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The method of determining the critical case expressing the possibility and validity of the continuation of the Internal combustion engines operating under normal conditions

طريقة تحديد الحالة الحدّية المعبّرة عن إمكانية و صلاحية استمرار محركات الاحتراق الداخلي بالعمل ضمن الشروط الطبيعية

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 Publication date 2018
  fields Mechatronics
and research's language is العربية
 Created by Shamra Editor




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The research focuses on finding planning methods based on measuring and monitoring the basic indicators of internal combustion engines (Diesel engines) in order to determine the critical case of the engines, which determines the expected time for the engine or for some of its basic parts to be sent for comprehensive maintenance. The wear ratio of one of the basic components of the engine was also determined, we also chose the diameter of the cylinder and the corrosion that happens to it in order to determine the engine's lifetime and determine the moment when the engine should be sent for comprehensive maintenance. By observing a large number of engines put in repair in the industrial area in Lattakia, which are 30 engines of different types of diesel and gasoline, and with different capacities, it was noticed that about 15% of these engines were not exploited and invested the entire work period designed for them. Also it was noticed that 20% of them have stopped working because of the severe corrosion of parts, components and mechanics of these engines, which led to their damage and their inability to do their work on a regular basis. This has contributed to increased consumption of fuel and Lubricating materials, which causes damage to the national economy. The proposed planning method for determining the critical case of the engine when comparing the schematic results with the practical results of the engines has proved its efficiency and accuracy with an error rate of no more than 6% This allows it to be applied and adopted as an effective way to determine the actual lifetime of the engine and compare it with the life time of investing the engine mentioned in the manufacturer's catalogs when operating the engine under normal conditions.


Artificial intelligence review:
Research summary
ركز البحث على تطوير طريقة تخطيطية تعتمد على قياس ومراقبة المؤشرات الأساسية لمحركات الاحتراق الداخلي (محركات الديزل) لتحديد الحالة الحدية لعمل المحركات. الهدف من هذه الطريقة هو تحديد الزمن المتوقع لإرسال المحرك للصيانة الشاملة أو لبعض أجزائه الأساسية. تم اختيار قطر الاسطوانة كمؤشر للاهتراء لتحديد العمر الزمني للمحرك. من خلال مراقبة 30 محركًا في المنطقة الصناعية بمدينة اللاذقية، تبين أن 15% منها لم تستغل كامل مدة العمل المصممة لها، وأن 20% توقفت عن العمل بسبب الاهتراء الشديد. أثبتت الطريقة التخطيطية فعاليتها بدقة تصل إلى نسبة خطأ لا تتجاوز 6%. تعتمد الطريقة على مراقبة التغيرات في المؤشرات الاقتصادية والقدروية والبيئية للمحرك لتحديد اللحظة المناسبة للصيانة. الهدف من البحث هو تقليل التكاليف المادية والأضرار الناتجة عن عمليات الفك والتركيب المتكررة للمحرك.
Critical review
دراسة نقدية: البحث قدم طريقة مبتكرة وفعالة لتحديد الحالة الحدية لمحركات الاحتراق الداخلي، مما يساهم في تحسين كفاءة الصيانة وتقليل التكاليف. ومع ذلك، يمكن أن تكون الطريقة التخطيطية معقدة وتتطلب أدوات ومعدات متقدمة قد لا تكون متاحة في جميع الورش. كما أن الاعتماد على قطر الاسطوانة كمؤشر وحيد للاهتراء قد يكون محدودًا، حيث يمكن أن تتأثر أجزاء أخرى من المحرك بشكل كبير أيضًا. يفضل أن يتم دمج مؤشرات إضافية لزيادة دقة التقييم. علاوة على ذلك، يجب أن يتم اختبار الطريقة على نطاق أوسع من المحركات وفي ظروف تشغيل مختلفة للتحقق من موثوقيتها وفعاليتها في جميع الحالات.
Questions related to the research
  1. ما الهدف الرئيسي من البحث؟

    الهدف الرئيسي هو تطوير طريقة تخطيطية لتحديد الحالة الحدية لمحركات الاحتراق الداخلي لتحديد الزمن المناسب لإرسال المحرك للصيانة الشاملة أو لبعض أجزائه الأساسية.

  2. ما المؤشر الذي تم اختياره لتحديد الاهتراء في المحرك؟

    تم اختيار قطر الاسطوانة كمؤشر للاهتراء لتحديد العمر الزمني للمحرك.

  3. ما نسبة الخطأ في الطريقة التخطيطية المقترحة؟

    نسبة الخطأ في الطريقة التخطيطية المقترحة لا تتجاوز 6%.

  4. ما الفائدة الاقتصادية من استخدام الطريقة التخطيطية المقترحة؟

    الفائدة الاقتصادية تتضمن تقليل التكاليف المادية الناتجة عن عمليات الفك والتركيب المتكررة، وتقليل استهلاك الوقود ومواد التزييت، مما يساهم في الحفاظ على الاقتصاد الوطني.


References used
PROF. ROLF D. REITZ. Internal Combustion Engines, Fundamentals and Performance Metrics. Engine Research Center- University of Wisconsin-Madison; 2018 Princeton-Combustion Institute
SANDRA L. BELL. Internal Combustion Piston Engines. U.S. Customs and border Protection; April 2012
Turesson, Gabriel. Model-Based Optimization of Combustion-Engine Control Department of Automatic Control. Lund Institute of Technology, Lund University 2018
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