| 摘要 |
An air filter suitable for use on an engine is provided. The air filter includes a hollow filter body into which is positioned a filter installation unit capable of turning within the filter body and constructed to receive a filtering filter. A main air flow opening is formed in one side of the filter body, and a sub air flow opening is formed in another side of the filter body. A dust pick-up part is formed in the filter body having a dust outlet. A ventilator is provided to direct filtered air against an interior surface of a turning filtering filter, and foreign matter accumulated on an exterior surface of the filtering filter is dislodged into the dust pick-up part before being forcibly expelled through the dust outlet.
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