Wyniki wyszukiwania - BazTech

1

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.

2

Influence of agricultural engine fuelling mineral fuel and biofuels with on self-ignation delay in aspect of the environment

Orlińska M., Orliński S., Zaborowski J.

Logistyka

|

2014

|

nr 6

EN

Some information are presented in the paper concerning examination of self-ignation delay angle of URSUS-3520 engine with direct injection fuelled with hydrocarbon fuel EKODIESEL and comparable vegetable fuel Ester FAME, rape oil OR 100% and sunflower oil OSł 100%. Speed external characteristics were examined on engine test stand equipped with measuring system of quick-changing pressure. The aim of examination is to compare the influence of engine fuelling with low-sulphur hydrocarbon fuel and selected vegetable oils on angle of self-ignation delay what substantially effects combustion process and emission of exhaust gases toxic components.

PL

W artykule przedstawiono informacje z badań dotyczące kąta opóźnienia samozapłonu silnika URSUS- 3520 z wtryskiem bezpośrednim zasilanego węglowodorowym paliwem EKODIESEL oraz porównawczo paliwem roślinnym Ester FAME, olejem rzepakowym OR 100% oraz olejem słonecznikowym OSŁ 100%. Badania wykonano na bazie prędkościowej charakterystyki zewnętrznej z wykorzystaniem stanowiska hamownianego wyposażonego w system pomiarowy parametrów szybkozmiennych ciśnień. Wyniki badań przeprowadzono w celu porównania wpływu zasilania silnika niskosiarkowym paliwem węglowodorowym oraz wybranymi paliwami roślinnymi na kąt opóźnienia samozapłonu, co ma wpływ na proces spalania i wiąże się z emisją toksycznych składników spalin do otoczenia.

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.