Validation of a Self Tuning Gross Heat Release Algorithm Lund Technical University

Format:

Conference/Event

Author/Creator:

Manente, Vittorio, author.

Conference Name:

2008 SAE International Powertrains, Fuels and Lubricants Congress (2008-06-23 : Shanghai, China)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2008

Summary:

The present paper shows the validation of a self tuning heat release method with no need to model heat losses, crevice losses and blow by. Using the pressure and volume traces the method estimates the polytropic exponents (before, during and after the combustion event), by the use of the emission values and amount of fuel injected per cycle the algorithm calculates the total heat release. These four inputs are subsequently used for computing the heat release trace. The result is a user independent algorithm which results in more objective comparisons among operating points and different engines.In the present paper the heat release calculated with this novel method has been compared with the one computed using the Woschni correlation for modeling the heat transfer. The comparison has been made using different fuels (PRF0, PRF80, ethanol and iso-octane) making sweeps in relative air-fuel ratio, engine speed, EGR and CA 50

Notes:

Vendor supplied data

Publisher Number:

2008-01-1672

Access Restriction:

Restricted for use by site license