VANE OIL PUMP

摘要

A vane fluid pump for a vehicle component has a cam defining a continuous inner wall surrounding a cavity, and an inner rotor supported within the cam. The inner rotor has a cylindrical outer wall defining a series of slots equally spaced about the outer wall. A series of vanes is provided with each vane positioned within a respective slot of the inner rotor and extending outwardly to contact the continuous inner wall of the cam. Each vane provides a fluid barrier between adjacent pumping chambers formed between the cam and the inner rotor. A first vane of the series of vanes defines a passageway thereacross to fluidly connect adjacent pumping chambers. The passageway is configured to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise. At least another vane is configured without any fluid passageways.

主权项

1. A vane fluid pump for a vehicle component comprising:
a cam defining a continuous inner wall surrounding a cavity; an inner rotor supported within the cam, the inner rotor having a cylindrical outer wall defining a series of slots equally spaced about the outer wall; and a series of vanes, each vane positioned within a respective slot of the inner rotor and extending outwardly to contact the continuous inner wall of the cam, each vane providing a fluid barrier between adjacent pumping chambers formed between the cam and the inner rotor, wherein a first vane of the series of vanes defines a passageway thereacross and fluidly connecting adjacent pumping chambers, the passageway configured to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise.