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Delphi MagneRide™ is a high-performance, semi-active suspension control system that responds in real time to road and driving conditions based on input from sensors that monitor body and wheel motion. This production-proven system provides fast, smooth continuously variable damping in a cost effective and reliable package. It provides great body motion control and helps increase tire-to-road contact.

Delphi MagneRide is the industry's first semi-active suspension technology with no electro-mechanical valves and no small moving parts. The system consists of four magneto-rheological (MR) fluid-based monotube dampers (struts and/or shock absorbers), a sensor set, and an on-board Electronic Control Unit (ECU).

MR fluid is a suspension of magnetically soft particles in a synthetic hydrocarbon base fluid. When the coil in the damper piston, through which the MR fluid flows, is not energized ("off" state), the MR fluid is not magnetized. The magnetically soft particles within the fluid exhibit a random pattern and the fluid behaves like conventional damper fluid. When the coil is energized ("on" state), the magnetic field causes the particles to align into fibrous structures in the direction of the magnetic flux. The strength of the bond between the particles in the structures is proportional to the strength of the magnetic field. The result is a variable resistance to fluid flow within the damper piston, which provides a variable damping capability in the damper. Fine-tuning the current supplied to the coil in the damper piston allows the generation of a wide range of damping force. Changes in the damping force occur nearly instantaneously; the result is continuously variable real-time damping.

Delphi MagneRide provides improved performance compared with conventional systems. Full software tunable damping characteristics provide excellent low-frequency body motion control without excessive impact harshness at high damper velocities. It also has a wide range of damping force control and high bandwidth for fast response and low power requirements (20 W per damper maximum).

Applications typiques

Delphi MagneRide is suitable for a broad range of passenger vehicles in which premium ride and handling characteristics are desired, including: luxury automobiles, sports cars, light trucks, and sport utility vehicles. Delphi can provide vehicle manufacturers with complete MagneRide systems or individual dampers to meet specific customer performance objectives.

Avantages en matière de performance

Delphi MagneRide helps provide exceptional body motion control to keep the vehicle flat and stable while the road below heaves, pitches, and rolls. It isolates and smoothes out the action of each wheel. Anticipatory control strategies provide the means to affect steering feel and transient roll motion. MagneRide may be integrated with the vehicle’s stability control to enhance stability on gravel, and slippery road surfaces. MagneRide may enhance the vehicle’s anti-lock braking system (ABS) to help keep the vehicle poised and balanced for optimal stopping capability.

With Delphi MagneRide as an integral part of the vehicle's ride and handling system, the result is enhanced vehicle performance, safety, comfort, and reliability.

Operating Conditions

• Dampers: -40°C to 110°C
• Sensors and optional compressor module: -40°C to 105°C
• Electronic Controller Unit: -40°C to 85°C