Ignition system for internal combustion engines
US4892073A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1988 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Sep 7, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P3/0552
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An ignition system for internal combustion engines comprises means for generating an ignition signal in synchronism with the revolution of an internal combustion engine and an ignition circuit device for interrupting a primary current of an ignition coil in accordance with the ignition signal. The ignition circuit device includes an ignition monitor signal producing circuit for producing an ignition monitor signal which circuit operates to set the ignition monitor signal at the time of starting the energization of the ignition coil and thereafter to reset the ignition monitor signal at a subsequent predetermined timing, whereby the ignition circuit device operates, in accordance with the pulse width and the set and reset conditions of the ignition monitor signal, to decide whether the operation of the ignition circuit device is normal or abnormal, to control to generate a predetermined amount of ignition energy, and to prevent erroneous generation the ignition monitor signal due to a noise or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.