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송영태(Youngtae Song),장병무(Byeongmoo Jang),최재식(Jaesik Choi),신기영(Geeyoung Shin),연동원(Dongwon Yeon),오석준(Seokjun Oh),김종수,변상철(Sangchul Byon) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
As we develop a platform for electric vehicles, slim cockpits, swivel seats, and flat floors are required to expand indoor space. In order to cope with this, a new type of HVAC concept needs to be reviewed. In this paper, the HVAC mounting location and structure were optimized for cockpit slimming. In order to secure an indoor space, the concept of moving the blower unit and the heater & evap unit of HVAC mounted indoors to the PE room has been implemented. The HVAC in the PE room was optimized considering the layout with the surrounding parts, and the performance was verified through the HVAC internal flow analysis and system bench experiment. Based on the results, the PE room HVAC concept can be applied to electric vehicle platforms in the future to commonize platforms and secure indoor space.
김명회(Myunghoe Kim),구중삼,오광헌(Kwanghun Oh),장병무(Byeongmoo Jang),배종식(Jongsik Bae),Junmo Ku 한국자동차공학회 2015 한국자동차공학회 부문종합 학술대회 Vol.2015 No.5
Recently Car-maker has improved efficiency of engine because customers prefer car with increased fuel efficiency For this reason, PTC heater has been applied with diesel engine since past 10 year for heating performance. Furthermore heat source continually reduced in Gasoline engine because of improvement of gasoline engine efficiency. So PTC heater is also applied to Gasoline engine. Recently trend is to increase using of PTC heater. Like this PTC heater of auxiliary heater has been transformed into the main heater. But PTC heater has increasing HVAC package. Also, PTC heater has increasing temperature distribution and decreasing heating performance because cold air is bypassed. This paper is about studying hybrid PTC heater that is improved about disadvantages of PTC heater. Hybrid PTC heater is composed of an efficiently combination of thin PTC heater with coolant heater core. This paper presents experimental results of heating performance test at vehicle level. As a result, Hybrid PTC heater could improve interior temperature of vehicle about 0.9℃~3℃