Closed-loop, valve-based transmission control algorithum
US7194349B2 · kind B2 · utility
5Cited by
17References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2004 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Sep 14, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/7109
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A system for controlling pressure in a transmission comprises a transmission control unit, a valve controller that receives a desired pressure as input from the transmission control unit, a valve driver, a valve that regulates an amount of fluid in a transmission clutch, and a pressure transducer that reads a pressure in the transmission clutch and outputs a pressure reading to the valve controller, wherein the valve controller comprises logic for outputting to the valve driver an instruction for controlling the valve, the instruction being formulated using the desired pressure and the pressure reading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.