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자료유형
학술대회자료
저자정보
김한구 (홍익대학교) 김태환 (홍익대학교) 김청균 (홍익대학교)
저널정보
한국트라이볼로지학회 한국트라이볼로지학회 학술대회 한국윤활학회 2006년도 제42회 춘계학술대회
발행연도
2006.6
수록면
248 - 253 (6page)

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An experimental study was conducted to evaluate the viscosity characteristics of multi-grade engine oils in which contains diesel fuels as functions of temperature variations. In this study, a diluted test sample for engine oils was made to have 5%, 10% and 15% fuel contents in unused engine oils, SAE 5W40, 10W40 and 15W40. The engine oil viscosity was measured with temperature variation ranging from -20℃ to 120℃ using a viscometer. The diesel fuel in which is blended to an engine oil plays an important role for decreasing an engine oil viscosity. Test results show that the viscosity tends to fall from a low temperature to a high one when a fuel mixed with engine oils. The viscosity variation in a low temperature zone is radically decrease compared with a high temperature zone. An equation that can predict the viscosity with the fuel dilution, based on the empirical result was expressed in the exponential function with the variation of the temperature was shown. The 5W40 engine oil showing low viscosity characteristic in the low temperature region matches close with the theoretical equation and the experimental result. The 15W40 engine oil showing high viscosity characteristic in the low temperature region however shows little difference with the theoretical equation and the experimental result. With the theoretical equation, it is possible to predict the limitation of the fuel dilution which doesn't affect as the influence of the engine elements at the concept design stage of the CDPF development system.

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ABSTRACT
1. 서론
2. 실험장치 및 방법
3. 실험결과 및 고찰
4. 결론
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