| 摘要 |
<p>PURPOSE:To prevent an air-fuel ratio from becoming over lean by renewing a learning value in a learning value table by a learning value not subjected to the influence of canister purge just after the canister purge when a shift is made from the canister purge to purge cut. CONSTITUTION:There is provided a actuator drive judgement means 40 for canister purge which judges whether the conditions of canister purge is established or not and a learning value table 50 which stores learning values at every idle state as well as separates into plural adress areas an engine operation area according to an engine speed N and load data L. When a shift is made from purge cut to canister purge, respective adress learning value data in the table just after the shift is stored in a RAM 33 by a learning value data store means 52. Further, in the case where it is judged that the purge amount is large upon the canister purge, the respective adress learning values are renewed with the learning value data not subjected to the influence of purge just after the canister purge when the shift is made to the purge cut.</p> |
