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Ford Articles and Road Tests
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2010 Ford Flex Limited AWD EcoBoost First Impressions by Rob Rothwell / Auto123.com |
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EcoBoost: Ford’s new technology enabling the output of a V8 engine while returning the economy of a fuel efficient V6, and how sweet is that! Increasing power, performance and efficiency without increasing displacement is the strategy underpinning Ford’s EcoBoost technology. To demonstrate their success, Ford invited a flock of journalists into the Rockies outside of Boulder, Colorado to experience the dividends of their work as it applies to the Flex.
But first the technical stuff: Twin turbochargers are the key The technology, aptly named EcoBoost by Ford, utilizes two lightweight water-cooled turbochargers hooked-up in parallel, meaning one fed by each bank of Ford’s latest Duratec V6, as the foundation of their EcoBoost strategy. Due to minimal mass the turbines spool-up rapidly, eliminating turbo-lag while extracting power from wasted exhaust gasses; but the instant reaction time of the turbos is only part of the equation. High-pressure direct injection of fuel into each cylinder ensures a more complete burn upon combustion, which increases efficiency and lowers tailpipe emissions. The EcoBoost engine also benefits from an upgraded lightweight die-cast aluminum block along with other improved internal components to ensure durability now that a 10.0:1 compression ratio is in effect. Oil-cooled pistons have also been adopted to extend longevity. The net result of EcoBoost is the production of maximum torque at only 1,500 rpm carried through to 5,000-plus rpm, the outcome of which is an immense improvement in driveability over a conventional V6. The Flex EcoBoost Engine Ford will ultimately apply its EcoBoost technology broadly throughout its range of engines. For our purposes, we will examine the 3.5-litre EcoBoost V6 powering the 2010 Flex, and I’ve got to say that the ratings for this mighty mill blew me away. Are you ready for it? 355 horsepower @ 5,700 rpm and an amazing 350 pound-feet of torque at the aforementioned paltry 1,500 rpm. Those numbers put many-a V8 to shame. This robust power is delivered to all four Flex wheels through a new 6-speed automatic transmission specifically designed to handle the increased punch and anticipated tow duties.
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