[Aika car shopping guide original]
Endurance for pure electric vehicles is an inextricable pain, so it is necessary to improve the endurance from technical means, and the wind resistance coefficient of the car has a more obvious impact on the endurance of the electric vehicle, and each electric vehicle is also racking its brains in order to reduce the wind resistance coefficient. So today we will take a disk of low wind resistance electric vehicle models, when it comes to the wind resistance coefficient, it is actually only a link in aerodynamics, and wind resistance can not be confused.
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Wind resistance refers to the combined force of air resistance that the vehicle is subjected to during driving. The wind resistance coefficient refers to the key to the aerodynamic shape design of the vehicle, which is a mathematical parameter determined by the wind tunnel experiment and the sliding experiment, with which it can calculate the air resistance of the car during driving. The size of the wind resistance coefficient depends on the shape of the car, the greater the wind resistance coefficient, the greater the air resistance.
What does a low wind resistance coefficient do?
In the case of the same low wind resistance coefficient, the mileage of pure electric vehicles will be longer. It can also improve the acceleration performance of the vehicle. In addition, the lower wind resistance coefficient can improve the stability and safety of the vehicle.
In the ranking of the wind resistance coefficient, we use the reverse order to rank, that is, the wind resistance coefficient is from high to low. Having said that, the models that are famous on today's list have a drag coefficient of 0.2x and have successfully entered the low wind resistance club.
Conditions that affect wind resistance
1. Induce resistance
This resistance is mainly due to the horizontal force generated by the downforce when the vehicle is driving at high speed.
2. Differential pressure resistance
Differential pressure refers to the different pressure differences formed between the front and rear of the body, and the resistance formed by the pressure difference is called the differential pressure resistance. This is most evident in wind tunnel tests,
3. Interference resistance
Interference resistance refers to the bulges on the body, such as door handles, rearview mirrors, etc.
After nearly half a century of development and research, it has gradually come to the conclusion that the closer the "waterdrop" shape of the car, the wind resistance coefficient is relatively lower. What many people don't know is that the rear part of the car has a greater impact on wind resistance than the front of the car.
1. Porsche Taycan
Wind resistance coefficient: 0.22
Porsche Taycan's high appearance is only part of it, and Porsche's achievements in terms of wind resistance coefficient are not less than the value. The Porsche Taycan has a drag coefficient of 0.22,
So what is special about the design of the Porsche Taycan, which can bring such a low wind resistance coefficient?
The wind resistance coefficient | Porsche is at the bottom
2、Aion S Plus
Wind resistance coefficient: 0.211
The progress of domestic vehicles is obvious to all, especially in the field of new energy. So today's second model on the list is GAC Aion S PLUS from our domestic new energy brand.
3. Wisdom L7
Wind resistance coefficient: 0.21
4. Tesla Model S Plaid 2021
Wind resistance coefficient: 0.208
ModelS | a master of wind resistance coefficient optimization
5. NIO ET7
Editor's Comments:
In fact, the models that can be listed today, the wind resistance coefficient performance is among the best, and the difference between the wind resistance coefficients between each model is also very small, but it is the change of the two digits after such a decimal point, it can be said that it needs to be improved. Every bit of progress requires the relentless efforts of automotive aerodynamics R&D and engineers. In fact, because the body shape is limited by the laws and regulations of different countries and regions, for example, the wind resistance caused by the virtual rearview mirror is bound to be smaller, but the current law does not allow it to be carried on the mass production car, so it is left with more reverie in the future.
I'm proud. In today's many models, there are a number of Chinese brand new energy vehicles, and the wind resistance coefficient of some models has surpassed the traditional luxury brands such as Porsche, which proves that our automobile industry has stepped onto a new level, and we hope that in the future, we will have the opportunity to see more breakthroughs in technology of our Chinese brand models.
The NIO ET7 | ranks second in the world for mass production vehicles