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Articles 1 - 6 of 6
Full-Text Articles in Automotive 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 …
Engine Combustion, Performance And Emission Characteristics Of Gas To Liquid (Gtl) Fuels And Its Blends With Diesel And Bio-Diesel, Mahendra Varman Munusamy M. Varman
Engine Combustion, Performance And Emission Characteristics Of Gas To Liquid (Gtl) Fuels And Its Blends With Diesel And Bio-Diesel, Mahendra Varman Munusamy M. Varman
Mahendra Varman Munusamy (M. Varman)
Crude oil price hikes, energy security concerns and environmental drivers have turned the focus on alternative fuels. Gas to liquid (GTL) diesel is regarded as a promising alternative diesel fuel, considering the adeptness to use directly as a diesel fuel or in blends with petroleumderived diesel or bio-diesel. GTL fuel derived from Fischer-Tropsch synthesis is of distinctly different characteristics than fossil diesel fuel due to its paraffinic nature, virtually zero sulfur, low aromatic contents and very high cetane number. GTL fuel is referred to as a “clean fuel” for its inherent ability to reduce engine exhaust emission even with blends …
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 …
Modeling A Severe Supply Chain Disruption And Post-Disaster Decision Making With Application To The Japanese Earthquake And Tsunami, Cameron A. Mackenzie, Kash Barker, Joost R. Santos
Modeling A Severe Supply Chain Disruption And Post-Disaster Decision Making With Application To The Japanese Earthquake And Tsunami, Cameron A. Mackenzie, Kash Barker, Joost R. Santos
Cameron A. MacKenzie
Modern supply chains are increasingly vulnerable to disruptions, and a disruption in one part of the world can cause supply difficulties for companies around the globe. This article develops a model of severe supply chain disruptions in which several suppliers suffer from disabled production facilities and firms that purchase goods from those suppliers may consequently suffer a supply shortage. Suppliers and firms can choose disruption management strategies to maintain operations. A supplier with a disabled facility may choose to move production to an alternate facility, and a firm encountering a supply shortage may be able to use inventory or buy …
Comparison Of An Analytical Hierarchy Process And Fuzzy Axiomatic Design For Selecting Appropriate Photovoltaic Modules For Onboard Vehicle Design, Mahmoud M. Abdelhamid
Comparison Of An Analytical Hierarchy Process And Fuzzy Axiomatic Design For Selecting Appropriate Photovoltaic Modules For Onboard Vehicle Design, Mahmoud M. Abdelhamid
Mahmoud M Abdelhamid
In this paper, the authors present an overview of the available commercial photovoltaic (PV) module options for powering onboard vehicle applications. The authors used two decision-making methodologies to determine the evaluation factors and the decision-making criteria necessary for assessing the suitability of a particular PV module type. In both the analytical hierarchy process (AHP) and the fuzzy axiomatic design (AD), the authors used at the input stage quality function deployment (QFD) to determine customer requirements for a vehicle with PV module capabilities. This approach is innovative in that evaluation depended upon data collected from PV manufacturers’ datasheets. This approach is …