Chrysler has introduced their upgraded 3.6-liter Pentastar V6 engine.
Set to debut in the 2016 Jeep Grand Cherokee, the engine benefits from a number of improvements including a two-step variable valve lift (VVL) system which is “designed to remain mostly in low-lift mode until the customer demands more power; then it responds by switching to high-lift mode for improved combustion.” This reduces the amount of pumping work required which, in turn, helps to improve fuel-efficiency by up to 2.7 percent.
The engine has also been equipped with a cooled exhaust-gas recirculation (EGR) system, an upgraded Variable Valve Timing (VVT) system and new fuel injectors which have twice the numbers of holes to optimize atomization and targeting. The engine also weighs up to 4 lbs (1.8 kg) less than the previous unit thanks to lighter components and “innovative weight-reduction strategies.”
In the 2016 Jeep Grand Cherokee, the engine will produce 295 bhp (220 kW) – an increase of 5 bhp (3.7 kW). Chrysler also said the engine’s torque has been increased more than 14.9 percent at speeds below 3,000 rpm. Despite the added performance, the upgraded Pentastar V6 boasts fuel economy improvements of more than six percent.