Transportation Technology Center Inc

Impact Control With Limited Slack Action: Measuring Long-Travel Draft System Performance

RAILWAY AGE, JULY 2020 ISSUE, TTCI R&D: Draft systems are important contributors to train performance because, among effects, these systems limit the relative motion between coupled vehicles in a train and absorb energy during impact events. An end-of-car cushioning (EOCC) unit is a type of long-travel draft system that uses hydraulic cylinders in place of standard friction draft gears to absorb energy and improve yard impact performance. EOCC units absorb energy when coupler forces are applied by forcing oil from a high-pressure inner cylinder to a low-pressure outer casing through various preloaded orifices over a long displacement stroke, which is typically 10 or 15 inches.

Rolling Asset Health

Railway Age, June 2019 Issue, Combining Big Data Analytics With Remote Monitoring: Advancing safe and efficient rail operations continues to be a primary focus of North American freight railroad operations. What is particularly exciting right now is that the data available to railroads, both in its detail and volume, enables them to manage their operations in ways that were not possible before.