Spray oil cooling device for a stator core periphery
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsKonstantin Kordvee, Benjamin Krank, Matthias Lepschi
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Abstract
A spray oil cooling device for a stator core periphery of an electric drive unit in a motor vehicle comprising an oil pump for providing a cooling oil mass flow and an oil line for guiding the cooling oil mass flow starting from the oil pump to at least one first oil spray area at stator winding heads of a first stator end face, and at least one second oil spray area at stator winding heads of a second stator end face, wherein the oil line is designed to guide the cooling oil mass flow between the first and the second oil spray area, remote from a stator core cooling sleeve.
Claims19
A spray oil cooling device for a stator core periphery of an electric drive unit in a motor vehicle, comprising:
- an oil pump for supplying a mass flow of a cooling oil, and
- an oil line for routing the cooling oil starting from the oil pump to a first oil spraying region at first stator winding heads, and a second oil spraying region at second stator winding heads,
- wherein the oil line routes the cooling oil between the first and the second oil spraying region away from a stator core cooling shell,
- wherein the oil line comprises:
- a first line branch which routes cooling oil from the oil pump to the first oil spraying region, and
- a second line branch which branches off from the first line branch and routes cooling oil to the second oil spraying region through an axial region of the stator core, wherein the second line branch is designed, in the axial region or completely, as a hollow tube with a wall thickness which is less than the cross-section of the oil line in the second line branch.
Dependencies are inferred from the claim text.