Control apparatus and control method of an automatic transmission
US7462130B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2006 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | May 30, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/168
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control apparatus and control method of an automatic transmission that establishes a plurality of speeds of different speed ratios by selectively engaging and/or releasing a plurality of engagement devices, detects abnormal engagement of at least one of the engagement devices which causes tie-up to occur in the automatic transmission; establishes a predetermined specific speed set in advance in order to prevent tie-up from occurring in the automatic transmission, when abnormal engagement of the at least one of the engagement devices is detected; and places the automatic transmission in a neutral state when an engine speed will exceed a predetermined allowable speed if the predetermined specific speed is established.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.