A control unit with a built-in computer monitors the pressure of a working fluid outputted from a trailer control valve for controlling a brake of a trailer in conjunction with a brake of a tractor when the brake of the tractor is released. The control unit determines that the trailer is coupled to the tractor when the time required for the pressure of the working fluid to decrease to a predetermined pressure is a predetermined time or longer, and determines that the trailer is not coupled to the tractor when the time is shorter than the predetermined time.
Trailer coupling determination device and trailer coupling determination method
2015-07-22
Patent
Elektronische Ressource
Englisch
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