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DDC unveils engine technology to meet US 2014 GHG standards

26 June 2012

Detroit Diesel Corporation (DDC) announced changes to its engine family for 2013. The engines will meet the greenhouse gas 2014 (GHG14) regulations by the US Environmental Protection Agency (EPA) one year ahead of the regulatory deadline. The updated family of heavy-duty engines combines engine, electronics and BlueTec® urea-SCR emission technology improvements to benefit fuel economy.

The engines—to be offered under the new Detroit™ brand—feature an integrated powertrain (that also includes Detroit Axles and the Detroit Transmission), which is part of Daimler Trucks’ “Global Excellence Strategy” to have uniform production standards and processes worldwide.

All Detroit 2013 heavy-duty engines feature an enhanced SCR emissions system. New components include an airless urea (DEF) delivery system, which contributes to better fuel economy due to the elimination of air assist. A 1-Box™ package with fewer parts is universally configured for all trucks.

Additional changes to every engine include enhanced DDEC® engine electronics and a new fuel filter system featuring one less filter and longer intervals (100,000 miles vs. 50,000 miles) than the previous system.

New DD15. The newly designed Detroit DD15® engine features an asymmetric turbocharger with a “next-generation” amplified common rail system (ACRS) which improves performance and fuel economy at a reduced overall weight and complexity. The ACRS provides higher injector pressure while eliminating the pressure regulator. Further changes to the engine include an optimized piston design, which reduces oil consumption through the use of an improved oil control ring. A variable-speed water pump and optimized oil pump reduce load on the engine.

With the new DD15, the Cascadia® Evolution truck delivers up to 7% improvement in fuel economy over the EPA 2010 model equipped with a first generation aerodynamic package and up to a 5% improvement compared to the 2013 Cascadia equipped with the latest aerodynamic upgrades, according to Daimler.

Other Models. The updated Detroit DD13® engine features longer service intervals and improvements such as fuel injector nozzle modifications and a new crankcase sensor for OBD requirements. A variable speed water pump creates greater efficiency compared to a gear-driven design. The DD13 will be available with ratings from 370-470 hp and a torque range from 1250-1650 ft-lb.

Detroit will continue to offer the DD15 TC with turbo compounding. The engine will receive the new DDEC electronic controls and improved fuel filter system. The DD15 TC will be available in many of the Freightliner and Western Star trucks.

Finally, the upgraded Detroit DD16® will be available with a wider selection of power and torque ratings: up to 600 hp and up to 2050 ft-lb of torque.

Source: Daimler