Invention Grant
- Patent Title: Hybrid construction machine
- Patent Title (中): 混合式施工机
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Application No.: US13640378Application Date: 2011-05-16
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Publication No.: US09290908B2Publication Date: 2016-03-22
- Inventor: Takenori Hiroki , Manabu Edamura , Toshihiko Ishida , Manabu Sugiura , Hidetoshi Satake , Kouji Ishikawa , Takatoshi Ooki , Shinji Nishikawa
- Applicant: Takenori Hiroki , Manabu Edamura , Toshihiko Ishida , Manabu Sugiura , Hidetoshi Satake , Kouji Ishikawa , Takatoshi Ooki , Shinji Nishikawa
- Applicant Address: JP Tokyo
- Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
- Current Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, PC
- Priority: JP2010-117025 20100521
- International Application: PCT/JP2011/061247 WO 20110516
- International Announcement: WO2011/145585 WO 20111124
- Main IPC: E02F9/20
- IPC: E02F9/20 ; E02F9/12 ; E02F9/22

Abstract:
A hybrid construction machine is capable of performing satisfactory operations even when trouble occurs that disables the electric motor from outputting torque. The hybrid construction has both a hydraulic motor and an electric motor driving the swing structure and a controller for switching between a hydraulic/electric hybrid swing mode (using both the hydraulic motor and the electric motor) and a hydraulic-alone swing mode (using only the hydraulic motor). The switching is executed while achieving satisfactory operability and performance in each mode. Normally, an energy saving operation is performed in the hydraulic/electric hybrid swing mode. When the electric amount of an electricity storage device has gone out of a prescribed range or an abnormality has occurred in an electric system (e.g., failure of an inverter), the swing mode is switched to the hydraulic-alone swing mode so that driving with normal braking torque is possible by the hydraulic motor alone.
Public/Granted literature
- US20130058750A1 HYBRID CONSTRUCTION MACHINE Public/Granted day:2013-03-07
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