所述阀可以具有一对推动阀关闭的辅助弹簧。

The valve may have a pair of helper springs urging the valve closed.

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增大线圈电流将加大电磁的力，因此推动阀芯压缩弹簧产生一个更大的位移。

Increasing the coil current will increase the solenoid force and hence move the spool a greater amount against the spring.

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在此比例电磁铁被用来推动一个锥阀芯通过一个弹簧压缩阀座。

In this case a proportional solenoid is used to push a poppet against a seat via a spring.

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