Hydraulic control system for an automatic transmission having analog electronic transmission range selection
US8894545B2 · kind B2 · utility
6Cited by
3References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2013 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Jun 7, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20024
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic control system for a transmission includes a source of pressurized hydraulic fluid that communicates with an electronic transmission range selection (ETRS) subsystem. The ETRS subsystem includes an ETRS valve, a park mechanism, a mode valve, a latch valve assembly, and a plurality of solenoids. The ETRS subsystem is configured to provide desired operating conditions during a plurality of potential failure conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.