Downsizing Iranian National Engine (EF7): Conceptual Design
Publish place: 11th International Conference on Internal Combustion Engines
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICICE11_083
تاریخ نمایه سازی: 6 خرداد 1399
Abstract:
Engine Downsizing has been considered as a promising approach to reduce the CO2 emission of internal combustion engines since the long term goal of International Energy Agency was published in 2011. The dimension of engines are declined while their performance are preserved in this approach. So, the fuel consumption and engine emission decrease as well as its power to weight ratio increases. In this study, the Iranian national engine called EF7 is considered as the target of downsizing and 3 conceptual designs of downsized EF7 are proposed. The concepts are called EF7 α , EF7 β , and EF7 γ which fueled by Gasoline and Compressed Natural Gas. The performance of each concept is investigated and compared with the base engine employing one dimension engine simulation tools after validating the simulator results by experimental data. The results show the well agreement of simulated results and experimental data as the first step of this research. Indeed, the performance of the gasoline fueled version of downsized EF7, EF7 α, is estimated close to the base engine. The poor performance of engine especially in low load regions due to the fuel shifting to the Compressed Natural Gas is estimated to be well covered by modification of ignition timing at EF7 β and it will be developed by increasing the compression ratio which is called in this research by EF7 γ.
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Authors
Mohammad Mostafa Namar
PhD Candidate, Mechanical Engineering Department, Babol Noshirvani University of Technology
Omid Jahanian
Associate Professor, Mechanical Engineering Department, Babol Noshirvani University of Technology
Rouzbeh Shafaghat
Associate Professor, Mechanical Engineering Department, Babol Noshirvani University of Technology
Kamyar Nikzadfar
Associate Professor, Mechanical Engineering Department, Babol Noshirvani University of Technology