Taib Iskandar MohamadUniversiti Teknologi PETRONAS | UTP · Department of Mechanical Engineering
Taib Iskandar Mohamad
BSc (Arizona), MEng (Vanderbilt), PhD (Cranfield)
Associate Professor - Combustion engines and solar energy
About
71
Publications
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Introduction
Associate Professor of Mechanical Engineering. Teaching and research interests in thermodynamics, thermal power systems, internal combustion engine alternative fuels and flow visualization. Over 15 years of experience in academia and sound experience in industry. Authored more than 80 technical publications.
Additional affiliations
August 2015 - March 2020
October 2010 - August 2011
January 2007 - February 2007
Florida Solar Energy Center
Position
- Researcher
Education
October 2002 - April 2006
August 1997 - May 1999
January 1994 - August 1996
Publications
Publications (71)
Due to world crude oil price hike in the recent years, many countries have experienced increase in gasoline price. In Malaysia, where gasoline are sold in two grades; RON95 and RON97, and fuel price are regulated by the government, gasoline price have been gradually increased since 2009. Price rise for RON97 is more significant. By 2014, its per li...
The influence of diesel enrichment with hydrogen and methane (H2/CH4) blend in a direct injection compression
ignition (DICI) engine were computationally studied. Numerical results by using ANSYS FLUENT
software are obtained for 40%, 50% and 60% diesel (by mass) with remaining fraction by various blend of
H2/CH4 (0%/100%, 30%/70%, 50%/50%, 70%/30%...
Blending hydrogen and methane with diesel in compression ignition engines has been proven to improve both performance and emissions. This work further explores the combustion characteristics and emissions of a direct injection compression ignition (DICI) engine fuelled with various blend ratios of hydrogen, methane and diesel with respect to varyin...
Many of the governments in the Middle East have overlooked recycling end-of-life vehicles (ELV) for far too long. This is probably because ELV activities are not in line with the governments' strategic short-term objectives. This research evaluates Gulf Cooperation Council (GCC)countries and selected countries in the Middle East such as Egypt and I...
Throttle body (TB) role in regulating air for internal combustion engine (ICE) is crucial and proven beneficiary for ICE performance. Researchers have shown interest in the study of TB which is reflected by the numbers of publication on TB. Between 2011 and 2021, seven review articles with keyword "throttle body" were published in Science Direct in...
In the rural areas of Saudi Arabia, which are not connected to the national grid, electricity is supplied mainly from diesel generators. This is not just a non-renewable energy source, but it has also resulted in environmental damage and may be hazardous to human health. In order to mitigate the problem, integration with a solar photovoltaic system...
Solar-based power generation is gaining attention worldwide as it is environment-friendly, and highly sustainable. Saudi Arabia is bestowed with vast solar energy availability. This should be the driving force for generating solar electricity to the optimal. However, the installation of solar photovoltaic (PV) is not as widespread as expected. As p...
Ultra clean fuels generally used along with the conventional fuels such as Compressed Natural Gas (CNG) and hydrogen. The implementation of these alternatives can help take care to the high demand of environment friendly vehicles. These natural gas fuels when blended with diesel are expected to decrease emissions along-with reduction of the petrole...
The effects of hydrogen enrichment in a naturally aspirated spark ignition engine fuelled with compressed natural gas were investigated. A mixer that can control the enrichment fraction and assure homogeneity of hydrogen in CNG was used in the experiments. Hydrogen enrichment mitigates some of the inherent problem with natural gas engine by improvi...
The necessity for renewable energy sources is on the increase all around the world because of the negative consequences of
burning fossil fuel to produce energy. Recently, Saudi Arabia has decided to become the world's largest producer of solar energy
by the vision of Kingdom of Saudi Arabia in 2030. This study mainly focuses on developing a solar...
Development and engine testing of spark plug fule injector as a compressed natural gas direct injection conversion system for spark ignition engine.
RCCI engine is proven to have better combustion control and producing very low NOx and soot emissions. However, RCCI engines operations is limit by HRR and PPRR as well as weak combustion efficiency which results in high release of HC and CO. Engine management factors like injection strategy and compression ratio can affect the reactivity of fuels...
Combustion in diesel engines release harmful gases leading to air pollution. Biodiesel, a mixture of petroleum-based and plant-derived hydrocarbon, is known for its potential to reduce harmful emissions in diesel engines. However, one of the main problems with biodiesel is high carbon deposition due to very long carbon chain content. Additives are...
The research on development work of a solar hot water system using polymer material as thermal absorber was presented at the weekly Yanbu Industrial College Seminar. This work has attracted collaboration with King Abdullah University of Science and Technology, SABIC and Shairco Fiberglass to co-develop a novel material for solar thermal application...
