ECP overlay system for UIC-type distributor valve

An electronically controlled pneumatic (ECP) overlay system, the ECP overlay system comprising:

• a manifold body comprising a pipe bracket face configured to engage a face of a pipe bracket of a brake system, a valve face configured to engage a mounting face of a main portion of a distributor valve of the brake system, and an electric manifold face;
• an electric manifold assembly engaged with the electric manifold face of the manifold body, the electric manifold assembly having a pneumatic mode where the electric manifold assembly is configured to allow pneumatic-only control of a brake cylinder of the brake system and an ECP mode where the electric manifold assembly is configured to allow electronic control of a brake cylinder of the brake system, the electric manifold assembly also including a cut-out valve, a fill valve, and a brake cylinder exhaust valve, the cut-out valve, the fill valve, and the brake cylinder exhaust valve each having an open position and closed position, and wherein, while the electric manifold assembly is in the ECP mode with the fill valve in the open position and the cut-out valve and the brake cylinder exhaust valve each in the closed position, the fill valve is configured to place a reservoir pressure passage in fluid communication with a brake cylinder pressure passage, wherein the cut-out valve, the fill valve, and the brake cylinder exhaust valve are electronically-controlled via a cut-out solenoid, a fill solenoid, and a brake cylinder exhaust solenoid, respectively, and
• wherein the cut-out valve, the fill valve, and the brake cylinder exhaust valve each comprise a diaphragm check valve, the cut-out valve biased to the open position, the fill valve biased to the closed position, the brake cylinder exhaust valve biased to the open position, the cut-out solenoid, the fill solenoid, and the brake cylinder exhaust solenoid each configured to supply pneumatic pressure to the respective cut-out valve, the fill valve, and the brake cylinder exhaust valve to change the cut-out valve and the brake cylinder exhaust valve to the closed position and maintain the fill valve in the closed position.