System for controlling engine braking in a vehicle driveline
US6553306B2 · kind B2 · utility
4Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2001 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | May 27, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2306/48
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Engine braking in a vehicle driveline during transmission upshifts is controlled to provide more efficient and accurate speed synchronization. The physical limitations on the engine brake components are taken into account to determine a delay between an off request and the actual time that the engine brake turns off. This delay is factored into the time when the engine brake off request is made prior to a predicted time when the actual engine speed will meet a desired engine speed. By accounting for such delay, overshoot and undershoot during speed synchronization is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.