Hydraulic system for a motor vehicle transmission
US10612648B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 2015 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Mar 11, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/688
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The transmission includes at least ten gear-selection pressure chambers which are provided for the selection of a plurality of transmission gears, at least two actuation valves, each of which is provided for setting at least one actuation pressure for the gear-selection pressure chambers, at least one first selection valve unit, at least one second selection valve unit, and at least one third selection valve unit which are provided for connecting the actuation valves to the gear-selection pressure chambers. The second selection valve unit is directly connected to four gear-selection pressure chambers in order to transmit actuation pressure and the third selection valve unit is directly connected to six other gear-selection pressure chambers and directly to the second selection valve unit in order to transmit actuation pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.