Direct injection in natural gas engine offers a potential of improved performance and thermal efficiency due to increased cylinder charge heating value and possibility of fuel stratification. An engine was converted to direct injection of natural gas using spark plug fuel injector which combines fuel injector and spark plug for easy conversion. The...
Natural gas has not been used as transportation fuel in Saudi Arabia. With the surplus of NG unexplored reserve, fueling ground vehicle can be one effective mitigation measure for cleaner air. This presentation discusses some key points regarding Saudi Arabia’s potential to deploy NGV initiatives and some challenges to overcome.
For global warming and climatic change, the residential houses are used by the greenhouse gas which
will consume more amount of fossil fuel energy. This energy is used for heating/cooling the house inside and some energy is waste or lost through the house wall. The modern house requires more space because of this energy efficient can reduce the de...
Solar simulator plays a vital role in the research and development of solar photovoltaic, solar thermal and builds environment. Producing uniformity in spatial, temporal and spectral radiation distribution are the key
parameters when developing a solar simulator so the sun radiation is matched as closely as possible in the laboratory environment....
This paper describes an improvement of full-load performance of an internal combustion engine using Adaptive Valve Lift And Timing Mechanism (AVLT). AVLT enables engine power improvement by increasing valve timing and lift at high engine speed and load operating regions. It utilizes engine fluids pressure difference with respect to engine speed to...
The influence of diesel enrichment with hydrogen and methane (H2CH4) blend in a direct injection compression ignition (DICI) engine were computationally investigated. Numerical results by using ANSYS FLUENT software are obtained for 40%, 50% and 60% diesel (by mass) with remaining fraction by various blend of H2/CH4 (0%/100%, 30%/70%, 50%/50%, 70%/...
The effects of hydrogen enrichment in a naturally aspirated spark ignition engine fuelled with compressed natural gas were investigated. H2-enrichment mitigates some of the inherent problem with NG engine by improving combustion due to its higher heating value, wider flammability limits, lower ignition energy and faster flame speed. The work aimed...
In the present experimental investigation, untreated waste cooking oil (UWCO) was used
as an alternative fuel for a diesel engine. The high viscosity of the UWCO was reduced by blending
with ordinary diesel. The blends of varying proportions of UWCO and diesel were prepared,
analyzed and compared with diesel fuel. Measurements of chemical and physi...
This paper explains about an improvement of high end performance using an adaptive valve lift and timing mechanism (AVLT). This system is developed with an aim to produce a more powerful engine through a variable valve timing technique. The preliminary design of this system adjusts the valve lift via control lever positioned by the rotation of an e...
The design of the ventilation and fire safety systems for the Johor Bahru Sentral, a semiunderground
train station, part of the Integrated Custom, Immigration and Quarantine Complex
(ICIQ) is based on normal Malaysian Standards (MS), British Standards and the local fire
department’s requirements. However, the large and complex space in the undergro...
Compressed natural gas is the most widely used alternative fuels in internal combustion engines powering nearly 20 millions road vehicles worldwide. Interest in NG is mainly attributed to its price competitiveness. Moreover NG engines produce cleaner emission, easily satisfying most emission standards. Most NG engines are converted from gasoline or...
The effect of gasoline RON95 and RON97 on performance and exhaust emissions in spark ignition engine was investigated. The results were obtained from a 1.6 liter, 4-cylinder Mitsubishi 4G92 engine with compression ratio 11:1. The engine was run at constant speed between 1500 and 3500 rpm with 500 rpm increment at various part-load conditions from 0...
With increasing concerns about energy shortages and environmental protection, research on improving engine fuel economy and reducing exhaust emissions has become a major research focus in combustion and engine development. Also, with conversion a conventional port fuel injection engine to direct injection (DI) and using alternative fuels, air/fuel...
Yanbu Industrial College (YIC) is one of the leading technical colleges in Saudi Arabia offering associate degree and bachelor degree programs in engineering and applied sciences. As a technical college, the approach of teaching is predominantly classical with theoretic lectures and hands-on experimental/laboratory works. Course assessment was heav...
This paper explores the Masters of Mechanical Engineering students’ perceptions on Research Methodology
course, which has been introduced in 2010 in the Department of Mechanical & Materials Engineering, of
Universiti Kebangsaan Malaysia (UKM). The course is only available for students who register KKKJ 6004
(Project 1) in the first semester, which...
Natural gas has been extensively used in automotive engines due to its abundance availability, adaptability to existing engine design, cleaner emission and competitive price. However, converting engine to natural gas always results in power drop. One of the most practical solutions is direct fuel injection. Research on natural gas direct injection...
This paper explains about the evaluation of intake air flow, volumetric efficiency and noise of a motor-driven engine that used an adaptive valve lift and timing mechanism (AVLT) on one intake valve. This system is developed with an aim to produce a more powerful engine through variable valve timing and lift technique. The system made the valve lif...
