Method of synchronizing engine torque with vehicle torque load for accomplishing vehicle transmission shifting
US6246941A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Mar 25, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2306/46
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of engaging and disengaging transmission gears in a vehicle is provided. An intent switch is actuated for preparing the transmission to engage or disengage the transmission gears. An engine speed synchronization (ESS) controller processes an input torque parameter representing torque from an engine and an output torque parameter representing torque at a transmission output shaft. The input torque parameter may include such inputs as friction torque while the output torque parameter may include such inputs as vehicle torque load. The input torque parameter is adjusted to approximate the output torque parameter for achieving a zero torque load between the engine and transmission output shaft to facilitate engaging and disengaging transmission gears.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.