The effect of ethanol blending on mixture formation, combustion and soot emission studied in an optical DISI engine

M Storch, F Hinrichsen, M Wensing, S Will, L Zigan - Applied energy, 2015 - Elsevier
In various research studies, ethanol blended fuels have shown reduced particulate matter
(PM) emissions in comparison to gasoline and its surrogate fuels in direct-injection spark …

Investigation of soot formation and oxidation of ethanol and butanol fuel blends in a DISI engine at different exhaust gas recirculation rates

M Koegl, B Hofbeck, S Will, L Zigan - Applied Energy, 2018 - Elsevier
The soot formation and in-cylinder soot oxidation in an optically accessible DISI-engine is
analyzed for gasoline-ethanol and-butanol mixtures. The volumetric extinction measurement …

Investigation of soot formation of spark-ignited ethanol-blended gasoline sprays with single-and multi-component base fuels

M Storch, M Koegl, M Altenhoff, S Will, L Zigan - Applied Energy, 2016 - Elsevier
Soot formation in DISI-(direct-injection spark-ignition) sprays is analyzed for ethanol-
mixtures under stratified charge conditions. The investigation is conducted in a constant …

Fluorescence characteristics of organic tracer molecules for planar laser-induced fluorescence studies in internal combustion engines, part A: non-aromatics

S Nayek, M Mittal - Applied Physics B, 2024 - Springer
Tracer based planar laser-induced fluorescence (PLIF) has emerged as a powerful in-situ
measurement technique with a considerable spatial and temporal resolution for Internal …

Quantitatively OH-PLIF measurements in laminar diffusion flames of n-heptane at elevated pressures

B Li, Y Wu, H Wei, L Zhou - Fuel, 2024 - Elsevier
In the hydrocarbon fuel combustion, OH radicals play an important role, participating in most
of the radical reactions and marking the location of the combustion product region. In this …

Phosphor thermometry in turbulent hot gas flows applying Dy: YAG and Dy: Er: YAG particles

G Jovicic, L Zigan, S Will… - Measurement Science and …, 2014 - iopscience.iop.org
In order to improve the phosphorescence emission behavior of phosphor powders for
temperature measurements in a gas flow, the activator concentration in Dy: YAG was varied …

Characterization of fuel/water mixtures and emulsions with ethanol using laser-induced fluorescence

M Koegl, C Mull, YN Mishra, S Will, L Zigan - Applied optics, 2020 - opg.optica.org
In charged spark-ignition engines, additional water injection allows for the reduction of
temperature under stoichiometric mixture conditions. However, a higher complexity of the …

Spray-induced temperature stratification dynamics in a gasoline direct-injection engine

B Peterson, E Baum, B Böhm, V Sick… - Proceedings of the …, 2015 - Elsevier
Simultaneous applications of high-speed toluene-LIF thermometry and PIV at kHz rates
were utilized to investigate the evolution of gas temperature stratification imposed from direct …

Analysis of LIF and Mie signals from single micrometric droplets for instantaneous droplet sizing in sprays

M Koegl, B Hofbeck, K Baderschneider, YN Mishra… - Optics …, 2018 - opg.optica.org
Planar droplet sizing (PDS) is a technique relying on the assumption that laser-induced
fluorescence (LIF) and Mie scattering optical signals from spherical droplets depend on their …

Analysis of ethanol and butanol direct-injection spark-ignition sprays using two-phase structured laser illumination planar imaging droplet sizing

M Koegl, YN Mishra, M Storch… - … Journal of Spray …, 2019 - journals.sagepub.com
This paper reports on the spray structure of the biofuels, ethanol, and butanol generated by
a multihole direct-injection spark-ignition injector, which is studied in a constant volume …