Model-based Control of Premixed Combustion in Diesel Engine with 4-stage Fuel Injections

Abstract

In this paper, the model-based control system is applied to the premixed combustion in a diesel engine with 4-stage fuel injections. 2 inputs and 2 outputs (2I2O) feedforward (FF) controller is designed by our original discretized combustion model. In the FF controller, the model is linearized in the real-time operation and the inverse model is obtained from it. The control performance is evaluated by the 2I2O control test, where the interval of 1st and 2nd main heat release rate peak and the ratio between 1st and 2nd heat release rate peak are controlled by operating 2nd main injection timing and its quantity. The control system showed good performance in the reference following test.