Control device and control method for automatic transmission
US7670262B2 · kind B2 · utility
4Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2008 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Aug 21, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/405
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
“Threshold A is substituted in a power-on state, “threshold B”, which is lower than “threshold A”, is substituted in a power-off state, and “threshold C”, which is lower than “threshold B” is substituted during a brake operation, as a rapid deceleration determination threshold. The rotational speed of an output shaft of an automatic transmission and the rapid deceleration determination threshold are compared to determine whether a vehicle is rapidly decelerating. The engagement state of a lock-up clutch is controlled based on whether the vehicle is rapidly decelerating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.