Celso ArgachoyInsper Institute of Education and Research · Engineering
D.Sc. in Aeronautical and Mechanical Engineering - ITA
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Citations since 2017
1 Research Item
February 2021 - present
- Part time Professor
- Part time Lecturer of engineering disciplines (Thermodynamics, Vehicle Propulsion Systems, Electric, Hybrid and Autonomous Vehicles).
November 2013 - March 2016
- Professor (Full)
- Coordinator for Technology Transfer at the Research Project: "Conceptual Study of an Advanced Ethanol-Fueled Engine" (FAPESP nr. 2013-50238-3). Associated Institutions: ITA (Instituto Tecnológico de Aeronáutica), EPUSP, UNICAMP.
November 2008 - December 2017
- Professor of engineering courses since February/2013 and in the specialization program of Automotive Engineering since 2008. Research and development activities in automotive engineering.
August 2001 - December 2004
ITA - Technological Institute of Aeronautics
Field of study
March 1998 - April 2001
ITA - Technological Institute of Aeronautics
Field of study
February 1982 - December 1986
IMT – Maua Institute of Technology
Field of study
- Mechanical Engineering
Object of the research: identify the influences of thermal expansion ratio, flame thickness, global activation energy, mixture Lewis number, and global stretch rate on the generation of hydrodynamic and diffusional-thermal cells over the flame surface of biomass syngas/CH4 mixtures.
The role of the engine brake is to convert a power-producing engine into a power-absorbing retarding mechanism. Modern heavy-duty vehicles are usually equipped with a compression braking mechanism that augments their braking capability and reduces the wear of the conventional friction brakes. This work presents an engine brake mechanism modeling an...
The environmental legislations are challenging the engine manufacturers to redesign their products in order to attend the new requirements. A variety of solutions are being implemented to achieve cleaner emissions and reduce the fuel consumption. The recirculation of the exhaust gases (EGR), re-burning a part of them is being widely used by the aut...
Internal combustion engine noise and vibration is a major issue for car makers, and this is even more important for High-Level Pick-ups and SUV’s which applies the modern diesel engines. One important player in this scenario is the second-order unbalanced forces vibration produced for the conventional inline 4 cylinder engine configurations, which...
Diesel combustion is a complex, turbulent, tree-dimensional, multiphase process that occurs in a high-temperature and high-pressure environment. For the Diesel combustion studies the knowledge of the temperatures in the different areas of the fuel spray after the ignition process is fundamental. Starting from the knowledge of such temperatures, it...
Withdrawal of heat from internal combustion engines is a major concern in today's automotive industry, mainly due to material constraints and components durability, in such a way that a well-designed cooling system may increase engine's reliability. In this sense, a numerical study is conducted to analyze the water flow inside MWM INTERNATIONAL’s h...
In this work the use of micro-hole Diesel injectors was investigate as a strategy to reduce de particulate matter. This study examined the use of injector tip with 18 micro holes of 0.13 mm diameter in comparison with a conventional EURO III (CONAMA P5) injector with 6 holes of 0.226 mm diameter. The micro holes were grouped in 6 groups of 3 holes....
The use of hydrogen as an energy carrier in Brazil is discussed. An overview is presented of how the hydrogen can be used for energy transport in the same way such as electricity and other fuels are. Hydrogen is mostly found in water, hydrocarbons, methane, alcohol and coal. The energy used to extract hydrogen from a substance is much higher than t...
The traditional techniques used in heat transfer evaluation in a bus design combines analytical and empirical methods, which are most of times imprecise for heat balance analysis. To compensate this limitation, reduced scale models are used however they may present many limitations due to similarity problems. As a result of this, the most reliable...
The work presents a theoretical and an experimental analysis of the droplet size distribution in the spray generated by the injectors of an internal combustion Diesel engine. The theoretical analysis has been made through a simple droplet size distribution function derived by applying the Maximum Entropy Principle to the atomization process, along...
A new phenomenological model is introduced by applying established conceptual models for direct injection combustion to develop a mathematical description of events. The model has the capability to predict particulate mass output, as well as a particulate mass history over a single combustion event. The model was developed in a Matlab-Simulink envi...
Constantly increasing market demands for greater power and torque combined with greater fuel economy, increasingly difficult installation conditions caused by demands for greater comfort and last but not least the constant demand for reduced costs and weight have prompted PTU (Powertrain Business Unit) and Mercedes-Benz Brazil to develop new engine...
The project intends to investigate the application of the concept of Ducted Fuel Injection (DFI) concept presented in the work of MUELLER et al. (2017) after experimental evaluations in a constant-volume combustion vessel. The concept is to make the fuel spray pass through a small cylindrical duct immediately after leaving the injection hole, improving the premix phase in the fuel auto-ignition zone compared to the conventional system where the spray is directly released into the combustion bowl. The work will extend the analysis of the DFI concept to a single-cylinder Diesel engine in the LCPE (Combustion, Propulsion and Energy Laboratory of ITA), evaluating the effective soot reduction under certain engine operating conditions, as well as other effects of DFI application.
Identify the influences of thermal expansion ratio, flame thickness, global activation energy, mixture Lewis number, and global stretch rate on the generation of hydrodynamic and diffusional-thermal cells over the flame surface of biomass syngas/CH4 mixtures.
The requirement to reduce CO2 and other pollutants emissions from internal combustion engines suggests the increase in the use of biofuels. Ethanol, with its production technology already established in Brazil can contribute to this goal. However, due to its resistance to self-ignition, its extensive use has been limited to spark ignition engines (Otto cycle). The use of ethanol in compression-ignition (Diesel cycle) offers a significant potential to improve their performance in addition to its benefits to the environment inherent to the oxygen present in its composition. The proposed research aims to improve the understanding of the ignition process induced by a heated surface (glow plug) on the Diesel cycle engine combustion chamber, in order to develop an ignition strategy for these engines running with hydrous ethanol to optimize the yield of the use of this fuel. The investigation focuses on basic parameters regarding the glow plug, such as its temperature and its relative placement in the combustion chamber. The fuel injection strategy will be optimized, especially in relation to pressure and injection rate. For the studies about the iteration between the fuel spray and the hot surface of the glow plug, experiments will be mad in an isovolumetric chamber at LCPE – Laboratory of Combustion, Propulsion and Energy of ITA - Technological Institute of Aeronautics, which will support this project.