Hydraulic regeneration apparatus
US9028354B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2013 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Nov 21, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19056
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic motor/pump regenerator system for recovering energy from the moving vehicle having high efficiency and precise control, thereby allowing the maximum amount of energy to be recovered and reused, is described. Three, fixed-displacement pump/motors are used to enable the system to recover and reapply energy at efficiencies expected to be above 70% in most circumstances. The invention is not limited to the use of three fixed displacement hydraulic units since using more units may in some drive cycles further improve efficiency. By selecting an appropriate combination of pump/motor units for providing the driveshaft torque required by the driver, embodiments of the present invention generate high recovery efficiency at any speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.