Invention Grant
- Patent Title: Flow management system for hydraulic work machine
- Patent Title (中): 液压作业机流量管理系统
-
Application No.: US12867367Application Date: 2009-02-11
-
Publication No.: US08720197B2Publication Date: 2014-05-13
- Inventor: Bengt-Goran Persson , Dale Vanderlaan , Lew Kasper
- Applicant: Bengt-Goran Persson , Dale Vanderlaan , Lew Kasper
- Applicant Address: US OH Cleveland
- Assignee: Parker-Hannifin Corporation
- Current Assignee: Parker-Hannifin Corporation
- Current Assignee Address: US OH Cleveland
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- International Application: PCT/US2009/033720 WO 20090211
- International Announcement: WO2009/102740 WO 20090820
- Main IPC: F15B21/08
- IPC: F15B21/08

Abstract:
A flow management system capable of providing adjustable hydraulic fluid flow or pressure at a common line to supply bidirectional pumps in electro-hydrostatic actuation systems and conditioning re-circulated hydraulic fluid. The system enables flow sharing between multiple actuation systems and minimization of energy consumption by a power-on-demand approach and/or electrical energy regeneration while eliminating the need for an accumulator. The system has particular application to electro-hydrostatic actuation systems that typically include bi-directional electric motor driven pumps and unbalanced hydraulic actuators connected within closed circuits to provide work output against external loads and reversely recover energy from externally applied loads.
Public/Granted literature
- US20110030364A1 FLOW MANAGEMENT SYSTEM FOR HYDRAULIC WORK MACHINE Public/Granted day:2011-02-10
Information query