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Investigation of Compressor Deposit in Turbocharger for Gasoline Engines (Part 1: Research on Deposit Formation Mechanism)
Technical Paper
2023-01-0410
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Contribution to carbon neutrality is one of the most important challenges for the automotive industry. As CO2 emission has been reduced through electrification such as hybrid electric vehicle (HEV) and plug-in hybrid electric vehicle (PHEV), internal combustion engines (ICEs) equipped in those powertrain systems are still necessary for the foreseeable future, and continuous efforts to improve fuel efficiency are demanded.
To improve powertrain thermal efficiency, direct-injection turbocharged gasoline engines have been widely utilized in recent years. Super lean-burn combustion engine has been researched as a next generation of turbocharged gasoline engines. Further utilization of turbochargers is expected. Compared with turbocharged downsized gasoline engines available in the current market, much higher boost pressure must be utilized to realize the super lean-burn engines. As a result, compressor housing temperature will be very high compared with the current market one. Blow-by gas containing engine oil mist is always recirculated into intake air upstream of the turbocharger compressor in the boosting operation. Therefore, the possibility of deposit formation derived from the engine oil mist is increased.
It is very important to inhibit the deposit formation for the realization of more efficient turbocharged gasoline engines and the reduction of vehicle CO2 emission. In this research, it is expected that solutions to inhibit the deposit formation will be found by clarification of the condition and the mechanism of this deposit formation in the turbocharged gasoline engines.
Authors
Citation
Ishizaki, N., Hirano, S., Kuma, H., and Ura, H., "Investigation of Compressor Deposit in Turbocharger for Gasoline Engines (Part 1: Research on Deposit Formation Mechanism)," SAE Technical Paper 2023-01-0410, 2023, https://doi.org/10.4271/2023-01-0410.Also In
References
- Sumi , N. , Hirano , S. , Fujimoto , K. , Nakajima , T. et al. Influence of Engine Oil Properties on Soot Containing Deposit Formation in Turbocharger Compressor SAE Technical Paper 2013-01-2500 2013 10.4271/2013-01-2500
- Galliard , I. and Lillywhite , J. Field Trial to Investigate the Effect of Fuel Composition and Fuel-Lubricant Interaction on Sludge Formation in Gasoline Engines SAE Technical Paper 922218 1992 10.4271/922218
- Miyata , I. , Hirano , S. , Tanada , M. , and Fujimoto , K. Mechanism of Turbocharger Coking in Gasoline Engines SAE Technical Paper 2015-01-2029 2015 10.4271/2015-01-2029
- API Publication 1509 Engine Oil Licensing and Certification System 21st 2022
- Ura , H. , Kuma , H. , Hirano , S. , and Ishizaki , N. Investigation of Compressor Deposit in Turbocharger for Gasoline Engines (Part 2: Practical Application to Turbocharger) SAE Technical Paper 2023-01-0412 2023