A cyclone flow generates in the blower duct (20) by the first air inflow hole (31) and the suction force of the blower box.

利用该第一空气流入孔(31)和上述吸气箱的吸引力，在吸气管道(20)内产生旋流。

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The utility model comprises an air drum, a setting scale for air inflow, a positive negative pressure gauge, a respiration valve and a face mask;

本实用新型有一个气鼓，一个进气量设定标尺，一个正负压力表，一个呼吸活瓣，一个面罩；

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This article discusses the problem of regulating oil inflow by feeding back the revolutions of the diesel engine and of controlling air inflow with loading signals.

本文讨论了以柴油机转速信号反馈控制进油量，并以负荷信号控制进气量的问题。

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