More punch for the 3.6-liter Pentastar V-6 - Fleet Owner (blog)
According to Bob Lee ( at right ), FCA North America's VP for engine, powertrain, electrified propulsion and systems engineering ( can you fit all that on a business card. ) this redesigned V-6 delivers fuel-economy improvements of more than 6% while increasing torque more than 14. 9%. a torque boost that occurs at engine speeds below 3,000 rpm, where such elevated torque has its most profound impact on the driving... “We focused our efforts on improving efficiency and providing greater customer satisfaction in a package that delivers superior value,” he explained in a statement, with increased fuel-efficiency the “key impetus” in redesigning 3. 6-liter Pentastar. Lee said FCA powertrain engineers evaluated multiple technologies, accumulating more than 4. 7 million customer-equivalent miles using computer simulation and physical tests, with no improvement in fuel economy proving “too small to chase. He believes that “most compelling enhancement” to FCA’s 3. 6-liter Pentastar is two-step variable valve lift or “VVL,” which is designed to remain mostly in low-lift mode until the customer demands more power. Lee said the result is less overall pumping work, which on its own, accounts for a fuel-economy improvement of up to 2. 7% compared with the 3. 6-liter Pentastar’s previous iteration. Source: fleetowner.com
