José Ignacio Huertas

José Ignacio Huertas
Tecnológico de Monterrey | ITESM · School of engineering and science

DSc

About

90
Publications
30,623
Reads
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1,032
Citations
Introduction
Dr. José Ignacio Huertas currently works at the School of engineering and science, Tecnológico de Monterrey. His research focus in the reduction of energy consumtion in vehicle fleets.
Additional affiliations
January 2003 - present
Tecnológico de Monterrey
Position
  • Professor
January 1997 - December 2002
Los Andes University (Colombia)
Position
  • Associae professor
Education
January 2004 - December 2005
August 1994 - August 1997
Washington University in St. Louis
Field of study
  • Combustion
September 1992 - August 1994
Washington University in St. Louis
Field of study
  • Mechanical engineering

Publications

Publications (90)
Article
Full-text available
Fleet managers state that fuel consumption accounts for 50% of the operating costs of their cargo and passenger vehicle fleets. Aiming to reduce these costs, transport companies contract telematics services to track their units and monitor fuel consumption along with other variables. The gathered information is used to alert managers on events like...
Article
Full-text available
Electrification of heavy-duty vehicles (HDVs) used for passengers and goods transportation is a key strategy to reduce the high levels of air pollution in large urban centers. However, the high investment cost of the commercially available electrified HDVs has limited their adoption. We hypothesized that there are applications where the operation w...
Article
Previous studies have remarked that real-world tailpipe emissions are much higher in Mexico than in the US. This work investigates the reason for those differences by comparing results from remote sensing measurements obtained in four different locations within Mexico and the US. Statistical analyses showed that fuel formulation, altitude, and vehi...
Article
Full-text available
This work presents the Campus City initiative followed by the Challenge Living Lab platform to promote research, innovation, and entrepreneurship with the intention to create urban infrastructure and creative talent (human resources) that solves different community, industrial and government Pain Points within a Smart City ecosystem. The main contr...
Article
Full-text available
Experts confirm that 85% of the world’s population is expected to live in cities by 2050. Therefore, cities should be prepared to satisfy the needs of their citizens and provide the best services. The idea of a city of the future is commonly represented by the smart city, which is a more efficient system that optimizes its resources and services, t...
Article
Full-text available
Vehicles fuel consumption under real-world conditions can be up to 60% higher than reported by vehicle manufacturers. One of the most influential factors in this discrepancy is the use of Air conditioning (A/C). However, the study of the contribution of A/C to fuel consumption and emissions has been limited to laboratory tests. This study aims to d...
Article
Full-text available
Using the Computational Fluid Dynamics technique (CFD), we explored the effects of the atmospheric stability conditions on the dispersion of solid and gas-phase pollutants emitted from an area source located on a flat region. As an application, the dispersion of pollutants emitted from roads located on flat terrains was considered. Toward that end,...
Article
Full-text available
To improve air quality in urban centers, vehicle Inspection and Maintenance (I/M) programs were created to identify highly polluting vehicles and force them to undergo mechanical maintenance. In this context, a methodology, based on a single measurement campaign using a Remote Sensing Device (RSD), is presented in this work to assess the reduction...
Conference Paper
Full-text available
Vehicle Inspection and Maintenance (I/M) programs were originally created for controlling the deterioration of air quality by identifying vehicles with high emissions and forcing them to undergo for mechanical maintenance. We describe a methodology, based on remote sensing campaigns, to evaluate the potential emission reductions of I/M programs in...
Article
This study presents the Energy Based Micro-trip (EBMT) method, which is a new method to construct driving cycles that represent local driving patterns and reproduce the real energy consumption and tailpipe emissions from vehicles in a given region. It uses data of specific energy consumption, speed, and percentage of idling time as criteria of acce...
Article
Full-text available
Currently, there is an increasing interest in modeling the dispersion of atmospheric pollutants using computational fluid dynamics (CFD), to characterize the influence of the traffic-generated emissions on the temporal and spatial variability in air pollutant concentrations in the near-roadway environment. To advance in this task, we modeled the di...
