Patent ID: 7823378
Filing Date: 2010-11-02
Classification: F01N,F02D,Y02A,Y02T

Abstract:
1. A method of controlling an exhaust gas purification system used in an internal combustion engine, the engine comprising, a diesel particulate filter device disposed in an exhaust gas passage thereof, a collection amount detection means for detecting a collection amount of diesel particulates in a filter of the diesel particulate filter device, a regeneration time determination means for determining regeneration time of the filter based on a detection result of the collection amount detection means, an exhaust temperature raising means for raising a temperature of an exhaust gas, and a regeneration control means for regenerating the filter when it is determined by the regeneration time determination means as the predetermined regeneration time, the regeneration control means having a forced regeneration mode that the exhaust temperature is raised by the exhaust temperature raising means so as to forcedly regenerate the filter when it is determined by the regeneration time determination means as the predetermined regeneration time and the exhaust gas temperature is low, and an arbitrary regeneration mode that the filter is arbitrarily regenerated based on the detection result of the collection amount detection means, wherein while the exhaust temperature is being raised by the exhaust temperature raising means in the arbitrary regeneration mode, a compressor of a vehicular air conditioner is brought into an operation stop state.