Technology Guide

Credits: Paper Authors

DieselNet Editorial Staff

W. Addy Majewski

Editor of Technology Guide papers. Author of a number of papers on emission characterization and aftertreatment technologies.

Addy Majewski was graduated and holds a Ph.D. degree in Chemical Engineering from the Wroclaw University of Technology, Poland. He had been working at the University in areas of heat transfer and heat exchangers, evaporation, distillation and absorption with chemical reaction.

Since 1991 he has been living and working in Toronto, Ontario, Canada. His work experience includes development of diesel particulate filters and emission control catalysts for diesel, LPG and natural gas applications. Currently he is the President of Ecopoint Inc., a consulting firm which specializes in engine emission control technologies and maintains the website.

Addy Majewski is a member of the Society of Automotive Engineers (SAE), the American Society of Mechanical Engineers (ASME), and a licensed Professional Engineer in Ontario. He has authored or co-authored a number of technical publications on emission control topics, including several SAE technical papers.

Hannu E. Jääskeläinen

Author and editor of a number of Technology Guide papers on fuels and engine technology.

Hannu Jääskeläinen holds a M.Eng. degree in Mechanical Engineering from the University of Toronto and resides in Ottawa, Ontario, Canada.

In addition to consulting on combustion, emissions and fuels topics, he carries out research activities with colleagues at the University of Toronto. He is a member the Canadian General Standards Board (CGSB), Middle Distillate Fuels and Gasoline and Alternative Automotive Fuels Committees and a member of SAE.

Since in 1991, he has been involved in experimental research and development work with internal combustion engines at the University of Toronto. This work has focused on combustion, emissions and fuels issues. His research and consultancy experience has included work with diesel, gasoline and alternative fuels such as biodiesel, natural gas and hydrogen for a wide variety of applications. He also has experience with biomass applications for industrial power generation. He has authored numerous publications and reports.

Experts from Industry & Academia

Peter Ahlvik

Papers: Alternative Fuels, Natural Gas

Peter Ahlvik has a M.Sc. degree in Mechanical Engineering from the Technical University of Luleå in Sweden.

Peter Ahlvik is both working as an independent consultant and is participating in the network of the Swedish consultant company Ecotraffic ERD3 AB. Ecotraffic is a privately-owned company based in Stockholm and Ahlvik is one of the shareholders.

Peter Ahlvik was employed at the Swedish truck manufacturer Scania in 1985 after his graduation. He has seven years of experience from diesel engine development at the company. His last position at Scania was the head of the “Performance” group, which was conducting advanced development in the area of exhaust emissions and fuel consumption. Ahlvik also worked for the Swedish Governmental Agency NUTEK, which at that time was responsible for government funded research on engine and fuel technology. He was a Project Manager at AVL MTC (previously MTC), an emission laboratory and consulting company, before joining Ecotraffic in 1998. His main experience is diesel engine emissions, particulate size measurements, alternative fuels and well-to-wheel analysis of fuels and vehicles.

Peter Ahlvik is a member of the Society of Automotive Engineers (SAE) and its sister organizations in Sweden, SMR and SVEA. Ahlvik has authored and co-authored numerous technical publications published (primarily) by MTC, Swedish Governmental Agencies and SAE.

Abdullah U. Bajwa

Papers: Mixture Formation in Hydrogen Engines

Abdullah Bajwa has MS and PhD degrees in mechanical engineering from Texas A&M University (USA), and he worked as a post-doctoral researcher at the University of Oxford (UK). His graduate research focused on studying gas exchange in two-stroke integral compressor natural gas engines and his post-doctoral work looked at injection and mixing in H2 internal combustion engines.

Heinz Burtscher

Papers: Exhaust Gas Sampling, Particulate Matter Measurements, PM Measurement: Collecting Methods, PM Measurement: In-Situ Methods

Heinz Burtscher graduated from Electrical Engineering at ETH Zürich, where he received his diploma in 1976 and a Ph.D. degree in 1980. After graduation, he started research work on aerosols at the ETH laboratory for solid state physics with Prof. H.C. Siegmann. He was the head of the “Small Particles And Aerosols” group. At that time, his research interest focused on combustion generated particles.

