A5024351499- Advanced Combustion Engine Technologies
- Catalytic Processes in Materials Science
- Biodiesel Production and Applications
- Combustion and flame dynamics
- Vehicle emissions and performance
- Atmospheric chemistry and aerosols
- Electrochemical Analysis and Applications
- Ammonia Synthesis and Nitrogen Reduction
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Combustion and Detonation Processes
- Thermochemical Biomass Conversion Processes
- Heat transfer and supercritical fluids
- Real-Time Systems Scheduling
- Industrial Gas Emission Control
- Subcritical and Supercritical Water Processes
- Carbon Nanotubes in Composites
- Interconnection Networks and Systems
- SAS software applications and methods
- Petroleum Processing and Analysis
- Chemical Thermodynamics and Molecular Structure
- VLSI and Analog Circuit Testing
- X-ray Spectroscopy and Fluorescence Analysis
- Parallel Computing and Optimization Techniques
- Distributed and Parallel Computing Systems
Norwegian University of Science and Technology
2016-2023
Queen Mary University of London
2013-2015
This study investigates the characteristics of a compression ignition engine fuelled by ammonia and diesel in high-pressure dual fuel mode. The focuses on effect injection strategies performance important emissions like NH3, NO/NO2 N2O. was operated with fixed intake air conditions at an speed 1500 rpm for all operating points, liquid directly injected 180 bar using GDI injector. energy shares tested were 40 %, 50 % 60 %. Various combustion modes achieved fixing timing −15 CAD aTDC varying...
Ammonia is a promising alternative fuel that can replace current fossil fuels. Hydrogen carrier, zero carbon base emissions, liquid unlike hydrogen, and be produced using renewable resources, making ammonia future green for the internal combustion engine. This study aims to show procedure of utilizing as primary with biodiesel in dual-fuel mode. Hence, single-cylinder diesel engine was retrofitted inject into intake manifold, then pilot dose sprayed cylinder initiate premixed ammonia-air...
In this study, we investigated the effects of power ultrasound (26 kHz, up to ∼75 W/cm2, 100% acoustic amplitude, ultrasonic horn) on hydrogen evolution reaction (HER) a platinum (Pt) polycrystalline disc electrode in 0.5 M H2SO4 by cyclic and linear sweep voltammetry at 298 K. We also studied formation molecular (H2) bubbles Pt wire absence presence using ultra-fast camera imaging. It was found that significantly increases currents towards HER i.e. ∼250% increase current density achieved...
Quantitative measurements of combustion and in-flame soot in hydrotreated vegetable oil (HVO), biodiesel (rapeseed methyl ester [RME]) diesel fuel spray flames are presented this study. The were performed a compression ignition chamber with optical access having engine-like thermodynamic conditions. simultaneously employed techniques high-speed diffuse back-illuminated light extinction imaging for measuring the depth (KL) soot, OH* chemiluminescence high temperature reaction zones. results...
This study examines glycerol as an additive to diesel fuel demonstrate it has the potential suppress formation of soot/PM. The investigation a diesel/glycerol emulsion included engine trial, high-speed imaging in optical combustion chamber and fundamental chemical kinetic examining soot precursor formation. had longer ignition delay but higher AHRR with increasing load. There was no impact on brake thermal efficiency. CO THC were at lower loads. emitted smaller number particles diameters...
This paper presents the performance and emissions contours of a hydrogen dual fueled compression ignition (CI) engine with two pilot fuels (diesel rapeseed methyl ester), compares iso-contours diesel ester (RME) single fueling RME piloted throughout engines operating speed power range.The collected data have been used to produce thermal efficiency, volumetric specific oxides nitrogen (NO X ), hydrocarbons (HC) carbon dioxide (CO 2 ) on power-speed plane.The emission maps are experimentally...
This study investigates in-flame sooting characteristics of biodiesel surrogates in compression-ignited spray flames. The aim the is to produce reliable experimental data on soot for validation kinetic mechanisms and models. A rapeseed oil [rapeseed methyl ester (RME)] was compared neat oleate (MO) decanoate (MD). In addition, n-heptane chosen as a baseline fuel effect blending MD production investigated. performed single-cylinder research engine with optical access single varying ambient...
This study aims towards quantifying of the flow in an optically accessed compression ignition engine using computational fluid dynamic simulations. The test rig serves to investigate different fuels and allows for spray propagation observation in-flame soot measurements. Computational simulations were employed effects geometrical modifications order obtain optimal conditions fuel injection. should be quiescent enough avoid affecting but effectively remove flue gasses after combustion prevent...
In this work, we numerically investigate the potential of glycerol as a diesel fuel additive to reduce soot emissions. Many different additives offer environmental benefits, since there is surplus supply by-product biodiesel production, it considered promising available candidate. The combustion process in direct injection compression ignition engine has been previously investigated experimentally for 10 % (vol) emulsion. Based on experimental set-up, zero-dimensional Stochastic Reactor...
Particulate matter (PM) has been sampled from a compression ignition engine using differential mobility spectrometer (Cambustion DMS 500) and for imaging in transmission electron microscope (TEM) with the aim of coupling these two measuring techniques.A known issue when methods is that devise like samples all PM, TEM only soot.To help resolve this issue, thermal denuder was designed built to remove volatile organic compounds (VOC) sample prior entering DMS.For imaging, soot either collected...