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US 2026/0029049 A1Published application
Electric-axle oil impingement pump
AssigneeSchaeffler Technologies AG & Co. KG
InventorsKyle Nelson, Kelly Nelson
Life of this patent
Estimating the term…
Abstract
Electronic axles may utilize lubrication and cooling of an electric motor with pure parasitic collection of fluid from a gearbox assembly, to be fed into a heat exchanging system to cool the rotor of the electric motor. An impingement pump may feed the fluid, without the cost addition of a dedicated fluid pump. Rotation of the gearset carrier may cause an impingement pump catcher to pump the fluid into an impingement pump pipe.
Claims20
A planetary gearset comprising:
- a sun gear;
- a plurality of planet gears, wherein the plurality of planet gears engage with the sun gear, wherein the plurality of planet gears are configured to revolve around the sun gear;
- a gearset carrier, wherein the gearset carrier holds the plurality of planet gears, wherein the plurality of planet gears cause the gearset carrier to rotate relative to the sun gear as the plurality of planet gears revolve around the sun gear;
- a differential, wherein the gearset carrier houses the differential, wherein the gearset carrier is configured to drive the differential via rotation of the gearset carrier;
- and
- an impingement pump catcher, wherein the impingement pump catcher is affixed to the gearset carrier and is configured to rotate with the gearset carrier, wherein the impingement pump catcher comprises a plate portion and a lip portion, wherein the lip portion radially and axially extends from the plate portion.
3 more elements
A gearbox comprising:
- a planetary gearset comprising:
- a sun gear;
- a plurality of planet gears, wherein the plurality of planet gears engage with the sun gear, wherein the plurality of planet gears are configured to revolve around the sun gear;
- a gearset carrier, wherein the gearset carrier holds the plurality of planet gears, wherein the plurality of planet gears cause the gearset carrier to rotate relative to the sun gear as the plurality of planet gears revolve around the sun gear;
- a differential, wherein the gearset carrier houses the differential, wherein the gearset carrier is configured to drive the differential via rotation of the gearset carrier;
- and
- an impingement pump catcher, wherein the impingement pump catcher is affixed to the gearset carrier and is configured to rotate with the gearset carrier, wherein the impingement pump catcher comprises a plate portion and a lip portion, wherein the lip portion radially and axially extends from the plate portion;
- an impingement pump pipe comprising a pipe inlet, wherein the pipe inlet is aligned with the lip portion;
- and
- a gearbox housing, wherein the gearbox housing defines:
- a gearbox sump, wherein the plurality of planet gears and the impingement pump catcher radially extend into the gearbox sump, wherein the gearbox sump is configured to hold a fluid, wherein rotation of the impingement pump catcher causes the impingement pump catcher to pump the fluid from the gearbox sump into the pipe inlet;
- and
- a ring gear, wherein the ring gear is disposed radially outwards of and axially aligned with the plurality of planet gears, wherein the plurality of planet gears engage with the ring gear.
10 more elements
An electric drive unit comprising:
- a gearbox comprising:
- a planetary gearset comprising:
- a sun gear;
- a plurality of planet gears, wherein the plurality of planet gears engage with the sun gear, wherein the plurality of planet gears are configured to revolve around the sun gear;
- a gearset carrier, wherein the gearset carrier holds the plurality of planet gears, wherein the plurality of planet gears cause the gearset carrier to rotate relative to the sun gear as the plurality of planet gears revolve around the sun gear;
- a differential, wherein the gearset carrier houses the differential, wherein the gearset carrier is configured to drive the differential via rotation of the gearset carrier;
- and
- an impingement pump catcher, wherein the impingement pump catcher is affixed to the gearset carrier and is configured to rotate with the gearset carrier, wherein the impingement pump catcher comprises a plate portion and a lip portion, wherein the lip portion radially and axially extends from the plate portion;
- an impingement pump pipe comprising a pipe inlet, wherein the pipe inlet is aligned with the lip portion;
- and
- a gearbox housing, wherein the gearbox housing defines:
- a gearbox sump, wherein the plurality of planet gears and the impingement pump catcher radially extend into the gearbox sump, wherein the gearbox sump is configured to hold a fluid, wherein rotation of the impingement pump catcher causes the impingement pump catcher to pump the fluid from the gearbox sump into the pipe inlet;
- and
- a ring gear, wherein the ring gear is disposed radially outwards of and axially aligned with the plurality of planet gears, wherein the plurality of planet gears engage with the ring gear;
- an electric motor comprising:
- a rotor, wherein the rotor is coupled to the sun gear;
- and
- a stator;
- and
- an output shaft, wherein the output shaft is coupled to the differential, wherein the output shaft is disposed radially inwards of and axially aligned with the rotor.
17 more elements
Dependencies are inferred from the claim text.