Patent ID: 7231761
Filing Date: 2007-06-19
Classification: F01N,F02B,F02D,Y02T

Abstract:
1. An exhaust gas purification system of an internal combustion engine, the exhaust gas purification system comprising: a particulate filter disposed in an exhaust pipe of the engine; temperature increasing means for increasing temperature of the particulate filter; operating state sensing means for sensing an operating state of the engine; temperature sensing means for sensing the temperature of the particulate filter; deposition quantity estimating means for estimating a deposition quantity of particulate matters deposited on the particulate filter; and regeneration controlling means for operating the temperature increasing means to increase the temperature of the particulate filter to proximity of a predetermined target temperature when an output of the deposition quantity estimating means exceeds a predetermined value, whereby the particulate matters deposited on the particulate filter are combusted and eliminated, wherein the regeneration controlling means includes: