Fuel injection apparatus for internal combustion engines
US4143622A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1976 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Nov 17, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/2477
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection apparatus for internal combustion engines, having a digital control apparatus for producing an actuating electrical signal for the engine injection valves proportional to the engine speed and the quantity of air aspirated by the engine, and a signal correction apparatus for modulating the injection actuating pulse in accordance with other parameters of the engine, such as fuel enrichment during starting or warmup of the engine, adjustment for idle, partial load, and full load conditions, and adjustment for the air-fuel ratio for both short time variable conditions, and long time variations such as variations in barometric pressure. This correction apparatus includes auxiliary storage register, interconnected to numerical frequency converters, which produce the correction signal from the information stored in the auxiliary storage registers. PAC CROSS REFERENCE TO RELATED APPLICATIONS U.S. Application of Rolf Daumer et al, Ser. No. 742,715, filed Nov. 17, 1976.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.