Application of FEC in Diesel Engines

摘要

In this paper, the disadvantages of fuel injection system for DI diesel engines on the stability of idle-speed have been investigated. By taking into account the nonlinearity, time variation and unsteadiness of idling procss in diesel engines, fuzzy measurement for solving the uncertainty of sampling information acquisition is discussed, the fuzzy and electronic control (FEC) theory for diesel engines has been proposed in this aper. Simulative tests are conducted in an electronci control high-pressure accumlator type diesel fuel injection system. The combination of fuzzy control and PI control is feasible to improve the overall perofrmance of electronic injection syste, espeically the performance of idle-speed, in other words, to decrease the exhaust emissions and to iprove the consormability.