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Title:
POWER SOURCE DEVICE FOR HYBRID WORKING MACHINE
Document Type and Number:
Japanese Patent JP2010159648
Kind Code:
A
Abstract:

To prevent overdischarge of a storage device and engine stall by changing contents of control when charged quantity drops to a set value or less.

In a hybrid working machine in which the maximum engine output is set at the average power and the maximum pump input is set to be larger than the maximum engine output in a normal state, in an abnormal state in which a level of charge of a battery 8 decreases and assistance ability of a motor function of a power machine 2 is lost, the minimum pump flow rate is reduced to a value equal to or smaller than a standby flow rate, the standby flow rate being the minimum pump flow rate used in normal state control, and a set value of the maximum pump input is changed such that the maximum pump input is smaller than the maximum engine output.

COPYRIGHT: (C)2010,JPO&INPIT


Inventors:
SORA TOSHIO
Application Number:
JP2009001004A
Publication Date:
July 22, 2010
Filing Date:
January 06, 2009
Export Citation:
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Assignee:
KOBELCO CONTSTRUCTION MACHINERY LTD
International Classes:
F04B49/06; E02F9/20; F15B11/00; F15B21/14
Domestic Patent References:
JP2007247230A2007-09-27
JPH0579502A1993-03-30
JPH04143473A1992-05-18
JP2005083242A2005-03-31
JP2003184604A2003-07-03
JP2007247230A2007-09-27
JPH0579502A1993-03-30
JPH04143473A1992-05-18
Attorney, Agent or Firm:
小谷 悦司
小谷 昌崇
村松 敏郎