Motor vehicle having at least two driven axles

Claim 1

In a motor vehicle comprising a plurality of driven axles, wheels carried by each of said axles, a prime mover, a plurality of power trains for transmitting power from said prime mover to respective ones of said driven axles, and a brake system associated with and pressure-operable to brake said wheels, wherein said power trains and said brake system constitute yaw-inducing means adapted to impart to said vehicle a lateral angular acceleration in response to the operation of said brake system, the improvement residing in that said vehicle comprises a sensor for measuring the angular acceleration of said vehicle, said vehicle comprises yaw-reducing means, which are operatively connected to said yaw-inducing means and are controlled by said sensor to reduce said angular acceleration when, and only when, said sensor has detected a rise of said angular acceleration to a predetermined value and wherein said sensor comprises an inert mass, which is pivoted on an approximately vertical axis, a spring urging said inert mass to an intermediate position, two sensing elements arranged to be approached by said inert mass in response to said angular acceleration and to generate signals in response to an approach of said inert mass indicating that said angular acceleration has risen to said predetermined value, and leads for delivering said signals to said yaw-reducing means, said yaw-reducing means being arranged to reduce said angular acceleration in response to said signals.