For the simultaneous evaluation of the influence onengine knock of both chemical conditions and globaloperating parameters, a combined tool was developed.Thus, a two-zone kinetic model for SI engine combustioncalculation (Ignition) was implemented in the enginecycle simulation commercial code. The combined modelpredictions are compared with experimental data from asingle-cylinder test engine. This shows that the modelcan accurately predict the knock onset and in-cylinderpressure and temperature for different lambdaconditions, with and without EGR. The influence of nitricoxide amount from residual gas in relation with knock isfurther investigated. The created numerical toolrepresents a useful support for experimentalmeasurements, reducing the number of tests required toassess the proper engine control strategies. This kind ofcombined analysis is not possible yet with othernumerical tools.

Knock modelling: an integrated tool for detailed chemistry and engine cycle simulation / A., Gogan; Montorsi, Luca; F., Mauss; S. S., Sayeed; B. A., Sunden. - STAMPA. - --:(2003), pp. -----. (Intervento presentato al convegno SAE Powertrain & Fluid Systems Conference & Exhibition tenutosi a Pittsburgh, PA, USA nel Ottobre 2003).

Knock modelling: an integrated tool for detailed chemistry and engine cycle simulation

MONTORSI, Luca;
2003

Abstract

For the simultaneous evaluation of the influence onengine knock of both chemical conditions and globaloperating parameters, a combined tool was developed.Thus, a two-zone kinetic model for SI engine combustioncalculation (Ignition) was implemented in the enginecycle simulation commercial code. The combined modelpredictions are compared with experimental data from asingle-cylinder test engine. This shows that the modelcan accurately predict the knock onset and in-cylinderpressure and temperature for different lambdaconditions, with and without EGR. The influence of nitricoxide amount from residual gas in relation with knock isfurther investigated. The created numerical toolrepresents a useful support for experimentalmeasurements, reducing the number of tests required toassess the proper engine control strategies. This kind ofcombined analysis is not possible yet with othernumerical tools.
2003
SAE Powertrain & Fluid Systems Conference & Exhibition
Pittsburgh, PA, USA
Ottobre 2003
--
--
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A., Gogan; Montorsi, Luca; F., Mauss; S. S., Sayeed; B. A., Sunden
Knock modelling: an integrated tool for detailed chemistry and engine cycle simulation / A., Gogan; Montorsi, Luca; F., Mauss; S. S., Sayeed; B. A., Sunden. - STAMPA. - --:(2003), pp. -----. (Intervento presentato al convegno SAE Powertrain & Fluid Systems Conference & Exhibition tenutosi a Pittsburgh, PA, USA nel Ottobre 2003).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/742323
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