Ferrari SUV Debuts New Multimatic Active Damper Technology

Multimatic’s True Active Spool Valve Damper marks an advance in the company’s spool valve technology.

Dan Carney, Senior Editor

September 19, 2022

3 Min Read
FERRARI_FRONT_3_4_v1.jpg
Ferrari PurosangueImage courtesy of Ferrari

While the world debates the appropriateness of famed race team and sports car purveyor Ferrari’s introduction of a crossover SUV model with the Purosangue (“pure blood”), engineers can marvel at the car’s introduction of a sophisticated new active shock absorber technology from Multimatic.

The Multimatic True Active Spool Valve (TASV) damper improves over the company’s existing Dynamic Suspensions Spool Valve (DSSV) technology by adding speedy active control to the spool valve’s ability to provide very precise valving of the hydraulic damper. We've seen DSSV shocks on the Chevrolet Colorado ZR2 and Camaro ZL1 1LE as well as the limited-edition Aston Martin One-77 sports car.

TASV Damper contains two spool valves independently controlling compression and rebound motion. Adding an electric motor gives the damper more force authority and does so at higher frequencies than traditional adaptive or semi-active shock absorber designs.

Doing so requires significant energy, so the Purosangue includes a 48-volt electric system that powers the TASV dampers. We’ve seen 48-volt active anti-roll bars in other vehicles such as Audi’s Active Roll Stabilization system.

The electric motor used to control the dampers is a high-power density, liquid-cooled, three-phase brushless electric motor that was co-developed for this application by Ferrari.  The motor features a “slotless” stator winding technology to minimize its radial dimensions for easier packaging with the suspension and to maximize power density.

Related:How to Build a Better Bilstein Shock Absorber

The motor force is transmitted to the valve via a twin-lead ball screw that is connected directly to the hydraulic damper piston rod. This enables high-frequency response and reduces friction, inertia, and package space.

The Purosangue’s accelerometers and position sensors on each suspension corner include the Side Slip Control (SSC) 8.0 and the 6w-CDS sensor that feed data to Ferrari’s proprietary control logic that manages control of the fully active suspension system.

A challenge of a Ferrari SUV is meeting customers’ expectations for sporty performance and handling in a vehicle that is taller and that has a higher center of gravity. The Multimatic TASV dampers mitigate the height by permitting variable and continual distribution of roll stiffness and active lowering of the roll center (by up to 10mm).

This lets the computer tailor the Purosang’s handling characteristics to the circumstances, and the dampers’ high-frequency control lets them manage both body motion and wheel movement, so they can both reduce roll and pitch as well as absorbing road surface irregularities. The ability to control body motions and height eliminates the need for any anti-roll devices or mechanisms for dynamic ride height adjustment.

Related:Texas Instruments Bullish on 48-Volt Automotive Systems

2022_09_12-Ferrari-Purosangue-TrueActive-8.png

The Multimatic TASV damper used on the Ferrari Purosangue.

“This technology makes it possible to continuously control the vehicle body to achieve targeted vertical, roll and pitch dynamics at any speed.” said Michael Guttilla, Multimatic Vice President of Engineering. “For example, the system can actively lower the vehicle’s center of gravity and control pitch and roll stiffness under acceleration, braking and cornering to maximize traction and dynamically optimize under/oversteer handling balance. It can also optimize tire contact with the road as the vehicle drives over rough surfaces, delivering exceptional ride quality and stability.”

These sound like ideal characteristics for making an SUV deliver the driving experience expected of a Ferrari. We can’t wait to find out for ourselves with a Purosangue test drive!

About the Author

Dan Carney

Senior Editor, Design News

Dan’s coverage of the auto industry over three decades has taken him to the racetracks, automotive engineering centers, vehicle simulators, wind tunnels, and crash-test labs of the world.

A member of the North American Car, Truck, and Utility of the Year jury, Dan also contributes car reviews to Popular Science magazine, serves on the International Engine of the Year jury, and has judged the collegiate Formula SAE competition.

Dan is a winner of the International Motor Press Association's Ken Purdy Award for automotive writing, as well as the National Motorsports Press Association's award for magazine writing and the Washington Automotive Press Association's Golden Quill award.

AstonMartinVanquish_©AndyMorgan_025_copy_2.JPG

He has held a Sports Car Club of America racing license since 1991, is an SCCA National race winner, two-time SCCA Runoffs competitor in Formula F, and an Old Dominion Region Driver of the Year award winner. Co-drove a Ford Focus 1.0-liter EcoBoost to 16 Federation Internationale de l’Automobile-accredited world speed records over distances from just under 1km to over 4,104km at the CERAM test circuit in Mortefontaine, France.

He was also a longtime contributor to the Society of Automotive Engineers' Automotive Engineering International magazine.

He specializes in analyzing technical developments, particularly in the areas of motorsports, efficiency, and safety.

He has been published in The New York Times, NBC News, Motor Trend, Popular Mechanics, The Washington Post, Hagerty, AutoTrader.com, Maxim, RaceCar Engineering, AutoWeek, Virginia Living, and others.

Dan has authored books on the Honda S2000 and Dodge Viper sports cars and contributed automotive content to the consumer finance book, Fight For Your Money.

He is a member and past president of the Washington Automotive Press Association and is a member of the Society of Automotive Engineers

Sign up for Design News newsletters

You May Also Like