Electro-magnetic clutch control system for automobiles
US4401199A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Mar 13, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/7105
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A system for controlling an electromagnetic clutch of an internal combustion engine mounted on a vehicle, in accordance with the engine speed and vehicle speed. The electro-magnetic clutch has a drive member secured to a crankshaft of the internal combustion engine, a magnetizing coil provided in the drive member, and a driven member adjacent said drive member. A shift lever switch produces a signal during the operation of a shift lever for the transmission. A speed sensor detects the speed of said vehicle producing a signal when the speed exceeds a predetermined value, and a clutch hold switch produces a signal when the speed of the engine exceeds a predetermined value. Both signals are fed to a control circuit. The control circuit maintains current through the magnetizing coil when the speed sensor and the clutch hold switch produce respective output signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.