Fluid-working machine valve timing
US9797393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2015 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Aug 11, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49236
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid-working machine has a working chamber of cyclically varying volume, high and low pressure manifolds, and high and low pressure valves for regulating the flow of fluid between the working chamber and the high and low pressure manifolds respectively. A controller actively controls at least one said valve to determine the net displacement of working fluid of the working chamber on a cycle by cycle basis. At least one said valve is a variable timing valve and the controller causes the valve to open or close at a time determined taking into account one or more properties of the performance of the fluid working machine measured during an earlier cycle of working chamber volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.