An actuator for a separator for separating contaminants from a fluid stream which includes entrained contaminants. The actuator is arranged to move along an actuator axis to adjust an open cross-sectional area of at least one aperture of the separator, and comprises a flexible diaphragm, and a support assembly for the flexible diaphragm. The support assembly is movable along the actuator axis carrying the flexible diaphragm and has an upper support member mounted on a lower support member. A portion of the flexible diaphragm is located between the upper and lower support members. The lower support member comprises an axially extending support portion coupled to a radially extending support portion. The upper support member comprises a diaphragm anti-inversion feature coupled to a radially extending support portion. The diaphragm anti-inversion feature extends such that it axially overlaps at least part of the axially extending support portion of the lower support member.

A diffuser for a jet pump of a separator comprises an inlet defining a first flow area; an outlet in fluid communication with the inlet through which fluid exits the diffuser, in which a flow path extends from the inlet to the outlet, and in which the outlet defines a second flow area greater than the first flow area so that a velocity of fluid flowing through the inlet is greater than a velocity of fluid flowing through the outlet; and a communication port extending through a wall of the diffuser with an inlet in communication with an interior of the diffuser and an outlet in communication with an exterior of the diffuser, in which the communication port inlet is between the diffuser inlet and the diffuser outlet, so that contaminants separated from the fluid stream are removed through the communication port.

An oil separator with a housing, in which is rotatably mounted a rotor containing a drive element, an oil separating element and a shaft for driving the oil separating element of the rotor via the shaft of the rotor around the shaft axis. At least one element of the rotor is seated in such a way that it is displaceable via an actuator element axially from a first inoperative positive to a second operating position.

A marine outboard motor is provided with an internal combustion engine comprising an engine block defining at least one cylinder, an air intake configured to deliver a flow of air to the at least one cylinder, a crankcase in which a crankshaft is mounted for rotation about a crankshaft axis which is substantially vertical when the marine outboard is vertical, and a crankcase ventilation system configured to vent blow-by gases from the crankcase and to supply vented blow-by gases to the air intake. The crankcase ventilation system comprises a lubricant separation chamber for separating lubricant from the blow-by gases. The lubricant separation chamber is defined by the crankcase and extends along the length of the crankcase substantially parallel to the crankshaft axis.

An oil separator including a housing that is separated by a partition assembly. The partition assembly includes a plurality of channels that each extend between a first opening and a second opening for passing oil-laden gases therethrough. A plurality of spiral members are each disposed in one of the channels, each define a helical flow path for guiding the oil-laden gases in the helical flow path about the spiral member to separate the oil from the oil-laden gases. One or more valves may be connected to at least one of the openings of the channels. The valves may be moveable in response to a predetermined pressure being applied against the valve. A fine mist separator assembly may include includes a fibrous pad disposed adjacent to and in alignment with the second openings for absorbing oil after the oil-laden gases have passed through the frames.

A device separates particles such as oil particles from a gas flow, from a blow-by gas of a crankcase ventilation, in an internal combustion engine. The device includes a valve seat that defines a flow passage opening and a movable valve element that can be displaced between a closed position, in which the valve element is in abutting contact with the valve seat and the abutting contact defines an axial abutting point, and at least one open position, in which the valve element is moved from the axial abutting point in an axial actuating direction. The movable valve element has a rotationally symmetrical bowl upstream of the gas flow, and a base of the bowl axially protrudes past the abutting point opposite to the axial actuating direction.

An internal combustion engine for a vehicle and a method for assembling an internal combustion engine. The engine includes a crankcase; a crankshaft disposed at least in part in the crankcase; a cylinder block connected to the crankcase, the cylinder block defining at least one cylinder; at least one piston operatively connected to the crankshaft and disposed in a corresponding cylinder; an oil tank defining an oil reservoir configured to contain oil therein; and a dry-sump lubrication system comprising a pump module for circulating oil throughout the engine. The pump module includes a pump shaft rotatable about a pump shaft axis; at least one pressure pump mounted to the pump shaft and configured to pump oil from the oil tank; and at least one scavenge pump mounted to the pump shaft and configured to draw oil from a respective part of the engine.

An internal combustion engine for a vehicle includes: an oil tank defining an oil reservoir; a pump to pump oil from the oil reservoir to lubricate parts of the engine; and a cyclonic separator disposed within the oil tank and configured to separate gas from oil received therein, the cyclonic separator defining an internal separator chamber for circulation of oil therein, the cyclonic separator comprising: a vortex forming portion configured to cause oil flowing therethrough within the internal separator chamber to define a spiral path in order to separate at least part of a gas content therefrom; an oil inlet for receiving oil into the internal separator chamber, the oil inlet being fluidly connected to the pump; an oil outlet for discharging oil from the internal separator chamber and into the oil reservoir of the oil tank; and a gas outlet for discharging gas from the internal separator chamber.

An air-oil separator assembly can include an air-oil mixture inlet, an air outlet, and an oil outlet, a housing defining a cylindrical separating cavity, and an outlet conduit disposed within the separating cavity, wherein, outlet conduit is adapted to receive oil removed by the air-oil separator assembly from a flow containing an air-oil mixture fluid received by the air-oil mixture inlet.

An oil separating device for separating an oil mist from a blow-by gas is arranged on a flow passage of the blow-by gas. The oil separating device includes an oil separator having an inlet formed at one end thereof and an outlet formed at another end thereof opposite to the one end; a collision wall arranged at a downstream side of the oil separator, and including an uneven portion formed on a surface thereof to face the outlet of the oil separator; and a filter arranged between the oil separator and collision wall. The oil separator is formed such that the oil mist in the blow-by gas coalesces together to form a coalesced oil mist, the filter removes the coalesced oil mist from the blow-by gas, and the collision wall separates a remained oil mist remained in the blow-by gas through the filter.