초록 ▼

An air/fuel ratio control method for an internal combustion engine corrects airflow prediction errors. The method compares the current airflow to the value that was predicted several events in the past and creates an error signal. Based on this error signal, the current fueling is adjusted. These tw

An air/fuel ratio control method for an internal combustion engine corrects airflow prediction errors. The method compares the current airflow to the value that was predicted several events in the past and creates an error signal. Based on this error signal, the current fueling is adjusted. These two mixtures, with equally offsetting lean and rich air/fuel ratios allow the catalytic converter to operate at peak efficiency despite prediction errors.

대표청구항 ▼

[ We claim:] [1.] A method for controlling an internal combustion engine coupled to an emission control device, the method comprising:at a first sample index, predicting a value of an engine operating parameter occurring during a second sample index;injecting a first fuel amount into the engine base

[ We claim:] [1.] A method for controlling an internal combustion engine coupled to an emission control device, the method comprising:at a first sample index, predicting a value of an engine operating parameter occurring during a second sample index;injecting a first fuel amount into the engine based on said predicted value;determining whether said first injected fuel amount resulted in an inadvertent air/fuel ratio error; andoffsetting said air/fuel ratio error by injecting a second fuel amount at an index after said first index based on an actual value of said engine operating parameter.