Hydromechanical transmission and control method
US12258021B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2023 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Jun 22, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/6861
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and systems for controlling a hydromechanical transmission are proposed. In one example, a control method for a hydrostatic unit of a hydromechanical variable transmission (HVT) is presented, comprising controlling the hydrostatic unit via a feedforward control architecture including a non-linear, multi-coefficient model, wherein the hydrostatic unit comprises a hydrostatic pump and a hydrostatic motor and a desired differential pressure of the hydrostatic unit or a desired hydraulic pump displacement may be used as inputs for the model, where the model's output is a pressure difference for a pump control piston coupled to a swash plate of the hydrostatic unit. Use of the non-linear model permits the hydrostatic unit to be controlled based on load, speed, and/or torque, thereby increasing the adaptability of the control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.