کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
645382 1457139 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Exhaust gas recirculation dispersion analysis using in-cylinder pressure measurements in automotive diesel engines
ترجمه فارسی عنوان
تجزیه و تحلیل پراکندگی تجدید جریان گاز با استفاده از اندازه گیری فشار داخل سیلندر در موتورهای دیزل خودرو
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Current diesel engines are struggling to achieve exhaust emissions regulations margins, in certain cases penalizing the fuel consumption. The exhaust gas recirculation (EGR) continues to be employed as a technique to reduce NOx emissions. EGR dispersion between cylinders is one important issue when a high pressure (HP) loop is used. Different techniques have been developed in order to analyze the EGR dispersion between cylinders in an engine test bench. In this paper a methodology using the in-cylinder pressure was developed. The in-cylinder pressure was used to calculate a heat release law and combustion parameters that were used to analyze the EGR dispersion between cylinders. Engine test measurements at three different engine speeds and with three different HP-EGR configurations were performed in order to assess the developed analysis methodology. NOx emissions and fuel consumption were also compared between the different HP-EGR configurations to complete the analysis. The developed methodology was successfully used in three different operating conditions for three different HP-EGR configurations, showing the relation between the decrease in EGR dispersion between cylinders and the decrease in NOx emissions, while maintaining and, in some points, improving the fuel consumption.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 89, 5 October 2015, Pages 459-468
نویسندگان
, , , , , , ,