2018 AUDI A8 Active Suspension HOW IT'S MADE and WHY

2018 AUDI A8 Active Suspension HOW works and WHY ?? 2018 Audi A8 - Revolution Technology

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Although the A8’s new chassis is good—there’s ample body control and isolation with the car’s standard air springs and adjustable dampers—the active-suspension models we drove weren’t yet fully baked. The optional Audi Intelligence (AI) active suspension, one component of a suite of intelligent features, includes an electric motor at each corner capable of raising or lowering that wheel via a torsion bar linked to the suspension. In effect, there are two springs on each wheel of A8s equipped with the active suspension: an air spring and a torsion bar coupling the wheel carrier to the electric motor. The motors and torsion bars eliminate the need for traditional anti-roll bars by enabling roll control as well as managing pitch and dive.

The active setup’s most promising feature, however, is the ability to float the A8’s body over road irregularities. The AI system scans the road ahead with a forward-looking camera (Audi calls the function Preview) and turns that data into wheel motions that follow the road’s shape. Before the front wheels encounter an elevated bump, the body is raised to provide the additional suspension travel needed to absorb the imperfection.