SH-AWD System: Operation

In a normal turn, the radius of the front wheels is shorter than the radius that the rear wheels travel. If the front and rear wheels are driven at the same speed, full power is not transmitted. The SH-AWD system monitors the speed of the front wheels and increases the speed of the outside rear wheel proportionally around the larger radius. This improves stability and steering response. On slippery surfaces, this provides the improved traction of a 4-wheel drive system.

Fig 1: Identifying Rear Differential Operation Diagram

Courtesy of AMERICAN HONDA MOTOR CO., INC.