Adaptive transmission pressure control with run-through detection
US5163342A · kind A · utility
15Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1992 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Apr 3, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0087
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved adaptive line pressure control which detects the occurrence of run-through and overrides the normal adaptive pressure control in response to a detected run-through condition so that the line pressure during subsequent shifting is increased instead of decreased. A run-through condition is detected by measuring and comparing first and second time indications corresponding, respectively, to the interval of ratio change during the shift (shift time), and the interval between the generation of a shift command and the actual initiation of ratio change (delay time).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.