Dr How Heoy Geok

Email: [email protected]

Dr How Heoy Geok is a lecturer in the School of Engineering, Computing and Built Environment, UOW Malaysia KDU Penang University College. She obtained her PhD in Mechanical Engineering from Universiti Malaya (UM). Also, she received her MSc in Mechanical and Materials Engineering and B.Eng degree in Manufacturing Engineering from Universiti Kebangsaan Malaysia (UKM).

Her research interests include combustion & fuel engineering, biofuels, tribology, automotive and internal combustion engines. She has published in a number of high impact journals and conference proceedings in the field of renewable energy and alternative fuels. She is serving as a journal reviewer for renowned local scholarly journals and international journals from Elsevier.

PhD Universiti Malaya (UM), 2010 – 2018
Research Title: Optimization of Fuel Injection Parameters for Low Exhaust Emissions of a Biodiesel Fueled Common-Rail Diesel Engine

Master of Science (Mechanical & Materials Engineering) Universiti Kebangsaan Malaysia (UKM), 2007 – 2010
Research Title: Development of A Spark Plug Fuel Injector for Compressed Natural Gas Direct Injection in Spark Ignition Engine

Bachelor of Engineering (Hons) Universiti Kebangsaan Malaysia (UKM), 2003 – 2007

Year Title
2021

Journal Publications

How, H.G, Teoh, Y., Krishnan, B.N., Le, T., Nguyen, H., and Prabhu, C. (2021). Prediction of Optimum Palm Oil Methyl Ester Fuel Blend for Compression Ignition Engine using Response Surface Methodology. Energy: p. 121238 https://doi.org/10.1016/j.energy.2021.121238

Jason, Y.J.J., How, H.G., Teoh, Y.H., Sher, F., Chuah, H.G., and Teh, J.S. (2021). Tribological Behaviour of Graphene Nanoplatelets as Additive in Pongamia Oil. Coatings, 11(6): p. 732 https://doi.org/10.3390/coatings11060732

Teh, J.S., Teoh, Y.H., How, H.G., Le, T.D., Jason, Y.J.J., Nguyen, H.T., and Loo, D.L. (2021). The Potential of Sustainable Biomass Producer Gas as a Waste-to-Energy Alternative in Malaysia. Sustainability, 13(7): p. 3877 https://doi.org/10.3390/su13073877

Teoh, Y.H., How, H.G., Sher, F., Le, T.D., Nguyen, H.T., and Yaqoob, H. (2021). Fuel Injection Responses and Particulate Emissions of a CRDI Engine Fueled with Cocos nucifera Biodiesel. Sustainability, 13(9): p. 4930 https://doi.org/10.3390/su13094930

Teoh, Y.H., How, H.G., Sher, F., Le, T.D., Ong, H.C., Nguyen, H.T., and Yaqoob, H. (2021). Optimization of Fuel Injection Parameters of Moringa oleifera Biodiesel-Diesel Blend for Engine-Out-Responses Improvements. Symmetry, 2021. 13(6): p.982 https://doi.org/10.3390/sym13060982

2020

Journal Publications

How, H.G., Hwang, J.W.S., Teoh, Y.H., Chuah, H.G., Yeoh, J.J.J., and Teh, J.S. (2020). Investigation of the Corrosion Metals in Moringa Biodiesel Fuel. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 75(1): p. 94-103
https://doi.org/10.37934/arfmts.75.1.94103

Jason, Y.J.J., How, H.G., Teoh, Y.H., and Chuah, H.G. (2020). A Study on the Tribological Performance of Nanolubricants. Processes, 8(11): p. 1372
https://doi.org/10.3390/pr8111372

Teoh, Y.H., How, H.G., Balakrishnan, N.K., Le, T.D., and Nguyen, H.T. (2020). Performance, Emissions, Combustion and Vibration Analysis of a CI Engine Fueled with Coconut and Used Palm Cooking Oil Methyl Ester. Processes, 8(8): p. 990
https://doi.org/10.3390/pr8080990

Teoh, Y.H., How, H.G., Le, T.D., and Nguyen, H.T. (2020). Study of Performance, Emissions, and Combustion of a Common-Rail Injection Engine Fuelled with Blends of Cocos nucifera Biodiesel with Diesel Oil. Processes, 8(10): p. 1287
https://doi.org/10.3390/pr8101287

