Open AccessReal-time friction torque estimation on a diesel engine using the crankshaft speed fluctuation
Author(s) -
Seddak Mohammed,
Lakhdari A. Amina
Publication year - 2021
Publication title -
engineering review
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.198
H-Index - 11
eISSN - 1849-0433
pISSN - 1330-9587
DOI - 10.30765/er.1515
Subject(s) - crankshaft , torque , automotive engineering , diesel engine , stall torque , friction torque , ignition system , engineering , combustion , mechanics , control theory (sociology) , computer science , mechanical engineering , direct torque control , physics , chemistry , control (management) , thermodynamics , electrical engineering , voltage , artificial intelligence , induction motor , aerospace engineering , organic chemistry
Under the pressure of stricter regulations on pollutant emissions and the desire of users for lower fuel consumption and more comfortable driving, engine control based on torque has been developed. To provide an accurate estimate of effective torque, friction losses must be modeled. The details of a model that predicts the total instantaneous friction torque for compression ignition engines are described. The model is based on a combination of the dynamic model of the crankshaft and the thermodynamic model. The total instantaneous friction torque is determined using the instantaneous measurements or numerical predictions of the gas pressure in the combustion chamber, the rotational speed of the crankshaft and the load torque. The experimental data and the numerical simulation results were compared. The comparison between the different variables shows a good agreement between the simulation and the experimental results.