izpis_h1_title_alt

Real time capable virtual NOx sensor for diesel engines based on a two-zone thermodynamic model
Vihar, Rok (Avtor), Žvar Baškovič, Urban (Avtor), Katrašnik, Tomaž (Avtor)

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Izvleček
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.

Jezik:Angleški jezik
Ključne besede:two zone modeling framework, 0-d modeling, NOx formation, diesel engines, chemical kinetics
Vrsta gradiva:Članek v reviji (dk_c)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2018
Št. strani:f. 1-17
Številčenje:Vol. 73
UDK:621.4:544.4:004.9(045)
ISSN pri članku:1953-8189
DOI:10.2516/ogst/2018005 Povezava se odpre v novem oknu
COBISS.SI-ID:16019995 Povezava se odpre v novem oknu
Število ogledov:171
Število prenosov:195
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Gradivo je del revije

Naslov:Oil & gas science and technology
Skrajšan naslov:Oil gas sci. technol.
Založnik:Institut français du pétrole
ISSN:1953-8189
COBISS.SI-ID:12853019 Povezava se odpre v novem oknu

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Številka projekta:P2-0401, MR:35395; EVA4green
Naslov:Energetsko strojništvo

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:dvoconski termodinamski model, 0D modeliranj, tvorba NOx, dizelski motorji, kemijska kinetika

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