Hybrid-type construction machine having an output condition calculating unit to calculate output conditions of an engine and an electric storage device
US8285434B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 26, 2008 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | May 30, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/48
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In the hybrid-type construction machine, the control unit (60) includes a drive distributing unit (60-8) and an output condition calculating unit (60-9). The output condition calculating unit (60-9) calculates output conditions inclusive of an output setting of the electric storage device determined from a state of charge of the electric storage device (58), an output setting of the engine determined from a number of revolutions of the engine (50), a hydraulic load required value indicative of drive power required by the oil pressure generating unit, and an electric load required value indicative of electric power required by the electric drive unit. The drive distributing unit (60-8) determines output values of the electric drive unit and the hydraulic drive unit based on the calculated output conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.