The present work has the aim of developing a semi-empirical correlation to estimate the NO₂/NOx ratio as a function of significant engine operating variables in a modern EURO VI diesel engine. The experimental data used in the present study were acquired at the dynamic test bench of ICEAL-PT (Internal Combustion Engine Advanced Laboratory at the Politecnico di Torino), in the frame of a research activity on the optimization of a General Motors Euro VI prototype 1.6-liter diesel engine equipped with a single-stage variable geometry turbine and a solenoid Common Rail system. The experimental tests were conducted over the whole engine map. A preliminary analysis was carried out to evaluate the uncertainty of the experimental acquired data and the NO₂/NOx ratio. The main engine variables which were expected to be related to the NO₂ formation were then identified, and a second-order polynomial model was introduced to model the NO₂/NOx ratio as a function of the abovementioned related engine variables.

Estimation of the Engine-Out NO2/NOx Ratio in a EURO VI Diesel Engine / Finesso, Roberto; Misul, DANIELA ANNA; Spessa, Ezio. - In: SAE TECHNICAL PAPER. - ISSN 0148-7191. - ELETTRONICO. - (2013). ((Intervento presentato al convegno SAE 2013 World Congress and Exhibition tenutosi a Detroit, USA nel April 16-18, 2012 [10.4271/2013-01-0317].

Estimation of the Engine-Out NO2/NOx Ratio in a EURO VI Diesel Engine

FINESSO, ROBERTO;MISUL, DANIELA ANNA;SPESSA, EZIO
2013

Abstract

The present work has the aim of developing a semi-empirical correlation to estimate the NO₂/NOx ratio as a function of significant engine operating variables in a modern EURO VI diesel engine. The experimental data used in the present study were acquired at the dynamic test bench of ICEAL-PT (Internal Combustion Engine Advanced Laboratory at the Politecnico di Torino), in the frame of a research activity on the optimization of a General Motors Euro VI prototype 1.6-liter diesel engine equipped with a single-stage variable geometry turbine and a solenoid Common Rail system. The experimental tests were conducted over the whole engine map. A preliminary analysis was carried out to evaluate the uncertainty of the experimental acquired data and the NO₂/NOx ratio. The main engine variables which were expected to be related to the NO₂ formation were then identified, and a second-order polynomial model was introduced to model the NO₂/NOx ratio as a function of the abovementioned related engine variables.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2518508
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