the pressure (p ~ fuel ~) in the fuel manifold (11), estimating ((53, 55, 56, 57, 58, 59, 60) the average pressure (p ~ cammean ~) which will be present in the chamber (4 ) during injection (inj) based on the estimates made in the previous steps and based on the representative function (f) of the pressure stroke in the combustion chamber (4) under reference engine operating conditions, estimating (61) the average capacity (g) of the injector (12) during injection (inj) based on the pressure difference (30 p ~ 2 ~) defined by the pressure (p ~ fuel ~) detected in the fuel manifold (11) and the average pressure (p ~ cammean ~) estimated in the chamber (4), and calculating and programming (61) a shipping interval (30 t ~ injprog ~) for the injector (12) based on the estimated average capacity (g) and the amount of fuel (qb ~ inj ~) to be injected.

摘要

B DIRECT FUEL INJECTION CONTROL METHOD IN AN INTERNAL COMBUSTION ENGINE COMBUSTION CHAMBER D, according to which, in order to perform the injection (INJ) in relation to a first stage (C) of the cylinder starting from a neutral point (PM ~ N ~), where the following steps are done: estimating (51) during the phase (A) of the cylinder preceding the first phase (C), the pressure (P ~ COII ~ (PM ~ N ~)) which will be present in the suction manifold (5) in a first neutral position (PM ~ N ~), estimating (52) the advance of the injection (sym ~ INJ ~) for the injection (INJ) based on the pressure estimate (P ~ COII ~ (PM ~ N ~)) in the suction manifold (5), detecting