Title:
METHOD FOR CONTROLLING PUMP OF WORKING MACHINE
Document Type and Number:
WIPO Patent Application WO/2008/010536
Kind Code:
A1
Abstract:
A technique for utilizing the advantages of both load sensing control and a regeneration
circuit without causing any problem. The regeneration circuit is added to a hydraulic
circuit equipped with a hydraulic pressure signal line for detecting the value
of hydraulic pressure in the hydraulic circuit and controlling the amount of
pressurized oil to a cylinder (1) with the detected value as the standard. A pressure
reducing valve (6) for outputting a reduced pressure as an operation signal to
a pump (2) is provided. When the regeneration circuit is in a regeneration state,
control means (5) causes the pressure reducing valve (6) to output a pressure
reduction command to the pump (2) to reduce the amount of discharge from the pump
(2).
Inventors:
SHIMADA, Yoshiyuki (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
嶋田 佳幸 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
YOSHINO, Tetsuya (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
芳野 鉄也 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
MIKI, Nobuhiro (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
三木 信裕 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
嶋田 佳幸 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
YOSHINO, Tetsuya (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
芳野 鉄也 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
MIKI, Nobuhiro (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
三木 信裕 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
Application Number:
JP2007/064218
Publication Date:
January 24, 2008
Filing Date:
July 19, 2007
Export Citation:
Assignee:
SHIN CATERPILLAR MITSUBISHI LTD. (10-1, Yoga 4-chome Setagaya-k, Tokyo 97, 1580097, JP)
新キャタピラー三菱株式会社 (〒97 東京都世田谷区用賀４丁目１０番１号 Tokyo, 1580097, JP)
SHIMADA, Yoshiyuki (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
嶋田 佳幸 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
YOSHINO, Tetsuya (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
芳野 鉄也 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
MIKI, Nobuhiro (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
新キャタピラー三菱株式会社 (〒97 東京都世田谷区用賀４丁目１０番１号 Tokyo, 1580097, JP)
SHIMADA, Yoshiyuki (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
嶋田 佳幸 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
YOSHINO, Tetsuya (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
芳野 鉄也 (〒97 東京都世田谷区用賀４丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1580097, JP)
MIKI, Nobuhiro (10-1 Yoga 4-chome, Setagaya-k, Tokyo 97, 1580097, JP)
International Classes:
F15B11/00; E02F9/22; F15B11/024; F15B11/00; E02F9/22
Attorney, Agent or Firm:
YOSHIHARA, Shozo et al. (SAEGUSA HONKAN, 5-12Ginza 3-Chome, Chuo-ku, Tokyo 61, 1040061, JP)
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