Browsing NTNU Open by Author "Emberson, David"
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Detailed examination of the combustion of diesel and glycerol emulsions in a compression ignition engine
Emberson, David; Wyndorps, Jan; Ahmed, Ahfaz; Bjørgen, Karl Oskar Pires; Løvås, Terese (Peer reviewed; Journal article, 2021)This study examines glycerol as an additive to diesel fuel to demonstrate it has the potential to suppress the formation of soot/PM. The investigation of a diesel/glycerol emulsion included an engine trial, high-speed ... -
Detailed Study of LED Diffuse Back Illumination for Soot Measurements in an Optical Combustion Chamber
Olsen, Mathias Solberg (Master thesis, 2017)An optical accessible compression ignition engine is under development at the engine suite at EPT, NTNU. The purpose of the new optical engine is to measure soot formation during the combustion process. In the search of ... -
Development of an Experimental Setup for Ultrasound Aided Electrolysis of Liquid Ammonia
Anderson, Lasse Borg (Master thesis, 2021)Ammoniakk kan splittes og dermed forme en gass som inneholder ammoniakk, hydrogen og nitrogen. Denne gassen kan brukes som drivstoff, uten å lede til noe karbon-basert utslipp under forbrenning. I dette arbeidet er et ... -
Diffuse Back-Illuminated Extinction Imaging of Soot: Effects of Beam Steering and Flame Luminosity
Bjørgen, Karl Oskar Pires; Emberson, David; Løvås, Terese (Journal article; Peer reviewed, 2019)This study presents diagnostic development of diffuse backilluminated extinction imaging of soot. The method provides high temporal and spatial resolution of the line-of-sight optical density of soot (KL) in compression-ignited ... -
Experimental Study of Ignition Delay, Combustion, and NO Emission Characteristics of Hydrogenated Vegetable Oil
Krivopolianskii, Vladimir; Bjørgen, Karl Oskar Pires; Emberson, David; Ushakov, Sergey; Æsøy, Vilmar; Løvås, Terese (Journal article; Peer reviewed, 2019)In this article, a comparative study of hydrogenated vegetable oil (HVO) and diesel was performed in two constant volume combustion rigs and an optical accessible compression-ignited chamber (OACIC). Ignition, combustion, ... -
Investigation of Compression Ignition Combustion of Glycerol-Diesel Fuel Emulsions
Wyndorps, Jan (Master thesis, 2019)With Biodiesel production having established in the past century, there is an ongoing interest to add value to its abundant by-product glycerol. With regard to a shortly closed product cycle, its utilisation in the fuel ... -
Numerical investigation of glycerol/diesel emulsion combustion in compression ignition conditions using Stochastic Reactor Model
Lewandowski, Michal; Netzer, Corinna; Emberson, David; Løvås, Terese (Peer reviewed; Journal article, 2022)In this work, we numerically investigate the potential of glycerol as a diesel fuel additive to reduce soot emissions. Many different fuel additives offer environmental benefits, since there is a surplus supply of glycerol ... -
On Soot Sampling: Considerations when Sampling for TEM Imaging and Differential Mobility Spectrometer
Emberson, David; Rohani, Behzad; Wang, Liang; Sæterli, Ragnhild; Løvås, Terese (Journal article; Peer reviewed, 2019)Particulate matter (PM) has been sampled from a compression ignition engine using a differential mobility spectrometer (Cambustion DMS 500) and for imaging in a transmission electron microscope (TEM) with the aim of coupling ... -
Optical Measurements of In-Flame Soot in Compression-Ignited Methyl Ester Flames
Bjørgen, Karl Oskar Pires; Emberson, David; Løvås, Terese (Journal article; Peer reviewed, 2019)This study investigates in-flame sooting characteristics of biodiesel surrogates in compression-ignited spray flames. The aim of the study is to produce reliable experimental data on in-flame soot for validation of kinetic ... -
Varying Ignition Quality of a Fuel for a HCCI Engine Using a Photochemically-Controlled Additive: The Development of a ‘Smart’ Fuel
Emberson, David; Sandquist, Judit; Løvås, Terese; Schönborn, Alessandro; Saanum, Inge (Peer reviewed; Journal article, 2021)This study examines the possibility to provide control over ignition timing in a homogeneous charge compression ignition engine (HCCI) using a fuel additive whose molecular structure can be adapted upon exposure to UV ...