Control Device and Control Method for Internal Combustion Engine

The invention relates to a control device and a control method for an internal combustion engine. An engine includes a variable valve mechanism capable of holding a valve timing of an intake valve in an intermediate phase when the engine is started. An ECU calculates a degree of deposit adhesion in a combustion chamber, and calculates a deposit correction amount that is a retard correction amount for an ignition timing set in accordance with the calculated degree of the deposit adhesion. The ECU calculates a first correction amount that is a first adaptive value for the retard correction amount for the ignition timing in a reference phase of the valve timing and a second correction amount that is a second adaptive value for the retard correction amount for the ignition timing in an adaptation phase of the valve timing. The deposit correction amount is set based on the first correction amount and the second correction amount. 本申请涉及用于内燃发动机的控制装置和控制方法。其中，发动机包括可变配气机构，该可变配气机构能够在发动机启动时将进气门的气门正时保持处于中间相位。电子控制单元计算燃烧室中沉