US 11,912,166 B2
Methods and system for operating a fuel cell vehicle
David Beck, Ann Arbor, MI (US); Walter Joseph Ortmann, Saline, MI (US); Kenneth James Miller, Pinckney, MI (US); and Thomas Joseph Cusumano, Royal Oak, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Jun. 17, 2019, as Appl. No. 16/443,532.
Prior Publication US 2020/0391615 A1, Dec. 17, 2020
Int. Cl. B60L 58/30 (2019.01); B60L 50/70 (2019.01); H01M 8/04858 (2016.01)
CPC B60L 58/30 (2019.02) [B60L 50/70 (2019.02); B60L 2240/68 (2013.01); B60L 2250/00 (2013.01); B60L 2250/26 (2013.01); H01M 8/04932 (2013.01); H01M 2250/20 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A vehicle operating method, comprising:
via a controller,
anticipating a reduction in driver demand power without receiving a reduction in the driver demand power;
reducing power output of a fuel cell to an electric machine in response to the anticipated reduction in the driver demand power before actually receiving a reduction in the driver demand power, where the anticipated reduction in the driver demand power is a prediction that an operator requested output of a vehicle propulsion system is going to be reduced; and
increasing electric power consumed from an electric energy storage device via the electric machine in response to reducing power output of the fuel cell; then
determining no indication to reduce the driver demand power has been received and that the vehicle is still without the reduction in the driver torque demand within a predetermined amount of time after anticipating the reduction driver demand torque; and
in response to there being no indication to reduce the driver demand power and the vehicle still being without the reduction in the driver torque demand within the predetermined amount of time after anticipating the reduction in driver demand power, reducing the electric power output of the fuel cell to the electric machine, and reducing a rate at which the electric power output of the fuel cell is reduced.