PROJECT TITLE :
Adaptive Control of a Recompression Four-Cylinder HCCI Engine
An adaptive controller is presented for the control of combustion phasing in a very multicylinder homogeneous charge compression ignition engine. Adaptive parameter estimation is employed to switch a model-based mostly feedforward controller for every cylinder's start of injection (SOI) timing in an effort to mitigate model errors and increase the feedforward management accuracy. In-cylinder pressure measurements are used to calculate combustion phasing, that is compared with the prediction of an on-line nonlinear engine model to drive the parameter estimation that adapts the feedforward controller. It is demonstrated through experiments that the adaptive parameter will scale back the parameterization effort by allowing the model to adapt and match the response of every cylinder. It's also shown that the adaptive feedforward management is more correct in the sense that load transitions can be achieved with less correction from the feedback controller. Overall, a median reduction of forty one% in absolutely the worth of the SOI feedback part at steady state is achieved.
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