Teoh, Y.H., How, H.G., Le, T.D., and Nguyen, H.T. (2020). Alexandrian Laurel for Biodiesel Production and its Biodiesel Blends on Performance, Emission and Combustion Characteristics in Common-Rail Diesel Engine. Processes, 8(9): p. 1141
https://doi.org/10.3390/pr8091141

Teoh, Y.H., How, H.G., Peh, C.G., Le, T.D., and Nguyen, H.T. (2020). Implementation of Common Rail Direct Injection System and Optimization of Fuel Injector Parameters in an Experimental Single-Cylinder Diesel Engine. Processes, 8(9): p. 1122
https://doi.org/10.3390/pr8091122

Teoh, Y.H., Krishnan, B.N., How, H.G., Ganesan, S., Yu, K.H., and Huspi, H.A. (2020). Analytical Study of Performance and Emission Characteristics of a Palm Biodiesel Fuelled Engine using Response Surface Methodology. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 75(1): p. 127-136
https://doi.org/10.37934/arfmts.75.1.127136

Yaqoob, H., Teoh, Y.H., Jamil, M.A., Din, Z.U., Hassan, M.U., Jamil, M., and How, H.G. (2020). Feasibility Study of a 50 MW wind farm project in Pakistan. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 74(2): p. 27-42
https://doi.org/10.37934/arfmts.74.2.2742

2019

Journal Publications

Chuah, H.G., Tan, W.H., Chang, B.P., Khoo, T.S., Khor, C.Y., and How, H.G. (2019). The Influence of Surface Roughness on Material Dislocation of Microindentation Using Bonded Interface Technique. Tribology-Materials, Surfaces & Interfaces, 13(4): p. 191-196
https://doi.org/10.1080/17515831.2019.1643074

How, H.G., Teoh, Y., Masjuki, H., Nguyen, H.-T., Kalam, M., Chuah, H., and Alabdulkarem, A. (2019). Impact of Two-Stage Injection Fuel Quantity on Engine-Out Responses of a Common-Rail Diesel Engine Fueled with Coconut Oil Methyl Esters-Diesel Fuel Blends. Renewable Energy, 139: p. 515-529
https://doi.org/10.1016/j.renene.2019.02.112

Teoh, Y.H., How, H.G., Masjuki, H.H., Nguyen, H.-T., Kalam, M., and Alabdulkarem, A. (2019). nvestigation on Particulate Emissions and Combustion Characteristics of a Common-Rail Diesel Engine Fueled with Moringa Oleifera Biodiesel-Diesel Blends. Renewable Energy, 136: p. 521-534 DOI: https://doi.org/10.1016/j.renene.2018.12.110

2018

Journal Publications

How, H.G., Masjuki, H.H., Kalam, M., and Teoh, Y.H. (2018). Influence of Injection Timing and Split Injection Strategies on Performance, Emissions, and Combustion Characteristics of Diesel Engine Fueled with Biodiesel Blended Fuels. Fuel, 213: p. 106-114. https://doi.org/10.1016/j.fuel.2017.10.102

How, H.G., Masjuki, H.H., Kalam, M., Teoh, Y.H., and Chuah, H.G. (2018). Effect of Calophyllum Inophyllum biodiesel-diesel blends on combustion, performance, exhaust particulate matter and gaseous emissions in a multi-cylinder diesel engine. Fuel, 227: p. 154-164. https://doi.org/10.1016/j.fuel.2018.04.075,

How, H.G., Teoh, Y.H., Yu, K.H., Chuah, H.G., and Lim, K.W.S. (2018). Impact of Gasoline RON on Engine Vibration, Knock and Sound Level in a Single-Cylinder SI Engine. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 45(1): p. 73-81
https://www.akademiabaru.com/submit/index.php/arfmts/article/view/2183

Teoh, Y.H., How, H.G., Yu, K.H., Chuah, H.G., and Yin, W.L. (2018). Influence of Octane Number Rating on Performance, Emission and Combustion Characteristics in Spark Ignition Engine. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 45(1): p. 22-34. https://www.akademiabaru.com/submit/index.php/arfmts/article/view/2178

