Abstract: The invention relates to an oil separating device for separating out oil droplets conveyed in a crankcase gas flow released by a crankcase ventilation of an internal combustion engine, including at least one separating element, at least part of which the gas flow passes through. The invention provides that the separating element (6) contains a granulate (22) comprised of a plastic. This measure achieves a high separation rate of smaller oil droplets.

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 create an oil separator for use in various engines having different quantities of crankcase gas, said oil separator is designed so that, as an option, helixes (48) having different radial depths of the flow path can be inserted in a housing section for the cyclone separator (30).

Abstract: With known devices for separating oil in the crank housing ventilator, oil is collected on a refined gas side of a filter, which in operation of an internal combustion engine, often cannot drain off. In this manner, the liquid level increases, so that the filter is increasingly clogged by the oil. Finally, the oil is carried away from a gas stream. In this manner, the oil use of the internal combustion engine greatly increases. With the device of the present invention, the oil collected on the refined gas side is collected in a liquid storage unit (10), whereby the liquid storage unit (10) is protected from the stream, so that the gas stream can not carry away oil any longer. The device includes a support body (9), which is impermeable to the stream by means of a cut-off wall (23), in order to prevent a carrying-off of the oil.

Abstract: Known devices for separating liquids using parallel-connected cyclones, when gas flows are fluctuating, have a poor separating action.

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.

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 simplify the design of the oil separator and obtain easier installability, it is provided that 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) which, together with the outside (20) of the cylinder-head hood (4), forms a housing for the oil separator (2).

Abstract: With known devices for separating oil in the crank housing ventilator, oil is collected on a refined gas side of a filter, which in operation of an internal combustion engine, often cannot drain off. In this manner, the liquid level increases, so that the filter is increasingly clogged by the oil. Finally, the oil is carried away from a gas stream. In this manner, the oil use of the internal combustion engine greatly increases. With the device of the present invention, the oil collected on the refined gas side is collected in a liquid storage unit (10), whereby the liquid storage unit (10) is protected from the stream, so that the gas stream can not carry away oil any longer. The device includes a support body (9), which is impermeable to the stream by means of a cut-off wall (23), in order to prevent a carrying-off of the oil.

Abstract: Known pressure-regulating valves, in particular, from the crank housing exhaust, have a regulating membrane made from an elastomer or a plastic. Elastomers, however, have a high permeability for hydrocarbons, an unsatisfactory chemical durability relative to oil, fuel and fuel additives and poor elasticity with low temperatures. Thermoplasts do not have these disadvantages and are better suited as materials for a regulating membrane. According to the present invention, it is proposed to use a membrane made from metal, preferably stainless steel. The membrane has a corrugated or graduated form. The pressure-regulating valve of the present invention has good characteristics with reference to permeability for hydrocarbons, chemical durability and temperature dependence of the elasticity and is substantially simplified through functional integration. The membrane assumes additionally the functions of a restoring spring and a housing cover.

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 create an oil separator for use in various engines having different quantities of crankcase gas, said oil separator is designed so that, as an option, helixes (48) having different radial depths of the flow path can be inserted in a housing section for the cyclone separator (30).

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 simplify the design of the oil separator and obtain easier installability, it is provided that 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) which, together with the outside (20) of the cylinder-head hood (4), forms a housing for the oil separator (2).

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.