طرق محاكاة دارة عمل محرّك الاحتراق الداخلي بهدف تطويره

Authors

  • نبيل غدير

Abstract

تلعب عملية محاكاة ونمذجة دارة عمل محرك الاحتراق الداخلي دوراً كبيراً في تطوير المحركات, وتحسين مواصفاتها وأدائها, وملاءمتها لشروط التشغيل المختلفة . وهي توفر جهداً تجريبياً كبيراً رغم أنها لا تغني عنه ، فهي تشكل الخطوة الأولى لمهندس التصميم والتطوير, للتحقق من مواصفات المحرك الجديد وأدائه بأقصر وقت ممكن .

يبين البحث كيفية إجراء محاكاة دارة عمل محرك رباعي الأشواط ذي أربع أسطوانات, مع تشحين عنفي ، وتظهر النتائج تأثر أداء المحرك بتغير ظروف التشغيل . فقد أمكن ,عن طريق المحاكاة وباستخدام الحاسب ,حساب منحني انتقال الحرارة من حجرة الاحتراق إلى الجدران الداخلية للأسطوانة حسب قوشني, وكذلك منحني معدل إطلاق الحرارة إضافة إلى تحديد تأثير لحظة بداية الاحتراق في كلٍّ من المردود الحراري الدليلي ,ودرجة حرارة غازات العادم ,والضغط الأعظمي داخل الاسطوانة, وكذلك تأثير فترة تطابق الصمامات في الاستهلاك النوعي الفعلي للوقود ,وللهواء ,وفي  نسبة الهواء للوقود ,وفي تغير درجة حرارة غازات العادم .

The Simulation of Internal Combustion Engine Cycle plays a big role in developing  engines and adapting them to different working conditions. This method spares a lot of experiments, but it is not enough alone. Also, it is the first step for the engine development engineer to test the performance of the new engine quickly.

This paper deals  with the Simulation of the cycle of a four-stroke engine with four cylinders using turbocharger. The results show the influence of operation condition on the engine performance. Heat release curve and heat transfer from working gas to cylinder walls were calculated. In addition, the influence of start of Combustion on engine Operation; thermal efficiency (); exhaust gas temperature (Tex) and maximum cylinder pressure () were indicated. Also the paper shows the effect of valve overlap period on the specific consumption of fuel and air (,); air-fuel equivalence ratio (l) and exhaust gas temperature change ().

Downloads

Published

2019-02-20

How to Cite

1.
غدير ن. طرق محاكاة دارة عمل محرّك الاحتراق الداخلي بهدف تطويره. Tuj-eng [Internet]. 2019Feb.20 [cited 2024Nov.24];23(1). Available from: https://journal.tishreen.edu.sy/index.php/engscnc/article/view/8287

Issue

Vol. 23 No. 1 (2001): العلوم الهندسية

Section

Articles

License

Copyright (c) 2019 ttps://creativecommons.org/licenses/by-nc-sa/4.0/

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series

 Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in  Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series   .  The Readers have the right to send, print and subscribe to the initial version of the article, and the title of  Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series     Publisher

journal uses a CC BY-NC-SA license which mean

You are free to:

  • Adapt — remix, transform, and build upon the material
  •  
  • The licensor cannot revoke these freedoms as long as you follow the license terms.

 

  • Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • NonCommercial — You may not use the material for commercial purposes.
  • ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
  • No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.