US12571467USUSPTO Grant XML

Gear box with lubrication channel

A high speed gear box including ribs, gears with holes, and oil channels configured to divide and distribute lubricating oil and contacting the lubricating oil with a high speed gear box housing wall. The high speed gear box housing and gear box cover have lubricating oil channel which supply lubricants to bearings. Output gears have holes which circulate oil throughout the high speed gear box. As lubricating oil is continuously circulated at locations which may create friction, the thermal energy, which is generated by high speed rotation of gears, shafts, and bearings is absorbed by cooling oil and transferred to housings, latent heat is dissipated to atmosphere through housing wall. This solves the overheating problem of electric high speed gear box.

Patent

Brief

Patent brief

Problem

How can heat, airflow, and thermal load be managed more effectively in compact systems?

Novelty

The high speed gear box housing and gear box cover have lubricating oil channel which supply lubricants to bearings.

Uses

Thermal management, High-density electronics, Cooling loops

Assignee

DANA (WUXI) TECHNOLOGY CO. LTD.

Published

Mar 10, 2026

Inventors

Pradip Jasud, Shailesh Dalvi, Sushil Patil, Yunping Song

Domain

Thermal systems

Plain-English summary

Problem

How can heat, airflow, and thermal load be managed more effectively in compact systems?

Solution

high speed gear box including ribs, gears with holes, and oil channels configured to divide and distribute lubricating oil and contacting the lubricating oil with a high speed gear box housing wall.

Key novelty

The high speed gear box housing and gear box cover have lubricating oil channel which supply lubricants to bearings.

Applications

Thermal managementHigh-density electronicsCooling loops

Relevant search intents

latent heat

Claims preview

1 . A high speed gear box of a vehicle, comprising: a high speed gear box cover including a first plurality of ribs, a first plurality of oil galleries, and a cover oil retainer feature; a high speed gear box housing fastened to the high speed gear box cover, the high speed gear box housing including a second plurality of ribs, a second plurality of oil galleries, and a housing oil retainer feature; and an output helical gear positioned between the high speed gear box housing and the high speed gear box cover, wherein the output helical gear is configured to rotate, wherein rotation of the output helical gear delivers portions of lubricant oil to ball bearings of the high speed gear box, wherein the housing oil retainer feature extends between an input motor side ball bearing and an output motor side ball bearing, and wherein multiple ribs of the second plurality of ribs extend radially from the input motor side ball bearing and the output motor side ball bearing and comprise a common end that forms a Y-shape. 2 . The high speed gear box of claim 1 , wherein the output helical gear is configured to deliver lubricant oil to the first plurality of ribs and to the second plurality of ribs, and wherein the first plurality of ribs and the second plurality of ribs are identical. 3 . The high speed gear box of claim 1 , wherein the first plurality of ribs is configured to deliver lubricant oil to the first plurality of oil galleries and the cover oil retainer feature, and wherein three ribs of the first plurality of ribs comprise a common end and form a Y-shape.

Linked approaches

Phase-change cooling

Cooling architectures that move heat through phase change materials or fluids.

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