ABSTRACT

In internal combustion engines with multicylinders, each cylinder must generate an equal amount of torque. Furthermore, at a static operating mode, each combustion event in a cylinder must be performed in the same combustion quality. If this is not the case, then an imbalance will occur, and the engine will stumble and lose the smoothness in the power generation. The imbalance is due to the imbalances in the air intake path and the fueling path, the production errors among the cylinders, and the stochastic characteristics of the combustion phenomenon. This chapter deals with the cylinder-to-cylinder balancing problems via feedback control.