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

Event: 2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting

Authors

Abstract

Content: 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.

Meta Tags

Topics: Internal combustion engines
Diesel / compression ignition engines
Crankcases
Pistons
Engines

Affiliated or Co-Author: Research Center for High Efficiency Hydrogen Engine and Engi
Tokyo City University
Tokai University

Details

Citation: Mihara, Y., Hirose, Y., Oikawa, M., Kyuu, S. et al., "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," SAE Int. J. Adv. & Curr. Prac. in Mobility 6(3):1719-1728, 2024, https://doi.org/10.4271/2023-32-0047.

Additional Details