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Information Technology Journal
Year: 2014  |  Volume: 13  |  Issue: 1  |  Page No.: 188 - 192

Development of a Mathematical Model of Dual Fuel Engine Speed Characteristics

Wenting Han, Wenhao Suo and Junchang Zhang    

Abstract: To test and analyze engine speed characteristics, most previous studies have adopted plots of speed and power and plots of speed and torque as characteristic curves of engine speed. This method of qualitative analysis does not look at other useful information in the data. To perform an in-depth analysis on the information embedded in the engine speed characteristics curve and provide quantitative parameters for dual fuel engine design or refit, this study uses a method of regression analysis to establish a parabolic model to describe the relationship between the power and rotational speed of a dual fuel engine and an inverse-logistic model to describe the relationship between torque and rotational speed. Using case studies, the model coefficients of determinations (R2) all exceeded 0.99 and the results include the rates of change of the power and torque, the maximum power and its confidence interval and the torque inflection point and steepest descent interval, therefore achieving a quantitative analysis of the dual fuel engine speed characteristics.

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