Yasser Mohammed Sayed Yacoub

Diesel Particulate Filter Regeneration: Control of Calibration?

Abstract Diesel particulate filters are an efficient means of reducing particulate emissions of diesel engines by orders of magnitude. The necessary periodical regeneration of these filter systems requires drastic changes in the engine management, notably in fuel and air path control, because the temperature levels required for regeneration are 200°-400°C above normal levels. The approach taken to address this problem is described in this paper. It is at the same time used to illustrate typical engine control challenges and explains why model-based control methods still find only limited application in powertrain control. In particular, the importance of feedforward control is stressed, leading to the question: Control or Calibration?