Electronic fuel injection control
US4134367A · kind A · utility
6Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1977 |
| Grant date | Jan 16, 1979 |
| Priority date | — |
| Expiry date | May 26, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Engine fuel injector control circuitry comprising a pulse generator that duces long duration pulses. NOR gate circuitry is actuated by each pulse to operate a ramp generator. The ramp generator output changes at a rate determined by current flow generated by an engine speed sensor. Ramp generator output is applied to an input terminal of a comparator to produce rapid switching of the comparator output for starting the injection of fuel into an engine cylinder. Injection is terminated by the trailing end of the long duration pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.