Is it true that a large displacement must consume fuel, and a small displacement must save fuel?

Does a car with a large displacement necessarily cost fuel?

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When we buy a car, we always pay attention to the displacement of the car, which is what we call or so onBecause this displacement is generally a major factor in judging whether the car is fuel-efficient, the maintenance and later costs after buying a car may be a reference that will affect our car selection.

However, many of us always talk about large-displacement cars, and when it comes to the above cars, they feel like an oil tiger and not practical. In fact, it is not as terrible as everyone thinks, and the fuel consumption increases with the large displacement, although it looks like thisBut there is no absolute relationship between the two

Let's first take a look at what displacement is. Displacement is actually how fast the engine burns oil at a certain speed. That is, how fast or slow the engine does work.

WhileFuel consumption refers to the amount of fuel consumed by the car to drive a certain mileage. Fuel consumption represents how much work the engine does.

So does a car with a large displacement necessarily cost fuel? Actually, there is no direct relationship. This seems to be a possibility. Therefore, there is no direct relationship between fuel consumption and displacement, and it does not explain the problem.

So what does it have to do with our fuel consumption? In general, there are two:

First of all, it has a lot to do with the weight of our carThe heavier the car, the more work the engine has to do, and the more fuel it naturally consumes. Therefore, when we look at large displacement cars, the weight of the car is generally larger.

In addition, it is when the car is idlingThat is, the car does not move, but the engine speed is fixed, and the more useless work is done, the more fuel is consumed, so the large displacement will generally consume more fuel when idling.

Therefore, when we often take city roads, if the road conditions are not particularly good, small displacement cars are generally more fuel-efficient, but once we areIn the case of high-speed cruising or good road conditions, a car with a large displacement can actually output power very easilyHowever, if we look at a small displacement car, if it can't provide enough power, it will supplement the power by pulling up the rpm, and the higher the rpm, the more fuel will be consumed.

At this time, it is really difficult to say who will save fuel for cars with large displacement and small displacement.

SoWhen we buy a car, if you pay special attention to fuel consumption, it is recommended that in addition to paying attention to the displacement, we should also take a look at the weight of the car, which is a very important reference standard.

Nowadays, many car manufacturers will be very strict in the use of materials in these cars and even in the body, and they are striving to reduce the weight of the car in various parts.

It's not true, the displacement of the car should be inversely proportional to the weight of the car, the displacement is large, the car is lighter and more fuel-efficient, and the power is sufficient, if the displacement is large, the car is still heavy and not very fuel-efficient.

It's not true, and it also has something to do with other configurations in the car, as well as the power in the car, and then it has to do with the long-term air conditioning.

Not necessarily, because I think it depends on the car.

Small displacement is more fuel-efficient, but the power is insufficient; The large displacement is powerful, but the fuel consumption is also large.

Of course, this is only in general, after all, displacement is only one of the factors that affect fuel consumption, and the adaptability of the engine and the whole vehicle has a very large impact on the car.

If the adaptability of the engine with a small displacement is not good, it is likely that it will not be more fuel-efficient than the engine with a large displacement, and even more fuel-efficient than the engine with a large displacement. Especially for cars with heavy weight, if the displacement of the engine is too small, the use of small horses and large carts will inevitably make the engine run more at high speed and high load, thus consuming more gasoline.

In fact, it mainly depends on the environment and car needs, and it is generally only used to travel to work, and a small displacement is enough.

In fact, there are still many advantages of small displacement: first.

1. Energy saving. The fuel consumption of small displacement cars is basically below 6 liters per kilometer, compared with the general displacement of family economic cars below 14, 3-4 liters of fuel can be saved per 100 kilometers, and the social benefits are very obvious.

Clause. 2. Environmental protection. China's urban ambient air quality testing shows that 70% of the urban ambient air quality is not up to standard, with the rapid increase in the number of urban motor vehicles, motor vehicle pollution emissions have become the main air pollution in many cities.

Clause. 3. Economy. Small displacement cars can be called the best urban cars, ** cheap, generally less than 80,000 yuan, within the range of family economy.

Is it a large displacement or a small displacement? In fact, there is no good or bad question, it depends on your personal needs, large displacement cars have an absolute advantage in power, but relatively speaking, the fuel consumption is higher, small displacement cars are economical and affordable means of transportation, so it depends on your personal needs, if it is more recommended to travel small displacement.

The displacement is large and the fuel is consumed. Fuel consumption is higher for cars with higher displacement, as higher fuel consumption levels are seen in the low-speed and idling phases. However, if the traffic, road conditions and other conditions in the area are relatively good, the large-displacement model is still relatively fuel-efficient in the high-speed driving stage.

Generally speaking, if a large-displacement model maintains a low-speed and efficient output state during the high-speed phase, it is actually fuel-efficient, because it has a larger lung capacity than a small-displacement model and releases power more easily, while a small-displacement model will have some advantages at idle and low speeds.

Factors influencing the fuel consumption of automobiles

Advanced automotive technology: The technology of the car itself has a significant impact on fuel consumption. Compared with the cars of the last century, the fuel economy of modern cars is much higher, which shows the importance of automotive technology. The technologies related to fuel consumption are multifaceted, and the most important ones include several aspects:

The impact of the engine, the impact of the quality of the car, the transmission efficiency of the car, and the good condition of the car.

Engine effects are different for the same engine, and the amount of gasoline consumed at different speeds or torques is different. This is related to the temperature at which it is operating, the design of the intake and exhaust ducts, the octane number of the fuel, the compression ratio, the degree of carbon deposition in the combustion chamber, the intake and exhaust resistance, and other factors. Cars with diesel engines are usually more fuel-efficient than cars with gasoline engines because they are relatively more thermally efficient.

