High power and high efficiency has been required in internal combustion engine. Accordingly, the thermal load deformation, thermal stress and temperature on piston become higher at newly developed engines. To investigate the cooling effect of piston, a few types of piston design is presented and finite element method is carried out to analysis the heat transfer and the thermal stress. The piston which has upwards shifted cooling gallery is also analyzed to investigate the thermal load effect of oil jet cooling.

Abstract
 1. 서론
 2. 열전달 해석
 3. 해석모델과 경계조건
 4. 해석 결과
 5. 결론
 참고문헌

• 천동준(벽성대학 자동차과) | Dong-Joon Chun 제1저자
• 지창헌(원광대학교 기계자동차공학부) | Chang-Hun Ji 교신저자