Pre-remedial fault control in a transmission
US10030765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2016 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Nov 12, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/1232
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vehicle includes a prime mover, transmission, drive axle, and controller. The controller identifies clutches involved in establishing or maintaining a requested gear state, and detects an impending fault condition of the transmission. The controller also executes a pre-remedial control action in response to the impending fault condition, and places the transmission in a hydraulic default mode when the remedial control action does not clear the fault condition after a calibrated duration. A system includes the transmission and controller. A method for providing pre-remedial control of a transmission includes identifying clutches of the transmission that are involved in establishing or maintaining a requested gear state, and detecting an impending fault condition. The method further includes executing a pre-remedial control action in response to the impending fault condition and placing the transmission in a hydraulic default mode if the remedial control action does not clear the fault condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.