A Study of the Characteristics of Fuel-Film Dynamics for Four-Stroke Small-Scale Spark-Ignition Engines

2009-01-0591

04/20/2009

Event
SAE World Congress & Exhibition
Authors Abstract
Content
The phenomenon of fuel-film dynamics for four-stroke small-scale spark-ignition engines is investigated in this paper. A first-order fuel-film model, so-called tau-x model, is used to represent the fuel dynamics. The parameters of fuel-film model, which consists of the portion of fuel that deposited on the manifold wall and the time constant of the fuel evaporation process, are identified using the recursive least squared technique. Performances of the proposed algorithm are evaluated using a nonlinear engine model in Matlab/Simulink. The preliminary simulation results show that the proposed algorithm can accurately be used to identify the parameters of fuel-film model. The experimental data are then utilized to study the characteristics of fuel-film dynamics, and show that the fuel-film dynamics is significantly affected by engine speed, throttle opening, injection timing, and intake temperature.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-0591
Pages
12
Citation
Wu, Y., Chen, B., Hsieh, F., and Ke, C., "A Study of the Characteristics of Fuel-Film Dynamics for Four-Stroke Small-Scale Spark-Ignition Engines," SAE Technical Paper 2009-01-0591, 2009, https://doi.org/10.4271/2009-01-0591.
Additional Details
Publisher
Published
Apr 20, 2009
Product Code
2009-01-0591
Content Type
Technical Paper
Language
English