초록 ▼

This system computes final fuel injection amount TAU on the basis of the following formula; TAU=A×TP+B+J where A : a first learning term B : a second learning term TP : basic fuel injection amount J : correction amount Learning control is effected by correcting the second learning term B during idl

This system computes final fuel injection amount TAU on the basis of the following formula; TAU=A×TP+B+J where A : a first learning term B : a second learning term TP : basic fuel injection amount J : correction amount Learning control is effected by correcting the second learning term B during idling periods and by correcting the first learning term A when an engine has larger than a predetermined load.

대표청구항 ▼

A system for learning control of the air-fuel ratio in an electronically controlled engine comprising: means for generating an indication of engine load; means for generating a ratio signal indicative of air-fuel ratio by monitoring exhaust gases of said engine; and processing means for: (1) determi

A system for learning control of the air-fuel ratio in an electronically controlled engine comprising: means for generating an indication of engine load; means for generating a ratio signal indicative of air-fuel ratio by monitoring exhaust gases of said engine; and processing means for: (1) determining a basic fuel injection amount, TP, as a predetermined function of engine load, (2) determining a final fuel injection amount, TAU, in accordance with TAU=AxTP+B+J wherein A is a first learning term, B is a second learning term and J is a correction amount, (3) correcting said first learning term A in response to said ratio signal when said engine has a load larger than a predetermined value, and (4) correcting said second learning term B in response to said ratio signal when said engine has a load smaller than said predetermined value.