Method for operating a vehicle driveline
US9803734B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2013 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jun 12, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2041
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of operating a driveline including a powersplit transmission is provided. The driveline may be operated in a hydrostatic power transmission mode and a blended hydrostatic/mechanical power transmission mode. The method comprises the steps of providing a hydrostatic circuit, detecting a rapid deceleration of the vehicle, and adjusting a threshold of at least one pressure relief valve forming a portion of the hydrostatic circuit in response to the sudden deceleration. The at least one pressure relief valve facilitates quickly changing the driveline from the blended hydrostatic/mechanical power transmission mode to the hydrostatic power transmission mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.