Working vehicle and method for controlling a working vehicle
US8607919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2012 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | May 9, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/6861
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An upper limit speed control part controls the lower limit of motor displacement in conformance with the target upper limit speed via a motor displacement control part when the target upper limit speed is within the normal speed range. The upper limit speed control part controls the upper limit of pilot pressure via a pilot pressure control part in conformance with the target upper limit speed when the target upper limit speed is within the low speed range. Further, when the target upper limit speed is within the low speed range, the upper limit speed control part controls a pilot pressure valve such that the upper limit of pilot pressure increases as drive circuit pressure increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.