Constant spark energy, inductive discharge ignition system
US4829973A · kind A · utility
5Cited by
13References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Dec 15, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P3/0453
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A constant energy ignition system is disclosed. A first programmable one shot multivibrator controls the dwell of an energy storage device and the firing time to produce an ignition pulse from the stored energy. A second programmable one shot multivibrator, having a duty cycle inversely proportional to the power supply voltage provides the time base for the dwell. A control signal, proportional to the difference of the integrals of the outputs of the first and second one shot multivibrators controls the duty cycle of the first programmable one shot multivibrator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.