Article
We report simultaneous measurements of fuel consumption, driving patterns, and CO2, CO, and NOx emission factors for diesel passenger buses under real operating conditions in high altitude cities (>2000 masl) and in mountainous regions with an average road grade of 4%. These measurements were obtained using a Portable Emission Measurement System (P...
Article
Currently, there is an increasing interest for driving cycles (DCs) that truly represent the driving pattern of a given region aiming to evaluate the energy efficiency of electric vehicles and identify strategies of energy optimization. However, it has been observed increasing differences in the energy consumption reported using type-approval DCs a...
Conference Paper
Full-text available
Vehicle-Fleet´s Managers require to identify relevant aggregate metrics to monitor the performance of their vehicles and drivers. The chosen metric should help in the decision making process of programs relative to the vehicle maintenance, drivers awarding, vehicle routing, fleet renovation, among others. It is well known that fuel consumption is a...
Article
Full-text available
Agricultural burning is still a common practice around the world. It is associated with the high emission of air pollutants, including short-term climate change forcing pollutants such as black carbon and PM2.5. The legal requirements to start any regulatory actions to control them is the identification of its area of influence. However, this task...
Article
Full-text available
Aiming to advance in the understanding of pollutant dispersion near roads, we measured, simultaneously, vehicle traffic, meteorological parameters, and 24-h average concentration of particulate matter (TSP, PM10, and PM2.5) at several locations downwind two unpaved roads, located on a flat region without any other relevant source of pollutants. We...
Article
Full-text available
This work compares the Micro-trips (MT), Markov chains–Monte Carlo (MCMC) and Fuel-based (FB) methods in their ability of constructing driving cycles (DC) that: (i) describe the real driving patterns of a given region and (ii) reproduce the real fuel consumption and emissions exhibited by the vehicles in that region. To that end, we selected four r...
Book
Full-text available
Este informe técnico, Avances y Oportunidades para Reducir los Contaminantes Climáticos de Vida Corta en América Latina y el Caribe, analiza ejemplos de iniciativas y medidas que han reducido exitosamente las emisiones de carbono negro, metano y algunos hidrofluorocarburos en América Latina y el Caribe, los tres Contaminantes Climáticos de Vida Cor...
Article
Full-text available
Type-approval driving cycles currently available, such as the Federal Test Procedure (FTP) and the Worldwide harmonized Light vehicles Test Cycle (WLTC), cannot be used to estimate real fuel consumption nor emissions from vehicles in a region of interest because they do not describe its local driving pattern. We defined a driving cycle (DC) as the...
Article
Full-text available
In the chemical industry it is common to find production systems characterized by having a single stage or a previously identified bottleneck stage, with non-identical parallel stations and with configuration or preparation costs depending on the production sequence. This paper proposes a mixed integer production scheduling model that seeks to iden...
Book
Full-text available
This report identified the key measures on transport, residential, agriculture (open burning), small industry and oil and gas sectors that will deliver most of the reductions for black carbon and co-emitted substances in Latin America and the Caribbean region. The report also identified key measures on agriculture (livestock), municipal solid waste...
Article
Full-text available
Driving cycles currently available cannot be used for the eco-design of vehicles power trains because those cycles do not describe local driving patterns. The main difficulty in obtaining a representative driving cycle is the lack of a repeatable and reproducible methodology to ensure that the resulting cycle is representative of local conditions....
Article
Full-text available
The use of ethanol in gasoline has become a worldwide tendency as an alternative to reduce net CO2 emissions to the atmosphere, increasing gasoline octane rating and reducing dependence on petroleum products. However, recently environmental authorities in large urban centers have expressed their concerns on the true effect of using ethanol blends o...
Article
This research identifies key variables that influence fuel consumption that might be improved through eco-driving training programs under three circumstances that have been scarcely studied before: (a) heavy- and medium-duty truck fleets, (b) long-distance freight transport, and (c) the Latin American region. Based on statistical analyses that incl...
Preprint
Full-text available
Aiming to advance in the understanding of pollutant dispersion near arterial roads, we measured, simultaneously, meteorological parameters, emission mass rates and TSP, PM10 and PM2.5 concentrations at several locations downwind two roads, located on a flat region without any other source of pollutants. We also implemented on a state of the art com...
