Method of regulation of the richness of a mixture of air - fuel supply of an internal combustion engine, of the type of a closed loop, without the use of physical measurement of the richness

摘要

The method consists in determining the injection time ti for controlling the opening of a fuel injector, by adding to a static component values of this time, a dynamic correction deltatidn sampled, the measurement is given by a linear combination of at least one of the values deltatidn - k dynamic corrections made to the sampling instants immediately, and of the differences in - k of richness estimated with respect to a set mixture strength rc, measured at the current time and at least one sampling instant immediately. / p & & p & application to the richness regulation of a mixture of air - fuel in the case of failure of an oxygen probe placed in the exhaust gases of the engine.