Patent ID: 7514264
Filing Date: 2009-04-07
Classification: B01D,F01N,F02D,G01N,Y02A,Y02T,Y10T

Abstract:
1. Method for estimating sulfur content in fuel of an internal combustion engine ( 1 ) equipped with at least one cylinder ( 2 ) and at least one catalyser ( 11 ), said catalyser ( 11 ) being capable of storing a quantity of sulfur and NO x groups and being subjected to a regeneration process to remove sulfur, the method providing use of a current sulfur concentration value (S old ) and a correction of said current sulfur concentration value (S old ) in order to obtain a new sulfur concentration value (S new ), comprising the steps of: measuring a first time interval (t determining a quantity (SO estimating a second time interval (t determining a multiplicative correction coefficient as a ratio between said first time interval (t determining an end of said first time interval (t