Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 31, No. 5 (May 2018) 856-862    Article in Press

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  ESTIMATE THE PERFORMANCE OF CATALYTIC CONVERTER USING TURBULENCE INDUCE DEVICES
 
M. Bhandwal, R. K. Tyagi and B. S. Sikarwar
 
( Received: January 05, 2017 – Accepted in Revised Form: February 27, 2018 )
 
 

Abstract    In this manuscript, the experimental setup was designed and fabricated for optimizing the parameters of a catalytic converter of INDICA V2 exhaust system. Three turbulence intensify devices, namely Swirl Venturi, Swirl Blades and Swirl Contour, were close-fitted before the catalytic converter. The heating element is embedded in its body and thermocouples are used for knowing the performance at various temperature. The experiments were carried out with and without devices also with and without heating of catalytic converter. The emission was characterized by various engine speed. The results showed that catalytic converter effectiveness and efficiency increases when close-fitted the devices before the catalytic converter with heating. Among these devices, Swirl Blades was more effective and it reduces the CO and HC emission by 33.86%, and by 30.56% respectively. Flow Simulation of these devices was carried out using finite volume method. The obtained simulation shows that transport coefficient of catalytic converter enhances using these devices because of high turbulence intensity at the inlet of the catalytic converter. This research concluded that the heating of the catalytic converter and using the Swirl Blades device before it reduces the air pollution significantly of diesel engine motor vehicle.

 

Keywords    Air Pollution; Catalytic Converter; Gas Emission; Turbulency, CFD, Simulation

 

چکیده    در این مقاله برای بهینه سازی مبدل کاتالیستی سیستم اگزوز دستگاه آزمایشگاهی طراحی و ساخته شد. سه دستگاه نشان دهنده آشفتگی جریان به ترتیب سورل وانچوری، سورل پره ای و کنتوری که کاملا مناسب با سیستم بوده نصب گردید. المانت حرارتی و ترموکوپل در بدنه مبدل جا سازی شده که کارایی دمای سیستم را نشان دهد. آزمایش ها با المانت و بدون المانت حرارتی انجام گردید. مختصات نشر گازهای احتراق در اگزوز با سرعت متفاوت موتور تعین گردید. نتایج نشان میدهد که موثربودن و بازدهی فزاینده مبدل کاتالیستی در حالتی که مبدل حرارت دیده است کاملا مناسب بود. در میان سه نوع مبدل کاتلیستی نوع مبدل پره ای بسیار موثر عملکرد داشته که میزان نشر گاز کربن منواکید و گاز انتشار یافته هیدروکربوری به ترتیب به میزان 33 و 30 درصد کاهش یافته است. شبیه سازی جریان در این مبدل ها بروش آنالیز اجزاء محدود صورت گرفته است. نتایج شبیه سازی در توسعه و کارایی مبدل موثر بوده و با استفاده ازاین دستگاهها شدت آشفتگی جریان در هوای آلوده ورودی قابل ملاحظه بوده است. این تحقیق مبدل کاتالیستی حرارتی را بررسی می نماید. استفاده از مبدل کاتالیستی با پره سورل موجب کاهش قابل ملاحظه ای در الودگی موتور دیزلی می گردد.

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