HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY KIT

Title:

HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY KIT

Document Type and Number:

WIPO Patent Application WO/2013/003050

Kind Code:

A3

Abstract:

An energy recovery retrofit kit for a hydraulic control system (50) is disclosed. The energy recover retrofit kit may have at least one of a first accumulator (108) and a second accumulator (110). The energy recover retrofit kit may also have a recovery valve block (106) fluidly connectable between an existing pump (58) and an existing motor (49) of the hydraulic control system. The recovery valve block may be configured to selectively fluidly communicate at least one of the first and second accumulators with the existing motor.

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Inventors:

MA PENGFEI (US)
ZHANG JIAO (US)
SHANG TONGLIN (US)
SPRING PETER (US)
CHEN DAYAO (US)
SYED SALIK (US)
FERRAZ JOHN (US)
PETERSON RANDAL (US)

Application Number:

PCT/US2012/042354

Publication Date:

April 25, 2013

Filing Date:

June 14, 2012

Export Citation:

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Assignee:

CATERPILLAR INC (US)
MA PENGFEI (US)
ZHANG JIAO (US)
SHANG TONGLIN (US)
SPRING PETER (US)
CHEN DAYAO (US)
SYED SALIK (US)
FERRAZ JOHN (US)
PETERSON RANDAL (US)

International Classes:

F15B21/14; E02F9/22; F15B13/043; F15B15/18

Foreign References:

US7269944B2	2007-09-18
US7908852B2	2011-03-22
US6971463B2	2005-12-06
US20070199604A1	2007-08-30
US20070044647A1	2007-03-01

Attorney, Agent or Firm:

SPILLMAN, M. Daniel et al. (Peoria, IL, US)

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