Abstract
The development of clean and the fuel economy engine is one of the important issue for the global environment protection. It is thought that the EGR control of the engine with turbo charger becomes important as one of the solutions. However there is mutual interference between the boost pressure and EGR rate. And also the system has nonlinear characteristics caused by the turbo lag. These problems make it difficult to control the EGR rate accurately. To overcome the above problems, we applied the Sliding Mode Controller with MIMO. And furthermore, we adapted the model structure that does not require the observer. Then we could get the good performance.
