OIL FILTER FOR INTERNAL COMBUSTION ENGINE Russian patent published in 1995 - IPC

FIELD: internal combustion engines. SUBSTANCE: filter has housing 1 in whose base inlet passage 2 and outlet passage 3 are provided, coil 4 with perforated core 5 and ends between which filter elements 7 are tightly secured. Taper bush 10 made of filtering material is secured on end 6 which is located at maximum distance from inlet passage 2 and outlet passage 3. Bush 10 forms well for accumulating dirt together with filter elements and prevents it from washing out by oil flowing through bypass valve. EFFECT: enhanced efficiency. 2 dwg