초록 ▼

In a fuel supply control method of an automobile engine wherein a plurality of parameters representing an operating condition of the engine are measured, and a fuel supply quantity is determined based on the measured values so as to attain a target air-fuel ratio, an amount of air flowing into each

In a fuel supply control method of an automobile engine wherein a plurality of parameters representing an operating condition of the engine are measured, and a fuel supply quantity is determined based on the measured values so as to attain a target air-fuel ratio, an amount of air flowing into each cylinder in an n-th stroke (n is an arbitrary integer) is calculated for prediction by using the measured parameters in a stroke preceding the n-th stroke, and the fuel supply quantity is determined by the predicted value of the amount of air in the n-th stroke and a target value of the air-fuel ratio in the n-th stroke.

대표청구항 ▼

A method for determining control variables of an engine of an automobile on the basis of engine operating parameters and a target air-fuel ratio, said method comprising the steps of: (a) measuring a plurality of parameters representing engine operating conditions including an intake air flow at the

A method for determining control variables of an engine of an automobile on the basis of engine operating parameters and a target air-fuel ratio, said method comprising the steps of: (a) measuring a plurality of parameters representing engine operating conditions including an intake air flow at the present state of the engine; (b) estimating a plurality of unmeasured parameters representing engine operating conditions at the present state of the engine on the basis of said measured parameters; (c) predicting engine operating conditions at a coming state of the engine on the basis of the measured parameters and the estimated parameters; (d) determining control variables at the coming state of the engine on the basis of the predicted engine operating conditions; and (e) said estimating step including a step for estimating said unmeasured parameters on the basis of difference values between the measured parameters and the corresponding estimated parameters.