Renault Vehicules Industriels

Jean-Paul Sibeud

Engine brake clutch device comprising a common system of the electric machine type for transformation of mechanical energy associated with a differential system (27) and with a clutch (28), the unit being placed between the engine and the transmission so as to be able to perform the clutching or the engine braking of the vehicle.

Engine brake clutch including electrical brake

Device for detecting the underinflation of a motor vehicle tire (1) serving also as a device for measuring the kinetic state of the wheel, characterized by the fact that it comprises in combination: a toothed wheel turning with the wheel (1) of the vehicle and whose electrical characteristics of at least one (6a) of the teeth (6) are modified by a pressure drop in one of the tires, an electromagnet (10) fixed to rotate and constituting an electromagnetic sensor in which the toothed wheel (4) generates a signal formed from successive pulses, and a computer (23) which computes the values of the successive periods, and which interprets their variation as an acceleration or deceleration or else as a state of underinflation of the tire according to the behavior of this variation.

Growing community of inventors

Saint Symphorien D'Ozon, France

Jean-Paul Sibeud