Fluid Pump With Shim And Related Methods Of Manufacture
AssigneeTenneco Automotive Operating Company Inc.
InventorOlaf ENKE
Life of this patent
Estimating the term…
Abstract
A fluid pump includes a gear housing with a pocket wall and a base. The pocket wall and the base define a pocket that projects into the gear housing from a pocket surface. The fluid pump also includes a first gear rotatably positioned in the pocket. The first gear is spaced from the pocket surface by a first gap. The fluid pump also includes a second gear rotatably positioned in the pocket that engages the first gear. The second gear is spaced from the pocket surface by a second gap. The fluid pump also includes a selected shim that is selected from a plurality of shims in a shim set. The selected shim has a thickness that results in a desired clearance between the selected shim and the first face or the second face.
Claims20
A fluid pump comprising:
- a gear housing including a pocket wall and a base, the pocket wall and the base defining a pocket that projects into the gear housing from a pocket surface;
- a first gear rotatably positioned in the pocket, the first gear including a first face that is spaced from the pocket surface by a first gap;
- a second gear rotatably positioned in the pocket and engaging the first gear, the second gear including a second face that is spaced from the pocket surface by a second gap;
- and
- a selected shim positioned in the pocket over the first gear and the second gear, wherein the selected shim is selected from a plurality of shims in a shim set by comparing thicknesses of the shims in the plurality of shims to the first gap or the second gap, the selected shim having a thickness that results in a desired clearance between the selected shim and the first face or the second face.
A method of manufacturing a fluid pump comprising:
- inserting a first gear over a post in a pocket of a gear housing such that a face of the first gear is oriented toward a pocket surface of the gear housing and the first gear is configured to rotate around a center axis of the post;
- measuring a height of a first gap between the face of the first gear and the pocket surface of the gear housing wherein the height of the first gap is measured in a direction parallel to the center axis;
- comparing the height of the first gap to thicknesses of shims in a shim set, the shim set comprising a plurality of shims with varying thicknesses;
- choosing a selected shim from the shim set wherein the thickness of the selected shim results in a desired clearance between the first gear and the selected shim;
- and
- inserting the selected shim in the pocket over the first gear.
A fluid pump comprising:
- a gear housing including a pocket wall and a base, the pocket wall and the base defining a pocket that projects into the gear housing from a pocket surface;
- a cover plate secured to the gear housing, the cover plate including a pocket side oriented toward the gear housing and over the pocket;
- a first gear rotatably positioned in the pocket, the first gear including a first face oriented toward the pocket side of the cover plate, wherein the first face is spaced from the pocket side by a first gap;
- a second gear rotatably positioned in the pocket and engaging the first gear, the second gear including a second face that is oriented toward the pocket side of the cover plate, wherein the second face is spaced from the pocket side by a second gap;
- and
- a selected shim positioned in the pocket over the first gear and the second gear, wherein the selected shim is selected from a plurality of shims in a shim set by comparing thicknesses of the shims in the plurality of shims to the first gap or the second gap, the selected shim having a thickness that results in a desired clearance between the selected shim and the first face or the second face.
Dependencies are inferred from the claim text.