FUEL CELL SYSTEM
To provide a technology that can accurately control the supply flow rate of fuel gas even in a small fuel gas flow rate range.SOLUTION: A fuel cell system includes a fuel gas circulation system that includes a linear solenoid valve and an injector arranged in parallel. The injector is capable of sup...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a technology that can accurately control the supply flow rate of fuel gas even in a small fuel gas flow rate range.SOLUTION: A fuel cell system includes a fuel gas circulation system that includes a linear solenoid valve and an injector arranged in parallel. The injector is capable of supplying fuel gas within a smaller flow rate range than the required flow rate of fuel gas, and the linear solenoid valve is configured to be able to supply a larger flow rate range among the required flow rates. In a flow rate range in which the required flow rate of the fuel gas is less than a first threshold value that is a flow rate that can be supplied by the injector, the injector is used to adjust the supply flow rate of the fuel gas, and in a flow rate range in which the flow rate is equal to or higher than the first threshold, a linear solenoid valve is used to adjust the supply flow rate.SELECTED DRAWING: Figure 4
【課題】燃料ガスが小流量域でも燃料ガスの供給流量を精度よく制御できる技術を提供する。【解決手段】燃料電池システムは、リニアソレノイドバルブとインジェクタとを並列配置で備える、燃料ガスの循環系を備える。インジェクタは、燃料ガスの要求流量のうちより小流量の範囲で燃料ガスを供給可能であり、リニアソレノイドバルブは、前記要求流量のうちより大流量の範囲で供給可能に構成されている。燃料ガスの要求流量がインジェクタによって供給可能な流量である第１の閾値未満の流量域ではインジェクタを用いて燃料ガスの供給流量を調整し、第１の閾値以上の流量の流量域ではリニアソレノイドバルブを用いて供給流量を調整する。【選択図】図４ |
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