Title:
CONTROL CIRCUIT FOR ENERGY REGENERATION AND WORKING MACHINE
Document Type and Number:
WIPO Patent Application WO/2012/002439
Kind Code:
A1
Abstract:
Provided is a control circuit for energy regeneration intended to conserve space and reduce cost in an energy recovery system. A control circuit (40) for energy regeneration is provided with an output port (38) for a main control valve (33), and a regeneration control valve block (20) for boom energy regeneration. The regeneration control valve block (20) is disposed between the juxtaposed first cylinder (17c1) and second cylinder (17c2) of a boom, and has a plurality of valves built into the interior of a block body (42), including a main spool (43) that consolidates a plurality of control characteristics related to energy regeneration. The regeneration control valve block (20) functions in a manner such that the potential energy in the raised boom is captured from the first cylinder (17c1) of the boom and stored in an accumulator (41) when the boom is lowered, and when the boom is raised the pressurized oil in the accumulator (41) is discharged directly to the first cylinder (17c1) and second cylinder (17c2) of the boom.
More Like This:
| WO/1998/049450 | DRIVE SYSTEM FOR HYDRAULIC MOTORS |
| WO/1997/033093 | SINGLE ACTING PNEUMATIC PISTON-CYLINDER UNIT |
| WO/2012/035964 | HYDRAULIC ENERGY REGENERATION DEVICE |
Inventors:
YOSHINO Tetsuya (C/O CATERPILLAR JAPAN LTD, 10-1 Yoga 4-chome, Setagaya-k, Tokyo 30, 〒1588530, JP)
Application Number:
JP2011/064920
Publication Date:
January 05, 2012
Filing Date:
June 29, 2011
Export Citation:
Assignee:
CATERPILLAR SARL (76 Route de Frontenex, Geneva, 1208, 1208, CH)
キャタピラー エス エー アール エル (1208 ジュネーブ ルート ドゥ フロンテネックス ７６ Geneva, 1208, CH)
キャタピラー エス エー アール エル (1208 ジュネーブ ルート ドゥ フロンテネックス ７６ Geneva, 1208, CH)
International Classes:
F15B21/14; E02F9/22; F15B11/00
Attorney, Agent or Firm:
KABASAWA Joo et al. (NSO BLDG, 1-22 Shinjuku 3-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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Claims: