Pump stage assembly, external gear pump, use of a pump stage assembly and vehicle transmission
AssigneeVitesco Technologies GmbH
InventorChristian Böhm
Life of this patent
Estimating the term…
Abstract
A pump stage assembly for supplying lubricating oil, comprising: at least two pump suction stages and at least one pump pressure stage. The pump suction stages and the pump pressure stage are spaced apart from one another in a pump housing PG and have a common drive shaft. The pump suction stages are formed by a first assembly of at least three intermeshing external gearwheels and wherein the pump pressure stage is formed by a second assembly of two intermeshing external gearwheels. Here at least two respective tooth center points of the first external gearwheel assembly and the respective tooth center points of the second external gearwheel assembly are arranged in a common plane E-E which intersects the pump housing PG in a longitudinal direction.
Claims16
A pump stage assembly configured to supply a lubricating oil to at least one consumer, comprising:
- a pump housing;
- at least two pump suction stages formed by a first external gearwheel assembly of at least three intermeshing external gearwheels that lie in a first plane, wherein one of the at least three intermeshing external gearwheels has an axial height different than the other two, and configured to:
- draw in the lubricating oil from a first oil container functioning as a dry sump, and
- deliver the lubricating oil to a second oil container functioning as an oil tank;
- and
- at least one pump pressure stage formed by a second external gearwheel assembly of two intermeshing external gearwheels which lie in a second plane, wherein each of the two intermeshing external gearwheels have different axial heights, and configured to:
- draw in the lubricating oil from the second oil container, and
- deliver the lubricating oil to a consumer,
- wherein the at least two pump suction stages and the at least one pump pressure stage are arranged spaced apart from one another in the pump housing and have a common drive shaft,
- wherein the first plane and the second plane lie parallel to one another,
- wherein at least two respective tooth center points of the first external gearwheel assembly and respective tooth center points of the second external gearwheel assembly are arranged in a common plane that intersects the pump housing in a longitudinal direction and lies orthogonal to the first and second planes.
A multiple action, external gear pump having a pump stage assembly configured to supply a lubricating oil to at least one consumer, comprising:
- a pump housing;
- at least two pump suction stages formed by a first external gearwheel assembly of at least three intermeshing external gearwheels that lie in a first plane, wherein one of the at least three intermeshing external gearwheels has an axial height different than the other two, and configured to:
- draw in the lubricating oil from a first oil container functioning as a dry sump, and
- deliver the lubricating oil to a second oil container functioning as an oil tank;
- and
- at least one pump pressure stage formed by a second external gearwheel assembly of two intermeshing external gearwheels which lie in a second plane, wherein each of the two intermeshing external gearwheels have different axial heights, and configured to:
- draw in the lubricating oil from the second oil container, and
- deliver the lubricating oil to a consumer,
- wherein the at least two pump suction stages and the at least one pump pressure stage are arranged spaced apart from one another in the pump housing and have a common drive shaft,
- wherein the first plane and the second plane lie parallel to one another,
- wherein at least two respective tooth center points of the first external gearwheel assembly and respective tooth center points of the second external gearwheel assembly are arranged in a common plane that intersects the pump housing in a longitudinal direction and lies orthogonal to the first and second planes.
A vehicle transmission for driving a vehicle, wherein the vehicle transmission has a pump stage assembly configured to supply a lubricating oil to at least one consumer, comprising:
- a pump housing;
- at least two pump suction stages formed by a first external gearwheel assembly of at least three intermeshing external gearwheels that lie in a first plane, wherein one of the at least three intermeshing external gearwheels has an axial height different than the other two, and configured to:
- draw in the lubricating oil from a first oil container functioning as a dry sump, and
- deliver the lubricating oil to a second oil container functioning as an oil tank;
- and
- at least one pump pressure stage formed by a second external gearwheel assembly of two intermeshing external gearwheels which lie in a second plane, wherein each of the two intermeshing external gearwheels have different axial heights, and configured to:
- draw in the lubricating oil from the second oil container, and
- deliver the lubricating oil to a consumer,
- wherein the at least two pump suction stages and the at least one pump pressure stage are arranged spaced apart from one another in the pump housing and have a common drive shaft,
- wherein the first plane and the second plane lie parallel to one another,
- wherein at least two respective tooth center points of the first external gearwheel assembly and respective tooth center points of the second external gearwheel assembly are arranged in a common plane that intersects the pump housing in a longitudinal direction and lies orthogonal to the first and second planes.
Dependencies are inferred from the claim text.