Improved Cylinder Air Charge Estimation for Transient Air Fuel Ratio Control

  title={Improved Cylinder Air Charge Estimation for Transient Air Fuel Ratio Control},
  author={Jessy W. Grizzle and Jeffrey A. Cook and William Milam}
Modern automobile engines require precise regulation of air-fuel ratio (A/F) to attain high catalytic converter e ciency and minimize tailpipe emissions. During engine transients, good A/F control requires, in turn, accurate estimation of the air charge entering the cylinders during each induction event. This paper describes the development and validation of a nonlinear, open-loop air charge estimator. A key feature is the inclusion of the dynamics of the mass air ow meter. The estimator was… CONTINUE READING
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