A HYDRAULIC BRAKING DEVICE HAVING SECURITY PROVISIONS, FOR A FARM TRACTOR OR A SIMILAR VEHICLE

WIPO Patent Application WO/2009/090078

A3

A braking system for farm tractors and similar vehicles, comprising a differential braking system and a hydraulic system for the braking assistance forming a system unit (H) which includes two circuit branches (H1,H2), each circuit branch operating the braking with respect of one side of the vehicle. According to the invention, to said system unit (H) are applied, through connection interfaces (36,37), two control units (C1,C2), each control unit including an electrovalve (20) and a distributor (24) operated by said electrovalve, each said distributor (24) controlling the operation of the system unit (H) with respect to one of the circuit branches (H1,H2), and each said electrovalve (20) being singularly controlled by an electronic control circuit (EL) provided with sensors (V,R,P,A) of the main vehicle parameters, such as a sensor (V) of the vehicle speed, sensors (R) of the speed of singular wheels, sensors (P) of the positions of the braking pedals and a sensor (A) of the position of the accelerator pedal. In this manner the vehicle is equipped with a function of regulation of the slip in traction (ASR), or with a function preventing the wheel blockage in braking (ABS), or with a function of stability control (ESP), or with several of these and other functions, having a great utility to the aim of security when the vehicle runs on road at a high speed.

CADEDDU LEONARDO (IT)

PCT/EP2009/000243

July 01, 2010

January 12, 2009

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VHIT S P A UNIPERSONALE (IT)
CADEDDU LEONARDO (IT)

B60T11/21; B60T13/14

EP1457400A1	2004-09-15
GB2201743A	1988-09-07
US3927915A	1975-12-23
DE9204417U1	1992-06-17

PATRITO, Pier, Franco (Via Don Minzoni 14, Torino, IT)

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