Particle mass estimating system for particle filter in oil engine of motor vehicle, has summer determining mass of particles remaining in filter based on mass obtained from determination unit and mass obtained from dynamic model

摘要

The system has a pressure sensor (38) for detecting a differential pressure at terminals of a particle filter (23). A determination unit determines the mass of particles in the filter based on the pressure, and has a stored map of the mass of particles. A dynamic model determines the mass of particles retained within the filter based on a characteristic value of functioning of an internal combustion engine (1). A summer determines the mass of particles remaining in the filter based on the mass obtained from the determination unit and the mass obtained from the model. An independent claim is also included for a method of estimating mass of particles retained in a particle filter that is mounted on an exhaust line of an internal combustion engine.