Automobiles

자동차 EGR Cooler


· Client  : 국내 자동차 기업.

· Role     : 열효율 개선을 위한 내부 열교환부 설계 및 경량화/
                 부품 일체화를 위한 부착 브라켓 최적 설계 지원.

[ Previous Heat Exchanger Shape  ] 

two-dimensional fluid flow     

Harvestance researched and developed 

with the goal of increasing the heat exchange efficiency 

of the existing EGR cooler and consolidating parts. 

1. Applying TPMS Structure


<What is TPMS?>

Triply Periodic Minimal Surface, 

Freely adjust the density and surface area of the channel by adjusting the cell size and thickness of the unit.


Applied TPMS structure using nTop-Platform and

Based on the results of heat flow analysis, We were able to freely adjust the cell size, thickness, and density of TPMS structure in a short time.



By utilizing TPMS structure as a flow path, the flow of fluid was expanded to three dimensions,

 increased the heat transfer area by 70% and reduced the boiling area by 20%

2. Consolidating Part

· To reduce brazing/welding processes for multiple parts and to avoid defects during the process, 

   9 parts are consolidated by applying Design for Additive Manufacturing (DfAM). 


· The internal heat exchanger was manufactured without SUPPORT by utilizing TPMS structure.


3. 3D Printing


 · 50% lightweight of BRACKET , 17% lightweight overall, and improved fuel efficiency.


· 15% increase in thermal efficiency


· 9 Parts Consolidation


· 20% reduction in boiling area


· 74% increase in heat exchange area 

3D Printing Application

Summary


Original Model

Applying TPMS structure + Part Consolidation + 3D Printing



SUS 316

SUS 316



-

17% Lightweight



9 Parts

1 Part

개요


원본모델

SUS 316 


-


9개의 부품 

TPMS 구조 적용 + 부품 일체화 

+ 3D 프린팅 적용 


SUS 316


17% 경량화


1개의 부품