Robust nonlinear controller for turbocharged diesel engines

This paper addresses a problem of controlling diesel engines equipped with a variable geometry turbocharger and an exhaust gas recirculation valve. The presence of two actuators and nonlinear behavior of the system makes the problem difficult to handle using classical control designs. Instead, we employ a recently developed control Lyapunov function (CLF) based design method that guarantees a robustness property interpretable as gain and phase margins. The controller has been tested in simulations and experimentally in the dynamometer test cell.