Power reduction when converting a gasoline engine to propane can be mitigated by designing an injection system so the heat required for evaporation of the propane is drawn from the intake air. Air is cooled and densified, resulting in volumetric efficiency increase. LPG sprays were imaged using Mie and LIF imaging techniques from a port fuel inject...
The combustion characteristics of compressed natural gas (CNG) in a direct microchannel-injection engine under various operating conditions were investigated. In this study, a novel idea for direct CNG microchannel injection was realized with spark plug fuel injector (SPFI). It is a device developed to convert engine to CNG direct injection (DI) op...
Converting a gasoline engine to propane (LPG) usually results in power reduction. This can be mitigated by careful design of the injection system so the heat required for evaporation of the LPG is drawn from the intake air, so it is cooled and densified, resulting in an increase in volumetric efficiency. In this work, LPG sprays were imaged using M...
This paper explains the effect of various lubricant and engine temperatures on the intake mass air flow, engine noise and lubricant pressure behaviour of a motor-driven spark ignition engine. The lubricant pressure, engine noise and mass air flow changes were recorded under a steady state operating condition with an increased engine speed in which...
Direct injection natural gas engine has gain significant interest in the automotive research due to potentials of reducing emissions while improving thermal efficiency [1-3]. Reduced emission is mainly due to high hydrogen-to-carbon ratio of methane, while increased efficiency is due to increased charged energy, elevated turbulent intensity and hig...
This paper presents work conducted at the Universiti Kebangsaan Malaysia to support the HCCI Engine Program. The objective of this paper is to develop an engine that employs Homogeneous Charge Compression Ignition (HCCI) combustion and features using Palm Oil Methyl ester as fuel. A Novel of palm oil product usage for HCCI engine fuel was investiga...
A study had been carried out to investigate the effects of the nozzle injector geometry to the mixture efficiency and also the combustion of gasoline in engine that uses direct injection technology. The investigation was conducted using Computational Fluid Dynamics (CFD) software to examine the spray pattern. Seven nozzle geometries were used in th...
Untreated waste cooking oil (UWCO) is not a feasible diesel fuel. The major problems in engine operation are reported mainly due to UWCO�s high viscosity. To use UWCO's in diesel engine without modification, it is necessary to make sure that the oils properties must be similar to diesel fuel. In this study, UWCO that has been used several times for...
Increasing concerns over energy security and stricter legislation on automotive exhaust emission limits have triggered greater efforts in utilizing alternatives to petroleum-based fuels. Compressed natural gas (CNG) is one of the promising candidates in terms of emissions and price. In this paper, methane, the major constituent of natural gas (NG),...
Some diesel engines can run on some kinds of vegetable oil under some conditions without problems. To use vegetable oils in diesel engine without modification, it is necessary to make sure that the vegetable oils properties must be similar to diesel fuel. In this study, palm oil that has been used several times for frying purposes is investigated f...
.ukm.my. Abstract-A survey was conducted to find the impact of quality of students and the experience gained through international challenges outdoor project activities which involved the students of the UKM. The survey was done on the students that participated in the Shell Eco Marathon which was first organized in Malaysia and in Asia region. The...
The electrical energy consumption in Malaysia has increased sharply in the past few years. Modern energy efficient technologies are desperately needed for the national energy policy. In this paper, a new design of desiccant cooling is being developed at the Solar Energy Research Institute, National University of Malaysia, Malaysia. The new concepti...
Compressed natural gas direct injection can offer many advantages over port fuel injection but to achieve it requires costly and technically difficult modification to engine structure especially due to the need for extra hole for fuel injector. SPFI offer a simple solution for this. Investigations on injection process and experimental engine perfor...
Compressed natural gas (CNG) has been widely used as alternatives to gasoline and diesel in automotive engines. It is a very promising alternative fuel due to many reasons including adaptability to those engines, low in cost, and low emission levels. Unfortunately, when converting to CNG, engines usually suffer from reduced power and limited engine...
A spark plug fuel injector (SPFI), which is a combination of a fuel injector and a spark plug was developed with the aim to convert any gasoline port injection spark ignition engine to gaseous fuel direct injection (Mohamad in Development of a spark plug fuel injector for direct injection of methane in spark ignition engine. PhD thesis, Cranfield U...
The combustion characteristics of methane in a direct injection spark ignition engine using Spark Plug Fuel Injector (SPFI) was investigated. SPFI is a system developed to convert any externally-mixing (port injection, carburetor) spark ignition engine to direct injection by combining fuel injectors into spark plugs. The burning rates of methane we...
This paper presents the results obtained from running a 1.5 Liter, 4-cylinder spark ignition engine with gasoline and compressed natural gas (CNG). Performance and emissions results were recorded under steady state operating conditions. The engine was converted to computer integrated CNG-gasoline bi-fuel operations by installing a sequential port i...
