Pneumatic trailer brake circuit with breakaway detection and method thereof

A braking system of a trailer, comprising:

• a pressurized supply of pneumatic fluid and hydraulic fluid;
• a base valve including an inlet and an outlet, where the inlet is fluidly coupled to the pressurized supply of hydraulic fluid;
• a solenoid control valve including an inlet fluidly coupled to the pressurized supply of pneumatic fluid, the solenoid control valve operably controlled between an energized state and a de-energized state;
• a brake output fluidly coupled to the outlet of the base valve;
• a first sensor and a second sensor fluidly coupled to the base valve, the first sensor configured to detect a first pressure at the inlet of the base valve, and the second sensor configured to detect a second pressure at the outlet of the base valve;
• wherein, the solenoid valve is operably controlled to its energized state when a difference between the first pressure and second pressure satisfies a threshold.

A pneumatic braking system of a trailer towed by a work machine, comprising:

• a pressurized supply providing pneumatic fluid;
• a pilot line providing hydraulic fluid;
• a base valve including a first inlet, a second inlet, and an outlet, where the first inlet is fluidly coupled to the pilot line;
• a solenoid control valve including an inlet and an outlet, the inlet of the solenoid control valve fluidly coupled to the pressurized fluid supply, and the outlet being coupled to the second inlet of the base valve;
• a first control line fluidly coupled to the outlet of the base valve;
• a second control line fluidly coupled to the outlet of the solenoid control valve;
• wherein, the solenoid control valve is operably controlled between an energized state and a de-energized state;
• wherein, in the de-energized state the pressurized supply is fluidly coupled to the second inlet of the base valve and the second control line, and in the energized state the solenoid control valve fluidly de-couples the pressurized supply from the second inlet of the base valve and the second control line.