Type Synthesis of Variable Compression Ratio Engine Mechanisms

Applied Sciences

HoSung Park¹  YoungKwang Mo¹  MinSeok Jo¹  SeungWoo Kwak¹  JaeKyung Shim² 

[1] Department of Mechanical Engineering, Graduate School, Korea University, Seoul 02841, Korea;School of Mechanical Engineering, Korea University, Seoul 02841, Korea;

关键词: type synthesis of mechanisms;    variable compression ratio (VCR) engine mechanism;    kinematic structure;    graph theory;   

DOI  :  10.3390/app10186574

来源: DOAJ

【 摘 要 】

Type synthesis of two-degrees-of-freedom (DOF) planar mechanisms has been carried out using graph theory to determine the possible kinematic structures of variable compression ratio (VCR) engine mechanisms with two to three independent loops, and has resulted in the structures of 87 mechanisms satisfying search specification. By applying evaluation criteria to the enumerated mechanisms, the kinematic structures of three mechanisms are selected as suitable VCR engine mechanisms and verified by analysis results. In this research, VCR engine mechanisms with revolute joints and only one prismatic joint are enumerated, and the basic method to determine the VCR engine mechanisms with higher pairs is discussed. The procedure used in this research can be utilized to determine the kinematic structures of desired mechanisms and the results can be used as an atlas of two-DOF adjustable slider-crank mechanisms.

【 授权许可】

Unknown