MagneRide

MagneRide is a semi-active suspension technology developed by Delphi Automotive (now Aptiv) and currently produced by BWI Group. The system uses magneto-rheological (MR) fluid within the shock absorbers. This fluid contains suspended iron particles that respond to a magnetic field.

When no magnetic field is applied, the MR fluid behaves like a normal oil, allowing relatively free movement of the shock absorber piston. When a magnetic field is applied, the iron particles align, thickening the fluid and increasing the damping force of the shock absorber. The strength of the magnetic field, and therefore the damping force, can be adjusted in milliseconds by an electronic control unit (ECU) based on sensor inputs such as wheel speed, steering angle, throttle position, and brake pressure.

This rapid adjustability allows the suspension to adapt to changing road conditions and driving styles almost instantaneously. The result is improved ride comfort, handling, and stability. MagneRide systems can be programmed to provide a range of damping characteristics, from soft and compliant for comfortable cruising to firm and controlled for sporty driving.

MagneRide is commonly found in high-performance vehicles and luxury cars from manufacturers such as General Motors (Cadillac, Chevrolet), Ferrari, Audi, and Lamborghini. The system is often marketed under different names by the automakers, but the underlying technology remains the same. The core advantage lies in its ability to provide a wide range of damping forces with exceptional speed and precision, leading to noticeable improvements in vehicle dynamics.