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Old June 25th, 2016, 09:25 AM
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Default Ford Shows Off Updated EcoBoost Powertrain

Ford unveiled an all-new 3.5-liter EcoBoost V-6 and 10-speed automatic transmission in Dearborn, Mich., on Tuesday. The new multiversion powertrain combination will appear first in the all-new 2017 Ford F-150 Raptor pickup truck and then will move into the full lineup of 2017 F-150s arriving in dealer showrooms later this fall.

A Familiar New Engine

Despite maintaining a 3.5-liter displacement, the new EcoBoost twin-turbo V-6 is a completely new motor, according to Ford, maintaining only the bore spacing and deck height with the current 3.5-liter EcoBoost V-6 to make for an easier manufacturing transition from old engine to new.

The block, cylinder heads, turbochargers, fuel-injection system and everything else is new. The result is a motor that pumps out 30 more pounds-feet of torque than the current engine, bringing the total output to 450 pounds-feet. This will give the 3.5-liter EcoBoost engine a class-leading torque number, greater than any other V-8 or V-6 motor in the half-ton segment.

Ford focused on a few key areas to bump up the output of the motor while simultaneously making it lighter, smoother and more fuel efficient. The engine will make use of dual fuel-injection systems — a direct-injection system like the current motor has for precise control of fuel delivery, and a new secondary port-fuel injection system to provide greater fuel volume per cylinder, good for high-load demands for power. Like the current motor, the new EcoBoost 3.5-liter V-6 will run on regular gasoline.

New turbochargers will use new, lightweight turbine wheels made out of Mar-M-247 alloy developed for the aerospace industry. They employ electrically activated waste gates for better responsiveness, while the engine uses new hollow camshafts to reduce weight. Finally, stop-start technology will be standard on the new twin-turbo motor but will be tuned for truck use - meaning that it will deactivate when the truck is in Tow/Haul mode or when its four-wheel-drive system is engaged.

Two versions of this twin-turbo V-6 will be used on the 2017 F-150. A basic motor producing 450 pounds-feet of torque will be used for the F-150, while a high-output version will be used for the new Ford Raptor set to debut later this summer. Ford did not provide horsepower or fuel-economy numbers.

Ten Forward Speeds

10-speed-transmission II

When the new EcoBoost engine arrives, it will be mated exclusively to Ford's new 10-speed automatic transmission. New from the ground up, it's been developed in a joint venture with GM, but don't expect it to share much in terms of gear ratios or tuning with a Chevrolet Silverado, where it's likely to be a nine-speed. The 10-speed maintains almost the same dimensions as Ford's six-speed automatic, but it will provide better acceleration and performance thanks to a few key design features.

Wider spacing in the gear ratios plus three overdrive gears should help, as will the exclusive use of aluminum, steel and composite materials — there isn't a single piece of cast iron anywhere in the transmission, a first for Ford. Additionally, an integrated torque converter/turbine clutch helps to maintain the compact dimensions of the transmission.

So the new transmission should be lighter, more responsive, more efficient, and thanks to some new software tuning, provide improved performance when towing and hauling. Look for the new engine and transmission combination to start arriving in model-year 2017s, which should be available this fall.

see photos here

more info & photos on the 10 speed trans here

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