Wieslawa Urzedowska's research while affiliated with Oil and Gas Institute and other places
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Publications (9)
It is well known that the reduced stability of FAME diesel fuel blends is of particular threat to diesel engines and especially high pressure common rail (HPCR) systems operation. As has been ascertained, internal diesel injector deposits are more likely to form in modern diesel fuel systems because of their higher operating pressures and temperatu...
Two com. gas oils were modified by addn. of a corn. fatty acid Me ester (20 or 30%), conditioned for 16 weeks at 20 degrees C and 60 degrees C and tested in an engine (load 50-100 Nm, rotation 1000-3800 rpm) to det. the torque changes and smoke content in the exhaust gas. The poor biodiesel stability in storage constituted a potential threat to eng...
In the Diesel sector the fatty acid methyl esters (FAME’s) – in Europe mostly RME *) (rapeseed methyl ester) and in US mostly
SME (soja oil methyl ester) – are used as a various share, % volume blends with the Diesel fuel (B5, B7, B10, B20, Bxx).
The present joint project focuses on RME being the most important representative of the biofuels of 1st...
Corn. fatty acid Me ester (FAME) was added to corn. gas oil and used for driving the Diesel engine equipped with modern common rail-type fuel injection system operated under std. conditions. Engine output torque, exhaust gas quality (particulate matter) and changes of quality of lubricating oils (viscosity, acid no., oxidn. stability) were detd. Ap...
The project is a response to increasing international requirements regarding air quality standards and the European Union demand for increased biofuels share in the fuel market. The project is of great economic and social importance because of steadily increasing number of vehicles on roads. Application of the project results in economy can in long...
The paper describes significant problems related to influence of Diesel biofuels on engine lube oil deterioration. It was demonstrated by monitoring the engine oil aging and performance changing during its operation in modern high speed direct injection (HSDI) light duty (LD) engine through the use of bench tests. This engine has been equipped with...
W artykule opisano istotne problemy związane z wpływem różnej zawartości biokomponentów
(FAME) w paliwach do silników z zapłonem samoczynnym na procesy degradacji smarowego
oleju silnikowego. Przedstawiono zmiany właściwości użytkowych oleju silnikowego podczas
jego monitorowanej eksploatacji w testach stanowiskowych nowoczesnego silnika
wysokopręż...
Six lubricating oil-motor fuel pairs were tested for changes of kinematic and dynamic viscosity, acid no. and thin-layer oxidn. resistance for 400 h. The presence of biocomponents in the fuel resulted in an accelerated degrdn. of the fuel.
Citations
... found that the rapid deterioration of carbon deposition index would occur when the oxidation induction period of the aged biodiesel was zero; however, biodiesel with high oxidation stability produced less carbon deposition. Urzedowska et al (Urzedowska and Stepien 2016). found that the carbon accumulation rate of auto-oxidized biodiesel on the injector was faster than that of unoxidized biodiesel. ...
... The term oil aging means a combination of various processes that result in changes in the chemical and physical properties of engine oil [5,12]. Oil aging occurs for two main reasons: internalcaused by destabilization of oils (oxidation, polymerization) and externalcaused by contamination of oil with mechanical impurities, as well as water or fuel [3,8,13]. ...
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