Invention Grant
US07727390B2 Oil filter device for an internal combustion engine 有权
内燃机油过滤装置

Oil filter device for an internal combustion engine
Abstract:
The invention relates to an oil filter device (1) for an internal combustion engine, comprising a support element (2) and a substantially cylindrical filter cartridge (3) which can be connected, especially screwed, to the support element (2). The invention is characterized in that the filter cartridge is arranged essentially in an upright position while an annular duct (4) which surrounds the filter cartridge (3) in the screwed-on state is embodied inside the support element (2). The duct (4) is fluidically separated from the interior of the filter cartridge (3) when the filter cartridge is screwed on while said separation is eliminated when the filter cartridge (3) is removed. Furthermore, the duct (4) is configured as a drainage duct and is fluidically connected to an oil reservoir when the filter cartridge (3) is removed such that the filter cartridge is easy to replace while no oil is spilled, preventing pollution of the environment.
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