Modeling and control of turbocharged diesels for medium and heavy vehicles

Using a nonlinear mathematical model developed for high-speed turbocharged diesels, a spectrum of problems in nonlinear analysis, control and optimization are approached and solved for a new generation of medium- and heavy-duty vehicles. It is shown that the model simplification leads to serious problems in design, optimization and deployment of advanced turbocharged diesels. The overall vehicle performance can be significantly improved by incorporating reliable diesel mathematical models in energy-management system design by optimizing steady-state characteristics and diesel dynamics. A drive-by-wire heavy-duty diesel is considered, and a nonlinear mathematical model is developed. A family of nonlinear PID-type controllers is designed to ensure the required controllability, manoeuvrability, driveability, tracking and disturbance attenuation. Experimental results are included