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논문 기본 정보

자료유형
학술대회자료
저자정보
김종현 (HL Mando) 지영춘 (HL Mando)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2024년 한국자동차공학회 추계학술대회 및 전시회
발행연도
2024.11
수록면
318 - 326 (9page)

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초록· 키워드

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Automotive Shock-absorbers have an essential role in ensuring driving comfort and stability. Especially, in the case of SUV, the height of the rear is often lowered when fully loaded in the back, which further highlights the importance of Shockabsorbers. Self-Levelizer Damper(SLD) was developed to deal with this issue, so it’s main function is to adjust vehicle’s height as desired level by mechanical vibration energy generated when vehicle moves without any additional power. It has the advantage of being more simple and economical compared to air suspension. However, SLD often shows a limited height adjustable function when it doesn’t provide sufficient pumping performance in an actual vehicle driving environment. Pumping performance test that evaluate the performance of adjusting vehicle level is one of an important test item of SLD. SLD can maintain the final vehicle level by pumping, depending on the weight of the load while driving on the road. If there is a measuring method which could evaluate final vehicle level, it could be useful when design engineer develops SLD.
In this study, we were willing to propose a new approach to evaluate the actual vehicle equivalent pumping performance of SLD. In order to analyze and supplement the limitation of existing test method, the actual vehicle measurement data was analyzed to review the feasibility and improvement of the existing evaluation method. In addition, we constructed CAE model that integrated SLD fluid model and 2-DOF Quarter car(Q-car) model by using 1-dimensional Simscape modeling which could describe pumping leveling performance. With this CAE model, we suggested a new evaluation method that reflects vehicle vibration characteristics in response to road input. Finally, this evaluation method was verified through testing using Real Time Target Machine. Also, test data and pumping mechanism were examined.

목차

Abstract
1. 서론
2. 기존 SLD 펌핑 성능 평가법의 한계
3. 실차 계측을 통한 펌핑 현상 분석
4. 펌핑 성능 구현 유체 해석모델 수립
5. 해석모델 활용한 펌핑성능 시험법 고찰
6. 시험 검증 결과
7. 결론
References

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