Title:
DRIVE CONTROLLER OF HYBRID WORKING MACHINE
Document Type and Number:
Japanese Patent JP3941951
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a drive controller of a hybrid working machine which can prevent the residual battery power from abruptly dropping and which can not only prevent an engine from stalling due to an insufficient residual battery power but also assure a desired operating performance of a hydraulic actuator.
SOLUTION: The drive controller of the hybrid working machine includes a motor-generator control means (21, 38) which limits a power torque value calculated by referring to a real rotational speed of an engine 16 in response to the electrical storage residual quantity based on a data table of the power torque output value of the motor-generator 20 set in response to the operating state decided based on predetermined operating states of hydraulic actuators 2b, 3, 5 and outputs the limited power torque value to the motor-generator 20, and a pump absorption torque controller 30 which controls the maximum value of an input torque to a hydraulic pump 17 so as to hold the output of the hydraulic pump 17 substantially constant.
Inventors:
Oshishitoshi
Masahiko Hoshitani
Naruse Maki
Masahiko Hoshitani
Naruse Maki
Application Number:
JP2003315359A
Publication Date:
July 11, 2007
Filing Date:
September 08, 2003
Export Citation:
Assignee:
KOMATSU LTD.
International Classes:
E02F9/20; F02D29/02; B60K6/485; B60K6/543; B60L50/16; B60W10/04; B60W10/06; B60W10/08; B60W10/10; B60W10/103; B60W10/105; B60W10/26; B60W20/00; F02D29/00; (IPC1-7): F02D29/02; B60K6/04; B60K41/00; B60K41/16; B60L11/14; E02F9/20; F02D29/00
Domestic Patent References:
| JP2003028071A | ||||
| JP2002359935A |
Attorney, Agent or Firm:
Tsutomu Inoue
Previous Patent: WASTE OIL COLLECTING CONTAINER
Next Patent: STRUCTURE OF BUSH CUTTER, FOR PREVENTING CUT MATERIAL FROM SPLASHING
Next Patent: STRUCTURE OF BUSH CUTTER, FOR PREVENTING CUT MATERIAL FROM SPLASHING