Conference Paper
El consumo energético del sector del transporte tiene una notable incidencia en el consumo global de las naciones, en la estructura de costos de las empresas y en la contaminación atmosférica mundial. Por lo tanto, se hace indispensable aumentar la eficiencia energética del sector para mejorar la calidad del aire, la competitividad y la sostenibili...
Article
Implications: Measurements of off-road vehicles used in construction and agricultural activities in Mexico using on-board portable emissions measurements systems (PEMS) showed that these vehicles can be major sources of black carbon and NOX. Emission factors varied significantly under real-world operating conditions, suggesting the need for detail...
Article
Vehicle operation over paved and unpaved roads is an emission source that significantly contributes to air pollution. Emissions are derived from vehicle exhaust pipes and re-suspension of particulate matter generated by wind erosion and tire to road surface interactions. Environmental authorities require a methodology to evaluate road impact areas,...
Article
Shaft fatigue testing involves long test times (~3 months), high energy consumption and high test equipment maintenance costs owing to the high bending and twisting moments required (~1600 Nm), high number of cycles (~10⁷) and large sample sizes (~30). To reduce testing time, we designed, manufactured and evaluated a resonant plate test bench. Usin...
Article
Full-text available
This study examines a pathway for building urban climate change mitigation policies by presenting a multi-dimensional and transdisciplinary approach in which technical, economic, environmental, social, and political dimensions interact. Now, more than ever, the gap between science and policymaking needs to be bridged; this will enable judicious cho...
Chapter
Full-text available
In 2011, two scientific global assessments coordinated by the United Nations Environment Programme (UNEP) identified a number of win-win measures for near-term climate change and clean air benefits. Implementation of these cost-effective and readily available measures, which target reducing emissions of short-lived climate pollutants (SLCPs) in key...
Chapter
Full-text available
Chapter
Full-text available
In 2011, two scientific global assessments coordinated by the United Nations Environment Programme (UNEP) identified a number of win-win measures for near-term climate change and clean air benefits. Implementation of these cost-effective and readily available measures, which target reducing emissions of short-lived climate pollutants (SLCPs) in key...
Article
The Mexico City Metropolitan Area (MCMA) is one of the most polluted megacities in North America. Therefore, it is an excellent benchmark city to understand atmospheric chemistry and to implement pilot countermeasures. Air quality in the MCMA is not within acceptable levels, mainly due to high ground levels of ozone (O3). Tropospheric O3 is a secon...
Article
Full-text available
We describe the use of a gas bubbler apparatus in which the gas phase is bubbled into a fixed amount of absorbent under standard conditions as a uniform procedure for determining the absorption capacity of solvents. The method was systematically applied to determine the CO2 absorbing capacity of MEA () at several aqueous MEA (β) and gas-phase CO2 c...
Article
Full-text available
This article describes a study on a non-thermal plasma device to treat exhaust gases in an internal combustion engine. Several tests using a plasma device to treat exhaust gases are conducted on a Honda GX200-196 cm3 engine at different rotational speeds. A plasma reactor could be efficient in degrading nitrogen oxides and particulate matter. Monox...
Article
This work proposes an approach for solving the aircraft maintenance routing problem (AMRP) and the crew scheduling problem (CSP) in sequential and integrated fashions for airlines having a single fleet with a single maintenance and crew base, as is the case for most Latin American and many low-cost airlines. The problems were initially solved in th...
Article
Particulate matter is the main air pollutant in open pit mining areas. Preferred models that simulate the dispersion of the particles have been used to assess the environmental impact of the mining activities. Results obtained through simulation have been compared with the particle concentration measured in several sites and a coefficient of determ...
Article
Full-text available
We propose to find simultaneously the flight schedule design and the aircraft routing, considering at the same time maintenance requirements. This approach leads to a closer global optimal solution than the typical sequential one, and it is practical for the case of airlines with a single fleet, such as many emerging young low-cost airlines. The fo...
Article
Full-text available
For the case of low-cost airlines, which are characterized by having a single fleet with a small number of airplanes, in a previous work, a heuristic algorithm (AFS-MRA) was developed to simultaneously find the flight schedule and the aircraft routes subject to maintenance constraints. This work advances this algorithm by incorporating competition...
