Psa Automobiles Sa

Bwi France S.a.s.u.

Delphi Technologies, Inc.

Bwi Company Limited S.a.

Bruno Perrée

Philippe Germain

Alan Cavarec

Robin Oakley

Frederic Sauvage

Christophe Cardon

Frédéric Sauvage

An anti-roll device comprises a bar coupled to two links, a hydraulic control circuit (CC) and actuating means (MAC) comprising a casing (CR) defining the chamber (CH) subdivided into a first (P) and a second (P) part by a piston (PI), and comprising first (ES) and second (ES) inlets-outlets communicating with the first (P) and second (P) parts and an intermediate inlet-outlet (ES) communicating with the first part (P) or with the second part (P) depending on the position of the piston (PI). These actuating means (MAC) adopt a disengaged state or block state in whatever position of the piston (PI), according to the accessibility status of the first (ES) and second (ES) inlets-outlets and of the intermediate inlet-outlet (ES). The control circuit (CC) controls the accessibility statuses according to the commands received.

Motor vehicle wheelset anti-roll device with actuating means operated by a hydraulic control circuit

An anti-roll device equips an axle assembly of a motor vehicle and comprises two connecting rods of which one comprises a part of coupling means comprising: a housing subdivided into two parts by a piston and comprising two inlets-outlets communicating with the two parts and an intermediate inlet-outlet communicating with at least one of the parts depending on the position of the piston, a fluid reservoir supplying a conduit coupled to the intermediate inlet-outlet, two non-return means coupled to the inlets-outlets and to the conduit, and an electrically operated valve coupled to the inlets-outlets and placed either in an open state ensuring a connection between the parts and the fluid reservoir via the intermediate inlet-outlet, or in a closed state allowing fluid discharge out of the housing only through the intermediate inlet-outlet.

Anti-roll device with controlled coupling means for a motor vehicle axle assembly

A vehicle roll control system, comprising a front torsion bar(), attached to the front hydraulic actuator () and a rear torsion bar () attached to the rear hydraulic actuator (). A pressure control valve () is fluidly connected between a pressure source () and a reservoir (). A directional valve () is fluidly connected between the pressure control valve () and the hydraulic actuators (). A pressure relief valve () fluidly connects the directional valve to the pressure source () or the reservoir () and is actuated to create pressure differential between first fluid chambers () of the hydraulic actuators ()and/or to create pressure differential between second fluid chambers () of the hydraulic actuators ().

Vehicle roll control system

A vehicle roll control system for a vehicle has a hydraulic actuator attached to a torsion bar. The system includes first and second pressure control valves fluidly connected in series between a pressure source and a reservoir, and a directional valve fluidly connected between the pressure control valves and the hydraulic actuator. The control valves are actuated to control the fluid pressure within the hydraulic actuator to either extend or compress the hydraulic actuator based on the detection of a predetermined vehicle condition for controlling vehicle roll.

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Paris, France

Bruno Perrée