Patent ID: 7661403
Filing Date: 2010-02-16
Classification: F02D,F02N,Y02T

Abstract:
1. A start controller for an internal combustion engine, including a starter which cranks a crank shaft of the engine at a time of starting engine and a variable intake valve controller which adjusts the intake valve characteristic, the start controller comprising: a start control means for starting a cranking of the engine by means of the starter in a situation that an actual compression ratio is decreased by the variable intake valve controller, the start control means starting combustion of the engine at a time when an engine speed is increased to restrict a vehicle vibration due to an initial combustion under a predetermined level, and the start control means increasing the actual compression ratio by means of the variable intake valve controller at a time when or before the combustion is started; wherein an engine speed in which the vehicle vibration due to the initial combustion is restricted to the predetermined level corresponds to an engine speed in which the vehicle vibration is restricted under the predetermined level even at an engine speed which exceeds a resonance vibration speed range between the engine and the vehicle.