Numerical Study on the Performance Characteristics of Hydrogen Fueled Port Injection Internal Combustion Engine

Abstract

This study was focused on the engine performance of single cylinder hydrogen fueled port injection internal combustion engine. GT-Power was utilized to develop the model for port injection engine. One dimensional gas dynamics was represented the flow and heat transfer in the components of the engine model. The governing equations were introduced first, followed by the performance parameters and model description. Air-fuel ratio was varied from stoichiometric limit to a lean limit and the rotational speed varied from 2500 to 4500 rpm while the injector location was considered fixed in the midway of the intake port. The effects of air fuel ratio, crank angle and engine speed are presented in this study. From the acquired results show that the air-fuel ratio and engine speed were greatly influence on the performance of hydrogen fueled engine. It was shown that decreases the Brake Mean Effective Pressure (BMEP) and brake thermal efficiency with increases of the engine speed and air-fuel ratio however the increase the Brake Specific Fuel Consumption (BSFC) with increases the speed and air-fuel ratio. The cylinder temperature increases with increases of engine speed however temperature decreases with increases of air-fuel ratio. The pressure fluctuations increased substantially with increases of speed at intake port however rise of pressure at the end of the exhaust stroke lead to reverse flow into the cylinder past exhaust valve. The fluctuation amplitude responded to the engine speed in case of exhaust pressure were given less than the intake pressure. The volumetric efficiency increased with increases of engine speed and equivalent ratio. The volumetric efficiency of the hydrogen engines with port injection is a serious problem and reduces the overall performance of the engine. This emphasized the ability of retrofitting the traditional engines with hydrogen fuel with minor modifications.

Experimental investigation of the effect of spark plug gap on a hydrogen fueled SI engine

“…This sharp decrease happens because higher speed is accompanied by some phenomena that have a negative effect on efficiency. These phenomena include charge heating in the manifold and higher friction flow losses which increase as the square of engine speed [38].…”

About Boeing X-32

“…The program has produced many advances in stealth technology and in designing and manufacturing methods. These achievements have been applied to other Boeing programs, including the F/A- Abbas, 2009;Abu-Ein, 2009;Opafunso et al, 2009;Semin et al, 2009a-c;Zulkifli et al, 2009;Ab-Rahman et al, 2009;Abdullah and Halim, 2009;Zotos and Costopoulos, 2009;Feraga et al, 2009;Bakar et al, 2009;Cardu et al, 2009;Bolonkin, 2009a-b;Nandhakumar et al, 2009;Odeh et al, 2009;Lubis et al, 2009;Fathallah and Bakar, 2009;Marghany and Hashim, 2009;Kwon et al, 2010;Aly and Abuelnasr, 2010;Farahani et al, 2010;Ahmed et al, 2010;Kunanoppadon, 2010;Helmy and El-Taweel, 2010;Qutbodin, 2010;Pattanasethanon, 2010;Fen et al, 2011;Thongwan et al, 2011;Theansuwan and Triratanasirichai, 2011;Smadi, 2011;Tourab et al, 2011;Raptis et al, 2011;Momani et al, 2011;Ismail et al, 2011;Anizan et al, 2011;Tsolakis and Raptis, 2011;Abdullah et al, 2011;Kechiche et al, 2011;Ho et al, 2011;…”

Cycle analysis of in-cylinder heat transfer characteristics for hydrogen fueled engine

“…Consequently; concentration of the researches on the internal combustion engine application for this alternative fuel is logical and more beneficial. Hydrogen can be used as a clean alternative to petroleum fuels and its use as a vehicle fuel is promising in the effects to establish environmentally friendly mobility systems (Verhelst and Sierens, 2007;Bakar et al, 2009;Rahman et al, 2009a). Extensive studies were investigated on hydrogen fueled internal combustion engines (Drew et al, 2007;Mohammadi et al, 2007;Ganesh et al, 2008;Rahman et al, 2009 b, c).…”