Method and apparatus for monitoring a transmission range selector
US9494232B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 7, 2015 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Apr 11, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/1208
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for monitoring a transmission range selector connected to a transmission of a powertrain system is described. The transmission range selector indicates one of a plurality of ranges including Park, Reverse, Neutral, and Drive. The method includes, upon detecting a change in a target transmission range, monitoring whether a signal output from an on-board sensor indicates an achieved range position of the transmission. When the signal output from the on-board sensor does not indicate that the target transmission range has been achieved, monitoring a transmission incorrect direction metric, monitoring a transmission unintended propulsion metric, and monitoring a metric associated with achieving the target transmission range. A fault is detected when any one of the transmission incorrect direction metric, the transmission unintended propulsion metric and the target range achievement elapsed time metric is exceeded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.