per hour, then our speed of 110 kilometers per hour on the highway is actually far exceeding our economic speed. Then at this time, factors such as the displacement of the car, wind resistance, etc.

The end result is that the fuel consumption of the car is higher than our economic speed.

We can try to reduce the speed of high-speed driving, such as 90 or 100 or so, then the fuel consumption of the car will be significantly reduced. Because the closer the car is to economic speed, the lower the fuel consumption will be in the end. Why do we use more fuel at high speeds?

Generally speaking, when we start the car frequently in urban areas, in order to overcome the ground resistance, the fuel consumption will increase, which is also the most fuel-guzzling road section. However, when the car is driving at high speeds, fuel consumption also increases. For example, in a car running at high speed, fuel consumption will increase rapidly.

Any car is designed with an economical speed range. For example, displacement, his economic speed may only be 65 kilometers per 100 kilometers, but displacement, at this time, his economic speed will be around 80 kilometers per 100 kilometers.

And by stopping the idle when the car is stopped, there is no need to consume additional gas, which improves fuel efficiency. However, stop-and-go is a common thing in many urban road conditions, so the automatic start-stop function does not seem to be very practical, so I recommend starting the car in a long traffic jam. The fuel efficiency of a car depends on the speed.

And driving at low speeds actually seems to improve fuel efficiency, but driving at a constant speed of around 50 kilometers to 80 kilometers per hour can improve fuel efficiency. On the other hand, if the car is driven too fast, the effect of air resistance will increase and the fuel efficiency will decrease. But if we increase the speed on the highway, the air resistance will increase in proportion to the speed.

If we are driving at a speed of 100 km 100 km, then most of the engine output will be lost due to air resistance, so it is better to reduce a certain speed on the highway and drive at a speed of 80 km 100 km 100 km. In fact, if fuel consumption is given priority when buying a car, then you should buy a small displacement engine, so that the comprehensive fuel consumption will be low and the body will not be heavy. We often set our speed at 80 km/h when we drive.

In fact, this is the most fuel-efficient. Then, if we want to continue to save fuel, we can only buy electric cars. Currently, BEVs are the most fuel-efficient of all cars.

This is because the speed of the car is generally very fast when running at high speeds, the temperature of the gearbox is very high, and the owner is relatively large, so the fuel consumption is higher.

Because the resistance of the wind is greater on the highway, and the speed of the car is generally faster at the highway, the engine is in a high-speed situation, which will consume more fuel.

Because when running at high speeds, the speed of the car is particularly fast, the air resistance is relatively large, and the fuel consumption will be higher.

There are many reasons that affect fuel consumption, the most important of which are the following aspects: net weight of the car, car styling design (drag coefficient), real-time road conditions and speed, car engine, transmission, safe driving habits, tire type and tire pressure. When driving on the highway, the drag coefficient (air resistance) and driving speed are the most critical factors that affect fuel consumption.

1.Effect of drag coefficient (air resistance).

Wind resistance coefficient: Air resistance is the highest and most important resistance that a car needs to encounter when driving. The level of the drag coefficient depends on the size of the exterior design and the speed of the car, the larger the total area of the windshield, the higher the speed, the greater the drag coefficient.

The larger the drag coefficient, the greater the air resistance and the higher the fuel consumption. Nowadays, the drag coefficient of cars is generally in the middle, and the drag coefficient of cars is about.

Generally speaking, the influence of drag coefficient on driving fuel consumption is not significant in low gears, but very large in fast gears. When the car is moving forward quickly, the appearance resistance is the most important air resistance**. The resistance caused by the appearance of the car** is in the front face area of the car and the vacuum pump area behind the car.

The larger the front face area, the larger the rear vacuum pump area, and the greater the resistance.

In addition, when the car is driving, the main performance of the fuel consumption of open windows for ventilation and non-open windows is particularly large, and the fuel consumption of open windows and even large clearance windows blow air conditioning. The key reason is that the wind resistance coefficient of the car is greatly increased by opening the windows.

Theoretically, a smaller drag coefficient is good for fuel efficiency. The smaller the drag coefficient, the more reliable and fuel-efficient the car is. It is said that every 10% reduction in air resistance will reduce the consumption of gasoline and diesel on top.

2.The effect of the speed of travel.

The engine of the car has its own performance curve, and its thermal efficiency is not fixed and will not change, in China under long-term load, low and medium speed, its thermal efficiency is the largest; At low load and low rpm, the thermal efficiency of the car engine will be reduced by half compared with the maximum efficiency of the car. Therefore, the car is also its own economic development speed, and the general car design scheme is 70 100km.

Driving on municipal roads, the car is often under the premise of small accelerator pedal, low speed ratio, and even standby speed, the high efficiency of energy conversion is low, and the fuel consumption is of course high; In terms of high speed, in the case of high thermal efficiency (economic development speed), it is mainly more fuel-efficient; If the maximum efficiency slip rate (economic development speed) is exceeded, the fuel consumption is also the same.

If the speed is increased by 1 time, according to the resistance calculation method, the resistance will be increased by 4 times, and the "consumption" of the car engine to get rid of air resistance will be greater, and the fuel consumption will naturally increase. Studies have shown that at speeds above 200 km, air resistance accounts for 85% of all driving resistance.

Because the speed of driving on high speeds is fast, the speed of the vehicle can be kept at a constant speed, and there are few corners, so the fuel consumption will increase.

It's because when running at high speed, we usually have to maintain a speed of 100 miles to run at high speed, which will definitely increase fuel consumption.

It is because when running at high speed, the engine of the vehicle is running at high speed and is always working. Therefore, fuel consumption is relatively high.

Many car owners will also find that there is a strange phenomenon in the fuel consumption of the car when they usually drive, because many people will find that when they choose at the beginning, many netizens will often hear that it is more fuel-efficient if they choose to run at high speed. But what I didn't expect was that if you run at high speed in your daily life, your fuel consumption may be higher. Many people usually want to save fuel, so they choose to take the high speed or increase the speed as much as possible in the process of traveling.

Fuel consumption is increased to a certain extentIn this way, you can make your fuel consumption better, but in fact, it is the opposite. Many people will feel that if they start the car frequently in the city, it is very likely that they will increase the fuel consumption of their car to a certain extent, or when they encounter some traffic jams, they may also be very fuel-guzzling. And some cars may feel that they are driving faster when driving on the highway.

When driving, the speed of the car is relatively fast, so the fuel consumption may be relatively small, but in fact, the higher the speed of the car, the higher the fuel consumption, so for some car owners, they should also know the influence of some factors in this regard. Therefore, in daily life, you can have a better understanding of your car, or know under what circumstances your car has less fuel consumption. In fact, from the data point of view, the fuel consumption of some cars is actually affected by a certain degree of factors.

There is a certain degree of relationship with wind resistance, first of all, there is a certain degree of relationship with wind resistance, followed by the speed or the deflection force of the ground rotation, etc., these factors are all related to a certain extent. Therefore, when this friction is relatively large, the greater the resistance, and the greater the power consumption. In this case, the fuel consumption will become more, followed by a kind of rev, and every car will have an economy speed on its uh data.

If the fuel consumption is minimal, the speed is also different according to different models.