نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Investigation of 3-D flow behavior into Internal Combustion Engines is always of designers’ interests. Due to refine designs, using CFD models makes designs towards a real evaluation. A 3-D CFD model was developed to study effects of early intake valve opening on the flow field characteristics in the intake manifold of a domestically-produced spark-ignited gasoline 1.5 liter, 4-cylinders engine, TIBA (manufactured by MEGA motor Co.). The performance of the model was validated against experimental results of the engine obtained from the flow bench of the company. Investigation of EIVO/EIVC strategies has been done first time in Iran with 3D simulation for the National Engine. The results of implementing these strategies on valve events show that the average of intake manifold pressure has direct relation with the amount of throttle opening. Also the average of intake manifold pressure has reverse relation with engine speed. In addition, with considering of early intake valve opening (EIVO) and early intake valve closing (EIVC), the volumetric efficiency will be increased in higher engine speed.
کلیدواژهها [English]
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