Cummins is well on the way with its engines for 2007 and has some 80 units involved in on-highway testing programs. These engines are in field tests in fleet environments as diverse as garbage ...

The switchback aftertreatment package is trucked beneath the passenger door, close to the turbocharger to maintain high exhaust temperatures at the catalyst. The cockpit is familiar territory, except ...

Some folks are pessimistic about the new lower-emissions 2007 engines; forecasts of rising costs and falling performance and reliability are common. Just don’t say that to the engineers and scientists ...