Patent ID: 7753028
Filing Date: 2010-07-13
Classification: F02P,Y02T

Abstract:
1. A control apparatus for an internal combustion engine in which an ignition mechanism is provided for each cylinder, the control apparatus comprising: an engine speed detection section that detects a speed of the internal combustion engine; an ignition mode selection section that selects a fixed ignition mode in which an ignition timing is fixed to a predetermined timing when the detected engine speed is low; a start/operation determination section that determines whether the internal combustion engine is during a start-up or is in operation after a completion of the start-up when in the fixed ignition mode; and a fixed ignition control section that controls the ignition timing when in the fixed ignition mode, wherein when the internal combustion engine is in a non-high temperature state in which a temperature of the internal combustion engine is lower than a predetermined temperature, the fixed ignition control section fixes the ignition timing at a first crank angle, and when the internal combustion engine is in a high temperature state in which the temperature of the internal combustion engine is equal to or higher than the predetermined temperature, the fixed ignition control section fixes the ignition timing at a second crank angle retarded from the first crank angle when the start/operation determination section determines that the internal combustion engine is during the start-up, and at a third crank angle advanced from the second crank angle when the start/operation determination section determines that the internal combustion engine is in operation after the completion of the start-up.