Importance

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Abstract

A fuel pump outside a fuel tank, having an enhanced-durability bearing. The fuel pump includes: a drive shaft; a rotary swash plate fixed to the drive shaft; a cylinder; and a piston biased such that one end thereof abuts against the rotary swash plate and movable inside of the cylinder according to the rotation of the rotary swash plate. The rotary swash plate includes an annular rotary plate that abuts against the piston and a bearing having a drive side first race fixed to the drive shaft, a driven side second race fixed to the annular rotary plate, and a plurality of rolling elements between the first race and the second race. The bearing has an inclination axis inclined with respect to the axis of the drive shaft. A straight line connecting contact points and between the rolling element and the races and is not perpendicular to the inclination axis.

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First Claim