Filter mechanism for internal combustion engines
US8246702B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2009 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Oct 8, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/024
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a filter device (10), in particular for filtering intake air of an internal combustion engine. The filter device (10) comprises a separator that is embodied in particular as a cyclone preseparator (26), moreover a main filter element (36) exchangeably arranged in a housing compartment (68) of the filter housing (12), as well as a secondary filter element (38) that in the flow direction of the fluid to be cleaned is arranged downstream. The housing compartment (68), for facilitating premounting of the main filter element (36) therein, comprises insertion stays (64). The main filter element (36) is embodied in particular as a double bellows filter, comprising a first radially inwardly positioned filter bellows (40) and a second radially outwardly positioned filter bellows (42) surrounding it. Upon closing of a servicing cover (18) that closes the housing compartment (68) a sealing force is generated that acts onto the main filter element (36) and is maintained in the closed state of the servicing cover (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.