Fuel injection control system for an automotive engine
US4957088A · kind A · utility
21Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Sep 22, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/182
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The quantity of air induced in a cylinder of an engine is estimated by using equations based on various coefficients. The coefficients are stored in a memory and derived in accordance with engine operating conditions. The estimated quantity of induced air is corrected so as to approximate quantity of air actually induced in the cylinder. A basic injection pulse width is calculated based on the corrected air quantity. The basic injection pulse width is corrected by a feedback coefficient, thereby producing a fuel injection pulse width signal for operating a fuel injector of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.