Patent ID: 7210285
Filing Date: 2007-05-01
Classification: F01N,F02B,F02D,Y02T

Abstract:
1. An internal combustion engine exhaust gas purifying system having a continuous regenerating diesel particulate filter system in an exhaust passage of an internal combustion engine to oxidize and remove collected particulate matter by performing a regenerating-mode operation when a quantity of the collected particulate matter in a filter of the filter system to collect the particulate matter is greater than or equal to a predetermined judgment value for regeneration, comprising: collected-quantity estimation means for estimating the quantity of the collected particulate matter in the filter; and maximum-fuel-injection-quantity restricting means for restricting a maximum fuel injection quantity of the internal combustion engine when the quantity of the collected particulate matter estimated by the collected-quantity estimation means is greater than or equal to a predetermined judgment value for restriction, the maximum-fuel-injection-quantity restricting means restricting the maximum fuel injection quantity either during or not during the regenerating-mode operation, said predetermined judgment value for restriction being smaller than said predetermined judgment value for regeneration.