Shift control apparatus for automatic transmission
US7470212B2 · kind B2 · utility
13Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2005 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Sep 27, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0496
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An engine output controller includes a delay timer which measures the period of time elapsed from a timing of a target hydraulic pressure of a release side hydraulic pressure, and control starts a predetermined period of time after a predetermined amount of torque increase is achieved. The engine output control stores maps of the predetermined periods of time and the amounts of torque increase corresponding to normal shifts, such as 3rd to 2nd and 4th to 3rd, and skip-shifts, such as 4th to 2nd, and selects the map corresponding to the type of downshift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.