GB/T 9171-1988
ActiveEngine oil--Determination of borderline pumping temperature
发动机油边界泵送温度测定法
Application Summary AI generated
This standard specifies a laboratory test method for determining the lowest temperature at which an engine oil can be continuously pumped to provide adequate lubrication. It is applied in the petroleum industry for quality control and formulation development of engine oils, particularly for evaluating cold-start performance in automotive and heavy-duty diesel engines. The test ensures that the oil maintains sufficient fluidity under low-temperature conditions to prevent engine damage during startup.
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GB/T 7631.15-1998
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