VORTEX-TYPE FUEL PUMP IMPELLER FOR DELIVERY OF FUEL FROM TANK TO INTERNAL COMBUSTION ENGINE (VERSIONS) Russian patent published in 2006 - IPC F02M37/00 F04D5/00 

FIELD: manufacture of engines; fuel supply systems of internal combustion engines.

SUBSTANCE: according to first version, fuel pump impeller has ring of blades evenly distributed over circumference; slots are made in impeller body between these blades; base of each slot have rounded-off section in form of segment for example in section passing through axis of rotation of impeller and center of slot. Thickness of impeller blades in way parallel to their axis increases from end surfaces of impeller to surfaces of adjoining of blades to impeller body. Minimum thickness of blades in planes of end surfaces of impeller is constant. Maximum thickness of blades is found on external radial tips of blades at point of their adjoining to impeller body. According to second version, thickness of blades of fuel pump impeller smoothly increases in radial direction relative to center from internal radial tips of blades towards their external radial tips. Blades have minimum thickness on their internal radial tips and maximum thickness at their external radial tips.

EFFECT: enhanced bending strength of blades.

4 cl, 10 dwg