Opto-electronic ignition systems for internal combustion engines
US4122814A · kind A · utility
10Cited by
4References
11Claims
0Family size
Inventor
Key dates
| Filing date | Aug 1, 1977 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Aug 1, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P3/0552
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An opto-electronic ignition system for an internal combustion engine in which radiation falls on to and is cut off from a photo-transistor in timed sequence with the engine, and in which between the photo-transistor and the primary winding of the ignition coil there is a plurality of switching Darlington pairs, each Darlington switching in inverse relation to its neighbor, and the first Darlington switching in inverse relation with the photo-transistor. The circuit is designed so that it will reliably operate in engine compartment temperatures above 125.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.