Driving circuit for a capacitor discharge ignition system
US4967037A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Jul 14, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P3/0884
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A capacitor-discharge ignition system discharges a load capacitor to drive an ignition coil for producing an ignition spark. The ignition system includes an oscillator generating complimentary pulse trains that activate a pair of power FETs to drive a transformer. The transformer generates an output voltage that is doubled in magnitude and stored in the load capacitor until the load capacitor is triggered by a trigger circuit to provide an ignition spark. A signal generated by a feedback circuit in response to the occurrence of an ignition spark is employed to inhibit further discharge of the load capacitor as well as to deactivate the transformer. An auxiliary D.C.-to-D.C. converter driven by the oscillator provides a supply voltage for the components of the ignition system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.