Gear shifting control device for work machine
US7912616B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2006 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Dec 19, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2342/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A work machine gear shifting control device is capable of readily identifying the cause of failure in learning the clutch hydraulic pressure for operating a transmission clutch. A transmission gear shifting control section 46 is provided for each of clutches 61-65, and performs a learning process in which each of a plurality of handling processes learns the clutch hydraulic pressure for each of the clutches 61-65 and determines the clutch hydraulic pressure characteristic values for operating the individual clutches. Further, the transmission gear shifting control section 46 performs a learning monitoring process in each of the plurality of handling processes to formulate an error judgment, which indicates whether learning has failed in each of the plurality of subprocesses, and displays the result of the judgment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.