How does the motor assist and what is a torque sensor?

The torque sensor of our e-system measures the power that you exercise on the pedals and at what frequency you pedal. He then adapts its assistance accordingly. The assistance will increase steadily along with the pedalling force.
When it becomes more difficult to pedal, for instance due to a hill, or when you push harder to increase your speed, the motor will recognize that you have a harder time to ride or you want to go faster and will increase its assistance.
Because the power output increases with the pedalling force, our bikes convey a very intuitive riding sensation.