Patent ID: 6688286
Filing Date: 2004-02-10
Classification: F02D,F02P,G01L,Y02T

Abstract:
A knock control apparatus for an engine, said apparatus comprising:base ignition timing setting means for setting base ignition timing in accordance with an operating condition of the engine; knock determining means for determining an occurrence of knock; retard value setting means for setting a retard value to retard the base ignition timing when the occurrence of knock is determined; retard value learning means for learning a learned value based on the retard value in a stable condition; base retard value setting means for setting a base retard value in accordance with an accelerating condition when an acceleration of the engine is determined; final corrective value setting means for setting a corrective value by correcting the base retard value based on the learned value; and ignition timing setting means for setting ignition timing when the engine is in an acceleration condition, the ignition timing being set based on the base ignition timing and the corrective value.