Engines with a large displacement consume more fuel than engines with a smaller displacement. Factors that evaluate the level of engine technology include the ratio of engine power to body mass and the liter power of the engine. Therefore, cars with a large displacement do not necessarily cost more fuel than those with a smaller displacement, which is related to their engine technology.

The influence of the quality of the car also plays an important role in the fuel consumption of the car. The quality of the car affects the rolling resistance, slope resistance, and acceleration resistance of the car, all of which affect fuel consumption. Reducing the mass of the car can effectively reduce fuel consumption.

The transmission efficiency of a car includes the efficiency of the transmission and the efficiency of the drive train. There are two types of transmissions: manual and automatic, and although manual transmissions are complex to operate, they do not have the efficiency loss of torque converters, so they have lower fuel consumption. Based on past experience, cars equipped with automatic transmissions consume 8% more fuel than those equipped with manual transmissions.

The higher the transmission efficiency of the drive train, the less mechanical loss and the better the performance. The power of the larger transmission output is large, but the transmission efficiency is low and the economy is poor. Therefore, when designing a car, you can increase the gear of the car, and you should choose the appropriate gear when driving.

If the displacement is large, it must be fuel-efficient, and if the displacement is small, it must be fuel-efficient, is this really the case? Many people will take into account the size of the car's displacement when buying a car, even if it is the same model, there are several displacement engines, so a large displacement must be fuel-efficient, and a small displacement must be fuel-efficient? This statement is not correct, under normal circumstances, the engine displacement will be large, the technology is different, the driving environment is different, all affect fuel consumption to varying degrees, there are many uncertain factors.

First, the reasons that affect the size of fuel consumption.

The small displacement car that stops and goes in the congested road section does save a lot of fuel than the large displacement car, because the power output is not large, and the small displacement engine has more advantages when it stops and does not go, but when it comes to the highway, the situation is just the opposite, the same model is driving at high speed, and the vehicle with a larger displacement is more fuel-efficient, of course, the difference in this displacement is not too big. Also at 120 km/h, the engine of the smaller displacement model may be maintained at 2,400 rpm, while the larger engine engine will only need to be maintained at 2,000 rpm. After a long time, you can see which fuel economy is more efficient.

Second, the relationship between displacement and fuel consumption.

Displacement is the speed of fuel combustion of the engine at a certain speed, and fuel consumption is how much fuel is consumed by the car to drive a certain mileage, such as walking 1 km, then an adult and a child, who will be more tired, who will consume more energy, this seems to be possible, so fuel consumption and displacement are not directly related, and it does not explain the problem.

III. Conclusion. In short, the heavier the car, the more work the engine has to do, and the more capacity it naturally consumes, the car does not start, but the engine speed is fixed, and the more useless work is done, so the large displacement car will generally consume more fuel when it stops and goes. If a car with a small displacement can't provide enough power, it will increase the speed to supplement the power, and the higher the speed, the more fuel will be consumed.

Therefore, it is necessary to choose the displacement according to your own use occasion.

It doesn't have to be this way, because some cars perform well and some perform badly, and it also has to do with the fuel consumption of the car, and it also has to do with the design of the car, so I don't think it's necessarily the case.

Not necessarily, the specific degree of fuel consumption is related to your driving speed, body weight, and when you usually idle, it is related to road conditions, and it cannot be said by the size of the displacement.

Yes, in general, the larger the displacement, the more oil the engine needs, so it is more fuel-intensive.

For the performance of automobile fuel consumption, I believe that this nuclear companion is an important information that most friends pay attention to. For the sentence "if the displacement is large, there must be there, and if the displacement is small, it must be fuel-efficient", it is not a completely suitable statement for cars. If you want to make your car have a better fuel consumption performance, in addition to the reasonable combination of car machinery and hardware, your driving habits are also a very important part.

A larger displacement does not necessarily consume fuel, and a smaller displacement may consume more fuel.

First, the reasonable combination of automobile hardware will make fuel consumption more excellent.

For two cars of the same importance, it is not that a large displacement will necessarily consume fuel, but a small displacement will necessarily save fuel. Only the most important motivation for the car itself is the best and reasonable match, to prevent the occurrence of a "small horse-drawn cart" situation, at which time the small displacement will appear more difficult and stupid and more fuel-intensive. If you have an engine with too much displacement, it will indeed increase fuel consumption, but the engine will become more powerful.

Therefore, when we buy a car, we must pay attention to the engine displacement and the weight of the car itself, so that we can choose a more suitable car.

2. How can I make my car more fuel-efficient?

If you want to make your car more fuel-efficient, you must develop a good driving habit. When driving on the road, you need to predict the road conditions in advance, try to avoid sharp acceleration and sudden braking, and try not to be in the process of changing lanes for a long time, because changing lanes will also increase the fuel consumption of the car. Don't be greedy for cheap and add some low-quality gasoline, which will not only increase the fuel consumption of the car sharply, but also cause great damage to the car engine; Strictly adhering to the car maintenance cycle and regularly maintaining the car is also a good way to reduce the fuel consumption of the car.

In the process of driving a car, do not violate traffic rules by reducing the fuel consumption of the car, and you need to have a good sense of car driving safety.

This sentence is not suitable for cars, because some cars although the displacement is very large, but it is more fuel-efficient, fuel consumption can not only look at the displacement of the car liquid Yingqing, road conditions, driving habits will affect fuel consumption.

This sentence is reasonable, because cars with large displacement have a high amount of waste oil, and cars with a small displacement have less waste oil, but taking a round is also related to the driver's driving habits.

This sentence is not very suitable for cars, the displacement of the car should be inversely proportional to the weight of the closed car, the displacement is large, the car is lighter and more fuel-efficient, and the dynamic nuclear state is sufficient, if the displacement is large, the car is still heavy and not very fuel-efficient.