بررسی تأثیر میزان کارکرد فیلتر سوخت موتور بنزینی بر فشار سوخت و آوانس جرقه با استفاده از روش سطح پاسخ

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دپارتمان مهندسی مکانیک ماشین‌های کشاورزی، آموزشکده فنی کشاورزی شهریار، دانشگاه فنی و حرفه‌ای استان تهران، ایران

2 دپارتمان مهندسی مکانیک، آموزشکده فنی و حرفه‌ای پسران بروجن، دانشگاه فنی و حرفه‌ای استان چهارمحال و بختیاری، ایران

3 مهندسی مکانیک بیوسیستم دانشگاه تربیت مدرس، تهران، ایران

چکیده

در موتورهای احتراق داخلی، سامانه سوخت­رسانی یکی از دقیق­ترین و حساس­ترین بخش­های موتور است. در این تحقیق، با هدف بهبود پارامترهای احتراق و افزایش کارایی موتور، تأثیر میزان کارکرد فیلتر سوخت بر مشخصه­های موتور به‌صورت تجربی بررسی شد. پارامترهای اصلی مورد بررسی در این تحقیق، فشار سوخت در مدار سوخت­رسانی و آوانس جرقه بودند. سپس به کمک روش سطح پاسخ (RSM) تحلیل اثر متقابل متغیرها بر میزان آوانس جرقه موتور بررسی شد و یک سامانه هوشمند کنترل برای تعیین زمان مناسب تعویض فیلتر سوخت در یک موتور و اطلاع به کاربر طراحی گردید. بیشترین مقدار فشار ورودی فیلتر بنزین در مدار سوخت­رسانی در فیلتر دارای کارکرد  km50.000 به میزان bar 5/4 اندازه­گیری شد. همچنین کمترین مقدار فشار ورودی، در صورت استفاده از فیلتر نو، bar 5/3 اندازه­گیری شد. نتایج این تحقیق نشان داد که میزان کارکرد فیلتر سوخت بر پارامترهای اصلی موتور مانند نسبت وزنی اختلاط سوخت و هوا و آوانس جرقه نیز تأثیر قابل توجهی دارد. بررسی­ها در موتورهای Euro2 و Euro4 نشان داد که آوانس جرقه در دور موتور rpm 1.000 با فیلتر سوخت نو دارای مقدار 7 درجه است (کم­ترین مقدار)، در حالی که بیشینه آوانس جرقه در دور موتور rpm 5.000 و با فیلتر دارای کارکرد km 50.000 به میزان 37 درجه اندازه­گیری شد. نتایج نشان داد که گرفتگی فیلتر بنزین تأثیر قابل توجهی بر فشار سوخت، نسبت اختلاط سوخت به هوا و آوانس جرقه دارد که این عوامل تأثیر مستقیم در کیفیت احتراق و راندمان موتور خواهند داشت.

کلیدواژه‌ها


عنوان مقاله [English]

Investigating the Effect of Gasoline Fuel Filter Lifetime on Fuel Pressure and Ignition Advance Using the RSM Method

نویسندگان [English]

  • mani ghanbari 1
  • Lotfali Mozafari Vanani 2
  • Gholamhasan Najafi 3
1 Department of Mechanical Engineering of Agricultural Machinery, Faculty of Shahryar, Tehran Branch, Technical and Vocational University (TVU), Tehran, Iran
2 Department of Mechanical engineering, faculty of Borojen, Chaharmahal Bakhtiari Branch. Technical and Vocational University (TVU) Boroojen, Iran
3 Department of Mechanics of Biosystem Engineering, Agriculture Faculty, Tarbiat Modares University, Tehran, Iran
چکیده [English]

In internal combustion engines, the fuel system is one of the most accurate and sensitive parts of the engine. In this study, the effect of fuel filter lifetime on engine characteristics was examined experimentally. The main parameters examined in this study were fuel pressure and ignition advance. Then, using the response surface method (RSM), the interaction effect of the variables on the engine ignition advance was examined and a smart control system was designed to determine the appropriate time to change the fuel filter in an engine and inform the user. The maximum inlet pressure of the gasoline filter with a filter lifetime of 50,000 km was measured as 4.5 bar. Also, the lowest amount of inlet pressure, if using a new filter, was measured as 3.5 bar. The results of this study showed that the fuel filter lifetime also has a significant effect on the main parameters of the engine, such as the weight ratio of the fuel-to-air mixture and the ignition advance. Studies in Euro2 and Euro4 engines have shown that the ignition advance at 1,000 rpm engine speed with a new fuel filter was seven degrees (minimum value), while the maximum ignition advance at 5,000 rpm engine speed and with a 50,000 km filter lifetime was measured at 37 degrees. The results showed that gasoline filter clogging has a significant effect on fuel pressure, fuel-to-air mixing ratio, and ignition advance, which in turn will have a direct impact on combustion quality and engine efficiency.

کلیدواژه‌ها [English]

  • Gasoline engine
  • Fuel system
  • Fuel filter
  • Fuel pressure
  • Ignition Advance
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