Detroit Diesel's 2013 engine family, engineered to meet Greenhouse Gas 2014 (GHG14) regulations from the Environmental Protection Agency, features electronics and emissions-technology improvements to benefit fuel economy.  

All Detroit heavy-duty engines feature an enhanced BlueTec emissions system. New components include a liquid-only DEF delivery system, which contributes to better fuel economy due to the elimination of air assist.  A '1-Box' package with fewer parts is now universally configured for all trucks, said to improve serviceability.

Additional changes to every engine include enhanced DDEC electronics that contribute to improved engine control, optimized powertrain and BlueTec management, and accurate fuel reporting.

There's also a new fuel-filter system. Featuring one less filter and longer intervals (100,000 vs. 50,000 miles) than the previous system, the new module also requires fewer priming strokes and provides easier access to the water drain, Detroit says.

The newly designed DD15 engine features a proprietary asymmetric turbocharger with a next-generation amplified common rail system (ACRS), which is claimed to improve performance and fuel economy as well as reduced overall weight and complexity. The variable-speed water pump and optimized oil pump reduce load on the engine, also decreasing fuel use.

Detroit will continue to offer the DD15 TC (with turbo compounding) which will receive many of the engine family changes including the new DDEC electronic controls and improved fuel-filter system.

The updated Detroit DD13 engine features longer service intervals and improvements, including a variable-speed water pump.  

The 2013 Detroit DD16 now