Torque-based shift scheduling during traction control for an automotive vehicle
US6506141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2001 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Jan 22, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0227
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for controlling the capacity of friction clutches and brakes in a multiple-ratio vehicle transmission and for simultaneously establishing ratio shift point scheduling to effect a desired vehicle speed at which ratio changes occur while the vehicle is in a traction control mode. The method includes calculating a synthetic throttle setting that is used to establish clutch and brake capacity control and wherein separate ratio shift schedules are used for normal operation and for traction control operation, the engine torque required during operation in the traction control mode determining the vehicle speed at which shifts occur for each gear ratio whereby the shift schedule during operation in the traction control mode can be calibrated independently of the throttle position required for optimum clutch and brake capacity control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.