Eduardo J. Barrientos, PhD Avatar

Eduardo J. Barrientos, PhD

Fuel Technology Advisor

ExxonMobil Research & Engineering


Technology System Engineer - Diesel Advanced Engineering  
GM Global Propulsion Systems – Torino S.r.l., March 2015 to November 2018, Torino Italy

New product development and advanced concepts for diesel vehicles with emphasis in aftertreatment systems

Post-Doctoral Researcher  
Czech Technical University, July 2014 to Present, Prague Czech Republic

Energy Conversion and Storage Segment, Leadership Team  
ASME, June 2014 to July 2017

Research Associate  
University of Michigan, January 2014 to July 2014, Ann Arbor, Michigan United States

ASME, June 2013 to June 2014
Vice-President of Affinity Communities. In charge of board operations and strategy. Board Mission: Increase opportunities for members with common technical or professional interests to meet, acquire knowledge and network by leveraging online communication tools. Board Vision: To give every engineer a place where they can self-identify and belong within ASME.

Visiting Scientist  
Ford Motor Company, May 2013 to December 2013, Dearborn, Michigan United States

Diversity and Inclusion Strategy Committee, MAL  
ASME, November 2012 to July 2015

LTC 2013, Premier Track Lead  
ASME, June 2012 to March 2013, St. Louis, Missouri United States
The Leadership Training Conference provides ASME’s volunteers with leadership training, essential information for key unit and committee members and networking opportunities with peers. The 2013 LTC focused on the needs of volunteer leaders in the Knowledge & Community Sector, including sections in Districts A-F only (North America and Mexico). The Premier Track was designed to provide leadership development skills needed by incoming unit Chairs or Vice-Chairs. It focused on vision and goals, strategies for gaining the “buy-in” of others and how to develop and execute unit plans.

PSU EcoCAR2 Team Leader  
Penn State University, August 2011 to December 2012, University Park, Pennsylvania United States
EcoCAR 2: Plugging In to the Future, is a three-year collegiate engineering competition and the only program of its kind. The competition's mission is a vital one: offer an unparalleled hands-on, real-world experience to educate the next generation of automotive engineers. The competition challenges 15 universities across North America to reduce the environmental impact of a Chevrolet Malibu without compromising performance, safety and consumer acceptability.

Chair, K&C Training Committee  
ASME, July 2010 to November 2012
Created annual training program for our K&C sector to develop the knowledge and skills that our volunteers need to lead their units effectively.

Member, Programs & Activities Board  
ASME, July 2010 to November 2012

The Board on Programs and Activities shall: promote the development and establishment of programs; develop business methods and goals; and serve as a resource to K&C operating units, while promoting collaboration with activities between operating units of the Knowledge and Community Sector and between K&C units and other Sectors.

Nominating Committee Rep  
ASME, June 2010 to June 2011

The Nominating Committee selects a slate of qualified and competent nominees for election by the ASME membership to serve as President, Board of Governors Members-at-Large, and the 17 Unit Vice President’s for ASME. I represented Affinity Communities.

Graduate Research Assistant  
The Pennsylvania State University, January 2008 to December 2012, University Park, Pennsylvania United States
- Research experiences include: alternative fuels, fuel formulation, engine performance, hybrid vehicles technology and emissions characterization.

Chair, International Outreach Affinity Group  
ASME, December 2007 to June 2010

This Affinity Group was created with the goals of: 1. Find new volunteers and leaders in the international districts and link them to the core organization. 2. Provide a sense of community for international members. 3. Collaborate on activities to magnify our impact on society worldwide.

Member-At-Large, Committee on Student Development  
ASME, April 2007 to June 2008

The CSD was delegated to oversee the operation and coordination of student competitions, conferences, programs, and activities to enhance the development of student members. As a member of this committee I was responsible for implementing strategies to expand team operations in Asia, Latin America, Europe and Africa, and market teams across the organization for collaboration & support.

Member-At-Large, Committee on Early Career Development (CECD)  
ASME, December 2006 to November 2010
The CECD is chartered with the development, management and implementation of products and services serving the early career professionals. As a member of this committee I performed in the following positions and tasks: Positions: - Strategic Partnerships Project Team Leader (2009 - 2010) - Early Career Forum (ECF) Project Team Leader (2008 - 2009) - ME Today Project Team leader (2008) - Student Representative (2007) Tasks: - Provided support during the planning, organization and ECF Old Guard Grant Application process to the ECFs held by the New Mexico section in 2009, the Santa Clara Valley Section in 2009, the Seattle section in 2009 and the Drexel student section in 2008. - Part of the organizing team of ECF hosted in Venezuela on 2008. First and only ECF held outside the US to the date. - Part of the organizing team of the ECF held at the Manufacturing Division Conference in October 2010.

Combustion, Energia & Ambiente, C.A. (CEA&CA), July 2006 to February 2007, Valencia Venezuela
- Created Software for Boilers and Auxiliary Equipment Efficiency Determination. - Introduced the only software in the country capable of determining the boiler’s efficiency in real time while providing operators the opportunity to supervise the equipment’s performance and take corrective actions.

