Method and apparatus for fault detection in a torque machine of a powertrain system
US8731765B2 · kind B2 · utility
5Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2011 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Feb 17, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for operating a powertrain system including a torque machine mechanically coupled to an internal combustion engine includes, upon detecting a pending fault associated with a power switch configured to control power flow to the torque machine, disabling torque output from the torque machine and executing retry events. The retry events are iteratively executed with a debounce time period preceding each retry event. Presence of a fault associated with the power switch is detected when a quantity of the retry events during a time window exceeds a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.