Method for moving off a hybrid vehicle
US9475485B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2013 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Oct 31, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/93
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for moving off of a hybrid vehicle with a propulsion system (1) including a planetary gear with three components: a sun gear (10), a ring gear (11) and a planet wheel carrier (12). The output shaft (2a) of a combustion engine (2) is connected to a first component of an input shaft (3a) of a gearbox (3) is connected to a second component and the rotor (9b) of an electric machine (9) is connected to a third component. The propulsion system has a locking device transferable between a locking position and a releasing position respectively, in which the components rotate as a unit and with different rotation speeds respectively. The method starts from an initial state with the combustion engine idle, the locking device in the releasing position and a gear, appropriate for moving off, engaged in the gearbox. The electric machine is controlled to apply a positive torque on the third component of the planetary gear, and the rotation speed of the combustion engine is controlled towards a constant rotation speed. A reaction torque is created and gives rise to a demanded driving torque, whereby the vehicle moves off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.