AN ECM TO DETERMINE AIR-FUEL RATIO OF AN ENGINE

摘要

The various embodiments herein provide an Electronic Control Module (ECM) 102 to determine Air-Fuel (A/F) ratio of an engine 112. The ECM 102 is adapted to receive signals relating to engine operating parameters comprising at least one exhaust tem¬ perature, an engine speed, an engine load, an ignition angle and a relative fuel mass. The ECM 102 then accesses a global model, at least one weighing function and at least one data map from a memory element to determine the A/F ratio. The global model comprises at least two local models. The weighing function for each of the local model is used. The at least one data map comprises empirically derived values corre¬ sponding to the engine operating parameters. The ECM 102 processes the received signals of the engine operating parameters through the global model, the at least one weighing function and the data map and determines/predicts the A/F ratio.