专利汇可以提供Air-fuel ratio learning control apparatus for electronically controlled fuel injection type internal-combustion engine专利检索,专利查询,专利分析的服务。并且PURPOSE:To improve the characteristics and stability of air-fuel ratio control, by decreasing the constants of proportionality ad integration of feedback correction with increasing of the frequency of renewing a learnt correction factor in determining the learnt correction factor by learning an air-fuel ratio feedback correction factor. CONSTITUTION:A learnt correction factor determining means reads out a learnt correction factor alpha0 from a RAM on the basis of the engine speed N and load Tp, and a learnt correction factor means makes a weighted average of the learnt correction factor alpha0 and an air-fuel ratio feedback correction factor alpha and renews the learnt correction factor alpha0 at the time of steady operation of an engine. When the frequency of renewing the learnt correction factor alpha0 corresponding to the operational conditions of the engine, detected by a means for counting the frequency of renewal, exceeds a prescribed value, a means for correcting the constants of proportionality and integration decreases the constants of proportionality and integration of a means for determining the air-fuel ratio feedback correction factor.,下面是Air-fuel ratio learning control apparatus for electronically controlled fuel injection type internal-combustion engine专利的具体信息内容。
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