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차량 선회 시 마찰 소음과 접지 압 특성 관계에 관한 연구
임종욱(JongWook Lim),서영욱(YoungWook Seo),김정훈(JungHoon Kim),오소민(SoMin Oh),송계주(KyeJoo Song),추권철(KwonChul Choo),성기득(KiDeug Sung) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
In this study, a quantitative evaluation and analysis method was presented to reduce friction noise generated during vehicle turning. for this purpose, Numerical analysis of theoretical modeling performed using matlab, The relationship between friction noise and dynamic footprint for major factors was verified by experimental methods. The control factor was reviewed to verify the multiple regression model after the tire was manufactured. It will be used for research on accelerated friction noise of electric vehicles in the future.
차량 가속 시 타이어 마찰 소음에 영향을 주는 타이어 설계 인자 기여도 분석
임종욱(JongWook Lim),고재현(JaeHyeon Ko),최영길(YoungKil Choi),나재봉(JaeBong Na),최우영(WooYoung Choi),장홍주(HongJu Jang),성기득(KiDeug Sung),김남균(NamGyun Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
The automobile market is changing from internal combustion engines to electric vehicles. Accordingly, the load of the vehicle increases due to the weight of the battery, and accelerates to a high torque at the time of departure. High torque and load affect the shear stress and grip interacting with the tyre block on the road surface. For this reason, in this study, tire friction noise emitted when a vehicle accelerates was studied. A method of obtaining the contribution of each tire structure factor contributing to tire friction noise using the Support Vector Regression was presented. The optimal specification result according to the noise result of the actual vehicle test and the contribution of the structural factor were compared and verified. In the future, noise reduction characteristics according to major factors will be studied, and actual vehicle test evaluation technology will be developed and used for electric vehicle acceleration noise research.
신창우(Changwoo Shin),임종욱(Jongwook Lim),이대흥(Daeheung Lee),임원식(Wonsik Lim),차석원(Sukwon Cha),박태식(Taesik Park),김석준(Seokjoon Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
Drivability is an important evaluation of vehicle performance and means subjective perception for dynamic performance of a vehicle in response to driver input. For the present, drivability evaluation is subjectively evaluated by professional test drivers. This paper proposed the method for quantification of drivability in Hybrid Electric Vehicles (HEV). Proposed quantitative evaluation method consisted of five evaluation indices. The indices for drivability evaluation were selected through references which are related to ride comfort and shift quality. Based on the proposed method, drivability of HEV was evaluated quantitatively under various operation conditions. The results of these evaluations were similar to that of subjective evaluations under the same conditions.