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Aineistot 1-12 / 12

    • Antioxidant studies for animal-based fat methyl ester 

      Sirviö, K.; Niemi, S.; Vauhkonen, V.; Hiltunen, E. (Estonian University of Life Sciences, 2014)
      article
      The aim of this study was to test an antioxidant, BioSineox, for animal-based fat methyl ester, AFME, in order to determine the optimal concentration of this antioxidant for meeting the six-hour ...

    • B20 Fuel Compatibility with Steels in Case of Fuel Contamination 

      Sirviö, Katriina; Kaivosoja, Jonna; Nuortila, Carolin; Wang-Alho, Huaying; Niemi, Seppo; Ovaska, Teemu (MDPI, 11.08.2023)
      article
      This study evaluated the compatibility with steels for three B20 fuel samples blended from fossil diesel and used cooking oil methyl ester. One sample was untreated and its concentration of copper was analyzed as <1 ppm. ...

    • Calibration Method for the Determination of the FAME and HVO Contents in Fossil Diesel Blends Using NIR Spectroscopy 

      Wikberg, Elena; Heikkilä, Sonja; Sirviö, Katriina; Välisuo, Petri; Niemi, Seppo; Niemi, Antti (MPDI, 07.05.2021)
      article
      The European diesel fuel standard, EN590, allows a 7% (V/V) biodiesel (FAME) addition to automotive diesel fuel. The allowed addition of renewable diesel (HVO) to fossil diesel is not defined, as long as the properties of ...

    • Effects of storage on the properties of rapeseed oil and alcohol blends 

      Nuortila, Carolin; Heikkilä, Sonja; Help, Riikka; Suopanki, Helena; Sirviö, Katriina; Niemi, Seppo (Estonian University of Life Sciences, 2021)
      article
      Kinematic viscosity and density are important fuel properties because they influence fuel atomisation during injection into the engine cylinder. The viscosity and density of neat vegetable oils usually are too high to allow ...

    • Issues of various alternative fuel blends for off-road, marine and power plant diesel engines 

      Sirviö, Katriina (Vaasan yliopisto, 31.05.2018)
      Artikkeliväitöskirja
      The share of renewable energy needs to increase. The target is to have an at least 27% share for renewables in the energy consumption in Europe by 2030. This dissertation contributes to achieving said target by concentrating ...

    • Methanol-HVO blends for efficient low-temperature combustion : analytical research on fuel properties 

      Wang-Alho, Huaying; Sirviö, Katriina; Hissa, Michaela; Mikulsk, Maciej; Niemi, Seppo (Estonian University of Life Sciences, 01.09.2023)
      article
      Next-generation low-temperature combustion (LTC) engines can accommodate ultra-high efficiency with near-zero NOx and PM emissions. Reaction kinetics is the governing mechanism in LTC. Onboard fuel reactivity control is, ...

    • Nonvolatile ultrafine particles observed to form trimodal size distributions in non-road diesel engine exhaust 

      Kuuluvainen, Heino; Karjalainen, Panu; Saukko, Erkka; Ovaska, Teemu; Sirviö, Katriina; Honkanen, Mari; Olin, Miska; Niemi, Seppo; Keskinen, Jorma; Rönkkö, Topi (Taylor&Francis, 31.07.2020)
      article
      Some recent findings regarding the negative health effects of particulate matter increase the relevance of the detailed characteristics of particulate emissions from different sources and especially the nonvolatile fraction ...

    • Properties of local produced animal-fat based biodiesel and its blend with fossil fuel 

      Sirviö, K.; Heikkilä, R.; Help, R.; Niemi, S.; Hiltunen, E. (Estonian Agricultural University, 2018)
      article
      In the near future, more emphasis must be put on reducing greenhouse gas (GHG) emissions in road transportation, house heating, agricultural activities, marine transport etc. This study concentrated on the use of alternative ...

    • Role of lubricating oil properties in exhaust particle emissions of an off-road diesel engine 

      Ovaska, Teemu; Niemi, Seppo; Sirviö, Katriina; Nilsson, Olav; Karjalainen, Panu; Rönkkö, Topi; Kulmala, Kari; Keskinen, Jorma (SAE International, 14.04.2020)
      article
      Particle number emissions from an off-road diesel engine without exhaust after-treatment were studied by using five different heavyduty lubricating oils in the engine. The study extends understanding on how the properties ...

    • Selected Fuel Properties of Alcohol and Rapeseed Oil Blends 

      Nuortila, Carolin; Help, Riikka; Sirviö, Katriina; Suopanki, Helena; Heikkilä, Sonja; Niemi, Seppo (Molecular Diversity Preservation International (MDPI), 25.07.2020)
      article
      The alcohols ethanol and 1-butanol are interesting options as blending components for renewable fuels. We studied whether it is possible to mix these alcohols with a little refined material, rapeseed oil, to obtain stable ...

    • Storage stability of rapeseed methyl ester stored in a sealed barrel for seven year 

      Heikkilä, Sonja; Sirviö, Katriina; Nuortila, Carolin; Niemi, Seppo (Estonian University of Life Sciences, 2021)
      article
      Storage stability is one of the main quality parameters related to fatty acid methyl esters (FAME) biofuels. The deterioration of biofuels´ properties during storage is a more serious issue than with conventional fuels. ...

    • The effect of sulphur content on B20 fuel stability 

      Sirviö, Katriina; Niemi, Seppo; Heikkilä, Sonja; Hiltunen, Erkki (Estonian University of Life Sciences, 2016)
      article
      The aim of this study was to investigate if a high amount of sulphur is favourable for the fuel blends' storage stability. The parameters that correlate with the storage stability of the fuel blends were compared with two ...