AIR CLEANER FOR INTERNAL COMBUSTION ENGINE Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: air cleaner has case provided with inlet and outlet openings. Bottom part of the case is provided with bottom and oil bath, which is filled with used oil, movable filtering unit for rotation about an axis, drain cock, and apparatus for draining sediment from the oil bath made of a bellows whose bottom end is arranged within the oil bath between the bottom and movable unit and top end is arranged between top edge of the oil bath and the axis of rotation of the movable unit. When operating in rainy season moisture settles down to the movable unit and then drains down to the oil bath by gravity. In so doing water enters bottom end of the bellows owing to a difference between specific weights. As lubricant initially flows out from the bellows it is filled with water and the level in the oil bath is elevated simultaneously. Because of moisture settles the lubricant level achieves maximum value, which is permissible for operational conditions, and fluid begins entering a funnel. EFFECT: enhanced quality of cleaning. 3 dwg