Internal combustion engine exhaust particle filter monitoring and regeneration process consists of establishing and storing mathematical relationships and effecting regeneration above pre-set threshold level for soot content

摘要

The process consists of establishing mathematical relationships for the temperature of exhaust gases on the input and outlet sides of the particle filter, and a recurrent relationship between the temperature and mass of soot in the filter, and storing these relationships in memories that are accessible during monitoring of filter regeneration. The process consists of establishing mathematical relationships for the temperature of exhaust gases on the input and outlet sides of the particle filter, and a recurrent relationship between the temperature and mass of soot in the filter, and storing these relationships in memories that are accessible during monitoring of filter regeneration. Initial parameters for temperature, pressure, soot mass, and the concentration of CO and hydrocarbons in the exhaust gases on the input side of the filter are measured, and filter regeneration is initiated when calculated threshold levels are exceeded.