BYD is Yang Wang to the debut of U8. The most topical thing is its "Easy Sifang" platform technology.
The core of this platform is to use four independent motors to individually control the four wheels. Let's see what technical features it has?
Easy Sifang Technology
Its internal logic is very simple, because the four wheels can be independently controlled by four motors, so each wheel can move forward, reverse, accelerate, and decelerate independently, so that the vehicle has a super body posture adjustment capability.
For example, when the four wheels actively decelerate, the braking effect is achieved. The official said that even if the driver does not step on the brakes, the zero-speed braking can reach 40 meters, and the braking force independently generated by the four-wheel motors can exceed 1 g.
This data is quite scary. You must know that the maximum acceleration g value of an electric car in 067 seconds is only about 0.6g. Another example is that there is no need to turn the steering wheel, only the motor controls the inner wheel to reduce the speed, and the vehicle can turn.
Officials say the turning diameter in this case is about 12 meters. For another example, when a tire blows out, strong resistance is generated and the lateral moment of the body is out of control. At this time, the system can recalculate and distribute the torque to the four wheels, thereby generating the opposite moment to straighten the body.
Even at 120 km/h, there is no need to worry about losing control of the car body, even if the tire blows out at a high speed. For another example, a 360-degree U-turn on the spot can be realized by applying torques of equal magnitude and opposite directions to the left and right wheels.
Finally, a brief summary, because the four wheels can be controlled independently, it opens up a whole new world for the improvement of vehicle stability and flexibility. At the same time, due to the independent control of the four wheels, the transmission shaft and differential device are omitted, which saves space and improves efficiency.