Patent ID: 6086348
Filing Date: 2000-07-11
Classification: F02M,F04C

Abstract:
A fuel injection pump for an internal combustion engine, comprising a drive shaft (15), with which at least one pump piston of the fuel injection pump is driven via actuating cams and with which a fuel feed pump disposed inside a housing of the fuel injection pump is driven, which comprises an inner ring (10), said inner ring (10) is guided by an inner jacket face (14) on the drive shaft (15), where said inner ring (10) is coupled thereto via a set of teeth (12), and an outer ring (5), between said outer ring (5) and the inner ring (10) positive displacement elements (18) coupled with these rings are disposed, by said displacement elements, fuel is fed from an inlet side (24) to an outlet side (22), and a fuel volume to be fed is enclosed between the inner ring (10), the positive displacement elements (18), the outer ring (5), and two housing parts (5, 25) that tightly guide these parts, the set of teeth form a spur gear, said teeth on a circumference of the drive shaft (15) and tooth (29) on the inner jacket face (14) of the inner ring (10), of said teeth on at least one of the parts, that is, the drive shaft (15) or inner ring (10), the teeth (29) on the jacket face (14) of the inner ring (10), form a spur toothing (12), and the teeth (29), located in the radial planes of the axis of the drive shaft (15) that extend longitudinally of this axis extend in an arc on this respective plane, with an envelope circle which defines the end face (27) of the teeth (29) and whose center point is located in this respective radial plane.