Wheel motor cooling system with equally divided flow
US9853523B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2015 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Aug 28, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2306/03
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric wheel motor cooling system includes first and second electric wheel motors and gear reducers which use hydraulic fluid for cooling and lubrication. Each of the electric wheel motor housings includes a sump and a scavenge pump for return of hydraulic fluid to the hydraulic fluid reservoir. A remotely located hydraulic pump interconnected with the hydraulic fluid reservoir supplies and powers first and second locally located hydraulic motors which supply the electric motors and gears with an equal flow of lubricating and cooling oil. The first and second hydraulic motors, in turn, drive a common output shaft which, in turn, drives first and second scavenge pumps. The first and second scavenge pumps have a higher fluid flow rate than the hydraulic motors ensuring that oil is removed from the first and second electric wheel motor housings thus eliminating any churning losses of the motors or gears.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.