Development of Air Curtain System to Improve HVAC Performance and EV Range for Next Generation Mobility

Shunsuke Shigeta･Yoshihisa Shimada･Takayuki Shimauchi (Toyota Motor)

In the context of the need for technological innovation for CASE, the decrease in EV range due to heating is one of the main issues affecting the utility of mobility. The rapid ventilation of the cabin air caused by opening the door for passengers at bus stops has a significant impact on thermal comfort and EV range, especially in the case of mobility used as shuttle buses. We have focused on this phenomenon and developed an air curtain system to solve the problem.

Development of Thin Air Conditioning Register by Airflow Diffusion Suppression Technology

Jun Yamaoka･Masaharu Sakai･Kaori Seki･Takahisa Fujii (DENSO)

In recent years, it has been required to reduce the thickness of the air conditioning register by reducing the thickness of the instrument panel for expanding the cabin space and the field of view, and by increasing the size of the display. The thinning of the outlet reduces the accessibility of air conditioning air due to air flow diffusion. This time, we verified the air flow diffusion mechanism by visualization experiment, etc. and developed and mass-produced the air flow diffusion suppression technology by the side flow.

Development of a Tool to Calculate Ventilation Volume for Minimizing Heating Power Consumption in XEVs and its Quantification
-Considerations for Ventilation Volume Adjustment Methods-

Masato Kurihara･Yuzuru Yoshinami･Koichi Yamagata･Munehiko Oshima･Masayoshi Tajiri･Shunichi Ishikawa (Nissan Motor)

In order to increase the all-electric range of BEVs, energy-saving air conditioning is required. One of the energy-saving methods is to keep warm air in the cabin (internal air circulation), but there is an upper limit to the ventilation volume control in order to guarantee anti-fog performance.
This time, we developed a physics model to calculate the minimum ventilation volume keeping anti-fog performance, and quantified the effect of ventilation volume control.

Development of Seat Heater Performance Prediction using Heat Transfer Model

Yasuhiro Ono･Ibuki Adachi (Toyota Boshoku)

In the development of vehicle seat heater performance, we are changing the method of determining performance using actual product to method of creating design concept using MBD to analyze heat transfer phenomena. The analysis uses 1D CAE, making it easy to understand the phenomenon and to confirm the influence of the components and the environment and to make measures for it. Using this method, we examined and considered the factors that affect performance.