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Listar por palabra clave "Engine efficiency"

Mostrando ítems 1-17 de 17

A computational analysis of the impact of bore-to-stroke ratio on emissions and efficiency of a HSDI engine

Benajes, Jesús; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel; Hernández-López, A.; Duverger, T. (Elsevier, 2017-11-01)

[EN] Research on combustion systems for Internal Combustion Engines (ICE) is guided by the necessity of improving engine efficiency while achieving the pollutant regulations. In this framework, this study identifies and ...
A one-dimensional modeling study on the effect of advanced insulation coatings on internal combustión engine efficiency

Broatch, A.; Olmeda, P.; Margot, Xandra Marcelle; Gómez-Soriano, Josep (SAGE Publications, 2021-07-01)

[EN] This article presents a study of the impact on engine efficiency of the heat loss reduction due to in-cylinder coating insulation. A numerical methodology based on one-dimensional heat transfer model is developed. ...
Analysis of the combustion process, pollutant emissions and efficiency of an innovative 2-stroke HSDI engine designed for automotive applications

Benajes Calvo, Jesus Vicente; Novella Rosa, Ricardo; De Lima Moradell, Daniela Andreina; Tribotte, Pascal; Quechon, Nicolas; Obernesser, Philippe; Dugue, Vincent (Elsevier, 2013-09)

[EN] On the last years engine researchers has been focused on improving engine efficiency in order to decrease CO2 emissions and fuel consumption, while fulfilling the increasingly stringent pollutant emissions regulations. ...
Assessment of the effect of low viscosity oils usage on a light duty diesel engine fuel consumption in stationary and transient conditions

Macian Martinez, Vicente; Tormos Martínez, Bernardo Vicente; Bermúdez, Vicente; Ramírez Roa, Leonardo Andrés (Elsevier, 2014-11)

Regarding the global warming due CO2 emissions, the crude oil depletion and its corresponding rising prices, OEMs are exploring different solutions to increase the internal combustion engine efficiency, among which, the ...
Computational optimization of the combustion system of a heavy duty direct injection diesel engine operating with dimethyl-ether

Benajes, Jesús; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel; Hernández-López, Alberto; Kokjohn, Sage L. (Elsevier, 2018)

[EN] A genetic algorithm optimization methodology is applied to the design of the combustion system of a heavy-duty diesel engine fueled with dimethyl ether (DME). The optimization includes the key combustion system related ...
Evaluation of massive exhaust gas recirculation and Miller cycle strategies for mixing-controlled low temperature combustion in a heavy duty diesel engine

Benajes Calvo, Jesus Vicente; Molina Alcaide, Santiago Alberto; Novella Rosa, Ricardo; Belarte Mañes, Eduardo (Elsevier, 2014)

The future of compression ignition engines depends on their ability for keeping their competitiveness in terms of fuel consumption compared to spark-ignition engines. In this competitive framework, the Low Temperature ...
Experimental Characterisation of Real Driving Cycles in Diesel Passenger Vehicles under Different Environmental Conditions

Redondo Puelles, Fernando (Universitat Politècnica de València, 2023-09-01)

[ES] El futuro de los Motores de Combustión Interna en el sector de la automoción parece incierto, en cierta medida, debido a los cambios recientes en las normativas de homologación. Las regulaciones actuales han reducido ...
HD Diesel engine equipped with a bottoming Rankine cycle as a waste heat recovery system. Part 1: Study and analysis of the waste heat energy

Dolz Ruiz, Vicente; Novella Rosa, Ricardo; García Martínez, Antonio; Sánchez Serrano, Jaime (Elsevier, 2012-04)

This paper describes the study of different bottoming Rankine cycles with water-steam and/or ORC configurations in classical and innovative setups such as a waste heat recovery system in a Heavy Duty Diesel (HDD) Engine. ...
HD Diesel engine equipped with a bottoming Rankine cycle as a waste heat recovery system. Part 2: Evaluation of alternative solutions

Serrano Cruz, José Ramón; Dolz Ruiz, Vicente; Novella Rosa, Ricardo; García Martínez, Antonio (Elsevier, 2012-04)

