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Full-Text Articles in Mechanical Engineering
Effect Of Air-Fuel Ratio On The Combustion Characteristics Of Syngas (H2:Co) In Direct-Injection Spark-Ignition Engine, Ftwi Yohaness Hagos, A. Rahsid Abd Aziz, Shaharin A. Sulaiman
Effect Of Air-Fuel Ratio On The Combustion Characteristics Of Syngas (H2:Co) In Direct-Injection Spark-Ignition Engine, Ftwi Yohaness Hagos, A. Rahsid Abd Aziz, Shaharin A. Sulaiman
Ftwi Yohaness Hagos
This paper presents experimental results of the effect of air-fuel ratio on the combustion characteristics of a direct-injection spark-ignition engine fuelled with a syngas of H2/CO composition of equal molar ratio. The engine was operated at fully open throttle and the start of fuel injection (SOI) was set at 180obefore top dead center (BTDC). The spark advance was set to the minimum advance for a maximum brake torque. The experiment was conducted at lean mixture conditions with engine speed ranging from 1500 to 2400 rev/min. The results show that syngas operated under wider operation excess air ratio (λ) as compared …
Trends Of Syngas As A Fuel In Internal Combustion Engines, Ftwi Yohaness Hagos, A. Rahsid Abd Aziz, Shaharin A. Sulaiman
Trends Of Syngas As A Fuel In Internal Combustion Engines, Ftwi Yohaness Hagos, A. Rahsid Abd Aziz, Shaharin A. Sulaiman
Ftwi Yohaness Hagos
Syngas from biomass and solid waste is a carbon-neutral fuel believed to be a promising fuel for future engines. It was widely used for spark-ignition engines in the WWII era before being replaced with gasoline. In this paper, the technological development, success, and challenges for application of syngas in power generating plants, the trends of engine technologies, and the potential of this fuel in the current engine technology are highlighted. Products of gasification vary with the variation of input parameters. Therefore, three different syngases selected from the two major gasification product categories are used as case studies. Their fuel properties …
Current Trends In Water-In-Diesel Emulsion As A Fuel, Mohammed Yahaya Khan, Zainal Ambri Abdul Karim, Ftwi Yohaness Hagos, Isa Mohd Tan, A. Rashid Abd Aziz
Current Trends In Water-In-Diesel Emulsion As A Fuel, Mohammed Yahaya Khan, Zainal Ambri Abdul Karim, Ftwi Yohaness Hagos, Isa Mohd Tan, A. Rashid Abd Aziz
Ftwi Yohaness Hagos
Water-in-diesel emulsion (WiDE) is an alternative fuel for CI engines that can be employed with the existing engine setup with no additional engine retrofitting. It has benefits of simultaneous reduction of both NO x and particulate matters in addition to its impact in the combustion efficiency improvement, although this needs further investigation. This review paper addresses the type of emulsion, the microexplosion phenomenon, emulsion stability and physiochemical improvement, and effect of water content on the combustion and emissions of WiDE fuel. The review also covers the recent experimental methodologies used in the investigation of WiDE for both transport and stationary …