Electro-magnetic clutch control system for automobiles
US4480732A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1981 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Sep 11, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/7109
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A system for controlling an electro-magnetic clutch of an internal combustion engine mounted on a vehicle, which has a drive member secured to a crankshaft of the internal combustion engine, magnetizing coil provided in the drive member, a driven member adjacent to the drive member, and a transmission secured to the driven member having multi-stage change gears. A car speed sensor is provided for producing an output signal when the speed of the vehicle exceeds a predetermined speed and a transmission sensor is provided for producing an output signal when a change gear having a small reduction ratio, such as 3rd- or 4th-gear, is selected. A pulse generator is provided for producing an output signal in proportion to the ignition pulse of the engine and an electric circuit is provided for controlling the current passing through the magnetizing coil in dependency on the output signal of the pulse generator. Output signals from the car speed sensor and the transmission sensors are applied to a gate circuit to correct the current passing through the magnetizing coil. The gate circuit is so arranged that, upon receiving the output signals, the current is decreased to provide a small clutc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.