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Machine translation
1. (WO1981003151) WHEEL SLIP CONTROL ON DIFFERENTIALLY DRIVEN WHEELS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003151    International Application No.:    PCT/US1980/000538
Publication Date: 12.11.1981 International Filing Date: 07.05.1980
IPC:
B60T 11/34 (2006.01), B60T 13/16 (2006.01), B60T 8/175 (2006.01), B60T 8/48 (2006.01)
Applicants:
Inventors:
Priority Data:
US80/00538 07.05.1980 WO
Title (EN) WHEEL SLIP CONTROL ON DIFFERENTIALLY DRIVEN WHEELS
(FR) COMMANDE DU PATINAGE DE ROUES ENTRAINEES DIFFERENTIELLEMENT
Abstract: front page image
(EN)A pair of vehicle driving wheels (8), (9) powered by a drive shaft (10) through a differential (11) can experience difficulties when one of the two differentially driven wheels (8/9) loses traction. The differential (11) directs power to the wheel that is slipping and the wheel with traction remains stationary. Anti-spin devices have been developed but often produce an abrupt transfer of the driving power to the wheel having traction. The anti-spin apparatus of this invention includes an electrical control circuit (24) and sensors (20), (21) for generating a slip signal representing the speed difference between the wheels (8), (9), and includes a modulated hydraulic reducing valve (30), (110) for actuating the brake (15/15") on the faster rotating wheel (8/9) and a hydraulic modulating control valve (29) connected to the reducing valve (30), (110) and actuated by the slip signal. The reducing valve (30), (110) varies the braking force applied to the faster rotating wheel in accordance with the difference in rotational speeds between the wheels (8), (9).
(FR)Une paire de roues d"entrainement d"un vehicule (8, 9) entrainees par un arbre de transmission (10) par l"intermediaire d"un differentiel (11) peuvent poser des problemes lorsque l"une des deux roues entrainees differentiellement (8/9) perd sa traction. Le differentiel (11) envoie de la puissance sur la roue qui patine et la roue avec traction reste stationnaire. Des dispositifs "anti-spin" ont ete developpes mais ils produisent souvent un transfert violent de la puissance d"entrainement sur la roue ayant une traction. L"appareil "anti-spin" de cette invention comprend un circuit de commandes electriques (24) et des detecteurs (20, 21) pour produire un signal de patinage representant la difference des vitesses entre les roues (8, 9), et comprend une soupape de reduction hydraulique modulee (30, 110) pour actionner le frein (15/15") sur la roue en rotation la plus rapide (8/9) et une soupape de commande de modulation hydraulique (29) connectee a la soupape de reduction (30, 110) et actionnee par le signal de patinage. La soupape de reduction (30, 110) modifie la force de freinage appliquee a la roue en rotation la plus rapide en fonction de la difference de rotation entre les roues (8, 9).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)