Patent ID: 7458353
Filing Date: 2008-12-02
Classification: F02D,F02N,F02P,Y02T

Abstract:
1. An automatic stop device for an internal combustion engine that executes an automatic internal combustion engine stop control to stop the operation of the internal combustion engine after a predetermined automatic stop condition is satisfied, comprising: a load control unit that removes a load on the internal combustion engine or reduces the load to a predetermined level when the automatic stop condition is satisfied; a load recognition unit that recognizes a magnitude of the load acting on the internal combustion engine before the load is removed or reduced by the load control unit; and an ignition timing control unit, upon the satisfaction of the automatic stop condition, that calculates a difference between the magnitude of the load on the internal combustion engine before and after the automatic stop condition is satisfied in accordance with the magnitude of the load on the internal combustion engine, selects an ignition timing retard amount of an ignition plug such that the retard amount is increased the greater the difference between the magnitude of the load before and after the automatic stop condition is satisfied, and retards the ignition timing of the ignition plug by the retard amount at substantially the same moment as the load removing operation or the load reducing operation is executed by the load control unit, before the automatic stop control is initiated.