![Table 2 : Properties of gasoline and CNG fuels [19, 20]](profile/Taib-Mohamad/publication/260810767/figure/tbl2/AS:667089174028292@1536057861379/Properties-of-gasoline-and-CNG-fuels-19-20_Q320.jpg)
A single cylinder port injection gasoline engine was converted to a bi-fuel gasoline-compressed natural gas operation. The engine was run at wide open throttle and speeds ranging from 1500 to 5000 rpm. Cylinder pressure and air-fuel flow rate were recorded to calculate the indicated performance. Results show CNG operation yields higher FCE and lowe...
This paper presents the results obtained from running a 1.5 Liter, 4-cylinder spark ignition engine with gasoline and compressed natural gas (CNG). Performance and emissions results were recorded under steady state operating conditions. The engine was converted to computer integrated CNG-gasoline bi-fuel operations by installing a sequential port i...
This paper presents the development of a new approach to visualize gas jet from an automotive fuel injector. This method of visualizing gas jet in water can be used to investigate the gas jet structure, development and interaction with the environment where injection takes place. The fuel injector used is called Spark Plug Fuel Injector (SPFI). SPF...
In recent years, the type of combustion occurred within engine cylinder plays an important role determining the performance and emissions. In the present study, the computational investigation was performed in order to compare characteristics of homogeneous and stratified combustion in a compressed natural gas direct injection engine. The numerical...
A��������� A��������� Kajian ini bertujuan mengenal pasti kedudukan penderia pancaran akustik yang paling baik dalam pemonitoran kelikatan minyak pelincir dengan menggunakan blok enjin diesel sebagai model kajian. Setiap isyarat yang dirambat akan diterjemahkan ke dalam isyarat domain masa dan jelmaan fourier pantas. Tumpuan parameter kajian adalah...
A Spark Plug Fuel Injection (SPFI), which is a combination of a fuel injector and a spark plug was developed with the aim to convert any gasoline port injection spark ignition engine to gaseous fuel direct injection [1]. A direct fuel injector is combined with a spark plug using specially fabricated bracket connected to a fuel pipe and a fuel path...
ABSTRAK Kajian ini bertujuan mengenalpasti lokasi sensor yang paling baik di dalam pemantauan kelikatan minyak pelincir pada blok enjin diesel. Pemantauan menggunakan teknik pancaran akustik. Setiap isyarat dari setiap titik lokasi sensor dianalisa dengan kaedah domain masa dan frekuensi. Antara parameter yang dikaji adalah nilai punca min kuasa du...
A set of engine experiments to measure the combustion and performance of directly injected methane in a spark ignition engine was carried out on a Ricardo E6 single-cylinder engine. Direct injection of methane was achieved by mean of Spark Plug Fuel Injector (SPFI). SPFI is a device that combines a fuel injector with a spark plug into a single unit...
When a gasoline engine is converted to propane (LPG, Autogas) there is usually a reduction in power. This loss can be mitigated by careful design of the injection system such that the heat required for evaporation of the LPG is drawn from the intake air and not the intake walls. The air is cooled and densified, resulting in an increase in volumetri...
Questions
Questions (13)
NGVs have been most practical solution for reducing vehicle emissions and are the most widespread alternative fuel utilization for ground vehicle. They are attractive mainly due to cheaper running cost and cleaner emissions. The downsides of NG engines are limited fuel storage, reduced engine power and emissions of THC and NOx. What are the ongoing challenge with NC engine technologies that requires utmost attention in this technology? What are the routes to improve this technology and its application?
Providing sufficient tools for bachelor degree Mechanical Engineering students to excel in nowadays expectation is crucial. What are your recommended design-analytical software to cover the whole spectrum of Mechanical Engineering studies so by the time students perform their capstone design project, they are sufficiently equipped.
Hot water heating system for residential use is a norm. The portion of electricity bill for water (and space) heating can be around 30% in some countries. Is there any information of this for Gulf countries (Saudi Arabia and surrounding countries) or reference to areas with arid climate?
Can we use LED light for solar simulator if the purpose is to experiment solar hot water heater system?
I came across standards for SHWS from BS and SRCC. But are there any other standards worldwide I.e. ASME, ASHARE etc. Please help. Thank you.
Can anyone suggest software to predict performance of solar water heating system (SHWS). I have gathered solar radiation data and now designing a SHWS for arid area residential application.
I have been awarded with a research fund and is looking for suitable single cylinder research engine with optical access. The project concerns with turbocharged direct injection of gaseous fuel in SI engine. Also need with this DC/AC dyno with control, emission analyzer and laser equipment for in-cylinder flow visualization. Can you please suggest manufacturer/supplier for the complete system. Thank you
