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Standard Test Method for Evaluating Diesel Fuel Lubricity by an Injection Pump Rig
STANDARD published on 10.3.2003
Designation standards: ASTM D6898-03
Note: WITHDRAWN
Publication date standards: 10.3.2003
SKU: NS-36931
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
boundary lubrication, diesel fuel, friction, lubricity, wear, ICS Number Code 75.160.20 (Liquid fuels)
Significance and Use | ||||||||||||||
Diesel fuel injection equipment has some reliance on lubricating properties of the diesel fuel. Shortened life of engine components, such as diesel fuel injection pumps and injectors, has sometimes been ascribed to lack of lubricity in a diesel fuel. Pump Lubricity Value (PLV) test results generally rank fuel effects on diesel injection system pump component distress due to wear in the same order as Bosch, Lucas, Stanadyne, and Cummins in-house rig tests.7 In these fuel/hardware tests, boundary lubrication is believed to be a factor in the operation of the component. The PLV is sensitive to contamination of the fluids and test materials and the temperature of the test. Lubricity evaluations are also sensitive to trace contaminants acquired during test fuel sampling and storage. Test Methods D 6078 and D 6079 are two methods for evaluating diesel fuel lubricity. No absolute correlation has been developed between these two test methods, or between either of these methods and the PLV. The PLV may be used to evaluate the relative effectiveness of a fluid for preventing wear under the prescribed test conditions. This test method is designed to evaluate boundary lubrication properties. While viscosity effects on lubricity are not totally eliminated, they are minimized. This test can indicate whether or not an additive will improve the lubricity of a poor lubricity fuel. |
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1. Scope | ||||||||||||||
1.1 This test method covers evaluating the lubricity of diesel fuels using a pump rig test and Stanadyne Model DB4427-4782 pumps. Note 1Other pumps may be used if a correlation between pump performance factors and fuel lubricity has been developed. 1.2 This test method is applicable to any fuel used in diesel engines, including those which may contain a lubricity enhancing additive. 1.3 The values stated in SI units are to be regarded as standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 7. |
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2. Referenced Documents | ||||||||||||||
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