Hopefully Union Pacific's testing of two different retrofit technologies for reducing emissions in older locomotives, an experimental "oxidation catalyst" filtering canister and a diesel ...

The Fell differential gearbox. All diesel locomotive designs struggle with the problem of transmitting the huge torque required to start a fully loaded train at low speeds, and because of the huge ...

A type of diesel train was retired on March 12 due to changes in train timetables at Japan Freight Railway Company, a JR Group unit. The Class DD51 diesel-hydraulic locomotive was in service for ...