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차량 공조시스템 공력소음의 단품 특성에 대한 실험적 연구
제종두(Jongdoo Je),박정영(Jeongyoung Park),안병재(Byungjae Ahn),김진민(Jinmin Kim),김재원(Jaewon Kim) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In the present study, noise levels of the components (blower, heater unit, duct) and combinations of the components are measured to investigate the characteristics of HVAC noise and to understand the contribution of the components to overall HVAC noise. In addition, noise levels of a HVAC system equipped with different ducts are compared with those of the original HVAC system to investigate the effects of the geometry of ducts on the noise<br/> level of HVAC system. Test results show that noise level increases in the following order: HV (HD) < V (D) < BH ~ BHV (BHD) < B (B, H, V, D denote for blower, heater unit, vent duct, defrost duct, respectively). The effects of windshield glass on the noise level in the case of defrost mode are very large and the effects of the geometry of ducts on the overall HVAC noise prove to be not small.