Electro-magnetic powder clutch system for automobiles
US4403683A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1980 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Oct 14, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S477/906
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system for controlling an electro-magnetic powder clutch of an internal combustion engine for a vehicle comprises a transmission, a 2nd switch adapted to be closed in the 2nd speed stage of the transmission, a thermo switch adapted to be closed at a predetermined temperature of the clutch, and a control circuit. The control circuit is so arranged that the current to the magnetizing coil of the clutch increases with an increase of the rotational speed of the engine and that when the 2nd switch and the thermal switch are closed, the current in the 2nd speed stage steeply increases so as to be impossible to start the vehicle in the 2nd speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.