Izvorni znanstveni članak
Mathematical optimization of variable valve timing for reducing fuel consumption of A SI engine
Amir-Hasan Kakaee
; School of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran
Mehdi Keshavarz
; School of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran
Amin Paykani
; School of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran
Mohaamad Keshavarz
; Department of Mechanical Engineering, Arsanjan Branch, Islamic Azad University, Arsanjan, Iran
Sažetak
In this study, the sensitivity analysis and Quasi-Newton algorithms are used to optimize valve timing XU7/L3 engine in order to reduce fuel consumption and increase engine performance. At first, all components of engine are modeled in GT-POWER and a comparison with experimental results is performed to confirm the accuracy of the model. Then, GT-POWER model is coupled with MATLAB-SIMULINK to control inputs and outputs with sensitivity analysis and Quasi-Newton algorithms. The results obtained indicate that optimal valve timing significantly reduces brake specific fuel consumption (BSFC). Moreover, the convergence rate of Quasi-Newton algorithm for reaching the optimal point is higher than the one of sensitivity analysis algorithm.
Ključne riječi
sensitivity analysis; valves timing; gt-power; matlab-simulink
Hrčak ID:
151842
URI
Datum izdavanja:
27.1.2016.
Posjeta: 1.610 *