A sustainable increase in natural gas supplies is resulting in efforts to explore its use as a viable alternative to diesel for powering locomotives. While LNG is preferred over CNG, Martha Lenz, director of engine systems with EMD, explains that several technologies for combustion of natural gas in locomotive diesel engines are currently under evaluation.
Bombardier's multi-engined Traxx DE ME was one of the star exhibits at InnoTrans in September, with visitors waiting up to 40 minutes for the chance to see inside this innovative locomotive. With the need for lower emissions and greater fuel economy becoming ever more pressing, Keith Barrow asks whether four engines might be better than one.
TASRAIL, which operates the 726km, 1067mm-gauge rail network on the Australian island state of Tasmania, has awarded a $A 60m ($US 61.3m) contract to Downer Rail, Australia, and Progress Rail, United States, for 17 type PR22L locomotives, delivery of which will start in mid-2013.