Browse Publications Technical Papers 2023-32-0047
2023-09-29

Clarification of Fuel and Oil Flow Behavior Around the Piston Rings of Internal Combustion Engines: Analysis and Observation of Lubricating Oil Dilution by Post Injection of Diesel Engine Using Oil Sampling and Photochromism Method 2023-32-0047

The mechanism of lubricant dilution by post injection fuel in a diesel engine was investigated. The operating conditions of the engine were changed, and oil was sampled from each part of the piston and the crankcase, and the dilution ratio was analyzed. Also, photochromism was used to visualize the oil and fuel flow. Dilution ratios obtained from oil sampling and photochromism showed the same tendency.

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