Fuel cell system and control method thereof
AssigneeNissan Motor Co., Ltd.
InventorYoshitomo ASAI
Life of this patent
Estimating the term…
Abstract
In order to improve estimation accuracy of a purging amount, a fuel cell system comprises a supply valve that controls a supply of an anode gas into an anode system, a purge valve that discharges an off-gas from the anode system, a pressure detecting unit configured to estimate or measures a pressure inside the anode system, and a purging amount estimating unit configured to estimate a purging amount of the off-gas discharged from the anode system through the purge valve based on a pressure change inside the anode system during a purge valve close duration in a supply valve open state and a pressure change inside the anode system during a purge valve close duration in a supply valve close state.
Claims13
-12. (canceled)
A fuel cell system having a fuel cell supplied with an anode gas and a cathode gas to generate electricity from the fuel cell depending on a load, comprising:
- a supply valve for supplying the anode gas into an anode system of the fuel cell system;
- a purge valve for discharging an off-gas from the anode system;
- a pressure detecting unit configured to that estimate or measures a pressure inside the anode system;
- and
- a purging amount estimating unit configured to estimate a purging amount of the off-gas discharged from the anode system through the purge valve based on a pressure change inside the anode system during a purge valve close duration in a supply valve open state and a pressure change inside the anode system during a purge valve close duration in a supply valve close state.
A control method of a fuel cell system having a fuel cell supplied with an anode gas and a cathode gas to generate electricity from the fuel cell depending on a load,
- a supply valve for supplying the anode gas into an anode system of the fuel cell system;
- a purge valve for discharging an off-gas from the anode system;
- and
- a pressure detecting unit configured to estimate or measures a pressure inside the anode system;
- the control method comprising
- estimating a purging amount of the off-gas discharged from the anode system through the purge valve based on a pressure change inside the anode system during a purge valve close duration in a supply valve open state and a pressure change inside the anode system during a purge valve close duration in a supply valve close state
Dependencies are inferred from the claim text.