Title : ( Optimal design and analysis of a novel variable-length intake manifold on a four-cylinder gasoline engine )
Authors: HamidrezaTalati , KarimAliakbari , Amir Ebrahimi-Moghadam , HamidKhoshbakht Farokhad , AlirezaEskandary Nasrabad ,Access to full-text not allowed by authors
Abstract
In this study, a novel variable-length intake manifold is designed to increase the volumetric efficiency of a four-cylinder gasoline engine. The proposed intake manifold is designed with four independent throttle bodies on its inlet duct, which are separately connected to the atmosphere. By opening and closing each one of these throttle bodies, a different length of the intake manifold is obtained. The novelty of this study lies in the fact that in addition to the variable-length system at each engine speed, it uses a different combination of opened throttle bodies to further increase volumetric efficiency. To demonstrate the efficiency of the novel design, a one-dimensional model of the Stock engine is developed using the GT-Power software in wide-open throttle steady-state condition and then validated with experimental results. Five vital criteria are defined for evaluating all of the thermo-fluid, heat, and mass transfer characteristics of the engine. The result of using the novel proposed design indicates that the volumetric efficiency, brake torque, brake specific fuel consumption, brake thermal efficiency, and heat release rate of the engine compared to the stock intake manifold were improved by 6.33%, 7.23%, 0.83%, 1.77%, and 11.79% respectively. Based on the obtained results, the best performance is achieved at 3500 rpm almost in all conditions. At this condition, the air and fuel mass flow rates and brake power are 0.0574 kg/s, 0.0041 kg/s, and 56.42 kW, respectively.
Keywords
, Internal combustion engine Variable, length manifold Volumetric efficiency Brake special fuel consumption Brake thermal efficiency Heat release rate@article{paperid:1087327,
author = {حمیدرضا طلاتی and کریم علی اکبری and Ebrahimi-Moghadam, Amir and HamidKhoshbakht Farokhad and AlirezaEskandary Nasrabad},
title = {Optimal design and analysis of a novel variable-length intake manifold on a four-cylinder gasoline engine},
journal = {Applied Thermal Engineering},
year = {2022},
volume = {200},
number = {1},
month = {January},
issn = {1359-4311},
pages = {117631--117639},
numpages = {8},
keywords = {Internal combustion engine
Variable-length manifold
Volumetric efficiency
Brake special fuel consumption
Brake thermal efficiency
Heat release rate},
}
%0 Journal Article
%T Optimal design and analysis of a novel variable-length intake manifold on a four-cylinder gasoline engine
%A حمیدرضا طلاتی
%A کریم علی اکبری
%A Ebrahimi-Moghadam, Amir
%A HamidKhoshbakht Farokhad
%A AlirezaEskandary Nasrabad
%J Applied Thermal Engineering
%@ 1359-4311
%D 2022