Patent ID: 6216676
Filing Date: 2001-04-17
Classification: F02D,Y02T

Abstract:
An internal combustion engine system in which a generation amount of soot increases to a peak amount when increasing an amount of an inert gas supplied to a combustion chamber, the system comprising a combustion chamber and a controller that:selectively switches operation of the engine system between a first combustion mode in which an amount of the inert gas supplied to the combustion chamber is larger than an amount of the inert gas that causes an amount of soot that is generated to become the peak amount, such that soot is hardly generated, and a second combustion mode in which an amount of the inert gas supplied to the combustion chamber is smaller than the amount of the inert gas that causes the generation amount of soot to become the peak amount; andcontrols the execution of the first combustion mode and the second combustion mode so that the frequency of switching between the first combustion mode and the second combustion mode is inhibited from rising above a predetermined amount.