Metal Substrate Based Large Engine Aftertreatment Development Used for Locomotive Application
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An advanced aftertreatment system for a locomotive application was successfully demonstrated for the first time in the locomotive industry to reduce NOx from Tier 2 engine out level down to Tier 4 level. Five 3005 horse powered line-haul Progress Rail locomotives were equipped with diesel oxidation catalyst (DOC) and selective catalyst reduction (SCR) technologies to accumulate more than 20,000 h in total on rail track. As Continental and Caterpillar show in the following, the emission performance of the aftertreatment system maintained and did not show any degradation for 3000 h operation.
Large reductions in the emissions from passenger cars and on-road trucks have been made in the past decades, due to the implementation of advanced aftertreatment systems. The regulations for large-bore non-road and locomotive engines on the other hand have largely been met with engine management. With the phase-in of the Environmental Protection Agency (EPA) Tier 4 Final legislation for...
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