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ASTM D7593-14

Заменен
Standard Test Method for Determination of Fuel Dilution for In-Service Engine Oils by Gas Chromatography — 9 стр.
Значение и использование

5.1 Some fuel dilution of in-service engine oil is normal under typical operating conditions. However, excessive fuel dilution can lead to decreased performance, premature wear, or sudden engine failure. This test method provides a means of quantifying the level of fuel dilution, allowing the user to take necessary action. This test method does not purport to accurately quantify the specific fuel present in the in-service lubricant samples due to limitations associated with the aging and degradation of the fuel in the crankcase. Rather, quantification of diesel fuel is normalized using a simulated aged fuel.

Область применения

1.1 This test method covers the determination of fuel dilution for in-service engine oil by gas chromatography.

1.2 Analysis can be performed directly by this test method without pretreatment or dilution of the sample.

1.3 There is no limitation for the determination of the dilution range, provided the amount of sample is within the linear range of the gas chromatograph detector. However, sample dilution can add potential error to the result and may affect the precision obtained as compared to the values presented in Section 14, which were obtained with no dilution.

1.4 This test method covers a quantitation range up to 10 % (m/m) for diesel and biodiesel, and up to 5 % (m/m) for gasoline.

1.5 The values stated in SI units are to be regarded as standard. Where non-SI units are provided, they are shown in parentheses.

1.6 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.

ICS
75.160.20 Liquid. Including gasoline, diesel, kerosene, etc. / Жидкое топливо
75.100 Lubricants,. Including mineral oils, fluids for metal working and for temporary protection against corrosion / Смазки, индустриальные масла и связанные с ними продукты. Включая минеральные масла, жидкости для обработки металлов и для временной защиты от коррозии
Сборник ASTM
05.04 Petroleum Products, Liquid Fuels, and Lubricants (IV): D6973–D7755 / Нефтепродукты, жидкое топливо и смазочные материалы (IV): D6973–D7755
Тематика
Petroleum