Analysis and Optimum Structure of Deformation Coordination of Crankshaft-Bearing System

Abstract:

Aiming at realizing the coordination deformation of crankshaft-bearing system for engine, the equation of coordination deformation for crankshaft-bearing system was derived based on the theory of elasticity. According to the hydrodynamic lubrication theory, the mathematical model was established to analyze the bearing characteristics; the displacement of each bearing in the vertical direction was calculated by combined solution of the two parts above. The sum of squared differences of displacements was evaluated as evaluation standard of coordination deformation for crankshaft-bearing system. Then bearing clearances were chosen as optimized variables of crankshaft coordination deformation for the optimization. The crankshaft-bearing system of one type of engine was optimized for the coordination deformation. The results indicate that the optimization scheme of crankshaft-bearing system can make a significant improvement to coordination deformation and provide reference for the design of the engine.

• Periodical: Applied Mechanics and Materials (Volume 868)
• Pages: 224-229
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.868.224
• Online since: July 2017
• Authors: Xiao Mei You, Xiao Tian Shi*, Xing Guo Ma, Guo Ying Chai, Gui Chun Yang
• Keywords: Coordinative Deformation, Crankshaft, Main Bearing

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