Off-highway calibration challenges- BIG AND COMPLEX

As the final set of Tier 4 regulations kick in for engines greater than 750 hp, calibration efforts must contend with complex engine and aftertreatment systems. Engine manufacturers and service providers deal with this complexity, but does it need to be so?

The U.S. EPA Tier 4 Final emissions regulations are set for final phase-in during calendar year 2015. This final phase-in period focuses on large engines, producing greater than 560 kW (750 hp). This is especially relevant to MTU, makers of some very large marine, rail, stationary, mining, and oil & gas engines. Some reach 10,000 kW (13,410 hp).

“We are not particularly worried about meeting the emissions regulations for this final phase-in period because we have been working toward this goal for a number of years,” explained Marc Schlichting, Manager of Application Engineering, Rail and Mining Engines for MTU America Inc.