This collaboration between the Gas Technology Institute and Clean Air Power, Inc. sought to demonstrate the commercial potential of a 13-liter, dual-fuel diesel engine fired with compression ignition of a mixture of natural gas and diesel. The two diesel engines models were retrofit with Clean Air Power’s dual-fuel system. The demonstration used 12 trucks in California’s South Coast and Mojave Desert air basins. Data and experiences captured during the in-use demonstration were compiled in this report. During the 20-month demonstration period from December 2013 to July 2015, the 12 heavy-duty vehicles fitted with Clean Air Power’s dual-fuel technology accumulated more than 1.6 million miles in real-world conditions. Clean Air Power asserted that the trucks demonstrated overall viability, reliability, drivability, efficiency and robustness, making it worthy of commercialization.
These demonstrations have resulted in a patented and California Air Resources Board-certified dual-fuel system for 2012 Volvo/Mack D13/MP8 heavy-duty diesel engines. Clean Air Power’s dual-fuel conversion system is an add-on technology that adapts the base diesel engine to operate using a combination of natural gas (CNG or LNG) and diesel.
