Hybrid drive for a motor vehicle
US5337848A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1992 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Dec 22, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/909
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a hybrid drive for a motor vehicle, a three-phase machine fed by a three-phase converter is coupled via the layshaft of the gearbox to a conventional internal-combustion engine drive train. Both the internal combustion engine and the three-phase machine can be of conventional design. In addition to the known operating modes of a hybrid drive, the three-phase machine serves as a synchronization aid for the gear change in that the layshaft is accelerated in a suitable manner during the shifting operation. As a result, the mechanical synchronization devices in the gearbox have virtually no friction work to perform and can be of correspondingly smaller dimensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.