SYMPOSIA PAPER Published: 01 December 2022
STP163420200113

Use of a High-Frequency Reciprocating Rig as a Condition Monitoring Tool to Measure Lubricity

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The term “lubricity” is used to assess a fuel's ability to reduce the friction between contact surfaces under applied loads. Furthermore, the reduction of sulfur (a natural lubricating agent) in diesel fuel oil by the U.S. Environmental Protection Agency makes it necessary to treat these fuels with lubricity enhancement agents and to monitor their effect. Without these additives, fuels would induce wear on a wide range of moving parts in the fuel injection system (pumps, injectors, etc.). As a result, it is important to quantify the lubricating properties of fuels and to monitor the effects of blend stocks and additives on fuels. Due to the compositional changes of fuels and the need to introduce lubricity improvement agents into fuels, ASTM D6079 has proven to be a robust and reliable test method to measure and monitor the lubricity of diesel fuel. This paper discusses ASTM D6079 and the lubricity requirements per ASTM D975. This paper also investigates recent advancements made involving HFRR instrumentation when used as a lubricity condition monitoring tool and evaluates the accuracy of these instruments through testing with standardized reference fluids.

Author Information

Shah, Raj
Koehler Instrument Company, Inc., Holtsville, NY, US
Colantuoni, Vincent
Koehler Instrument Company, Inc., Holtsville, NY, US
Huq, Nabill
Stony Brook University, Stony Brook, NY, US
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Pages: 377–386
DOI: 10.1520/STP163420200113
ISBN-EB: 978-0-8031-7715-4
ISBN-13: 978-0-8031-7714-7