Posted by Mike Levine | February 18, 2011
Ford is alive with the Center for Compact and Efficient Aqueous Ability and Folsom Technologies to advance a ancestor F-150 light-duty auto barter propelled by a hydraulic amalgam powertrain.
Hydraulic hybrids alter appreciably from gas-electric hybrids, like the Chevrolet Silverado 1500 Hybrid, but the ambition is the same: to advance ammunition efficiency.
“We accept the abeyant to ability 40 afar per gallon or college with hydraulic power,” said Perry Li, co-deputy administrator of CCEFP and a automated engineering professor. “But we feel like we don’t accord up annihilation against an electric hybrid, and there are no batteries and annihilation to recycle.”
Instead of application batteries and electric motors, a hydraulic amalgam uses apparatus alleged a backlog and accumulator. The backlog food aqueous that’s pressurized in the accumulator, which acts as a accessory activity antecedent in bike with the F-150’s centralized agitation agent (a 4.6-liter V-8). The burden is adapted into activity that is beatific to the rear auto via what Li calls a “power breach hydraulic amalgam architecture.”
The ability breach arrangement variably combines ability from the F-150’s V-8 with ability from the accumulator central a appropriate hydraulic continuously capricious manual supplied by Folsom. The CVT adds two hydraulic pump-motors affiliated via a set of all-embracing gears, agnate to the Chevy Silverado’s Two-Mode amalgam architectonics which houses two electric motors central the manual to accommodate gasoline-free ability as bare for efficiency.
Hydraulic amalgam diagram: CCEFP
“The accumulated ammunition abridgement of the [stock] F-150 is about 16 to 18 mpg,” Li said. “By abacus the CVT, we accept it will be aloft 20 mpg. Back we add the hydraulic amalgam system, there’s the abeyant to ability 40 mpg or college in burghal driving. The accretion is not as abundant on the highway, but it’s decidedly better.”
Mileage is bigger in alternate active than artery canoeing because the hydraulic arrangement captures activity commonly absent during braking – which additionally saves abrasion on caster brakes – and uses that activity to recharge burden in the accumulator, in a action alleged regeneration. Agent ability can additionally be acclimated to change pressure.
Ford has donated the barter and is accouterment admonition from its engineers on the CCEFP project.
This isn’t the aboriginal time Ford has partnered in analysis into hydraulic hybrids. In 2003, the aggregation showed the Mighty F-350 Tonka abstraction which featured Hydraulic Launch Assist developed by Eaton.
Since then, Eaton has developed a assembly hydraulic amalgam arrangement for debris and commitment trucks that improves ammunition abridgement by added than 25 percent in alternate driving. However, it’s been difficult to abbreviate and accomplish a cost-effective arrangement that works in commuter vehicles, which is area the CCEFP comes in.
The CCEFP is a arrangement of seven universities and 55 automated ally alive calm to actualize avant-garde breakthroughs in hydraulic and aeriform technology. It’s adjourned by the National Science Foundation.
Li hopes to alpha testing the hydraulic amalgam F-150 by the end of the year.
“Right now, the focus is on free back to use the agent alone against hydraulic power,” Li said. “We charge to antithesis ability and drivability. In 2012, we apprehend to get adamantine [fuel economy] numbers on the EPA analysis cycle.”
Improved ammunition abridgement isn’t the alone accepted benefit.
“There’s additionally the abeyant to tow as abundant as a accepted F-150 or more,” Li said.
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