Johnson Matthey emission control systems enable locomotive operators to reduce nitrogen oxides, carbon monoxide, hydrocarbons, and particulate matter for cleaner air and compliance with the Environmental Protection Agency's Tier IV regulations.

For years the locomotive industry has been the backbone of commerce and trade in North America.  The first compression ignition engine for locomotive propulsion was patented in 1892 and by the 1950s, diesel locomotives were on their way to becoming the dominant type of locomotive.  Today, diesel-powered locomotives are by far the most prevalent in North America.

In 1970, the Environmental Protection Agency passed the Clean Air Act, and in 1997, legislation went into effect tightening emissions regulations on locomotive engines. In 2015, Tier IV regulations required locomotive manufacturers and operators to install emission control equipment to reduce nitrogen oxides, carbon monoxide, hydrocarbons, and particulate matter. Johnson Matthey is teaming with industry leaders to provide selective catalytic reduction (SCR) catalyst, ammonia slip catalyst (ASC), oxidation catalyst, and diesel particulate filter systems to allow manufacturers and operators to meet Tier IV regulations.

Our expert

Jeremy Harris (US)

Jeremy Harris (US)