Ignition system for internal combustion engines
US4735187A · kind A · utility
6Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1987 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | Mar 2, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P17/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an ignition system for an internal combustion engine, on-off signals each responsive to one of a plurality of ignition signals from an engine control unit to switch on and off the primary current in an ignition coil are detected. A first trigger signal is produced from the logical sum of the detection signals and a second trigger signal is produced from the logical sum of the plurality of ignition signals from the engine control unit. A single nonretriggerable monostable multivibrator receives the first and second trigger signals to generate an engine ignition monitor signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.