A common methodology used to meet the IMO III or EPA T4 NOX emission standards is reducing NOX in the exhaust gas through deployment of a Selective Catalytic Reduction (SCR) exhaust gas after-treatment system. An alternative methodology to meet the IMO III or EPA T4 standards is to minimize formation of NOX in-cylinder through deploying Exhaust Gas Recirculation (EGR) technology. In 2015, after 6 years of development, GE Transportation, a Wabtec company (Wabtec), has been first to launch a medium-speed marine diesel engine series that is certified to meet the IMO III and EPA T4 standards through an advanced EGR system, while maintaining world class fuel efficiency.
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