Title:
ハイブリッド建設機械の駆動制御装置、ハイブリッド建設機械及びその駆動制御プログラム
Document Type and Number:
Japanese Patent JP4800514
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To perform assisting operation and/or power generation operation for an engine by a motor-generator with a simple structure and accurately control the engine in a target operation state in a hybrid construction machine. SOLUTION: An engine speed Nr corresponding to optimum torque of a set speed N0 is calculated as a target speed in a controller 9. When load torque of the engine 1 is large and an engine speed N is lower than the target speed Nr , the motor-generator 6 is operated as a motor in correspondence with a deviation ΔNr so as to perform torque assistance. When the load torque of the engine 1 is small and the engine speed N is higher than the target speed Nr , the motor-generator 6 is operated as a generator in correspondence with the deviation ΔNr so as to generate electric power and accumulate the electricity in a battery 7. Thus, the engine 1 is controlled to get closer to the optimum operation state.
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Inventors:
Eiji Egawa
Masami Ochiai
Seiji Yamashita
Toru Kaenuma
Shuji Ohira
Hiroshi Kasuya
Masami Ochiai
Seiji Yamashita
Toru Kaenuma
Shuji Ohira
Hiroshi Kasuya
Application Number:
JP2001218077A
Publication Date:
October 26, 2011
Filing Date:
July 18, 2001
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E02F9/20; B60L50/16; F02D29/02; F02D29/04; F02D29/06; F02D45/00; F04B49/00; H02P9/00; H02P9/04
Domestic Patent References:
| JP4001434A | ||||
| JP10273919A | ||||
| JP2001173024A | ||||
| JP63046253B1 | ||||
| JP4148037A | ||||
| JP6080042A | ||||
| JP5928805A | ||||
| JP2001164959A | ||||
| JP2002275945A |
Attorney, Agent or Firm:
Kasuga Toshiaki