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

2006-01-3236

10/16/2006

Event
Powertrain & Fluid Systems Conference and Exhibition
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2006-01-3236
Pages
11
Citation
Amer, A., and Zhong, L., "A Semi-Empirical Model for Fast Residual Gas Fraction Estimation in Gasoline Engines," SAE Technical Paper 2006-01-3236, 2006, https://doi.org/10.4271/2006-01-3236.
Additional Details
Publisher
Published
Oct 16, 2006
Product Code
2006-01-3236
Content Type
Technical Paper
Language
English