Hybrid automobile
US4165795A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1978 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Feb 17, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/918
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A parallel hybrid drive system for self propelled vehicles including a direct current motor-generator having a drive shaft in common with an internal combustion engine leading to a variable speed transmission and a final drive train. The motor-generator has a no-load speed, established by a separate field exciter, below which it drives the shaft as a motor and above which it is driven by the shaft as a generator. Storage batteries are operatively connected to the motor-generator to supply power to it below the no-load speed. The internal combustion engine operates over a small RPM range around its most efficient speed at a power level established by a fixed throttle setting. The transmission is operatively connected to an accelerator and direction selector switch to vary the speed and direction of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.