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Parameterized Diesel Engine Heat Release Modeling for Combustion Phasing Analysis

Mikael Thor (Institutionen för signaler och system, Reglerteknik) ; Ingemar Andersson (Institutionen för signaler och system, Signalbehandling) ; Tomas McKelvey (Institutionen för signaler och system, Signalbehandling)
SAE Technical Paper Series 2009-01-0368, SAE 2009 World Congress, Detroit, MI, USA (2009)
[Konferensbidrag, refereegranskat]

Different Vibe function model structures for parameterized diesel engine heat release models are investigated. The work is motivated by the need of such models when closed-loop combustion control is implemented based on torque domain combustion phasing analysis. Starting from the studied model structures, models are created by estimating the model parameters using a separable least squares approach. After this, the models are evaluated according to two different performance criteria. The first criterion rates the ability of the estimated models to describe reference mass fraction burned traces. The second criterion assesses how accurately the models estimate the reference combustion phasing measure. As expected, the analysis shows that the models based on the most flexible model structure achieve the best results, both regarding mass fraction burned estimation and combustion phasing estimation. However, even if the less complex models describe the mass fraction burned traces with lower accuracy, these models are able to estimate the combustion phasing measure surprisingly well.



Denna post skapades 2009-04-28. Senast ändrad 2017-12-01.
CPL Pubid: 93180

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Reglerteknik (2005-2017)
Institutionen för signaler och system, Signalbehandling (1900-2017)

Ämnesområden

Reglerteknik
Signalbehandling

Chalmers infrastruktur