Blar i NTNU Open på forfatter "Bjørgen, Karl Oskar Pires"
-
Ammonia Spray Characterization
Borsheim, Nina (Master thesis, 2023)Det er et økende fokus på å få ned klimautslipp, og et ønske om å minske forurensning knyttet til transport og forbrenning. Dette har gjort ammoniakk til et potensielt lovende karbonfritt drivstoff for forbrenningsmotoren, ... -
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 ... -
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 investigation of carbon nanotube photo ignition for combustion in ICEs
Bratsberg, Stian Ranøyen (Master thesis, 2022)Denne masteroppgaven er en del av prosjektet NanoIgnite, der målet er å undersøke mulighet for å antenne alternative drivstoff, slik som ammoniakk eller hydrogen, ved bruk av fotoantenning av nanorør av karbon. Det ble ... -
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, ... -
LDV Measurements in Centrifugal Pump Diffuser
Bjørgen, Karl Oskar Pires (Master thesis, 2015)This thesis describes experimental research on the flow inside a vaned diffuser of a centrifugal pump. The measurements were conducted inside one of the ten curved diffuser channels on the single-stage centrifugal pump ... -
New Renewable Hydrothermal Liquefaction (HTL) Biofuel: A Combustion and Emissions Study in an Optical Engine
Khare, Shivang; Bjørgen, Karl Oskar Pires; Kohansal, Komeil; Haider, Muhammad Salman; Castello, Daniele; Pedersen, Thomas Helmer; Løvås, Terese; Emberson, David Robert (Journal article; Peer reviewed, 2023)This study involves the investigation of municipal solid waste (MSW) based biofuel in order to demonstrate its utilization as a diesel blendstock in a compression ignition (CI) engine. The biofuel was produced from the ... -
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 ... -
Optical Study of Soot Characteristics of Biofuel Spray Combustion
Bjørgen, Karl Oskar Pires (Doctoral theses at NTNU;2020:117, Doctoral thesis, 2020)Liquid biofuels for internal combustion engines will likely be part of the future solution for mitigating CO2 emissions to the atmosphere. Several types of biofuels for compression ignition (CI) engines are being developed ...