| 摘要 |
An air filter for an engine has an air suction box, and a filter element for dividing the air suction box into an upstream side of an air current and a downstream side of the air current, the upstream side of the suction box being communicated with atmosphere through a suction cylinder of relatively large diameter and an air exhaust cylinder of relatively small diameter, both cylinders being arranged coaxially with each other through a small air space. The air suction box is composed of one half portion and the other half portion connected to each other through the filter element, the air suction cylinder is provided in the one half portion, and the air exhaust cylinder is provided in the other half portion.
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