CONTROLLING AIR-FUEL RATIO FOR INTERNAL COMBUSTION ENGINES BASED ON REAL-TIME VOLUMETRIC EFFICIENCY DETERMINATION

摘要

Methods and systems for real-time determination of volumetric efficiency for real-time control of air-fuel ratio for an internal combustion engine are provided. Sensors including Mass Air Flow (MAF) rate, Manifold Absolute Pressure (MAP), Manifold Intake Air Temperature (IAT), and engine RPM may be used to determine an actual air mass and theoretical maximum air mass for an engine cylinder during an intake stroke. This ultimately leads to the determination of engine Volumetric Efficiency (VE) may be determined in real-time based on the measured and calculated values for air mass, may provide VE information to an engine control system for real-time control of fuel system operation.