Wyniki wyszukiwania - BazTech

1

Investigation of lubrication properties of petroleum fuel and biohydrocarbon blends

Gawron B., Karp G.

Journal of KONBiN

|

2016

|

No. 1 (37)

167--182

EN

The paper covers issues regarding lubricity of petroleum fuels used in piston and turbine engines, containing hydrocarbon biocomponents. Basing on available literature it can be said that the most prospective fuel components are biohydrocarbons. The paper describes effect of biohydrocarbons included in aviation fuel and diesel fuel on lubricity of such blends. The analysis covers two processes for obtaining biohydrocarbons, the HVO and the Fischer-Tropsch process. Due to problems with actual products acquiring, biohydrocarbons models representing chemically the actual ones from specific process. Lubricity testing was carried out according to standard test methods.

PL

Tematem publikacji są zagadnienia smarności paliw naftowych stosowanych do zasilania silników tłokowych i turbinowych zawierających biokomponenty węglowodorowe. Na podstawie przeglądu literatury można stwierdzić, że najbardziej perspektywicznymi komponentami do paliw są biowęglowodory. W artykule przedstawiono wpływ dodatku biowęglowodorów, do paliwa lotniczego oraz oleju napędowego, na smarność otrzymanych kompozycji. Analizie poddano dwie technologie otrzymywania biowęglowodorów: HVO oraz syntezę Fischera – Tropscha. Ze względu na trudności w pozyskaniu rzeczywistych produktów, przygotowano modele biowęglowodorów reprezentujące w sensie chemicznym rzeczywiste biowęglowodory z danej technologii. Badania w kierunku oceny właściwości smarnych zostały przeprowadzone w oparciu o znormalizowane metody badawcze.

2

Estimation of selected tribological properties of diesel fuel containing biocomponents

Nowiński E., Gawron B.

Journal of Achievements in Materials and Manufacturing Engineering

|

2015

|

Vol. 73, nr 2

110--117

EN

Purpose: The aim of this paper is to present differences of friction process occurred in research carried out on tribological apparatus with diesel fuel and biocomponent additives. The analysis of coefficient of friction and electrical resistance of kinematic pair took place. It was done for kinematic pair worked in pure diesel fuel and biofuel as a diesel fuel with fatty acid methyl ester (FAME) additives. Design/methodology/approach: The research were conducted on HFRR apparatus (dedicated for lubricity assessment of diesel fuel) and tribotester TR-2. The research were carried out with pure diesel fuel and diesel fuel with 5% and 10% (v/v) content of FAME. Findings: The results of the research indicate that on account of different construction of apparatus, the friction process assess on the basis of coefficient of friction and resistance is not identical. The FAME additive causes increase of resistance that is over the measuring range of HFRR apparatus. The fact leads to conclusion that standard assessment of lubricity should be replenish by additional analysis of coefficient of friction and kinematic pair resistance. Research limitations/implications: The research was conducted only for diesel fuel and mixtures of the fuel and FAME. Other fuels were not taken into account. Practical implications: The presented results can be used as a value directions in research development of fuels and biofuels properties. Originality/value: The standard research of fuel lubricity boils down to determine wear diameter. This paper indicates other, non-standard approach by additional parameters analysis as coefficient of friction and kinematic pair resistance that was done on tribometer TR-2.

3

Initial research of the effect of fame containing petroleum fuel blends storage on lubricity

Gawron B., Dzięgielewski W.

Journal of Polish CIMAC

|

2014

|

Vol. 9, no 2

35--43

EN

This paper describes the effect of fatty acid methyl esters (FAME) content in aviation fuels and diesel fuels on lubricity of such fuel blends. Standard petroleum fuels being currently in use contain various components, including the very important ones such as FAME and biohydrocarbons. The latter ones have been used also in aviation turbine fuels. Such use is, among others, associated with limiting of harmful combustion products emission. Lubricity, as one of important parameters related to fuel, directly effects on drive units use. Insufficient fuel lubricity effects probably on extended wear or injection system failure resulting in deterioration of combustion process, emission increase, and engine itself failure. Lubricity study included in this paper was carried out basing on standard test methods with HFRR and BOCLE. The paper describes the nature of lubricity change in relation to prepared fuel blends depending on FAME volume content, as well as the initial storage effect on test results.

4

Badania i ocena parametrów strugi paliw mineralnych i roślinnych zasilających silnik o zapłonie samoczynnym

Ambrozik T.

Zeszyty Naukowe Politechniki Świętokrzyskiej. Nauki Techniczne

|

2008

|

Z. 11

11-20

PL

W artykule przedstawiono wyniki badań i analizę wpływu podstawowych własności fizycznych paliw mineralnych i paliw pochodzenia roślinnego stosowanych do zasilania silnika AD3.152UR na podstawowe parametry strugi rozpylonego paliwa tj. zasięg i prędkość przedniego czoła strugi, kąt rozwarcia stożka wypływającej z rozpylacza strugi paliwa, średnią objętościowo-powierzchniową średnicę kropli, początkową prędkość wypływu paliwa z rozpylacza oraz dawkę paliwa wtryskiwanego podczas cyklu pracy silnika. Badania przeprowadzono na stanowisku hamownianym wyposażonym w system do pomiaru wielkości szybkozmiennych. Wykazano, że własności fizyczne paliwa wpływają na rozważane w pracy parametry strugi wtryskiwanego paliwa.

EN

The paper presents the research results and the analysis of the influence of the basic physical properties of the mineral fuels and biofuels used to fuel AD3.152 UR engine on the basic stream parameters of atomizing fuel (charge and velocity of stream front the atomizer, the mean volumetric and superficial diameter of a drop the initial speed of the fuel outflow from the atomizer and injected fuel charge during engine work cycle). Investigations were carried out at the test bench, which included measurement system fast changing quantities. The research shows that physical properties of engine fuel influence the mentioned stream parameters of atomizing fuel.