Title:
HYBRID TYPE WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2015/098545
Kind Code:
A1
Abstract:
A hybrid type work vehicle is provided with: a running electric motor; an electricity storage device that is charged with regenerative electric power generated by the running electric motor and that supplies driving electric power to the running electric motor; an electric generator/motor that generates electric power by being driven by an engine in electric power generation mode and that is driven with the regenerative electric power in powering mode; a hydraulic pump mechanically connected to and driven by the electric generator/motor and the engine; a speed level setting device that sets any of a plurality of speed levels; and a control device that drivingly controls the running electric motor and the electric generator/motor. The control device includes a drive control unit that implements regenerative control by computing a greater regenerative braking force as the speed level that is set becomes lower, on the basis of drive torque characteristics with respect to a rotating speed set for each speed level, and regenerative braking force characteristics with respect to a vehicle speed set for each speed level.
Inventors:
UTASHIRO HIROSHI (JP)
ITOU NORITAKA (JP)
MORIKI HIDEKAZU (JP)
ITOU NORITAKA (JP)
MORIKI HIDEKAZU (JP)
Application Number:
PCT/JP2014/082846
Publication Date:
July 02, 2015
Filing Date:
December 11, 2014
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY (JP)
International Classes:
B60W10/08; B60K6/46; B60K6/52; B60L7/12; B60L50/15; B60W10/18; B60W20/00; E02F9/20
Domestic Patent References:
| WO2012099255A1 | 2012-07-26 |
Foreign References:
| JP2010173389A | 2010-08-12 | |||
| JP2009143478A | 2009-07-02 | |||
| JP2011245948A | 2011-12-08 |
Attorney, Agent or Firm:
NAGAI, Fuyuki et al. (JP)
Fuyuki Nagai (JP)
Fuyuki Nagai (JP)
Download PDF: