Extended-range cars use engines to generate electricity, and then use motors to drive them. Is this "take off your pants and fart"?

Extended-range vehicles are the product of the new energy era. Since car owners are worried about the battery life of electric vehicles, they should fundamentally solve the problem. This kind of car is like this. You can charge or refuel. As long as there is a gas station, you don't have to worry about battery life. It seems to be no different from the traditional fuel car. However, it belongs to the ranks of new energy vehicles, and it can be unlimited, and you can hang a green card. The problem of worrying about battery life has also been perfectly solved. However, some people have questioned that using an engine to generate electricity and then using an electric motor to drive a car is not "taking off pants and farting"?

Why is there an extended-range car?

This kind of hybrid car has one thing in common. In addition to its own engine, it also has a battery pack, so the weight of the car itself will increase a lot and the energy consumption will increase accordingly. In this way, the problem of battery life has indeed been solved, but it is inevitable that some people will vomit. This is the case with extended-range vehicles. Many people think that since there is an engine, why should we add a battery pack to increase the weight? The person who said this sentence has not understood the meaning of new energy. Cancel the assembly of the battery, like the traditional model, there is no publicity highlight.

Why can extended-range cars save fuel?

Of course, even if the extended-range car is not good, with the help of the motor, its fuel consumption can be reduced a lot, which is beyond the reach of a single engine and motor. Judging whether a car saves fuel mainly depends on the thermal efficiency of the engine. However, if the engine wants to achieve the highest thermal efficiency mentioned by the manufacturer, it must be in good working condition, such as stopping and stopping in urban areas, and it is good to reach half the thermal efficiency.

With the help of the motor, the engine can be kept in a high thermal efficiency range whether it is started or at low speed. This is the same as running at high speed to save fuel. Long-term high-speed operation can keep the engine with high thermal efficiency. The motor efficiency of most new energy vehicles exceeds 90%. When the two are combined, the thermal efficiency of the engine will be improved, and the fuel consumption of the hybrid car will naturally be low.

Representative model?

The Li family is well-deserved, and together with Peng Automobile and Weilai Automobile, it is called the "Big Three" of the new forces in car making. The only difference is that Li is a hybrid car and the other two brands are pure electric. Li ONE does a good job in driving experience and space, but even the thermal efficiency of the engine is not high, which will affect the motor. The official fuel consumption data is 8.3L, but this data will be improved in the actual driving process.

Li ONE's pure cruising range is only 180 km, but due to the influence of environmental weather, the cruising range will be reduced a lot. In many cases, it depends on the engine to supply energy, so assembling an engine with high thermal efficiency and matching the two engines will also reduce fuel consumption. Moreover, vehicles with motors can recover kinetic energy, which can also achieve the purpose of saving fuel and electricity.

Therefore, as for whether the extended-range car is "taking off pants and farting", it is naturally a matter of opinion.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.