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In this paper, a Nonlinear Model Predictive Control (NMPC) is applied for a torque demand control for speed tracking of vehicles with a variable valve lift engine. The engine control must satisfy various constraints, e.g., actuator limitations, drivability and A/F ratio, etc. Therefore, we apply NMPC based on a collocation method which can handle the constraints explicitly. Moreover, a fuel injection...
In this paper, a nonlinear torque observer for spark ignition (SI) engine is proposed and a torque control method based on the observer is presented. In the observer, a torque production model is employed to give the nominal value of torque estimation. Then, using the rotational dynamic equation of the crankshaft, a nonlinear adjusting law is added to correct the nominal estimation. The proposed observer...
In this study, we purpose a control system of engine torque for a V6 spark ignition engine with a variable valve lift system. We apply a nonlinear receding horizon control to the SICE benchmark problem where we assume that the control inputs are throttle angle, variable valve lift and ignition timing. Moreover, a fuel injection control is also developed by estimating the amount of air in the engine...
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