After the ETH period, Heinz Burtscher became a scientist at the ABB research center in Dättwil, Switzerland. His main area of work were electrostatic precipitators for coal fired power plants.

Since 1996, Heinz Burtscher has been a Professor at the University of Applied Sciences, Northwestern Switzerland. He is the founder and head of the Institute for Sensors and Signals. His main areas of research are characterization of small particles and combustion aerosols.

Stefan Carstens

Papers: Exhaust Gas Temperature Sensors, Thermal Anemometer Air Flow Sensors

Stefan Carstens studied Industrial Engineering with Business Studies at the TH Darmstadt, focusing on Engineering Design in the field of mechanical engineering.

After successfully completing his studies, he started his professional career in 1990 in an electrical engineering company, WISI KG, near Pforzheim. Three years later, he moved to the Heraeus Gruppe (Group) and passed through many departments in the company‘s “Sensorik” (Sensors) division, amongst others Production Planning and Control and Internal Sales, prior to taking charge of the Sales Office in Freiberg a.N. as the “Exhaust Gas Sensors” Key Account Manager. In March 2001, he entered the Management at a company for sensor technology.

In May 2010, he founded the company EngineSens Motorsensor GmbH in Viernheim, with a main focus on the design and production of high-temperature sensors for use in the field of exhaust gases, and the application of further exhaust gas sensors for the purification of exhaust gas in combustion engines.

Alessandro Ferrari

Papers: Common Rail Fuel Injection System Components, Common Rail Injection System Pressure Control, Injector Deposits

Alessandro Ferrari has graduated with a Master degree in Mechanical Engineering at the Politecnico di Torino, Italy, and holds a PhD degree in Energetics. He is currently is a professor at the Energy Department (Dipartimento di Energetica) of the Politecnico di Torino. Professor Ferrari has been conducting research and has published numerous technical papers in the area of internal combustion engines, with a focus on diesel common-rail injection systems. His research fields also include cavitation, thermodynamics of liquid flows, and computational fluid dynamics.

Kent Froelund

Papers: Lubricating Oil Consumption, Measurement of Lubricating Oil Consumption

Kent Froelund is CEO and Founder of Da Vinci Emissions Services, Ltd., a company offering specialized combustion engine R&D testing equipment for real-time lubricant oil consumption measurement, deemed DALOC, and for real-time fuel dilution measurement, deemed DAFIO. He currently resides in San Antonio, Texas.

His background in combustion engine emissions spans over 20 years. Being a native Dane, and driven by his interest in combustion engines, he studied during his M.Sc. at the Technical University of Braunschweig (TU BS), and did his M.Sc. thesis at BMW R&D in Munich on “Optimization of the Three-Way-Catalyst Towards Reaching 95%+ Conversion Efficiency”. In 1998, he earned a Ph.D. in Mechanical Engineering from the Technical University of Denmark, Denmark, in the area of “Piston-Ring Lubrication and Its Impact on Engine Emissions”. During his doctorate study, he studied at Massachusetts Institute of Technology (MIT) for almost one year. He started his career at Southwest Research Institute (SwRI), located in San Antonio, Texas, where he became Principal Engineer in the Engine Research Department.

Kent has authored 20 technical publications in the area of lubrication and lubricant oil consumption. He won the 2000 SAE Award for Excellence in Oral Presentation, the 2001 Arch T. Colwell Award for Excellence in Technical Writing, and the 2002 SAE McFarland Award for Excellence in Leadership. Multiple of his technical publications were submitted to ASME Transactions.

Magdi K. Khair

Papers on diesel engine basics, diesel combustion, emission formation, and advanced diesel engine design.

Dr. Khair is an Institute Engineer at Southwest Research Institute (retired). His background in diesel engine technology spans over 35 years. He graduated in 1967 from Ain Shams University in Cairo, Egypt with a Bachelor’s of Science degree in Automotive Engineering. He earned a degree of Master of Science in thermodynamics from the University of Birmingham in the UK in 1970. In 1982, Dr. Khair earned a Master’s degree in Business Administration from Michigan State University, and in 2007 he earned a doctorate in Management Engineering from Warren-National University.

