A Semi-Empirical Model for Fast Residual Gas Fraction Estimation in Gasoline Engines DaimlerChrysler Corporation

Format:

Conference/Event

Author/Creator:

Amer, Amer A., author.

Conference Name:

Powertrain & Fluid Systems Conference and Exhibition (2006-10-16 : Toronto, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2006

Summary:

Accurate accounting for fresh charge (fuel and air) along with trapped RGF is essential for the subsequent thermodynamic analysis of combustion in gasoline engines as well as for on-line and real-time quantification as relevant to engine calibration and control. Cost and complexity of such techniques renders direct measurement of RGF impractical for running engines.In this paper, an empirically-based approach is proposed for on-line RGF, based on an existing semi-empirical model [1]. The model developed expands the range over which the semi-empirical model is valid and further improves its accuracy. The model was rigorously validated against a well correlated GT-POWER model as well as results from 1D gas exchange model [2]. Overall, using this model, RGF estimation error was within 1.5% for a wide range of engine operating conditions. The model will be implemented in Dyno development and calibration at Chrysler Group

Notes:

Vendor supplied data

Publisher Number:

2006-01-3236

Access Restriction:

Restricted for use by site license