초록

A method for accurately determining the measure of mass airflow into an internal combustion engine determines measures of various engine parameters and implements the mathematical modeling technique of prediction and estimation.

대표청구항 ▼

A method of controlling a motor vehicle engine comprising the steps of: (a) retrieving from a memory an initialization set comprising a prediction value of manifold pressure and a prediction value of mass air flow and thereafter iteratively; (b) measuring a plurality of motor vehicle engine paramete

A method of controlling a motor vehicle engine comprising the steps of: (a) retrieving from a memory an initialization set comprising a prediction value of manifold pressure and a prediction value of mass air flow and thereafter iteratively; (b) measuring a plurality of motor vehicle engine parameters, wherein manifold pressure is a measured motor vehicle engine parameter; (c) selecting, from a plurality of sets of correction coefficients, a select set of correction coefficients responsive to at lease one of the measured motor vehicle engine parameters; (d) estimating, in response to (i) the measured motor vehicle engine parameters, (ii) the select set of correction coefficients and (iii) the prediction values of mass air flow and manifold pressure, an estimation value of manifold pressure and an estimation value of mass air flow, wherein mass air flow is an unmeasured motor vehicle engine parameter; (e) retrieving, from a plurality of sets of model parameters, a select set of model parameters responsive to at least one of the measured motor vehicle engine parameters; and (f) predicting, in response to (i) the estimation values of manifold pressure and mass airflow, the (ii) plurality of measured motor vehicle engine parameters, and (iii) the select set of model parameters, a new prediction value of manifold pressure and a new prediction value of mass air flow; (g) controlling the motor vehicle engine in response to the new prediction value of mass airflow.