Industry: Snowmobiles
Location: Thief River Falls, MN
The Problem
Snowmobiles are typically operated across rough terrain, with many snowmobilers preferring to ride smoothly on gentler paths while “jumping” larger moguls. In order to navigate larger bumps, snowmobiles require an advanced suspension system to operate effectively through the toughest weather and most extreme challenges. Under these conditions, traditional shock absorbers often compress to the point of being unable to absorb the impact, the piston velocity exceeds limits for the piston position, and the vehicle “bottoms out.” The underside of the snowmobile hits the ground, the suspension components or other parts of the machine can be damaged, and the rider experiences a jarring, uncomfortable, or even dangerous effect.
Our Solution
We developed an innovative system through the power of electronics engineering to measure the shock absorber’s piston position and velocity for Arctic Cat’s snowmobiles. Using a microcontroller in real-time, the system adjusts the shock absorber’s stiffness by closing a valve when the piston velocity becomes too high for its position. The result is a soft ride across small moguls and also smooth, controlled operation across large mounds while preventing the dramatic “bottoming out” effect and any subsequent damage. Even in severe conditions and across rugged terrain, the snowmobile can adjust according to the situation.
