Camless Engine Control for a Robust Unthrottled Operation
نویسنده
چکیده
Substantial improvements in engine fuel e ciency torque and reduction of emissions are available with cam less actuation capable of continuous control of engine valve lift duration and timing A phenomenological model has been developed for an unthrottled operation that is key to e ciency gain An adaptive nonlinear controller has been designed to coordinate intake valve lift and duration by using high sampling rate intake manifold pressure and ow sensors The driver torque demand is satis ed while pumping losses are minimized Simulation results for a cylinder L engine demonstrate event to event tracking and cylinder to cylinder balancing The controller corrects for variations in e ective ow areas e g valve deposits induction ram e ects and temperature
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