Fuel injection control apparatus and method for variably operated engine valve equipped internal combustion
US6494185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2002 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Jan 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In fuel injection control apparatus and method for an engine having a variably operated engine valve in which at least a closure timing of an intake valve is variably controlled, a controller determines whether an actual closure timing of the intake valve is in a steady state, calculates a volume of a cylinder calculated from a target control value of the closure timing of the intake valve when determining that the actual closure timing is in the steady state and a fresh-air rate within the cylinder, calculates a mass air quantity sucked into the cylinder on the basis of a mass air quantity within an intake manifold calculated by income and outgo calculations of inflow and outflow quantities of a mass air within the intake manifold and a volume of the manifold, and calculates a fuel injection quantity on the basis of the mass air quantity sucked into the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.