Vehicle drive train control method
US9649925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2012 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Jan 21, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A heavy road vehicle provided with a hybrid propulsion system includes a mechanical propulsion system and a hydraulic propulsion system. The mechanical propulsion system is connected to at least one traction wheel which is powered by an internal combustion engine via a mechanical drive train and a gearbox. The hydraulic propulsion system is connected to at least one other traction wheel including a hydraulic motor powered by a hydraulic pump unit. The hybrid propulsion unit further includes a control unit for at least controlling the hybrid propulsion unit, optionally also controlling the mechanical propulsion system. The hydraulic propulsion system further includes a pressure accumulator which is connected to the hydraulic motor in order to maintain a pressure in the hydraulic motor even if the hydraulic pump unit is switched off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.