Coolant pump for an internal combustion engine
AssigneeFord Global Technologies, LLC
InventorsJustin Craft, William Michael Sanderson
Life of this patent
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Abstract
A pump is provided with a pump housing defining a volute chamber positioned between a central inlet and an impeller face, with the housing defining a recess intersecting the face and surrounding an aperture, and the housing defining sequentially first and second ramps, a wall section, and a protrusion extending into the recess. An impeller is positioned within the chamber adjacent to the face, with the impeller connected to a drive shaft extending through the aperture. A method is provided for cooling a drive shaft sealing member by controlling fluid flow through the pump.
Claims16
A pump comprising:
- a housing defining a volute chamber extending to an impeller face, the housing defining a recess formed by a dished wall intersecting the impeller face and surrounding a pump drive shaft aperture, the housing defining sequentially first and second ramps, a wall section, and a protrusion extending from the dished wall into the recess, wherein the first and second ramps and the wall section intersect the impeller face, wherein a channel is defined by the second ramp, the wall section, and the dished wall, the channel being positioned radially opposite an outlet from the volute chamber, wherein the first ramp is positioned between the outlet and the second ramp, and the protrusion is positioned between the wall section and the outlet,
- wherein the first and second ramps are defined by first and second upstream inclined faces, respectively, wherein an area of the first inclined face is less than an area of the second inclined face;
- and
- wherein a width of the channel is less than half of a distance between the first and second ramps.
A pump comprising:
- a pump housing defining a volute chamber positioned between a central inlet and an impeller face, the housing defining a recess intersecting the impeller face and surrounding an aperture, the housing defining sequentially first and second ramps, a wall section, and a protrusion extending into the recess;
- and
- an impeller positioned within the chamber adjacent to the impeller face, the impeller connected to a drive shaft extending through the aperture,
- wherein a channel is defined between the second ramp and the wall section, wherein the channel is radially opposite an outlet from the volute chamber, and wherein a width of the channel is less than half of a distance between the first and second ramps.
Dependencies are inferred from the claim text.