Motor vehicles – Power – Including traction motor of kind driven by noncompressible...
Reexamination Certificate
2006-12-12
2006-12-12
Ellis, Christopher P. (Department: 3618)
Motor vehicles
Power
Including traction motor of kind driven by noncompressible...
C180S307000, C180S367000, C060S413000
Reexamination Certificate
active
07147078
ABSTRACT:
A system for replenishing a source of pressurized fluid for use in driving the wheels of a motor vehicle includes an accumulator containing fluid at relatively high pressure; a reservoir containing fluid at lower pressure; an engine driveably connected to the wheels and having a variable torque output; a pump/motor driveably connected to the wheels, including an inlet and an outlet, and having a variable volumetric displacement for pumping fluid between the accumulator and the reservoir; and a controller for determining a current cruise charge pressure limit for the accumulator, determining a desired magnitude of pump/motor torque with which to pump fluid to the accumulator, determining a desired magnitude of engine torque with which to drive the pump/motor at the desired magnitude of pump/motor torque, and controlling the engine to produce the desired magnitude of engine torque, to drive the pump/motor in a pumping mode at the desired magnitude of pump/motor torque, and to pump fluid to the accumulator from the reservoir.
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SAE Technical Paper Series 2002-01-3128, R.P. Kepner, Ford Motor Company, Hydraulic Power Assist—A Demonstration of Hydraulic Hybrid Vehicle Regenerative Braking in a Road Vehicle Application, Nov. 18-20, 2002, pp. 1-8.
Carlson Cliff
Teslak Chris
Ellis Christopher P.
Ford Global Technologies LLC
Kelley David B.
MacMillan Sobanski & Todd
Swenson Brian
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