Teoh, Y.H., Masjuki, H.H., How, H.G., Kalam, M., Yu, K.H., and Alabdulkarem, A. (2018). Effect of Two-Stage Injection Dwell Angle on Engine Combustion and Performance Characteristics of A Common-Rail Diesel Engine Fueled with Coconut Oil Methyl Esters-Diesel Fuel Blends. Fuel, 234: p. 227-237. https://doi.org/10.1016/j.fuel.2018.07.036,

YH, Teoh, HG, How, HH, M., and MA, K. (2018). Combustion Characteristics, Emissions and Engine Performances of a Split Injection Diesel Engine Fueled with Biodiesel Blended Fuels. Journal of Mechanical Engineering (JMechE), p. 217-229. http://ir.uitm.edu.my/id/eprint/41739

2017

Journal Publications

Rashedul, H.K., Kalam, M.A., Masjuki, H.H., Teoh, Y.H., How, H.G., Monirul, I.M., and Imdadul, H.K. (2017). Attempts to Minimize Nitrogen Oxide Emission From Diesel Engine by Using Antioxidant-Treated Diesel-Biodiesel Blend. Environmental Science and Pollution Research, 24(10): p. 9305-9313
https://doi.org/10.1007/s11356-017-8573-9

Ruhul, A., Kalam, M., Masjuki, H., Shahir, S., Alabdulkarem, A., Teoh, Y., How, H.G., and Reham, S. (2017). Evaluating Combustion, Performance and Emission Characteristics of Millettia Pinnata and Croton Megalocarpus Biodiesel Blends in a Diesel Engine. Energy, 141: p. 2362-2376
https://doi.org/10.1016/j.energy.2017.11.096

2016

Journal Publications

Imdadul, H., Masjuki, H., Kalam, M., Zulkifli, N., Alabdulkarem, A., Rashed, M., Teoh, Y., and How, H.G. (2016). Higher Alcohol–Biodiesel–Diesel Blends: An Approach for Improving the Performance, Emission, and Combustion of a Light-Duty Diesel Engine. Energy Conversion and Management, 111: p. 174-185
https://doi.org/10.1016/j.enconman.2015.12.066

Monirul, I., Masjuki, H., Kalam, M., Mosarof, M., Zulkifli, N., Teoh, Y., and How, H.G. (2016). Assessment of Performance, Emission and Combustion Characteristics of Palm, Jatropha and Calophyllum Inophyllum Biodiesel Blends. Fuel, 181: p. 985-995
https://doi.org/10.1016/j.fuel.2016.05.010

2015

Journal Publications

Rashedul, H., Masjuki, H.H., Kalam, M., Teoh, Y., How, H.G., and Fattah, I.R. (2015). Effect of Antioxidant on the Oxidation Stability and Combustion–Performance–Emission Characteristics of a Diesel Engine Fueled with Diesel–Biodiesel Blend. Energy Conversion and Management, 106: p. 849-858
https://doi.org/10.1016/j.enconman.2015.10.024

Silitonga, A., Masjuki, H., Ong, H.C., How, H.G., Kusumo, F., Teoh, Y., and Mahlia, T. (2015). Engine Performance, Emission and Combustion in Common Rail Turbocharged Diesel Engine From Jatropha Curcas Using Artificial Neural Network. SAE Technical Paper, 32: p. 1-18
https://www.sae.org/publications/technical-papers/content/2015-32-0710/

Teoh, Y., Masjuki, H.H., Kalam, M., and How, H.G. (2015). Effect of Injection Timing and EGR on Engine-Out-Responses of a Common-Rail Diesel Engine Fueled with Neat Biodiesel. RSC advances, 5(116): p. 96080-96096
https://doi.org/10.1039/C5RA14831F

Teoh, Y., Masjuki, H.H., Kalam, M., and How, H.G. (2015). Comparative Assessment of Performance, Emissions and Combustion Characteristics of Gasoline/Diesel and Gasoline/Biodiesel in a Dual-Fuel Engine. RSC advances, 5(88): p. 71608-71619
https://doi.org/10.1039/C5RA14624K

