Sistemi Sospensioni S.p.a.

Massimo Trinchera

Walter Bruno

Massimo Seminara

Piero Monchiero

Andrea Santini

Gianfranco De Lillo

Guido Sebastiano Alesso

Lorenzo Castagno

A damper with a cylinder and a rod, a spring arranged around the damper and a linear actuator arranged to change in a controlled manner the axial position of a bottom end of the spring relative to the cylinder of the damper. The actuator comprises an inner cylindrical element arranged to be mounted around the cylinder of the damper, an outer cylindrical element, which is mounted so as to be axially slidable relative to the inner cylindrical element and is arranged to support the bottom end of the spring, and a working chamber arranged to be filled with a fluid under pressure to adjust the axial position of the outer cylindrical element relative to the inner cylindrical element. The working chamber is delimited, both radially and axially, only by the inner cylindrical element and by the outer cylindrical element. The outer cylindrical element is provided with a support flange arranged to support the bottom end of the spring.

Linear actuator for adjusting the vertical position of a spring of a damper and spring unit for a vehicle suspension and damper and spring unit for a vehicle suspension comprising such an actuator

A piston () comprises a first pair of passive flow-control valves () [namely, a first compensation valve () and a first rebound valve ()], a second pair of passive flow-control valves () [namely, a second compensation valve () and a second rebound valve ()], and a flow-dividing solenoid valve () shiftable between a first operating position [in which it allows flow of a damping fluid between an upper chamber and a lower chamber of a shock absorber through the first pair of passive flow-control valves () and second pair of passive flow-control valves ()] and a second operating position [in which it allows the flow of the damping fluid between the upper chamber and lower chamber through only the second pair of passive flow-control valves ()]. The solenoid valve () is normally open (i.e., it is normally kept in the first operating position).

Piston for a damping-adjustable shock-absorber, particularly for a vehicle suspension, provided with four passive flow-control valves and with a flow-dividing solenoid valve

Growing community of inventors

Turin, Italy

Massimo Trinchera