Wyniki wyszukiwania - BazTech

1

Lubricating oil properties – effect of using high acidity fuel

Piaszyk J., Wyszynski M. L.

Combustion Engines

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2013

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R. 52, nr 3

762--768

EN

This paper presents results of an investigation focusing on the effect of high acidity fuel (high TAN) on the properties of lubricating oil. The capability of the upgraded lubricating oil (increased TBN) to withstand an operation of the engine when fuelled with animal fat was checked. Two lubricating oils were compared. A thermogravimetric method is proposed for characterisation of deposits formed in the lubricating oil centrifuge.

2

Possible application of animal fat as engine fuel - lubricity aspects

Piaszyk J., Wyszyński M. L.

Silniki Spalinowe

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2011

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R. 50, nr 4

35-42

EN

The paper presents results of animal fat lubricity test performed at high frequency reciprocating rig (HFRR). Impact of test temperature on wear scar diameter (WSD) is shown. Results for animal fat are compared with those for mineral diesel fuel (ULSD). Obtained WSD proved excellent lubricating properties of animal fat. Laboratory test results are backed up with engine trials where two sets of fuel pumps were tested on a large reciprocating engine. Animal fat can be used as fuel for engines when appropriate filtration process is implemented.

PL

W artykule zaprezentowano wyniki badań smarności przeprowadzonych z użyciem aparatu o ruchu posuwisto-zwrotnym wysokiej częstotliwości (HFRR). Przedstawiono wpływ temperatury paliwa na średnicę śladu zużycia (WSD). Wyniki otrzymane dla tłuszczu zwierzęcego porównano z wynikami dla oleju napędowego. Zmierzone średnice śladu zużycia potwierdzają dobre właściwości smarne tłuszczu zwierzęcego. Wyniki testów laboratoryjnych potwierdzono testami silnikowymi, w których dwa zestawy pomp wtryskowych przetestowano na dużym silniku wysokoprężnym. Tłuszcze zwierzęce mogą być stosowane jako paliwa silnikowe pod warunkiem przeprowadzenia odpowiedniego procesu filtracji.

3

Acidity of Tallow (Animal Fat) and Its Effect on Suitability of Tallow as Fuel in Electricity Generating Engines

Piaszyk J., Wyszynski M. L., Tsolakis A.

Archivum Combustionis

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2010

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Vol. 30 nr 4

471-480

EN

The paper outlines properties of tallow to be used as fuel, its production process and annual variation of the measured parameters – density, acidity, impurities, calorific value etc. Most of the parameters are constant throughout the year, except acidity. Acidity is high during the summer and low in winter – this is consistent with environmental temperature changes. High levels of free fatty acids are consistent with the perceived low quality of fat and are also responsible for the unpleasant bitter taste of rancid fat. Admissible acidity levels of fuel for the four- and two-stroke heavy fuel oil (HFO) engines indicate that in winter the two stroke engine may be used, but in the summer acidity levels are generally too high. Possible industrial methods of acidity reduction are briefly discussed.