Vehicle transmission system for controlling clutch temperature
US6645121B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Aug 13, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/725
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vehicle transmission system and method of controlling a vehicle transmission are provided that control clutch temperatures to extend clutch life. The system is comprised of an input drive shaft configured to be driven by an engine, an output drive shaft configured to drive a drive mechanism and a plurality of torque-transmitting devices connecting the input drive shaft to the output drive shaft and configured to engage and disengage to provide a transition between a plurality of operating ratios. The system is also comprised of a control module configured to calculate a temperature of the plurality of transmitting devices based at least in part upon a shifting status of the plurality of transmitting devices. The control module is further configured to conduct at least a first modification if the temperature is greater than a first predetermined temperature and a second modification if the temperature is greater than a second predetermined temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.