A theoretical investigation has been performed on the feasibility of introducing a waste heat recovery (WHR) system in a two-stage turbocharged HDD engine. The WHR is attained by introducing a Rankine cycle, which uses an ...
Impact of Cylinder-to-Cylinder Dispersion of Exhaust Gas Recirculation on the Three-Way Catalyst Performance and Tailpipe Emissions of Spark-Ignition Engines

Piqueras, P.; De La Morena, Joaquín; Sanchis, Enrique José; Conde-Cortabitarte, Carla (ASME International, 2024-04-01)

[EN] New generations of spark-ignition engines include exhaust gas recirculation (EGR) to improve the engine efficiency. Depending on the design of the EGR routing, some differences in the total amount of recirculated gases ...
Impact of injection settings operating with the gasoline Partially Premixed Combustion concept in a 2-stroke HSDI compression ignition engine

Benajes, Jesús; Novella Rosa, Ricardo; De Lima, D.; Thein, Kévin Jean Lucien (Elsevier, 2017-05-01)

[EN] Partially Premixed Combustion (PPC) using gasoline-like fuels has proven its potential to control or even break the NOx and soot emissions trade-off, retaining the high efficiency levels characteristic of the conventional ...
Implementation of the Partially Premixed Combustion concept in a 2-stroke HSDI diesel engine fueled with gasoline

Benajes Calvo, Jesus Vicente; Molina Alcaide, Santiago Alberto; Novella Rosa, Ricardo; De Lima Moradell, Daniela Andreina (Elsevier, 2014-06-01)

Partially Premixed Combustion (PPC) of fuels in the gasoline octane range has proven to combine low NOX and soot emissions with high indicated efficiencies, while still retaining control over combustion phasing with the ...
Miller cycle for improved efficiency, load range and emissions in a heavy-duty engine running under reactivity controlled compression ignition combustion

Molina, Santiago; García Martínez, Antonio; Monsalve-Serrano, Javier; Estepa-Ruiz, Daniel (Elsevier, 2018-05-25)

[EN] The low temperature, premixed combustion strategies are being investigated in the recent years as a mean to break the NOx-soot trade-off appearing during the diffusive conventional diesel combustion. This approach ...
Numerical Optimization of an Ejector for Waste Heat Recovery Used to Cool Down the Intake Air in an Internal Combustion Engine

Galindo, José; Gil, A.; Dolz, Vicente; Ponce-Mora, Alberto (American Society of Mechanical Engineers, 2020-10-01)

[EN] In the present paper, a numerical investigation of a jet-ejector is carried out using a real gas model of R1234yf. The prototype under investigation works with specific operating conditions of a jet-ejector refrigeration ...
Operating range extension of RCCI combustion concept from low to full load in a heavy-duty engine

Molina Alcaide, Santiago Alberto; García Martínez, Antonio; Pastor Enguídanos, José Manuel; Belarte Mañes, Eduardo; Balloul, I. (Elsevier, 2015-04-01)

Fuel reactivity controlled compression ignition (RCCI) concept has arisen as a solution to control premixed combustion (PCI) strategies, which avoids soot and NOx formation by promoting a lean air fuel mixture and low ...
Potential of low viscosity oils to reduce CO2 emissions and fuel consumption of urban buses fleets

Macian Martinez, Vicente; Tormos Martínez, Bernardo Vicente; Ruiz Rosales, Santiago; Ramirez, Leonardo Andrés (Elsevier, 2015-08)

This paper shows the results of a comparative fleet test the main objective of which was to measure the influence of Low Viscosity Oils (LVO) over the fuel consumption and CO2 emissions of urban buses. To perform this test, ...
Understanding the performance of the multiple injection gasoline partially premixed combustion concept implemented in a 2-Stroke high speed direct injection compression ignition engine

Benajes Calvo, Jesus Vicente; Martín Díaz, Jaime; Novella Rosa, Ricardo; Thein, Kévin Jean Lucien (Elsevier, 2016-01-01)

The newly designed Partially Premixed Combustion (PPC) concept operating with high octane fuels like gasoline has confirmed the possibility to combine low NOx and soot emissions keeping high indicated efficiencies, while ...