A Study on Bending and Torsion Characteristics and Weight Optimization by Web Shape of Crankshaft for Diesel Engine

디젤 엔진의 Crankshaft Web 형상에 따른 굽힘 및 비틀림 특성과 중량 최적화에 관한 연구

Recently, it is possible for small sized and high speed diesel engines by development of commonrail system. And in order to increase the engine performance, the cylinder firing pressure is a tendency which increases. On the other side, the weight of engine becomes lightly in spit of high performance diesel engine. Therefore, the weight optimization for engine components is very important point on the design process. Also, the weight optimization must necessarily be considered the robust design against a fatigue failure. This paper focuses on the weight optimization of crankshaft according to web shape at the light duty diesel engine, and torsion characteristics of crankshaft is considered with 1D and 3D analysis tools.