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Title:
HYBRID TYPE WORK VEHICLE
Document Type and Number:
Japanese Patent JP2016011533
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve shock damp operation in a hybrid type work vehicle.SOLUTION: A hybrid type work vehicle comprises travel electric motors 7F and 7R driven by electric power of a generator motor 5 driven by an engine 1, hydraulic actuators 12 and 13 driven by pressure oil discharged from a variable capacity hydraulic pump 9 driven by the engine 1, an accelerator pedal for outputting a request torque command, a work operation member 31 for outputting a pump request flow rate command, an increase command member 41 for outputting an increase command for increasing the push-away volume of the variable capacity hydraulic pump 9 by a predetermined value and a control part 100 for controlling a rotating speed of the engine 1 and the push-away volume of the variable capacity hydraulic pump 9 on the basis of the pump request flow rate command when a request torque command and the pump request flow rate command are inputted during non-travel operation, and controlling the rotating speed of the engine 1 and the push-away volume of the variable capacity hydraulic pump 9 on the basis of the pump request flow rate command and the increase command when the pump request flow rate command and the increase command are inputted.

Inventors:
ISHIDA KAZUO
ITO NORITAKA
Application Number:
JP2014134091A
Publication Date:
January 21, 2016
Filing Date:
June 30, 2014
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY
International Classes:
E02F9/20; B60K6/46; B60K6/52; B60L50/15; B60W10/06; B60W10/30; B60W20/00
Domestic Patent References:
JPH07158608A1995-06-20
JPH06249208A1994-09-06
JPH05215101A1993-08-24
JP2001152921A2001-06-05
Foreign References:
WO2012099255A12012-07-26
Attorney, Agent or Firm:
Fuyuki Nagai