Flex-Fuel Pentastar V6 Will be Chrysler's High-Efficiency Workhorse
lthough it's first production application will be in the new 2011 Jeep Grand Cherokee that's now on display at the New York Auto Show, Chrysler's all-new Pentastar V6 is destined to see widespread use throughout the corporate lineup in the years to come. This 3.6-liter all-aluminum powerhouse -- the automaker's most sophisticated engine design ever -- is slated to replace no fewer than seven existing V6s in upcoming Chrysler, Dodge and Jeep vehicles. Frank Klegon, Executive Vice President -- Product Development, Chrysler LLC, top-lined the potential benefits of the Pentastar as a true win-win situation. Customers will benefit from its improved fuel economy, greater refinement and increased performance while the production simplification will result in increased flexibility, more efficient operations and significant cost savings to the company.
Boasting double overhead camshafts, high-flow intake/exhaust ports and advanced independent variable valve timing, the engine possesses a broad, flat torque band -- over 90 percent of the peak power will be available from 1,600-6,400 rpm -- and it will run on either unleaded regular gasoline or an E85 blend. Of equal note, the Pentastar is projected to deliver up to eight percent better fuel economy on average than current Chrysler V6s, a factor that's expected to help raise the automaker's CAFE numbers by two mpg by 2015. In the 2011 Jeep Grand Cherokee, the 3.6-liter Pentastar V6 will make a stout 280 horsepower at 6,400 rpm and 260 lb.-ft. of peak torque at 4,800 revs. Those figures represent gains of 33 percent and 11 percent respectively over the existing 3.7-liter single overhead cam V6 in the 2009 Grand Cherokee -- as well as an 11 percent bump in fuel economy.