System and method to prevent shift hunting in a powertrain
US8568271B2 · kind B2 · utility
2Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2011 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Dec 27, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H63/50
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for preventing shift hunting in a powertrain including an engine and a transmission having a variator, a first gearset, and a second gearset is disclosed. The method includes operating the engine at a first substantially constant speed, detecting a shift condition, and operating the engine at a second substantially constant speed as a function of detecting the shift condition. The second speed is different than the first speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.