Controlling gearshifting to prevent powertrain hunting
US8855877B2 · kind B2 · utility
1Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2011 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Dec 27, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0216
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for controlling gearshifts of an automatic transmission includes preventing an upshift while the vehicle accelerates on an ascending grade, if predicted vehicle acceleration in a target gear is less than a reference vehicle acceleration in the target gear; accelerating the vehicle on the grade; and producing the upshift, if predicted vehicle acceleration in the target gear is greater than a reference vehicle acceleration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.