Patent ID: 6574956
Filing Date: 2003-06-10
Classification: F01N,F02B,F02D,F02M,Y02T

Abstract:
A method for interrupting regeneration of a particulate filter in an exhaust gas system of an internal combustion engine with an mass air flow rate (MAF) to the engine and an intake manifold absolute pressure (MAP) being detected by sensors and being varied by operating an intake throttle valve disposed in an inlet of the engine and an exhaust gas recirculation valve disposed in an exhaust gas recirculation system coupled to an exhaust of the engine and an intake of the engine, comprising the steps ofactuating the exhaust gas recirculation valve to maintain a predetermined air mass flow rate (MAFdes); and actuating the intake throttle valve to maintain a predetermined intake manifold absolute pressure (MAPmod) wherein said predetermined intake manifold absolute pressure (MAPmod) is based on a pressure correction (&Dgr;) and a desired intake manifold absolute pressure (MAPdes), said pressure correction (&Dgr;) depends on a difference between said predetermined mass air flow rate (MAFdes) and a measured mass air flow rate (MAFmes), said measured mass air flow rate (MAFmes) is based on an output of the mass air flow sensor.