Direct injection type diesel engine air loop controlling method for vehicle, involves adjusting fuel flow set point based on variance between fuel flow and set point to obtain corrected set point with another set point for valve controlling

摘要

The method involves determining an air flow through volumetric efficiency of a direct injection type diesel engine, and estimating fuel flow (Qinj) according to the air flow and preciousness (Ri mes), where the fuel is injected into the engine. A variance between the fuel flow and a fuel flow set point (Ri cons) is calculated, and the fuel flow set point is adjusted according to the variance for obtaining a corrected fluid flow set point defining a preciousness set point for controlling a recycled exhaust gas valve.