Analysis on Dynamic Characteristics of Internal Combustion Engine Crankshaft System

Abstract

Bases on the virtual prototyping technology, a CAX integrated analysis environment in the PC platform is built. By the CAX, a simulation model of crankshaft system of internal combustion engine is built .The model is then used to analyze the kinematics and dynamics characteristics of some type crankshaft system. Through comparing the data of simulation result with that of classic literature, the virtual prototyping technology model is testified to reasonable and accurate. Then the real-time boundary load is achieved when the crankshaft is considered as flexible to simulate. Further more a transient dynamic response analysis is done on the crankshaft, its stress and deformation in the work cycle is gotten, then its dangerous part is also achieved. The simulation result provides a theory reference and basis for the crankshaft optimum design.

Strength Analysis on Crankshaft Structure Parameters

“…The failure points generally exist at transition fillet on main journal and crank arm, oil hole and internal defects. And most of the existing researches are to find the maximum stress point, using different analytical methods to achieve the purposes of crank design and optimization [2][3][4][5]. For the structure parameters (main journal diameter and length, crank pin diameter and length, etc.…”

“…orthogonal experimental, which is orthogonal rows; q is orthogonal columns; t is the level number of each selected factor [6]. This experiment uses four factors and two-level orthogonal table L 8 (7) 2 .…”