Focusing on the issue of oil coking at the outlet of the compressor during the operation of a turborcharged diesel engine,a simulation test is conducted on a metal sheet coking bench using diesel engine oils of specifications CD 15W-40 and CI-4 15W-40 as the research objects.The high-temperature coking law of engine oil at different temperatures is studied,and the coking products are analyzed by microscopic infrared spectroscopy.The results indicate that temperature affects the high-temperature coking process of the oils,and there is a peak in the mass of coking products when the temperature changes.Moreover,the composition of the oil coking products differs at different temperatures,with a higher temperature leading to a greater degree of oxidation in the coking products.
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