Detroit Diesel put a different spin on the old idea of double turbocharging by linking the DD15's second, low-pressure turbo to the flywheel.
Detroit Diesel put a different spin on the old idea of double turbocharging by linking the DD15's second, low-pressure turbo to the flywheel. Called turbocompounding, the concept captures extra exhaust energy to boost power and/or cut fuel use. The DD15 got Blue Tec exhaust-fluid aftertreatment that works with the existing particulate filter, existing exhaust-gas recirculation, and high-efficiency combustion to cut NOx emissions. The 2010 version also gets up to 5 percent better fuel economy, the company says. The 14.8-liter DD15 has ratings of 455 to 560 horsepower and 1,550 to 1,850 lbs.-ft., and is offered in Class 8 Freightliner and Western Star trucks.
According to Cummins Turbo Technologies, a new addition to its existing range of large turbochargers for engines with displacements of 16 liters and more incorporates new technologies capable of improving overall turbocharger efficiency of typical applications by up to 10 percent.
Two 13.5L generator drive diesel engines for emergency stationary gen-set applications are available in the 350- to 500-kWe range.