Title:
ENGINE CONTROL DEVICE FOR CONSTRUCTION EQUIPMENT
Document Type and Number:
Japanese Patent JP3971348
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an engine control device for construction equipment capable of reducing decline in engine revolution speed at the time of rapid increase in engine load without sacrificing operation, and of preventing deterioration of durability due to excessive increase in engine revolution speed.
SOLUTION: Pressure sensors 73, 74, position sensors 75, 76, pressure sensors 77, 78, a target speed correction value computing part 90, and a correction value adding part 70r are provided. Target revolution speed NR2 for control is computed so as to increase from target revolution speed NR1 from an input part 71 based on change in state quantity and then slowly return to the target revolution speed NR1. Based on the target revolution speed NR2 for control, target fuel injection quantity FN1 is computed, and fuel injection quantity is controlled.
Inventors:
Kazunori Nakamura
Yasushi Arai
Yoichi Kowatari
Koji Ishikawa
Hideo Karasawa
Yasushi Arai
Yoichi Kowatari
Koji Ishikawa
Hideo Karasawa
Application Number:
JP2003181582A
Publication Date:
September 05, 2007
Filing Date:
June 25, 2003
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E02F9/22; F02D41/04; F02D29/00; F02D29/04; F02D31/00; F02D41/14; F02D45/00; F15B11/00; F02D41/12; (IPC1-7): F02D41/04; E02F9/22; F02D29/00; F02D29/04; F02D41/14; F02D45/00
Domestic Patent References:
| JP4001183B2 | ||||
| JP3414159B2 | ||||
| JP2001154803A | ||||
| JP2001173605A | ||||
| JP8303283A |
Attorney, Agent or Firm:
Kasuga Toshiaki
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