Chrysler Unveils Pentastar V-6 Engine
Chrysler’s new corporate V-6 engine is being shown to the world at the 2009 New York auto show wrapped in an all-new 2011 Jeep Grand Cherokee. The company has supplied us with a few more specifics on the new engine family, called Pentastar, which will eventually replace seven V-6 mills in the current lineup and bring an average eight-percent fuel efficiency improvement compared to those powerplants.
The 24-valve, 3.6-liter V-6 features dual overhead cams and an aluminum block and heads. Both the intake and exhaust timing are variable, yet the engine employs traditional port fuel injection. When it debuts in the Grand Cherokee, the engine will be tuned to produce 280 hp at 6400 rpm and 260 lb-ft of torque at 4800 rpm on regular gasoline (it is also E85-capable). The torque curve is broad, with 90 percent of max twist available from 1600 to 6400 rpm. Maximum engine speed is 7200 rpm.
“This new family of engines uses an architecture conceived with future technology growth and integration in mind,” according to Bob Lee, Chrysler powertrain product team vice president. We suspect this refers to the addition of things like direct fuel injection and turbochargers down the road, and a smaller-displacement version would also not surprise us.
Chrysler says the new engine will add two mpg to the company’s corporate average fuel economy by 2015. By that time, it should have found its way into most Dodge, Jeep, and Chrysler vehicles, including the next Dodge Charger and Chrysler 300C.
Chrysler’s new corporate V-6 engine is being shown to the world at the 2009 New York auto show wrapped in an all-new 2011 Jeep Grand Cherokee. The company has supplied us with a few more specifics on the new engine family, called Pentastar, which will eventually replace seven V-6 mills in the current lineup and bring an average eight-percent fuel efficiency improvement compared to those powerplants.
The 24-valve, 3.6-liter V-6 features dual overhead cams and an aluminum block and heads. Both the intake and exhaust timing are variable, yet the engine employs traditional port fuel injection. When it debuts in the Grand Cherokee, the engine will be tuned to produce 280 hp at 6400 rpm and 260 lb-ft of torque at 4800 rpm on regular gasoline (it is also E85-capable). The torque curve is broad, with 90 percent of max twist available from 1600 to 6400 rpm. Maximum engine speed is 7200 rpm.
“This new family of engines uses an architecture conceived with future technology growth and integration in mind,” according to Bob Lee, Chrysler powertrain product team vice president. We suspect this refers to the addition of things like direct fuel injection and turbochargers down the road, and a smaller-displacement version would also not surprise us.
Chrysler says the new engine will add two mpg to the company’s corporate average fuel economy by 2015. By that time, it should have found its way into most Dodge, Jeep, and Chrysler vehicles, including the next Dodge Charger and Chrysler 300C.
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