Fuel control system including adaptive injected fuel quantity estimation
US6557530B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2000 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | May 4, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel control system for an internal combustion engine including injected fuel quantity estimation includes a fuel pump responsive to a fuel pump command to supply fuel to a fuel collection unit. A pressure sensor is provided for producing a pressure signal indicative of the pressure of fuel within the collection unit throughout a fuel injection event, and an engine position sensor is provided for producing an engine position signal indicative of a crank angle of the engine relative to a reference crank angle. A control circuit includes means responsive to the pressure signal and a desired fueling value for producing an initial fueling command, and further includes a fuel quantity estimation block responsive to the pressure signal, the engine position signal and a final fueling command to produce a fuel quantity estimation value. The final fueling command is computed by the control circuit as a function of the initial fueling command and the fuel quantity adjustment value to which the injector is responsive to supply fuel to the combustion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.