Cummins Inc. has been awarded a $4.5-million grant from the US Department of Energy to develop a Class 6 commercial plug-in hybrid electric vehicle that can reduce fuel consumption by at least 50% over conventional Class 6 vehicles. (Earlier post.) When fully loaded, Class 6 vehicles weigh between approximately 19,000 and 26,000 pounds; typical examples include school buses or single-axle work trucks.
With their expertise in internal combustion engines and related products, Cummins researchers will optimize the powertrain by selecting the engine with the best architecture to use as an electric commercial vehicle range extender, using the engine to manage the charge level of the all-electric drive battery pack.
The range extender will be integrated, using advanced vehicle controls, with the electrified powertrain and other applicable technologies.
Ultimately, the researchers aim to demonstrate improved fuel consumption and state of the art drivability and performance regardless of environmental conditions.
Cummins is partnering with PACCAR on the project, and the full team includes representatives from The Ohio State University, National Renewable Energy Laboratory and Argonne National Laboratory.
The close integration and control of the electrified powertrain with an appropriately selected engine is critically important to developing a plug-in hybrid electric vehicle system. We believe that through the team’s efforts we can soon make these innovations commercially available.—Wayne Eckerle, Vice President, Research and Technology, Cummins
The reduction of fuel consumption will be met or exceeded during a wide-range of drive cycles designed to meet the needs of a wide variety of commercial fleet operators. The fuel reduction goals will be achieved through the use of an electrified vehicle powertrain, optimization of the internal combustion engine operation, and other technologies including intelligent transportation systems and electronic braking.