Talking about the hub motor, the black technology that allows the car to turn around on the spot

Because of the huge size of the engine

Traditional fuel vehicles must make room for it

or front

or rear

Or under the seat...

The electric motor is much smaller than the engine.

Therefore, many new energy vehicles will have multiple front trunks

What if you want to further increase the space inside the car?

Move the motor into the wheel!

Thus the hub motor was born

Because most of the transmission mechanisms are reduced

In-wheel motors can greatly improve the space utilization of cars

And less energy loss in the transmission mechanism

The transmission efficiency of the hub motor is also higher

As a "true four-wheel drive" with four-wheel independent drive

Wheel hub motors can achieve complex drive forms

For example, the wheels on both sides rotate in opposite directions

Thus achieving a U-turn on the spot

more importantly

There is plenty of space above the chassis for designers to play with

The appearance of cars is expected to break away from the existing framework

Sounds awesome

But why don’t I see anyone using it?

that is because

"There is a pound under the spring, and ten pounds on the spring" is a famous saying of modification

Restricts the development of wheel hub motors

Because the in-wheel motor will significantly increase the unsprung mass

Affects the vehicle's handling performance

The motor is integrated with the wheel hub

Will be directly affected by water, dust, vibration, etc.

Compared with the motor on the suspension

Status is not as good as before

certainly

The most important reason is money.

High cost and maintenance

It is destined that few manufacturers will pay for it.