This story appears in the Jan. 12 print edition of Transport Topics. The Environmental Protection Agency said it is concerned that emissions systems using a copper compound that engine maker Cummins ...

Cummins has reaffirmed its intention to use selective catalytic reduction (SCR) to meet 2010 Environmental Protection Agency (EPA) regulations despite EPA’s contention that the copper zeolite used in ...

Cummins Inc. said its heavy-duty diesel engines that comply with the Environmental Protection Agency’s 2010 standards will not require NOx aftertreatment, although its medium-duty engines will use ...

This story appears in the Aug. 6 print edition of Transport Topics. Truck and engine manufacturer Navistar International Corp., pressed to find a way to offer engines that comply with federal ...