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자료유형
학술대회자료
저자정보
신윤섭 (자동차부품연구원) 박상훈 (자동차부품연구원) 이경우 (태일산업) 손출배 (한국정밀)
저널정보
한국자동차공학회 한국자동차공학회 춘계학술대회 2018 한국자동차공학회 춘계학술대회
발행연도
2018.6
수록면
143 - 147 (5page)

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Currently, the automobile industry prefers high fuel consumption vehicles due to depletion of petroleum resources. In order to cope with increasing exhaust gas regulations, it is required to improve or develop various technologies such as supercharger application, light weight of vehicles, installation of aftertreatment device, downsizing of engine, And the like. Recently, gasoline vehicles have been adopting a CVVT (Continuously Variable Valve Timing) system that freely adjusts valve opening and closing times and periods according to the rotation range of the engine. The CVVT optimizes the valve timing in all operating ranges to improve output and torque and adjust valve overlap to reduce NOx and HC emissions, which are hazardous emissions, using internal EGR.
Since the CVVT system is operated by oil, a device that can control the oil is needed. Its component is the oil control valve (OCV). The OCV adjusts the valve overlap by adjusting the opening and closing timing and duration of the valve by sending and exhausting engine oil to the crankcase and advance chamber of the CVVT system.
In this paper, to evaluate the characteristics of OCV (Oil Control Valve), which is a core part of CVVT system, the response test and the stability test of valve according to the temperature and viscosity of engine oil were carried out in motoring engine condition.
Test results show that the valve response is lower when the oil temperature is lower than when the temperature is higher. The lower the viscosity of the engine oil at lower temperatures, the better the response.

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Abstract
1. 서론
2. OCV 제어성능 평가
3. 결론
References

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