|Rendering of the V6 member of the engine family from Cummins-DOE Light-Duty Diesel project.|
Cummins Inc. has reached agreement with a major automotive manufacturer serving the North American market to produce and market a light-duty, diesel-powered engine. For competitive reasons, Cummins’ original equipment manufacturer partner in the venture has asked to remain confidential.
As part of the agreement, Cummins will develop and manufacture a family of high-performance, light-duty diesel engines for a variety of automotive applications in vehicles below 8,500 pounds gross vehicle weight, including standard pickup trucks and sport utility vehicles. Certain bus, marine and industrial applications also will be served by this engine family.
The first vehicles with this engine are expected to be ready for market by the end of the decade. Cummins anticipates that this diesel engine will provide an average of 30% fuel savings, depending on the drive cycle, over gasoline-powered engines for comparable vehicles.
The concept for this product is the result of a nine-year partnership between Cummins and the US Department of Energy that has been developing an engine family with a 4.2-liter V6 and a 5.6-liter diesel V8 that will meet EPA Tier II and CARB LEV II emissions standards.
|Rendering of the emissions aftertreatment system on the V family. Click to enlarge.|
In test vehicles, development versions of the 4.2-liter V6 have delivered combined cycle fuel economy of 22.1 mpg US, while development versions of the 5.6-liter V8 delivered 21.7 mpg US.
Earlier work on the new engine family used precise control of the air handling system and combustion to reduce engine-out emissions, followed by aftertreatment with a four-way catalyst system, including NOx Adsorber and Particulate Filter.
This agreement gives the driving public an even greater opportunity to experience the benefits of a new class of vehicles powered by a high-performance, fuel-efficient, clean diesel engine made by Cummins. This line of diesel engines also will fuel the growth of an exciting new market in which Cummins does not currently participate.—Tim Solso, Cummins Chairman and CEO
Cummins currently provides on-road engines for the Dodge RAM pickup and a variety of medium- and heavy-duty vehicles, as well as off-highway and marine engines.