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فصلنامه علمی کارافن

بررسی آزمایشگاهی و تحلیل عملکرد موتور دیزل با سوخت بیودیزل در وضعیت ربع دریچه گاز

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسندگان
گروه مهندسی مکانیک، واحد بندرانزلی، دانشگاه آزاد اسلامی، بندرانزلی، ایران
چکیده
در این تحقیق بررسی آزمایشگاهی، عملکرد و تعیین بهینه‌ی پارامترهای عملکردی یک موتور تحقیقاتی چهارزمانه‌ی دیزل با مخلوط سوخت دیزل و بیودیزل انجام‌شده است. در این راستا مخلوط‌های حجمی مختلف سوخت دیزل و بیودیزل (B0, B20, B40, B60, B80) توسط یک لگام ترمز الکتریکی در درصدهای بار مختلف و در موقعیت دریچه‌ی گاز موتور تحت آزمایش در وضعیت 4/1 کورس حرکتی خود ثابت‌شده و تحت بارهای 0، 25، 50، 75 و 100 درصد لگام ترمز مورد آزمایش قرارگرفته است سپس متغیرهای عملکردی موتور در اثر اعمال این بارها در دورهای 1535، 1500، 1450، 1400 و 1250 مورد ارزیابی قرار می‌گیرند. در نتیجه با استفاده از ابزارهای مختلف اندازه‌گیری، نمودارهای عملکردی مختلف موتور شامل راندمان حجمی، مصرف ویژه‌ی سوخت، آهنگ مصرف سوخت، راندمان حرارتی، نسبت هوا به سوخت، قدرت ترمزی، گشتاور ترمزی، آهنگ مصرف هوا و همچنین گازهای آلایندهی خروجی از موتور اندازه‌گیری شد. در ادامه تحلیل عملکرد موتور بر اساس نتایج آزمایشگاهی به‌دست‌آمده و نمودارهای مختلف بررسی‌شده‌اند. ورود‌‌ی‌های در نظر گرفته‌شده شامل درصد حجمی مخلوط سوخت، دور موتور و درصد بار موتور و خروجی آن شامل پارامترهای عملکردی موتور و ایندکس آلایندگی هستند. با تحلیل نمودارهای عملکردی، مخلوط سوخت B40 دربارهای مختلف لگام ترمز دارای کمترین مصرف ویژه‌ی سوخت ترمزی و آلایندگی است. بنابراین ازنظر اقتصادی، و کاهش مصرف سوخت و کاهش آلایندگی نسبت به بقیه‌ی مخلوط‌های سوخت برتری داشته و استفاده از آن توصیه می‌شود.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

In-vitro study and analysis of performance of diesel engines using biodiesel at a quarter throttle

نویسندگان English

Esmail Haghgoo
Mohammad Salehpour
Ali Alijani
Admin Kazemi
Department of mechanical Engineering, Bandar Anzali Branch, Islamic Azad University, Bandar Anzali, Iran
چکیده English

This study (in-vitro study) has revealed the analysis of the performance criteria of a four-stroke diesel research engine using different blends of diesel and biodiesel. In this way, different volumetric mixtures of diesel and biodiesel (B0, B20, B40, B60, and B80) have been appraised by an electric brake lever for several load percentages. The engine has been tested under different loads (0%, 25%, 50%, 75%, and 100% of the electric brake lever's capacity) and engine speeds (1250, 1400, 1450, 1500, and 1535 revolutions per minute) with a fixed throttle position. Thereafter, by utilizing different measurement tools, some important outputs have been drawn such as various performance plots of the engine containing, volumetric efficiency, specific fuel consumption (SFC), rate of fuel consumption, thermal efficiency, air-fuel ratio, braking power, braking torque, rate of air consumption and pollutant gases emitting from the engine. Afterwards, the performance investigation of the engine considering the laboratory results and various graphs have been assessed. It is worth mentioning that inputs’ parameters are, namely, volume percentage of fuel mixture, engine speed and engine load percentage, and the output, engine performance parameters and air quality index. As exhibited, amongst the aforesaid blends, B40 has the least amount of SFC and air quality index at different brake lever loads. Consequently, it can be suggested that B40 may be a more economical and environmentally friendly alternative for real-world usage.

کلیدواژه‌ها English

Diesel engine
Biodiesel
Pollution
Vegetable oil waste
electric brake lever
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دوره 22، شماره 3
فنی و مهندسی
پاییز 1404
صفحه 123-143

  • تاریخ دریافت 04 تیر 1403
  • تاریخ بازنگری 14 شهریور 1403
  • تاریخ پذیرش 30 مهر 1403