Hydraulic pressure supply system of automatic transmission
US9494231B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2014 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Feb 2, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0037
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic pressure supply system of an automatic transmission may include a low-pressure oil pump generating low hydraulic pressure while being driven by an engine to exhaust the low hydraulic pressure to a first low-pressure channel, a high-pressure oil pump raising a portion of the hydraulic pressure in the first low-pressure channel to a high pressure while being driven by an electric motor to exhaust the hydraulic pressure to a first high-pressure channel, a low-pressure regulator valve controlling the hydraulic pressure while exhausting a portion of the hydraulic pressure to supply the controlled hydraulic pressure to a low-pressure part through a second low-pressure channel, and a high-pressure regulator valve controlling the hydraulic pressure while re-circulating a portion of the hydraulic pressure to the low-pressure part through single or two re-circulation channels according to the pressure to supply the controlled hydraulic pressure to a high-pressure part through the second high-pressure channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.