Forklift engine control device
US8447477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2011 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Sep 13, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D29/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A control device of a forklift engine that secures operability by keeping down fuel consumption when the accelerator pedal is floored in an unloaded or lightly loaded state, and once a heavy cargo is loaded, by lifting the cargo at a maximum lifting speed and traveling with maximum travel performance without acceleration problems. At least two maximum torque curves of different magnitudes are set in advance on a torque curve diagram. Then, the weight the cargo loaded on an attachment is measured. A threshold value for selecting at least two maximum torque curves is determined. If the measured weight is less than the threshold value, the maximum torque curve with a smaller maximum torque value is selected. If the measured weight is not less than the threshold value, the maximum torque curve with a larger maximum torque value is selected. The engine is controlled using the selected maximum torque curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.