Article
Full-text available
Because the health effects and their contribution to climate change, the emissions of toxic gases are becoming more controlled. In order to improve the diminution of toxic gases to the atmosphere, several techniques have been developed; here it will be focus only to automotive emissions. This work deals about the treatment of toxic gases emitted fr...
Article
Assuming that state-of-the-art air quality models are accurate, then the precision and accuracy of their results directly depend on the precision and accuracy of their geographical, meteorological and emission input data. There are important applications, such as open pit mining, in which emission data are the main source of uncertainty. In such ca...
Article
We characterized airborne particle samples collected from 15 stations in operation since 2007 in one of the world's largest opencast coal mining regions. Using gravimetric, scanning electron microscopy (SEM-EDS), and X-ray photoelectron spectroscopy (XPS) analysis the samples were characterized in terms of concentration, morphology, particle size d...
Article
Full-text available
Introduction There is still interest in a unified methodology to quantify the mass of particulate material emitted into the atmosphere by activities inherent to open-pit mining. For the case of total suspended particles (TSP), the current practice is to estimate such emissions by developing inventories based on the emission factors recommended by t...
Article
The coal mining region in northern Colombia is one of the largest open pit mining regions of the world. In 2009, there were 8 mining companies in operation with an approximate coal production of ∼70 Mtons/year. Since 2007, the Colombian air quality monitoring network has reported readings that exceed the daily and annual air quality standards for t...
Article
Full-text available
This article presents a literature review about the quantification and characterization of total suspended particles (TSP) and inhalable particulate matter (PM 10) generated in open pit coal mining areas. Particle matter is a complex pollutant due to its physical characteristics (particle size distribution, morphology and density) and its chemical...
Article
Full-text available
Currently, most of the vehicular emissions inventories developed for large cities are based on the emissions factors developed by the US EPA. Trying to use the US EPA MOBILE tool, the local environmental authorities concentrate their efforts in modifying those emissions factors to take care of the particular characteristics of each city. However, t...
Conference Paper
The mining region of the Cesar Department, Colombia, is made up of 6 mining companies with an approximate coal production of ∼3.5×107 tonnes/year through open cut exploitation. The region has an air quality monitoring network that reports readings exceeding the standard for the daily and annual concentration of PST and PM10 . In order to orient the...
Article
Full-text available
This paper describes analytical and experimental work developed to evaluate the effects of the electromagnetic fields produced by high-voltage lines (400 kV) on wireless data transmission at the 900MHz band. In this work the source of the data transmission is located inside the electromagnetic field and the reception station is located at different...
Conference Paper
Full-text available
This paper describes analytical and experimental work developed to evaluate the effects of the electromagnetic fields produced by high-voltage lines (400 kV) on wireless data transmission at the 900 MHz band. In this work the source of the data transmission is located inside the electromagnetic field and the reception station is located at differen...
Conference Paper
Currently, there is an increasing interest in connecting thousands of small electrical plants powered by renewable energy sources to national electrical grids. The use of biogas as fuel for internal combustion engines connected to an electric generator is emerging as one of the most attractive alternatives because of its very low cost benefit ratio...
Article
Full-text available
Currently, the number of companies that provide diagnosis, repair and maintenance services to the electronic control modules – ECMs of the vehicles is very limited. Even though the demand of the service is still unsatisfied, the possibility of expansion of the existing companies is limited by the need of an engine simulator to semi-automate the ECM...
Article
Full-text available
Purpose – The purpose of this article is to present a model to estimate and evaluate the operational costs of alternative layouts for large capacity warehouses or distribution centers with a large variety of goods. Design/methodology/approach – The proposed model is based on time and resources studies per each of the basic activities on a warehouse...
Article
Full-text available
The main objective of this research is to evaluate the concentration of Carbon Monoxide (CO) in the environment, due to emissions from mobile sources in a site with high motor vehicle and population densities. Through the application of criteria to determine adequate sampling points for mobile emissions sources were selected: an emission zone (a si...
Conference Paper
Currently there is a need for a model to estimate mass emissions of atmospheric pollutants at the exit of the stacks of thermal power plants that operate under a variable regime of electric power generation based on the variables that typically are monitored during the operation of the plants. The recommended alternative to calculate the mass emiss...