Title:
液圧システムおよびその種の液圧システムを包含する作業機械
Document Type and Number:
Japanese Patent JP2012528288
Kind Code:
A
Abstract:
A hydraulic system for a working machine includes at least one work function and a control valve unit for controlling hydraulic fluid to and from the work function, and a recovery unit connected to a return port of the control valve unit for recovering energy from the work function. The system further includes an arrangement for limiting the pressure of the hydraulic fluid at the return port, which pressure limiting arrangement has a pilot-operated valve adapted to set a maximum allowable pressure at the return port of the control valve unit. The pressure is variable by controlling the pilot-operated valve by a control unit.
Inventors:
Vigorm, Bo
Eclair, Andreas
Haybreak, kim
Eclair, Andreas
Haybreak, kim
Application Number:
JP2012512999A
Publication Date:
November 12, 2012
Filing Date:
May 29, 2009
Export Citation:
Assignee:
Volvo Construction Equipment Arbor
International Classes:
F15B21/14; E02F9/20; E02F9/22
Domestic Patent References:
| JP2008275101A | 2008-11-13 | |||
| JP2007263160A | 2007-10-11 | |||
| JP2004324742A | 2004-11-18 | |||
| JP2004138187A | 2004-05-13 | |||
| JP2007040393A | 2007-02-15 | |||
| JP2007315514A | 2007-12-06 |
Attorney, Agent or Firm:
Kazuo Shigenobu
Hideo Shimizu
Yuichi Takagi
Ryoichi Mizobuchi
Masayuki Ogura
Hideki Akiba
Taeko Katata
Hideo Shimizu
Yuichi Takagi
Ryoichi Mizobuchi
Masayuki Ogura
Hideki Akiba
Taeko Katata