Speed change control apparatus for work vehicle
US10363927B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2016 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | Nov 16, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2300/423
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A speed change control apparatus for a work vehicle includes a hydraulic continuously variable speed transmission that performs speed change on power input from an engine by changing a trunnion shaft angle based on a depressing amount of a speed change pedal and outputs the power, a pedal position detector that detects a pedal position responsive to the depressing amount of the speed change pedal, and a control unit that controls a number of revolutions of the engine and the trunnion shaft angle of the hydraulic continuously variable speed transmission based on a detection value of the pedal position detector. The control unit performs control so that the trunnion shaft angle is maximized at a second pedal position set to a position shallower than a first pedal position at which the number of revolutions of the engine is maximized by a depressing operation of the speed change pedal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.