Method and apparatus for providing a periodic control signal, especially for controlling the ignition of an internal combustion engine
US4066968A · kind A · utility
11Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1975 |
| Grant date | Jan 3, 1978 |
| Priority date | — |
| Expiry date | Mar 27, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A periodic control signal is produced by generating a signal P the duration of which represents the period of time required for a sector subtending the angle .phi. to be driven by a rotating shaft past a fixed point, while the complement of said signal and time period are represented by P and q respectively. During one of the periods q and q a first voltage is generated as a linear function of q, and this voltage is stored. A second voltage which is a linear function of time is generated during one of the succeeding periods q, and said control signal is generated when the second voltage becomes equal to the first.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.