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Browsing by Subject "Internal combustion engines"

Now showing items 1-20 of 23

A comprehensive methodology to analyse the Global Energy Balance in Reciprocating Internal Combustion Engines

Carreño Arango, Ricardo (Universitat Politècnica de València, 2016-11-02)

[EN] The main objective of this doctoral thesis is the development of a comprehensive methodology to perform and analyse the thermal balance of reciprocating engines, based on experimental and theoretical techniques. ...
An analysis of the in-cylinder pressure resonance excitation in internal combustion engines

Guardiola, Carlos; Pla Moreno, Benjamín; Bares-Moreno, Pau; Barbier, Alvin Richard Sebastien (Elsevier, 2018)

[EN] This paper analyses the in-cylinder pressure oscillations in internal combustion engines, which are initiated by combustion and resonate during the expansion stroke. A specific mathematical tool, which takes into ...
An Investigation of Radiation Heat Transfer in a Light-Duty Diesel Engine

Benajes Calvo, Jesus Vicente; Martín Díaz, Jaime; García Martínez, Antonio; Villalta Lara, David; Warey, Alok; Domenech Llopis, Vicente; Vassallo, Alberto Lorenzo; Vassallo (SAE International, 2015-09)

In the last two decades engine research has been mainly focused on reducing pollutant emissions. This fact together with growing awareness about the impacts of climate change are leading to an increase in the importance ...
Analysis of shock capturing methods for chemical species transport in unsteady compressible flow

Serrano Cruz, José Ramón; Climent, H.; Piqueras, P.; García Afonso, Óscar (Elsevier, 2013-04)

This paper presents a chemical species transport model to account for variable composition and gas properties along the flow path in internal combustion engines. The numerical solution to adapt the gas dynamic model to ...
Analytical Optimal Solution to the Energy Management Problem in Series Hybrid Electric Vehicles

Luján, José M.; Guardiola, Carlos; Pla Moreno, Benjamín; Reig, Alberto (Institute of Electrical and Electronics Engineers, 2018)

[EN] An optimal solution to the energy management problem in hybrid electric vehicles has been extensively addressed in the literature during the last decade, especially with the application of dynamic programming, the ...
Application of dynamic optimization and data fusion techniques for SCR control

Nakaema Aronis, André (Universitat Politècnica de València, 2020-12-19)

[ES] Los sistemas de postratamiento SCR son la solución más extendida para la reducción de emisiones de NOx en motores Diesel de automoción, pues permiten reducciones en las emisiones de NOx de hasta el 95%. En los últimos ...
Control del dosado en motores de encendido provocado en condiciones de cortocircuito

García Hostalet, Alfonso (Universitat Politècnica de València, 2016-10-28)

[EN] Modern turbocharged direct injection SI engines are usually fitted with VVT (camphasers) which allow varying the valve timing according to the control objectives. This may be used chiefly for two purposes: ¿ Improve ...
Cylinder charge composition observation based on in-cylinder pressure measurement

Guardiola, Carlos; Pla Moreno, Benjamín; Bares-Moreno, Pau; Stefanopoulou, Anna (Elsevier, 2019-01)

[EN] Accurate cylinder charge and composition estimation is crucial for proper combustion control, however, current sensors and models show different issues for transient estimation. The work presented in this paper combines ...
Design and implementation of the control system of an equipment aimed at reproducing variable environmental conditions on internal combustion engine tests

Blas Medina, Sergio (Universitat Politècnica de València, 2019-10-18)

[ES] Este proyecto presenta un equipo que permite reproducir las condiciones de presión, temperatura y humedad deseadas para emular condiciones de ensayo de motores de combustión. Durante el trabajo se detallan el principio ...
Development of an effective section model for extrapolating performance maps of twin turbines

Medina Tomás, Nicolás (Universitat Politècnica de València, 2019-10-29)

