| 摘要 |
The invention relates to a combination of a main unit, preferably the engine block of an internal combustion engine, and at least one add-on functional unit, preferably an oil filter or fuel filter or a heat exchanger or an oil mist separator, which can be added on to the liquid-carrying or gas-carrying main unit of which there is at least one; with the liquid or the gas also being able to flow through said main unit; with the main unit as well as the add-on functional unit comprising matching elements of a flange connection when adding the add-on functional unit, by forming at least one liquid or gas supply channel and one liquid or gas return channel, said elements engaging each other so as to provide a tight seal. The combination according to the invention is characterized in that the elements of the flange connection are formed not only by at least two parallel line connection pieces, mutually spaced apart, but also by two congruent line boreholes, and in that the flange connection in its connected state brought about by plugging it together, in addition comprises at least one radial seal arranged between the line connection piece and the associated line borehole.
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