Latin America & Caribbean Representative, Student Section Committee  
ASME, June 2006 to June 2007

Elected by ASME students from 17 countries of Latin America & Caribbean as student representative.

Student Section Chair  
ASME Universidad Simon Bolivar Student Section, June 2005 to July 2006

As chair of ASME USB's student section I conducted the following activities: 1. Led the planning and organization of the 5th Annual ASME Engineering Congress. 2. Compted in the Human Powered Vehicle Challenge (HPVC) 2006. 3. Competed on the Student Design Competition (SDC) 2005


University of Michigan - Ann Arbor  
Other, Mechanical Engineering, Jan, 2013 to Dec, 2013
Visiting Scholar

Penn State Univ/Univ Park  
Doctor of Philosophy, Mechanical Engineering, Jan, 2010 to Dec, 2013

Penn State Univ/Univ Park  
Master Of Science, Mechanical Engineering, Jan, 2008 to Dec, 2009

Universidad Simon Bolivar  
Bachelor Of Science, Mechanical Engineering, Sep, 2001 to Jan, 2007
- Thesis Honor's Mention


  • DfSS Green Belt
    March 2017


Examination of the Sooting Tendency of Three-Ring Aromatic Hydrocarbons and Their Saturated Counterparts     
Published by (Energy & Fuels)
Authors: Barrientos, Eduardo; Boehman, Andre.  Published June 01, 2010

Hydrotreating of a 1:1 blend of coal-derived refined chemical oil (RCO), with petroleum-derived light cycle oil (LCO), has been identified as a strategy for the production of an advanced coal-based jet fuel, JP-900. The conversion of the jet fuel section of a conventional refinery for the production of coal-based JP-900 would impact the quantity and quality of the other refinery products, such as diesel. The physical and chemical properties of refinery streams may be perturbed by the introduction of coal components into the refinery, including the sooting tendency. A coal-derived diesel cut was chemically analyzed via gas chromatography−mass spectrometry (GC−MS). The results showed that two- and three-ring aromatics and their hydrogenated derivatives comprised the bulk of the cut. Phenanthrene and its hydrogenated derivatives were chosen as representative compounds of this cut. Existing sooting tendency correlations and soot formation indicators in the literature apply to some two-ring aromatic compounds, but little or no information is available about how to predict the sooting tendency of aromatics with three or more rings. The present study provides an analysis of the effects of three-ring aromatic hydrocarbons on soot formation and evaluated how their saturated counterparts contribute to the reduction of the sooting tendency. This research also generated a consistent set of data for smoke point and threshold sooting index (TSI), a parameter proposed for evaluating the onset of soot formation, for three-ring compounds, which have not been reported previously. It was found that the sooting tendency of aromatics is more accurately estimated by investigating their effect on hydrocarbon mixtures rather than as pure compounds. When adding aromatic compounds with the same number of carbon atoms to a reference mixture of 35% (v/v) toluene and 65% (v/v) n-heptane, the most saturated compounds showed the lowest sooting tendency. At small concentrations, three-ring saturated hydrocarbons in fuel blends did not improve the sooting tendency, in contrast to two-ring saturated compounds, which are good hydrogen donors and have low sooting tendency. Finally, the calculated TSI of the mixtures was used to estimate the TSI and smoke points of the individual three-ring compounds contained in the blend using mixing rules.

Estimation of Opacity Tendency of Ethanol- and Biodiesel-Diesel Blends by Means of the Smoke Point T     
Published by (Energy & Fuels)
Authors: Armas, Octavio; Gomez, Arantzazu; Barrientos, Eduardo; Boehman, A..  Published July 01, 2011

Oxygenated fuels in diesel engines represent an alternative to conventional petroleum-derived fuel to achieve current European emissions standards (EURO 5), especially with regard to particulate matter (PM), where the reduction of the limit in mass concentration is 80% compared to that for the previous EURO 4 standard. Among these oxygenated fuels, biodiesel- and ethanol-diesel blends have great potential in reducing smoke opacity and, therefore, the particulate matter emitted. The smoke point is a technique used for determining the sooting tendency of kerosene and aviation fuels and it can be used as an indicator of smoke opacity. The smoke point technique can also be used with an extensive variety of fuels including automotive diesel fuels. This work proposes a new methodology for estimating the decrease in diesel engine exhaust opacity when different ethanol- and biodiesel-diesel blends are used instead of conventional diesel fuels. Different binary biodiesel- diesel and ethanol-diesel blends were tested in a smoke point lamp together with ternary ethanol-biodiesel-diesel blends. The results of binary blends were compared to the opacity obtained in a light duty diesel engine operating in a steady state mode confirming that the molecular weight to smoke point ratio accurately reproduces the decreasing trend in opacity, when normalized to a conventional diesel fuel, as a function of the percentage of biodiesel or ethanol in the blend. Moreover, the new proposed methodology showed how not only the oxygen content but also its functional group plays an important role in this decreasing opacity trend. In this way, tests of ternary ethanol-biodiesel-diesel blends on a smoke point lamp could predict the trend in smoke opacity when a diesel engine is fuelled with them.

