METHOD AND DEVICE FOR DETERMINING A STARTING TIME OF A REGENERATION PROCESS FOR REGENERATING A DIESEL PARTICLE FILTER

摘要

Method for determining a starting time of a regeneration process of a particle filter which is connected into the exhaust train of an internal combustion engine, in particular of a diesel engine, wherein the data of an air mass flow rate meter, of an exhaust gas temperature sensor and of a differential pressure sensor are fed to a control unit and the control unit starts the regeneration on the basis of the data by means of the comparison with characteristic diagrams.

主权项

1. A method for determining a starting time of a regeneration process of a particle filter which is connected into the exhaust train of an internal combustion engine, comprising:
providing characteristic diagrams of exhaust gas temperature, mass air flow and differential pressure; providing an air mass flow rate meter measuring air mass flow to the internal combustion engine and providing measured air mass flow rate data to a control unit; providing an exhaust gas temperature sensor measuring temperature of exhaust gas from the internal combustion engine and providing measured exhaust gas temperature data to a control unit; providing a differential pressure sensor measuring pressure difference between and inlet and outlet of the particle filter and providing measured differential pressure data to a control unit; providing characteristic diagrams of exhaust gas temperature, mass air flow and differential pressure at one or more particle filter soot load state conditions; determining the starting time for regeneration by comparing measured data to the characteristic diagrams