System and method for filling a trailer reservoir

A method for controlling a filling operation of an air tank on a trailer portion of an articulated vehicle, the method comprising:

• receiving an electrical input signal based on a command to unpark the trailer;
• identifying, based on the electrical input signal, when an operator of the vehicle desires to unpark the trailer;
• and
• based on the command to unpark the trailer, communicating a supplemental portion of the compressed air from a tractor portion of the articulated vehicle to the trailer for filling the air tank on the trailer using a quick-fill mode.

A system for communicating compressed air, the system comprising:

• a tractor protection valve, on a tractor of an articulated vehicle, the tractor protection valve including:
• a pneumatic supply line communicating the compressed air from the tractor to a trailer reservoir on a trailer of the articulated vehicle;
• a pneumatic control line communicating the compressed air from the tractor to a trailer control valve that selectively controls communication of the compressed air from the trailer reservoir to a trailer brake based on a pressure in the pneumatic control line;
• and
• a one-way check valve permitting the compressed air to be communicated from the control line to the supply line, based on relative pressures in the supply line and the control line;
• an electronic controller on the tractor, the controller comprising:
• an electrical input port adapted to receive an electrical input signal based on a command to disengage a trailer park brake;
• an electronic processor adapted to:
• receive the electrical input signal from the electrical input port;
• identify, based on the electrical input signal, when the command to disengage the trailer park brake is received at the electrical input port;
• and
• based on the command to disengage the trailer park brake, transmit an electrical output signal to an electrical output port for causing a supplemental portion of the compressed air to be communicated from the tractor to the trailer reservoir via the control line, the one-way check valve and the supply line.