Truck hunting detection and abatement apparatus using selective

Details Truck hunting detection and abatement apparatus using selective Truck hunting detection and abatement apparatus using selective

1996-07-02

1997-04-22

Morano, S. Joseph

Railway switches and signals

Cab signal or train control

Train defect

246182B, 1051571, 105168, 303 20, B61L 2300

Patent

active

056223382

ABSTRACT:
A brake control apparatus (8) for a rail car including a truck (14) traveling along a rail (16, 18) includes a truck hunting detection and abatement apparatus (10) for use as part of a brake controller (12). The brake controller (12) is configured for braking the rail car. The apparatus (10) includes a sensor (26) for measuring acceleration of the rail car in a direction transverse to the rail (16, 18), and a control device (24) of the brake controller (12). The control device (24) includes a microprocessor (30) and is responsive to the sensor (26) for comparing the measured acceleration of the rail car with a predetermined acceleration limit. The control device (24) is configured to apply the brakes when the measured acceleration exceeds the predetermined acceleration limit. The control device (24) also determines the time interval between successive brake applications, and generates a message for transmission to a train locomotive moving the rail car when the measured time interval is less than a predetermined time interval limit, alerting the locomotive engineers of excessive truck hunting.

REFERENCES:
patent: 3961584 (1976-06-01), Paton et al.
patent: 4393957 (1983-07-01), Hawthorne
patent: 5237604 (1993-08-01), Ryan
patent: 5275475 (1994-01-01), Hartmann et al.
patent: 5335974 (1994-08-01), Klink
patent: 5393129 (1995-02-01), Troiani et al.
patent: 5478143 (1995-12-01), Doden et al.
patent: 5492067 (1996-02-01), Anderson
patent: 5507234 (1996-04-01), Thorsen

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