Johnson Controls Technology Company

Valeo Systemes De Controle Moteur

Johnson Controls Automotive Electronics

David Walraet

The device comprises means for measuring the pressure of the gas contained in a tire of a vehicle, means for collecting pressure measurement data and means for calculating the change in pressure between two instants of measurement data collection. The device further includes clocking means for clocking the time of the measurement data collection and for calculating the change in pressure between clocked instants of collection. The device also makes it possible for the pressure measurement to be temperature-compensated.

Device for detecting a leak or underinflation in the tires of motor vehicle wheels

A tire pressure monitoring system for the wheels of a motor vehicle determines the position of each wheel.

Tire pressure monitoring system

The invention relates to an electromagnetic actuator comprising an actuator member () connected to an armature () which is movable under drive from a drive member comprising at least one coil () for generating magnetic flux in a core () having a face facing a face of the armature (), at least one of the facing faces including at least one set-back portion (), the armature () and the core () being arranged, in a first zone () of the armature () and of the core () including the set-back portion, to define a first magnetic path which is interrupted by an air gap that is not less than the setback of the set-back portion () when the armature () bears against the core (), and in a second zone () of the armature () and of the core () excluding the set-back portion, to define a second magnetic path which is interrupted solely by a residual air gap when the armature () bears against the core (), the total area of the set-back portion being no greater than an area that would bring the magnetic flux to saturation in the second zone of the armature.

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Saint Germain-en-Laye, France

David Walraet