Anti-stall system utilizing implement pilot relief
US7797934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2007 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Sep 2, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/85954
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic control system for a machine is disclosed. The hydraulic control system may have a source driven by an engine to pressurize fluid, and a tool actuator movable by pressurized fluid. The hydraulic control system may further have a first valve element movable to control an amount of pressurized fluid directed to the tool actuator, and an interface device movable by an operator to control an amount of pressurized fluid directed to move the first valve element. The hydraulic control system may also have a second valve element movable to limit an amount of pressurized fluid available to move the first valve element, and a controller in communication with the second valve element. The controller may be configured to move the second valve element to reduce pressurized fluid directed to the first valve element in an amount related to a load on the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.