20.500.12556/RUL-106211 Real time capable virtual NOx sensor for diesel engines based on a two-zone thermodynamic model This paper presents a control-oriented thermodynamic model capable of predicting nitrogen oxides (NOx) emissions in diesel engines. It is derived from zero-dimensional combustion model using in-cylinder pressure as the input. The methodology is based on a two-zone thermodynamic model which divides the combustion chamber into a burned and unburned gas zone. The original contribution of proposed method arises from: (1) application of a detailed two-zone modeling framework, developed in a way that the thermodynamic equations could be solved in a closed form without iterative procedure, which provides the basis for achieving high level of predictiveness, on the level of real-time capable models and (2) introduction of relative air-fuel ratio during combustion as a main and physically motivated calibration parameter of the NOx model. The model was calibrated and validated using data sets recorded in two different direct injection diesel engines, i.e. a light and a heavy-duty engine. The model is suitable for real-time applications since it takes less than a cycle to complete the entire closed cycle thermodynamic calculation including NOx prediction, which opens the possibility of integration in the engine control unit for closed-loop or feed-forward control. two zone modeling framework 0-d modeling NOx formation diesel engines chemical kinetics dvoconski termodinamski model 0D modeliranj tvorba NOx dizelski motorji kemijska kinetika true false true Angleški jezik Slovenski jezik Članek v reviji 2019-02-12 12:59:21 2019-02-12 12:59:26 2025-02-25 08:17:24 0000-00-00 00:00:00 2018 0 0 f. 1-17 Vol. 73 Apr. 2018 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.4:544.4:004.9(045) 1953-8189 10.2516/ogst/2018005 16019995 12853019 RAZ_Vihar_Rok_i2018.pdf RAZ_Vihar_Rok_i2018.pdf 1 3C16CB2A9BA02F0A581E0CC393A26A7C 4c297868101eb4e1c71058d9999151fd36c702e83905afd4672b3dc6f7d73681 4da4545c-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=116962 https://ogst.ifpenergiesnouvelles.fr/articles/ogst/abs/2018/01/ogst170111/ogst170111.html 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=116961 Fakulteta za strojništvo 0 0 0