Electro-magnetic clutch control system for automobiles
US4494639A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1981 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | May 19, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/70418
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A system for controlling an electro-magnetic clutch of an internal combustion engine mounted on a car which is capable of controlling the clutch current after the gear-changing for providing the partial engagement of the clutch. The electro-magnetic clutch has a drive member secured to a crankshaft of the internal combustion engine, a driven member adjacent the drive member, which is coupled to a transmission of the car and a magnetizing coil provided in one of the members. A shift lever signal is provided during the operation of the shift lever of the transmission and an acceleration signal is provided according to the operation of the accelerator pedal of the car. A control circuit comprises a charging circuit operated by the shift lever signal, a standard voltage circuit responsive to the acceleration signal, and a comparator connected to the charging circuit and standard voltage circuit for producing an output signal for a period of time which is decided by the level of the acceleration signal. A gate circuit is operated by the output signal of the comparator for controlling the clutch current passing through the magnetizing coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.