Results 131 to 140 of about 1,268 (175)
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AFM Investigation of Steels Surfaces Worn in HFRR Tests
Materials Science Forum, 2007Radical reduction of sulphur content in diesel fuel from the mid 90’s had disastrous impact on diesel fuel’s lubricity. Due to the desulphurization process the lubricity of diesel fuel dropped significantly and got crucial nowadays. The lubricity performance of the diesel fuel is evaluated by the HFRR test in Europe.
D. Aranyi +3 more
exaly +2 more sources
Tribological Assessment of Marine Distillate Fuels under a Variant HFRR Method
Tribologie Und Schmierungstechnik, 2022Maritime transport has a vital role in world economy. Its efficiency depends on the effective trade, transport facilitation, low cost of customs and the integration of new technologies for sustainable operation. However, the con-temporary demands have turned shipping industry into an emerging air pollutant with significant share to the global climate ...
Theodora Tyrovola, Fanourios Zannikos
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Estimation of argon activation in HFRR pool water and primary coolant system
Life Cycle Reliability and Safety Engineering, 2017Ar-41 being hard gamma emitter is one of the key radio-nuclide for operational and radiological safety during the normal operation of pool type research reactor. This paper discusses the estimation of Ar-41 activity in pool water and primary coolant system of 30 MW HFRR open pool type reactor.
Manoj Kumar Hansda +3 more
exaly +2 more sources
Lubricity of ethanol–diesel blends – Study with the HFRR method
Fuel, 2017Abstract Due to increasing fuel consumption in various industries, especially in road transport, interest in increasing the market participation of renewable fuels is growing. One such fuel is ethanol. The raw materials for its production include sugar beets, sugar cane, potatoes and many other starch-containing plants.
Hubert Kuszewski +2 more
exaly +2 more sources
HFRR Studies on Methyl Esters of Nonedible Vegetable Oils
Energy & Fuels, 2006The article describes the systematic studies on the lubrication properties of biodiesel, low sulfur diesel fuel, and their blends. Biodiesel from nonedible oils ( e. g., Jatropha curcas, Pongamia glabra, Madhuca indica, and Salvadora oleoides) were prepared by base-catalyzed transesterification using methanol; high-speed diesel (HSD) used was from ...
A. K. Bhatnagar +3 more
exaly +2 more sources
HFRR lubricity response of an additized aviation kerosene for use in CI engines
Tribology International, 2002Abstract To reduce their fuel related logistic burden, NATO Armed Forces are advancing the use of a single fuel for both aircraft and ground equipment. To this end, F-34 is replacing distillate diesel fuel in many applications. However, tests conducted with kerosene on High Frequency Reciprocating Rig, showed that it causes unacceptable wear due to ...
Fanourios Zannikos, Stamatios Kalligeros
exaly +2 more sources
A Comparison of Modified Elevated Temperature HFRR Test Data With Scuffing BOCLE Results
SAE Technical Paper Series, 1996<div class="htmlview paragraph">Evolving diesel engine design trends are expected to include fuel systems operating at significantly higher pressures and temperatures than in the past. Accordingly, meaningful laboratory tests are needed to help guide this development. Two candidate test methods were evaluated in this exploratory study.
N. C. Blizard, P. A. Bennett
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Thermal-Hydraulic Transient Analyses for Primary Coolant System of HFRR Using RELAP5
Nuclear Technology, 2023Samiran Sengupta
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Tribochemistry of mono molecular additive films on metal surfaces, investigated by XPS and HFRR
Tribology and Interface Engineering Series, 2005In order to see how oxygen and nitrogen containing substances influence the wear relating behaviour of diesel fuels various hydroxychinolines were investigated by means of a high frequency reciprocating rig (HFRR) tribome-ter. Attention was especially given to the connection between the position of the hydroxyl group at the molecule and the resulting ...
exaly +2 more sources
Evaluation of Hydrous Ethanol Fuel Lubricity by HFRR
SAE Technical Paper Series, 2016<div class="section abstract"><div class="htmlview paragraph">Improvement of thermal efficiency is an important problem for internal combustion engines. Fuel reforming with dehydrogenation reaction by exhaust heat is one of the measures to increase thermal efficiency using hydrogen mixed SI combustion.
Mitsuharu Oguma +3 more
openaire +1 more source