Magdi holds 18 US patents in the areas of turbocharging, exhaust gas recirculation, aftertreatment, fuel injection systems, and emission controls. He has twice been awarded SAE’s Forest McFarland award and spoke numerous times at SAE’s TOPTECs, symposia and conferences around the world.

Imad A. Khalek

Papers: PM Measurement: Collecting Methods

Imad Khalek is a Senior Program Manager at SwRI Engine, Emissions and Vehicle Research Division. He has been with SwRI since 1999. He has a BS, MS, and Ph.D. in Mechanical Engineering from the University of Minnesota. He led several major industry and government programs focusing on PM emissions from combustion sources.

Mansour Masoudi

Papers: Soot (PM) Sensors

Mansour Masoudi is the founder of Emissol LLC, an emission control company specializing in automotive powertrain technologies, with a core specialty in emission reduction and aftertreatment technologies.

Throughout his career, he has carried out various responsibilities working on emission control components and systems, including substrate and catalyst technologies, spray injection (fuel, DEF), sensors, aftertreatment system design and optimization, testing and validation. He formerly held technology, product and R&D responsibilities at Corning Inc. as a ‘Senior Product Engineer’, at Delphi Corp. as a ‘Staff Project Engineer’, Bosch Diesel Systems as a ‘Senior Engineer’, at Bosch Emission Systems Group as ‘Manager, Aftertreatment Systems’, at Bosch Diesel Systems as ‘Senior Engineer’, and at Paccar as ‘Manager, Advanced Powertrain Technology’.

Dr. Masoudi is also the co-founder and the Editor-In-Chief of the Journal of Emission Control Science and Technology, an international forum dedicated to latest exchanges in novel findings in emission control. He holds a Ph.D. in Mechanical and Aerospace engineering, a M.S. in Mechanical Engineering and M.S. in management.

Paul Richards

Papers: Filters Using Fuel Borne Catalysts, Diesel Fuel Additives

Paul Richards was educated at the University of Manchester, UK; obtaining his Bachelor and Master degrees in Mechanical Engineering, and finally a PhD for research on the transient performance of a gasoline engine. He worked briefly at the University of Bath, UK, studying diesel combustion.

Paul worked at Innospec Ltd. for over 27 years, being involved in the development and testing of many of their automotive fuel additive products. He was responsible for obtaining Energy Saving Trust and Vehicle Certification Agency recognition for the Diesel Particulate Filter and Fuel Borne Catalyst systems marketed under the name Adastra™.

Paul has authored or co-authored over 40 SAE papers and over 30 other publications. He has lectured regularly on Fuel Borne Catalysts as part of a Continuing Professional Development course. He has also presented at the CARB, SCAQMD, MECA, and ADPF “Course on Ultrafine Diesel Particles and Retrofit Technologies for Diesel Engines” in Diamond Bar, CA and at the “Technical Workshop on DPF-Retrofit for On-Road and Off-Road Applications” held in Beijing, China.

Paul is also a regular participant in SAE International activities, serving a period as chair of the Exhaust Aftertreatment and Emissions Committee. He is currently chair of the Powertrain, Fuels and Lubricants Activity and an associate editor of the SAE International Journal of Fuels and Lubricants.

Alexander G. Sappok

Papers: Ash Accumulation in Diesel Particulate Filters, Soot (PM) Sensors

Dr. Alexander Sappok is Director of RF Sensors for CTS Corporation’s Boston Innovation Office. Previously, Dr. Sappok served as President of FST, an MIT spin-out company developing advanced sensors for engine emissions control systems, acquired by CTS.

Prior to CTS and FST, Dr. Sappok’s research career at the Massachusetts Institute of Technology Sloan Automotive Laboratory spanned a range of topics including fuel efficiency, emissions reduction, and diesel emissions aftertreatment systems. He is a past recipient of the SAE Arch T. Colwell Merit Award, SAE Lloyd. L. Withrow Distinguished Speaker Award, the SAE John Johnson Award for Diesel Research, and an R&D 100 Award for RF sensor development.

Dr. Sappok holds a B.S. in Mechanical Engineering from Kansas State University, and S.M. and Ph.D. degrees in Mechanical Engineering from MIT, where he also held the Cummins-MIT Fellowship. He has served on the organizing committee for the ASME Internal Combustion Engines Division Emissions Track since 2010.