Teoh, Y., Masjuki, H.H., Noor, I., Ali, B.S., Kalam, M., and How, H.G. (2015). Evaluation of a Novel Biofuel From Unwanted Waste and Its Impact on Engine Performance, Emissions, and Combustion Characteristics in a Diesel Engine. RSC Advances, 5(53): p. 42438-42447
https://doi.org/10.1039/C5RA04294A

Wakil, M., Masjuki, H.H., Kalam, M., Teoh, Y., How, H.G., and Imtenan, S. (2015). Influence of Engine Operating Variable on Combustion to Reduce Exhaust Emissions Using Various Biodiesels Blend. RSC advances, 5(122): p. 100674-100681
https://doi.org/10.1039/C5RA16441A

2014

Journal Publications

How, H.G., Masjuki, H., Kalam, M., and Teoh, Y. (2014). An Investigation of the Engine Performance, Emissions and Combustion Characteristics of Coconut Biodiesel in a High-Pressure Common-Rail Diesel Engine. Energy, 69: p. 749-759
https://doi.org/10.1016/j.energy.2014.03.070

How, H.G., Masjuki, H., Kalam, M., and Teoh, Y. (2014). Effect of Ethanol-Coconut Oil Methyl Ester on the Performance, Emission and Combustion Characteristics of a High-Pressure Common-Rail DI Engine. Applied Mechanics and Materials, 663: p. 19-25
https://doi.org/10.4028/www.scientific.net/AMM.663.19

How, H.G., Masjuki, H., Kalam, M., and Teoh, Y. (2014). Engine Performance, Emission and Combustion Characteristics of a Common-Rail Diesel Engine Fuelled with Bioethanol as a Fuel Additive in Coconut Oil Biodiesel Blends. Energy Procedia, 61: p. 1655-1659
https://doi.org/10.1016/j.egypro.2014.12.185

Mohamad, T.I. and How, H.G. (2014). Part-Load Performance and Emissions of a Spark Ignition Engine Fueled With RON95 And Ron97 Gasoline: Technical Viewpoint on Malaysia’s Fuel Price Debate. Energy Conversion and Management, 88: p. 928-935
https://doi.org/10.1016/j.enconman.2014.09.008

Teoh, Y., Masjuki, H., Kalam, M., Amalina, M., and How, H.G. (2014). Impact of Premixed Kerosene Fuel on Performance, Emission and Combustion Characteristics in Partial HCCI Engine. Energy Procedia, 61: p. 1830-1834
https://doi.org/10.1016/j.egypro.2014.12.223

Teoh, Y., Masjuki, H., Kalam, M., Amalina, M., and How, H.G. (2014). Effects of Jatropha Biodiesel on the Performance, Emissions, and Combustion of a Converted Common-Rail Diesel Engine. RSC Advances, 4(92): p. 50739-50751
https://doi.org/10.1039/C4RA08464K

Teoh, Y., Masjuki, H., Kalam, M., Amalina, M.A., and How, H.G. (2014). Effect of Premixed Diesel Fuel on Partial HCCI Combustion Characteristics. Applied Mechanics and Materials, 2014. 663: p. 26-33
https://doi.org/10.4028/www.scientific.net/AMM.663.26

2013

Journal Publications

How, H.G., Masjuki, H., Kalam, M., Teoh, Y., and Abdullah, M. (2013). Effect of Injection Timing on Performance, Emission and Combustion Characteristics of a Common-Rail Diesel Engine Fuelled with Coconut Oil Methyl Ester. SAE Technical Paper
https://doi.org/10.4271/2013-01-2663

Mohamad, T.I. and How, H.G. (2013). Combustion Characteristics of Compressed Natural Gas in a Direct Microchannel-Injection Engine Under Various Operating Conditions. Applied Mechanics and Materials, 2013. 315: p. 793-798
https://doi.org/10.4028/www.scientific.net/AMM.315.793

Teoh, Y., Masjuki, H., Kalam, M., Amalina, M., and How, H.G. (2013). Impact of Waste Cooking Oil Biodiesel on Performance, Exhaust Emission and Combustion Characteristics in a Light-Duty Diesel Engine. SAE Technical Paper.
https://doi.org/10.4271/2013-01-2679

