한국해양대학교

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나노구리合金潤滑劑가 엔진潤滑特性에 미치는 影響

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dc.contributor.author 鄭錫旻著 -
dc.date.accessioned 2017-02-22T05:55:14Z -
dc.date.available 2017-02-22T05:55:14Z -
dc.date.issued 2003 -
dc.date.submitted 56797-10-27 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002173813 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/8802 -
dc.description.abstract The characteristic of a lubricant is important under severe running condition. Especially on diesel engines the better lubrication performance is required due to the extreme condition such as high temperature and pressure by combustion process in a combustion chamber. Many research works for improving a boundary lubrication performance have been studied by using solid lubricants, and have been tried to apply solid lubricants to an engine. However those general lubricants like MoS2 or PTFE have not been applied on engines due to the extreme conditions such as very high temperature and pressure by combustion process in a cylinder. Recently, the solid lubricant containing a copper nickel alloy has been introduced and studied. In this thesis the lubricant containing the alloy particles is applied on a high speed rolling contact wear test machine and a diesel engine. The lubricant is assessed by mechanical characteristic test and by engine performance test. The results by mechanical characteristic test show the decrease of the coefficient of friction and oil temperature. The results by engine test show the decrease of X-axis and Y-axis amplitude which strongly effect on engine vibration and the decrease of torque related strongly to the engine efficiency as well as the improvement of the engine lubrication performance. It is clear that the lubricant containing the copper nickel alloy nano-powder decreases friction and wear, and it is also expected the increase of the sealing effect between a cylinder and piston rings. -
dc.description.tableofcontents 목차 ABSTRACT = i 1. 서론 1.1 연구의 배경 및 목적 = 1 2. 윤활유 및 첨가제 2.1 기관의 윤활 = 4 2.1.1 윤활영역의 종류 = 4 2.1.2 윤활작용 = 6 2.1.3 윤활유의 물리·화학적 성질 = 8 2.2 기관의 윤활제 = 9 2.2.1 엔진오일의 역할 = 10 2.2.2 엔진유의 요구성능 = 15 2.2.3 엔진유의 분류기준 = 18 2.3 기관윤활유 첨가제 = 19 2.3.1 첨가제의 종류 = 20 2.3.2 대표적인 첨가제의 특성 = 21 2.3.3 고체윤활제 = 25 2.4 나노구리합금윤활제 = 28 3. 실험장비 및 실험조건 3.1 고속마찰마모시험기 = 30 3.1.1 실험장치 = 30 3.1.2 실험조건 및 실험방법 = 33 3.2 모터구동 디젤기관 = 33 3.2.1 실험장치 = 33 3.2.2 구동장치 = 35 3.2.2 계측장치 = 35 3.2.3 실험조건 및 실험방법 = 40 4. 실험결과 및 고찰 4.1 일반적인 특성 고찰 = 41 4.1.1 마찰특성 = 41 4.1.2 시편마모특성 = 50 4..2 기관진동특성 고찰 = 54 4.3 기관윤활특성 고찰 = 67 4.3.1 과도상태윤활특성 = 67 4.3.2 정상상태의 윤활특성 = 68 5. 결론 = 71 참고문헌 = 72 -
dc.publisher 한국해양대학교 대학원 -
dc.title 나노구리合金潤滑劑가 엔진潤滑特性에 미치는 影響 -
dc.title.alternative The Effect of Lubricant Containing Copper Alloy Nano-Powder on Engine Lubrication -
dc.type Thesis -
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기계공학과 > Thesis
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