Oil separating device for crankshaft gases of an internal combusion engine
AssigneeRobert Bosch GmbH
InventorsJuergen Stegmaier, Bruno Hezel, Dietmar Uhlenbrock
Life of this patent
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Abstract
The invention concerns an oil separator (2) for crankcase gases of an internal combustion engine, comprising a preliminary separator (28), a cyclone separator (30), a fine separator (32) and, if necessary, a valve device (36) that are provided in a cascade arrangement on a cylinder-head cover (4) of the internal combustion engine; in order to reduce the mutual interference of flowing crankcase gas and separated fluid, an oil drain opening (44) is provided upstream from the cyclone separator (30) in the flow or cascade direction, through which oil separated in the preliminary separator can be returned.
Claims9
An oil separator (2) for crankcase gases of an internal combustion engine, comprising a preliminary separator (28), a cyclone separator (30), a fine separator (32) and, if necessary, a valve device (36) that are provided in a cascade arrangement on a cylinder-head cover (4) of the internal combustion engine,
- wherein an oil drain opening (44) is provided ahead of the cyclone separator (30) in the flow or cascade direction through which oil separated in the preliminary separator (28) can be returned.
The oil separator according to one of the preceding claims,
- wherein the preliminary separator (28), the cyclone separator (30), the fine separator (32) and the valve device (36) provided, if necessary, are located on the outside (20) of the cylinder-head hood (4) and are covered by a housing half-shell (6) that, together with the outside (20) of the cylinder-head hood (4), forms a housing for the separator (2).
Dependencies are inferred from the claim text.