Design, Development and Validation of the 2013 Penn State University E85 Series Plug-In Hybrid Vehicle     
Published by (SAE International)
Authors: Barrientos, Eduardo; Grigoryan, Aram; Neal, Gary; Shepley, Luke.  Published September 09, 2012

The Pennsylvania State University Advanced Vehicle Team (PSU AVT) is one of the fifteen (15) participating teams at the EcoCAR 2 “Plugging In to the Future” challenge. The team has worked in the design, development and validation of converting a 2013 Chevrolet Malibu, into an advanced technology hybrid vehicle. The PSU AVT has determined that a Plug-In Series Electric Hybrid architecture best meets the design goals of the EcoCAR 2 competition. The vehicle will utilize a front-wheel drivetrain powered by a Magna E-drive; an Auxiliary Power Unit (APU) based on a naturally aspirated Weber MPE 750 engine, converted for use with E85, coupled to a UQM PowerPhase 75 generator; an Energy Storage System (ESS) based on six A123, 15s3p battery modules; and a Mototron ECM-5554-112-0904 controller as the Master Vehicle Controller (MVC). This paper will present the details of the proposed architecture, including the selection. process and validation as well as future engineering considerations in order to implement the design into the vehicle.

Effects of Oxygenates Molecular Structure on the Sooting Tendency and PM Emissions of Ethanol-Gasoli     
Published by (Proceedings of the IMECE 2012 )
Authors: Barrientos, Eduardo; Boehman, Andre; Neal, Gary; Haworth, Daniel.  Published November 01, 2012

Fuel composition has a significant effect in emissions from particulate matter (PM) and soot formation in internal combustion engines. Numerous studies, both experimental and numerical, have reported that oxygenated fuels reduce particulate emissions. These studies have proved that this reduction depends not only on the oxygen content but also on the molecular structure and the different oxygen functional groups. Consequently, this paper contains an analysis of the relationship between fuel composition and soot formation and PM emissions from oxygenated fuel blends. In this study, ethanol-gasoline and biodiesel-diesel fuel blends have been tested via a smoke point lamp in order to determine the variations in the sooting tendency in relation to the oxygen content of fuel blends and the effect of oxygenated additives on the sooting propensity of the blends. Particulate matter collected from the smoke point tests has been analyzed via X-Ray Photoelectron Spectroscopy (XPS) to quantify the surface oxygen content of the soot samples and to qualitatively identify oxygen functionalities on the samples. An attempt was made to correlate these results with the oxygen concentrations and molecular structure of the fuels.

Group additivity in soot formation for the example of C-5 oxygenated     
Published by (Combustion and Flame)
Authors: Barrientos, E.; Lapuerta, M.; Boehman, A..  Published May 23, 2013

Sooting tendencies have been measured for 29 compounds with 5 carbon atoms and different oxygen contents, along with 12 additional oxygenated pure compounds and 10 blends of commercial fuels. The test compounds include alcohols, ethers, aldehydes, ketones, acids, esters, keto-esters and hydroxy-esters. The Threshold Sooting Index (TSI), as defined and used in the literature, was primarily used to quantify the sooting tendency of the compounds. It is shown that this index does not account for the presence of oxygen atoms in the fuel molecules, and the impact of fuel oxygen on the stoichiometric air requirement. The application of TSI to oxygenated fuels leads to sooting tendencies inconsistent with those reported in the literature. A new sooting index is proposed for oxygenated and non-oxygenated compounds, which considers the relation between the height of the flame tip and the volumetric stoichiometric air requirement of the flame. This new index is denoted as the Oxygen Extended Sooting Index (OESI). The results obtained by this new index corroborate that not only the oxygen content but also the molecular structure has an influence on the sooting tendency of fuels. Different functional groups, not only those including oxygen atoms, impart different sooting tendencies. A structural group contribution approach based on group additivity is proposed to interpret experimental observations on the effect of oxygen functional groups on the sooting tendency of fuels using the example of C-5 oxygenated fuels. Groups with a higher fraction of carbon–carbon bonds showed a higher contribution to the sooting tendency than those with a higher concentration of carbon–hydrogen bonds. Among the C-5 mono-oxygenated compounds, the sooting tendency increased in this order: aldehydes < alcohols < ketones < ethers < n-alkanes and for the C-5 di-oxygenated compounds, the sooting tendency order was: acids < esters < di-ethers. In general, both unsaturated and branched compounds showed slight increases in sooting tendency with respect to their saturated and linear counterparts. Finally, the new sooting index was applied to commercial biofuel blends (denatured ethanol–gasoline and soybeanderived biodiesel–diesel) and empirical correlations were obtained.

Impact of Ester Structures on the Soot Characteristics and Soot Oxidative Reactivity of Biodiesel     
Published by (SAE)
Authors: • Barrientos, E.; Maricq, M.; Anderson, J.; Boehman, A. .  Published April 01, 2015


ASME Early Career Award Runner-up, 2011

ASME Charles T. Main Silver medal, 2009