2012

Journal Publications

How, H.G., Teoh, Y., Masjuki, H., and Kalam, M. (2012). Impact of Coconut Oil Blends on Particulate-Phase PAHs and Regulated Emissions from a Light Duty Diesel Engine. Energy, 48(1): p. 500-509
https://doi.org/10.1016/j.energy.2012.10.009

2010

Journal Publications

Mohamad, T.I., Harrison, M., Jermy, M., and How, H.G. (2010). The Structure of the High-Pressure Gas Jet From a Spark Plug Fuel Injector for Direct Fuel Injection. Journal of Visualization, 2010. 13(2): p. 121-131
https://doi.org/10.1007/s12650-009-0017-2

Mohamad, T.I., Yusoff, A., Abdullah, S., Jermy, M., Harrison, M., and How, H.G. (2010). The Combustion and Performance of a Converted Direct Injection Compressed Natural Gas Engine using Spark Plug Fuel Injector. SAE Technical Paper.
https://doi.org/10.4271/2010-32-0078

2009

Journal Publications

How, H.G., Mohamad, T.I., Abdullah, S., Ali, Y., and Shamsudeen, A. (2009). Experimental Investigation of Performance and Emissions of a Sequential Port Injection Compressed Natural Gas Converted Engine. SAE Technical Paper.
https://www.sae.org/publications/technical-papers/content/2009-32-0026/

2020

RESEARCH GRANT (Co-PI)

Title: Design and Development of High-Speed Rotor for Air-Cooled Eddy Current Dynamometer
Duration:2020 – 2021
Sponsors/Grant: Public-Private Research Network (PPRN) grant (RM100,000)

 

2019

RESEARCH GRANT

Title: Mechanism Study of the Tribological Effect of Nanoparticles as Lubricating Oil Additives for Biodiesel Engine
Duration: Ongoing
Sponsors/Grant: FRGS grant (RM107,200)

Title: Experimental investigation of multi-stage fuel injection strategy on engine-out responses of diesel engine fueled with biodiesel-diesel fuel blends
Duration: 12 months (2019)
Sponsors/Grant: UOW Malaysia KDU Penang University College Research Grant (RM 16,500)

 

2018

RESEARCH GRANT (Co-PI)

Title: Modelling of the effect of surface roughness in plastic strain gradient theory of indentation size effect for micro-indentation
Duration: Ongoing
Sponsors/Grant: FRGS grant (RM61,000)

RESEARCH GRANT

Title: Investigation of compositional instability and engine performance characteristics for non-edible biodiesel fuel
Duration: Ongoing
Sponsors/Grant: UOW Malaysia KDU Penang University College Research Grant (RM 10,000)

2021

Appointments as External Reviewer for Research Development Fund
Xi’an Jiaotong-Liverpool University (XJTLU), China

Appointments as Panelist
International panel session for Global Climate Change Week (GCCW), University of Wollongong, 18 October 2021

Appointments as Reviewer
ENERGY (Elsevier journal)
FUEL (Elsevier journal)

Masters Dissertation: Investigation of the tribological effect of nanoparticles as lubricant additives (Ongoing)
Jason Yeoh Jun Jie

Masters Dissertation: Modelling of the effect of surface roughness in plastic strain gradient theory of indentation size effect for micro indentation (Ongoing)
Kok Weng Mei (Co-supervision)

2020

UOWGE Global Staff Awards – Global Excellence in Research Award

UOW Malaysia KDU 2020 Staff Awards – Research Excellence Award

 

2018

Best Research Publication Award (Science & Technology) – UOW Malaysia KDU Penang University College

Best Research Award (Most Published in Scopus Category) – UOW Malaysia KDU Penang University College

 

2017

Best Research Award (Overall category) – KDU Penang University College

Best Research Award (Science category) – KDU Penang University College

 

2010

Malaysia Technology Expo 2010 by Malaysian Association of Research Scientists, 4-6 February 2010, Kuala Lumpur, Malaysia – Bronze
Spark Plug Fuel Injector

 

2009

Best Paper by Malaysian Award
15th Small Engine Technology Conference by SAE & JSAE, 3 -5 November 2009, Penang, Malaysia

Best Paper Award: Mechanical & Material Engineering
Proceeding of the Regional Engineering Postgraduate Conference, 20-21 October 2009, Putrajaya, Malaysia