Fuel pressure actuated coupling for train consist

A coupling system for a train consist is disclosed. The coupling system may include a first conduit associated with a locomotive of the train consist, a second conduit associated with a tender car of the train consist, and a fluid coupling connecting the first and second conduits. The coupling system may also include a first mechanical coupler associated with the locomotive and a second mechanical coupler associated with the tender car and configured to engage and lock with the first mechanical coupler. The coupling system may further include a locking device driven by fluid passing through the fluid coupling that is configured to inhibit disengagement of the first mechanical coupler and the second mechanical coupler.