Cummins is developing a high-efficiency inline-four-cylinder diesel engine with money from the U.S. Department of Energy and in partnership with Nissan for demonstration in the Titan light-duty pickup truck.
The project, announced at the DOE’s 2011 Merit Review in Washington, D.C., could mean the next-generation of the Nissan Titan will come to market with a decidedly higher-mileage oil-burner. That, in turn, might finally help get the truck out of the full-size sales cellar.
Most half-ton truck makers are betting on small-displacement direct-injection gasoline engines to meet future fuel economy regulations, but Cummins expects its small displacement oil burner to get 40 percent better fuel economy over current light-duty V-8 truck engines. The Cummins average fuel economy target for this new diesel engine is 28 mpg while meeting tough U.S. Tier 2 Bin 2 emissions limits, according to the presentation.