[ES] El uso de turbomáquinas radiales para sobrealimentar motores permite reducir fuertemente su consumo y emisiones contaminantes. En el caso de los motores por encendido provocado, es muy común aprovechar la energía ...
Experimental analysis and one-dimensional modeling of heat transfer phenomena in turbochargers for internal combustion engines

Dombrovsky, Artem (Universitat Politècnica de València, 2015-06-16)

[EN] Nowadays, the regulation of pollutant emissions of reciprocating internal combustion engines becomes more and more restrictive. One of the main strategies to reduce those emissions is the reduction of engine volume ...
Experimental study of the diesel spray behavior during the jet-wall interaction at high pressure and high temperature conditions

Peraza Ávila, Jesús Enrique (Universitat Politècnica de València, 2020-09-02)

[EN] The potential of diesel engines in terms of robustness, efficiency and energy density has made them widely used as power generators and propulsion systems. Specifically, fuel atomization, vaporization and air-fuel ...
Experimental verification of hydrodynamic similarity in hot flows

Torregrosa, A. J.; Broatch, A.; GARCIA TISCAR, JORGE; Roig-Villanueva, Ferran (Elsevier, 2020-11-01)

[EN] This paper examines a common hypothesis in the design of internal combustion engine exhaust lines, namely that the ratio of the total pressure drop across the line to the inlet dynamic head should be a function only ...
Experiments on the influence of intake conditions on local instantaneous heat flux in reciprocating internal combustion engines

Desantes, J.M.; Torregrosa, A. J.; Broatch, A.; Olmeda González, Pablo Cesar (Elsevier, 2011-01)

[EN] The present study tries to be a contribution for the development of more precise theoretical models for predicting the dissipation of heat through the combustion chamber walls of reciprocating (internal combustion) ...
Identificación de Modelos LPV para el Control de Sistemas No Lineales

Martínez Iranzo, Miguel Andrés; Salcedo Romero de Ávila, José Vicente (Universitat Politècnica de València, 2010-01-07)

[EN] In this paper we suggest a methodology for the identification of linear parameter time varying models (LPV), based on a previous local identification at some operating points, which presents a high degree of flexibility ...
Imagining the Future of the Internal Combustion Engine for Ground Transport in the Current Context

Serrano, J.R. (MDPI AG, 2017)

[EN] Internal Combustion Engines (ICEs) are the main propulsion systems for ground transport, both in on-road and off-road applications. By mid-2016, a special issue about ICEs for ground transport was announced, corresponding ...
Improvement and application of a methodology to perform the Global Energy Balance in internal combustion engines. Part 1: Global Energy Balance tool development and calibration

López, J. Javier; Payri, F.; Martín, J.; Carreño-Arango, Ricardo (Elsevier, 2018)

[EN] The increasingly stringent internal combustion engines emissions regulations, has led to the extended use of after-treatment systems, giving progressively more importance to the engine efficiency optimization. In ...
In-cylinder pressure based model for exhaust temperature estimation in internal combustion engines

Guardiola, Carlos; Olmeda, P.; Plá Moreno, Benjamín; Bares-Moreno, Pau (Elsevier, 2017)

[EN] Exhaust temperature is a valuable parameter for engine control. However, measurement conditions at the engine exhaust and the slow dynamic response of temperature sensors difficult the determination of the instantaneous ...
Integration of intermittent measurement from in-cylinder pressure resonance in a multi-sensor mass flow estimator

Guardiola, Carlos; Pla Moreno, Benjamín; Bares-Moreno, Pau; Peyton Jones, J.C. (Elsevier, 2019-09-15)

[EN] A novel technique of trapped mass determination, based on the in-cylinder pressure resonance, has been recently published by the authors. However, the method only works when sufficient resonance intensity exists and ...
Internal combustion engines with hydrogen

Ricart Jiménez, Martín (Universitat Politècnica de València, 2015-09-18)

This Final Project aims to realize a study on the internal combustion engines with hydrogen and its introduction on the viability of market. We must not confuse the internal combustion engine with hydrogen with fuel cell ...