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Correction
|
Purpose
|
Conditions
|
Action
|
|
Fuel injection volume increase correction when start
|
To maintain engine speed stability when start
|
Cranking or just after engine start
|
Lower ECT: Larger correction
|
|
Warm-up correction
|
To maintain combustion stability during warm-up
|
According to ECT
|
Lower ECT: Larger correction
|
|
Basic heavy load increase correction
|
To increase engine torque and decrease exhaust gas temperature under heavy load
|
As required by engine load and engine speed under heavy load
|
Lower ECT: Larger correction
|
|
Basic closed loop correction
|
To control air/fuel ratio close to stoichiometric
|
When control is in closed loop zone
|
-
|
|
Learning correction
|
To deal with change in air/fuel ratio caused by secular change
|
At all times
|
-
|
|
D range correction
|
To maintain engine speed stability when shifting to D range
|
According to ECT at D range shift
|
Lower ECT: Larger correction
|
|
Acceleration/deceleration correction
|
Corrects change in air-fuel ratio during deceleration or acceleration when engine is cold
|
According to ECT
|
Lower ECT: larger correction
|
