‫مهندسی‬ ‫مکانیک‬ ‫مدرس‬ : ‫ٍاطگاى‬ ‫کلیذ‬ ُ‫چٌذهتغیش‬ ‫خطی‬ ‫سگشسیَى‬ ‫اگضٍص‬ ‫دٍد‬ ‫کذسی‬ ‫گطتاٍس‬ ‫سَخت‬ ‫هصشف‬ ‫دیضل‬ ‫هَتَس‬ Multiple linear regression analysis of some important performance parameters of a conventional diesel engine in different working conditions ARTICLE INFORMATION ABSTRACT

Majid Vandechali, Mohammad Hossein Abbaspour-Fard, Abbas Rohani
2017 Modares Mechanical Engineering   unpublished
Nowadays, the world is faced with increasing loss of fossil resources, energy crisis and environmental problems. On the other hand, diesel engines due to wide application in various sectors such as transport, agriculture, industry, etc., are the main sources of emissions and fuel consumption. Accurate measurement of fuel consumption and engine pollution is time-consuming and costly. Hence, the main objective of this study was to develop proper linear regression models of some important
more » ... ce parameters of ITM285 tractor engine based on engine torque and engine speed. Experiments were carried out in 11 levels of primary engine speed and 2054 rpm) by 10 Nm steps of torque from zero (no load) to full load. The measured parameters include fuel consumption mass flow, exhaust temperature, instantaneous engine speed, maximum and mean exhaust opacities. Four different linear regression models were used to estimate the parameters. The results of regression models performance evaluation showed that quadratic model had the highest efficiency and the lowest RMSE for all parameters. The maximum and minimum effects of engine torque were on exhaust temperature and instantaneous engine speed, respectively; while this result was completely reverse for primary engine speed. The results of regression models evaluation showed a high adaptation between the output of each model and the desired output. Also, the fuel mass flow and exhaust temperature were highly correlated to the maximum and mean exhaust opacity with correlation coefficients of 0.96 and 0.99, respectively.-1 ‫مقذمه‬ ٝٞ‫ز‬ ‫زض‬ ‫ٚضؼیت‬ ٖ‫خٟب‬ ،‫اذیط‬ ‫ٞبی‬ ٜ‫پطٔربعط‬ ‫ؾٛذت‬ ‫ٔهطف‬ ‫ِحبػ‬ ‫اظ‬ ‫ضا‬ ‫ای‬ ‫ٞبی‬ َ‫شغب‬ ،‫٘فت‬ ‫٘ظیط‬ ‫فؿیّی‬ ٜ‫وطز‬ ٝ‫تدطث‬ ‫ضا‬ ٜ‫غیط‬ ٚ َ‫زیع‬ ‫ؾٛذت‬ ،ٗ‫ثٙعی‬ ،ًٙ‫ؾ‬ ٝ‫ث‬ ‫اؾت؛‬ ٝ‫و‬ ‫عٛضی‬ 80 ‫فؿیّی‬ ‫ٔٙبثغ‬ ٗ‫ٕٞی‬ ‫عطیك‬ ‫اظ‬ ٖ‫خٟب‬ ‫ا٘طغی‬ ‫٘یبظ‬ ‫زضنس‬ ‫یک‬ ‫مهم‬ ‫عملکردی‬ ‫پارامترهای‬ ‫برخی‬ ‫چنذمتغیره‬ ‫خطی‬ ‫رگرسیون‬ ‫تحلیل‬ ‫مختلف‬ ‫کاری‬ ‫شرایط‬ ‫در‬ ‫متذاول‬ ‫دیزل‬ ‫موتور‬ ‫ونذچالی‬ ‫رجبی‬ ‫مجیذ‬ ‫و‬ ‫همکاران‬ 462 ‫مرداد‬ ،‫مدرس‬ ‫مکانیک‬ ‫مهندسی‬ 6496 ‫دوره‬ ، 67 ‫شماره‬ ، 5 ‫یک‬ ‫مهم‬ ‫عملکردی‬ ‫پارامترهای‬ ‫برخی‬ ‫چنذمتغیره‬ ‫خطی‬ ‫رگرسیون‬ ‫تحلیل‬ ‫مختلف‬ ‫کاری‬ ‫شرایط‬ ‫در‬ ‫متذاول‬ ‫دیزل‬ ‫موتور‬ ‫ونذچالی‬ ‫رجبی‬ ‫مجیذ‬ ‫و‬ ‫همکاران‬ 466 ‫مرداد‬ ،‫مدرس‬ ‫مکانیک‬ ‫مهندسی‬ 6496 ‫دوره‬ ، 67 ‫شماره‬ ، 5 ‫یک‬ ‫مهم‬ ‫عملکردی‬ ‫پارامترهای‬ ‫برخی‬ ‫چنذمتغیره‬ ‫خطی‬ ‫رگرسیون‬ ‫تحلیل‬ ‫مختلف‬ ‫کاری‬ ‫شرایط‬ ‫در‬ ‫متذاول‬ ‫دیزل‬ ‫موتور‬ ‫ونذچالی‬ ‫رجبی‬ ‫مجیذ‬ ‫و‬ ‫همکاران‬ 468 ‫مرداد‬ ،‫مدرس‬ ‫مکانیک‬ ‫مهندسی‬ 6496 ‫دوره‬ ، 67 ‫شماره‬ ، 5 ‫یک‬ ‫مهم‬ ‫عملکردی‬ ‫پارامترهای‬ ‫برخی‬ ‫چنذمتغیره‬ ‫خطی‬ ‫رگرسیون‬ ‫تحلیل‬ ‫مختلف‬ ‫کاری‬ ‫شرایط‬ ‫در‬ ‫متذاول‬ ‫دیزل‬ ‫موتور‬ ‫ونذچالی‬ ‫رجبی‬ ‫مجیذ‬ ‫و‬ ‫همکاران‬ 473 ‫مرداد‬ ،‫مدرس‬ ‫مکانیک‬ ‫مهندسی‬ 6496 ‫دوره‬ ، 67 ‫شماره‬ ، 5 ‫یک‬ ‫مهم‬ ‫عملکردی‬ ‫پارامترهای‬ ‫برخی‬ ‫چنذمتغیره‬ ‫خطی‬ ‫رگرسیون‬ ‫تحلیل‬ ‫مختلف‬ ‫کاری‬ ‫شرایط‬ ‫در‬ ‫متذاول‬ ‫دیزل‬ ‫موتور‬ ‫ونذچالی‬ ‫رجبی‬ ‫مجیذ‬ ‫و‬ ‫همکاران‬ 474 ‫مرداد‬ ،‫مدرس‬ ‫مکانیک‬ ‫مهندسی‬ 6496 ‫دوره‬ ، 67 ‫شماره‬ ، 5 ‫مختلف‬ ‫کاری‬ ‫شرایط‬ ‫در‬ ‫متذاول‬ ‫دیزل‬ ‫موتور‬ ‫یک‬ ‫مهم‬ ‫عملکردی‬ ‫پارامترهای‬ ‫برخی‬ ‫چنذمتغیره‬ ‫خطی‬ ‫رگرسیون‬ ‫تحلیل‬ ‫ونذچالی‬ ‫رجبی‬ ‫مجیذ‬ ‫و‬ ‫همکاران‬ ‫مرداد‬ ،‫مدرس‬ ‫مکانیک‬ ‫مهندسی‬ 6496 ‫دوره‬ ، 67 ‫شماره‬ ، 5
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