Ignition systems for internal combustion system
US4254748A · kind A · utility
1Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1978 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Nov 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A digital electronic ignition system employing two triggers for generating first and second voltage signals in response to engine revolutions. A first counter counts the number of second signal pulses during a predetermined interval of time from a given point in relation to the engine crank-shaft position. A memory which is operative from the first counter, includes a program or the desired advance of retard of the ignition timing, and operates a second counter to count said second signal pulses up to the number stored in the memory in order to initiate engine ignition at the optimum crank-shaft position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.