Air filter structure in general purpose engine
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorTakahiro Yano
Life of this patent
Estimating the term…
Abstract
A cleaner casing is fitted to a fan casing for covering an air cooling fan for an engine. A cleaner chamber is formed between the fan casing and the cleaner casing. The cleaner chamber accommodates therein a cylindrical filter element. The filter element purifies air which will becomes an intake air for the engine. In an outer periphery of the cleaner chamber, a swirling passage is formed. An air outside the fan casing is captured into the switching passage through a suction opening. The swirling passage allows the air to be passed onto a hollow portion of the filter element after the air has been swirled around the filter element thereby.
Claims14
An air filter structure for a general purpose engine, which comprises:
- a fan casing to cover an air cooling fan for the engine;
- a cleaner casing fitted to the fan casing to define a cleaner chamber therebetween;
- a filter element of a cylindrical configuration accommodated within the cleaner chamber and configured to purify air which will be used as an engine intake air;
- and
- a swirling passage defined in an outer periphery of the filter element within the cleaner chamber and configured to pass the air into a hollow portion of the filter element while the air is swirled around the filter element, wherein a suction opening is provided for introducing air outside the fan casing into the swirling passage, wherein the fan casing includes a fan housing portion for covering the air cooling fan, and a rear wall that divides the cleaner chamber from an interior space in the fan housing portion of the fan casing and that prevents air induced by the air cooling fan from flowing into the cleaner chamber.
Dependencies are inferred from the claim text.