Slip and energy based clutch protection
US9643614B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2015 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Sep 2, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2710/0666
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Clutch protection systems and methods include calculating a slip of a clutch of a manual transmission based on an input rotational velocity of a flywheel coupled to a torque generating system. The calculated slip is used to calculate an energy into the clutch. In one implementation, an accumulated energy into the clutch is calculated based on a rate of the calculated energy and a torque request for the torque generating system is limited based on the accumulated energy. In one implementation, an energy capacity remaining in the clutch until a threshold indicative of damage occurring is calculated based on the calculated energy and a limited torque request for the torque generating system is generated. The limited torque request corresponds to an amount of allowable torque before full clutch engagement occurs, where this time is calculable based on a rate at which the clutch slip is decreasing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.