Device and method for improving fuel efficiency of fuel cell vehicle in uphill and downhill driving
AssigneesHyundai Motor Company, Kia Corporation
InventorKi Chang Kim
Life of this patent
Estimating the term…
Abstract
Disclosed are a device and a method for improving the fuel efficiency of a fuel cell vehicle in uphill and downhill driving. The device may calculate an appropriate stack output to be generated from a fuel cell stack based on the SOC of a battery as well as an uphill altitude at which the vehicle traveling on the uphill road has to travel further to reach the highest altitude when determining the degree of the stack output generated from the fuel cell stack when driving on the uphill road, and may prevent fuel consumption from increasing to generate excessive stack output while driving on an uphill road or the durability of the fuel cell stack from being deteriorated.
Claims20
A device for improving a fuel efficiency of a fuel cell vehicle in uphill and downhill driving, the device comprising:
- a driving altitude determination device configured to estimate an uphill altitude at which a vehicle is to travel up to a highest altitude based on a current driving altitude on an uphill road on which the vehicle travels;
- and
- a final stack output determination device configured to determine a stack output to be generated in a fuel cell stack in order for the vehicle to travel to the highest altitude based on a remaining state of charge, SOC, of a battery and the uphill altitude.
A method of improving a fuel efficiency of a fuel cell vehicle in uphill and downhill driving, the method comprising:
- estimating, by a driving altitude determination device, an uphill altitude at which the vehicle is to travel up to a highest altitude based on a current driving altitude on an uphill road on which the vehicle travels;
- and
- determining, by a final stack output determination device, a stack output to be generated in a fuel cell stack in order for the vehicle to travel to the highest altitude based on a remaining state of charge, SOC, of a battery and the uphill altitude.
Dependencies are inferred from the claim text.