Valeo Thermique Moteur

Valeo Systemes Thermiques

Mathieu Chanfreau

Carlos Alberto Martins

Ngy Srun Ap

Frederic Vacca

Alain Farkh

Arnaud Maire

A control valve () for a fluid circulation circuit comprises a body () which is equipped with a fluid inlet () and with at least two fluid outlets () and which delimits a housing of revolution for an adjusting element () able to rotate about an axis of rotation (XX) and to adopt various angular positions to control the distribution of fluid through the outlets. The adjusting member () is surrounded by a sealing ring () in the form of an open annulus, which rotates as one with the adjusting member and is arranged with a small clearance around the adjusting member, this allowing the sealing ring to be pressed firmly internally against a side wall () into which the fluid outlets () open with a view to ensuring sealing under the action of the pressure of the fluid. Application in particular to motor vehicle fluid circuits.

Control valve with improved sealing for a fluid circulation system

A control valve () for a fluid circulation circuit comprises a body () which is equipped with a fluid inlet () and at least two fluid outlets (and) and which delimits a cylindrical housing for an adjusting member () able to rotate about an axis of rotation (XX) and to adopt various angular positions in order to control the distribution of fluid through the outlets. The body () comprises an end wall () into which the fluid inlet () opens and a cylindrical side wall () into which the fluid outlets open at axial heights and at angular positions that are chosen with respect to the axis of rotation (XX). The rotary member () comprises a truncated end () facing toward the end wall (), this making it possible to have control over the fluid outlets using a law defined as a function of the angular position of the rotary member in the valve body.

Control valve for an engine cooling circuit

A cooling circuit for a vehicle engine, traveled by fluid under pump action, comprises a cooling branch with a radiator associated with a motor-driven fan unit, and a heating branch containing an air heater. A first device establishes a hot-starting state of the engine as a function of chosen conditions; and a second device, active in this hot-starting state, controls the speed of the pump and the speed of the motor-driven fan unit under chosen conditions, as a function of a first magnitude representative of the temperature of the fluid and of a second magnitude representative of the heating demand.

Growing community of inventors

Saulx Marchais, France

Mathieu Chanfreau