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    • 7. 发明授权
    • Method and system for metered supply of methanol and/or water to a
fuel-cell system
    • 向燃料电池系统计量供应甲醇和/或水的方法和系统
    • US5766786A
    • 1998-06-16
    • US504493
    • 1995-07-20
    • Wolfram FleckNorbert WiesheuUwe Benz
    • Wolfram FleckNorbert WiesheuUwe Benz
    • H01M8/04119H01M8/0612H01M8/04
    • H01M8/04119H01M8/0612H01M2300/0082
    • A method and a system meters a supply of methanol and/or water out of a storage reservoir to a fuel-cell system by way of a conveying conduit with a metering valve. A constant mass flow is conveyed out of the storage reservoir into the conveying conduit via a conveying pump. The differential pressure between the conveying conduit and fuel-cell system is set at a predetermined value via a differential-pressure controller which is arranged in a return conduit provided between the conveying conduit and storage reservoir. The methanol and/or water supplied can be set, for example, by varying the opening and closing times of a solenoid valve. A second metering stage can be provided in the return conduit downstream of the first metering stage. When two separate metering systems are used, a common pump motor can be employed.
    • 方法和系统通过具有计量阀的输送管道来计量甲醇和/或水从储存容器供应到燃料电池系统。 恒定的质量流量通过输送泵从存储容器输送到输送管道中。 输送管道和燃料电池系统之间的差压通过差压控制器设定在预定值,差压控制器设置在设置在输送管道和储存容器之间的回流管道中。 可以例如通过改变电磁阀的打开和关闭时间来设置供应的甲醇和/或水。 第二计量台可以设置在第一计量台下游的返回管道中。 当使用两个单独的计量系统时,可以使用公共的泵马达。