Land vehicles – Wheeled – Articulated vehicle
Patent
1982-02-17
1984-06-19
Pekar, John A.
Land vehicles
Wheeled
Articulated vehicle
B62D 5306
Patent
active
044550359
ABSTRACT:
A anti-jackknifing device for a motor vehicle having two articulated units with a friction brake therebetween has a hydraulic control means for controlling the torque applied by the brake. A hydraulic sensor activating cylinder with two working spaces senses the jackknifing angle between the two units. A three-position four-way reversible valve is connected to the hydraulic brake activating cylinder, between a third port and a check valve and the valve in its first position connects its first and third ports and its second and fourth ports and in its second position connects its first and fourth ports and its second and third ports. A steering angle sensor is provided which determines the desired jackknifing angle therefor. In response to the deviation of the actual jackknifing angle from the desired jackknifing angle, the valve is actuated into its first position when the actual jackknifing angle is overdriven in the clockwise direction and into its second position when the actual jackknifing angle is overdriven in the counter-clockwise direction.
REFERENCES:
patent: 4109929 (1978-08-01), Koroknay
patent: 4344640 (1982-08-01), Ratsko et al.
Ivony Jozsef
Karaszy Gyorgy
Madi Jeno
Ratsko Istvan
Katona Gabriel P.
Pekar John A.
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