Biased speed control for an electric machine in a hybrid vehicle
US8834319B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2012 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Dec 28, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle is provided with an engine, an electric machine connected to the engine by an upstream clutch, a transmission gearbox connected to the electric machine by a downstream clutch, and a controller. The controller is configured to: (i) slip a downstream clutch, (ii) limit a torque output of an electric machine to a threshold value, (iii) engage an upstream clutch while the downstream clutch is slipping, and (iii) engage the downstream clutch. A method for controlling an electric machine in a vehicle during an upstream torque disturbance is provided. The downstream clutch is slipped and the torque output of an electric machine is limited to a threshold value. The upstream clutch is engaged while the downstream clutch is slipping. The downstream clutch is engaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.