Title:
HYBRID-TYPE WORKING MACHINE
Document Type and Number:
WIPO Patent Application WO/2017/110157
Kind Code:
A1
Abstract:
Provided is a hybrid-type working machine capable of suppressing excessive restrictions on pump absorption power even in conditions in which power supply to an electric motor is restricted. The hybrid-type working machine comprises: an engine 22; an assist power generation motor 23 that is connected to the engine 22 so as to enable torque transmission; a power storage device 24 that supplies power to the assist power generation motor 23; a monitoring device 28 that monitors the power storage device 24 and obtains power storage device information; a hydraulic pump 41 that is driven by the engine 22 and the assist power generation motor 23; and a pump regulator 43 that adjusts a discharge flow rate of the hydraulic pump 41. The hybrid-type working machine is provided with: an increase rate calculation device 81 that calculates a permissible increase rate r for the pump absorption power in accordance with the power storage device information; a restricted power calculation device 82 that calculates a restriction value WPlim of the pump absorption power on the basis of the permissible increase rate r; and a pump control device 86 that controls the discharge flow rate of the hydraulic pump 41 in accordance with the restricted pump power WPlim.
Inventors:
AMANO HIROAKI (JP)
IMURA SHINYA (JP)
YAMASHITA RYOUHEI (JP)
ISHIHARA SHINJI (JP)
NISHIKAWA SHINJI (JP)
HITA MASAFUMI (JP)
IMURA SHINYA (JP)
YAMASHITA RYOUHEI (JP)
ISHIHARA SHINJI (JP)
NISHIKAWA SHINJI (JP)
HITA MASAFUMI (JP)
Application Number:
PCT/JP2016/075909
Publication Date:
June 29, 2017
Filing Date:
September 02, 2016
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
E02F9/20; B60K6/36; B60K6/48; B60L50/16; B60W10/26; F04B49/06; F04B49/12
Foreign References:
| JP2013056647A | 2013-03-28 | |||
| JP2012233312A | 2012-11-29 | |||
| JP2011002085A | 2011-01-06 | |||
| JP2010159648A | 2010-07-22 | |||
| JP3941951B2 | 2007-07-11 | |||
| JP3941951B2 | 2007-07-11 | |||
| JP4633813B2 | 2011-02-23 |
Other References:
See also references of EP 3396074A4
Attorney, Agent or Firm:
KAICHI IP (JP)
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