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Kinematic and dynamic modeling and simulation of crank mechanism of automobile engine

The study aims to conduct the kinematic and dynamic simulation of the four stroke engine in MATLAB software. A method of modeling which allows calculating the dynamics and kinematics of crank mechanism of automobile engine has been developed. Typical dynamic and kinematic performance characteristics of 4-cylinders engine are shown. | Nguyễn Khắc Tuân và Đtg Tạp chí KHOA HỌC & CÔNG NGHỆ 139(09): 19 - 24 KINEMATIC AND DYNAMIC MODELING AND SIMULATION OF CRANK MECHANISM OF AUTOMOBILE ENGINE Nguyen Khac Tuan*, Hoang Anh Tan, Nguyen Minh Chau College of Technology - TNU SUMMARY The study aims to conduct the kinematic and dynamic simulation of the four stroke engine in MATLAB software. A method of modeling which allows calculating the dynamics and kinematics of crank mechanism of automobile engine has been developed. Typical dynamic and kinematic performance characteristics of 4-cylinders engine are shown. Key words: kinematics, dynamics, crank mechanism, simulation INTRODUCTION* The principle behind an internal combustion engine (ICE) is that air and fuel are mixed and burnt inside the cylinder to generate work. The combustion pushes the piston, which transfer the translational movement through the connecting rod, to a rotational movement on the crank shaft. During each cycle, the piston moves continuously back and forth between its top and bottom positions, commonly known as the Top Dead Center (TDC) and the Bottom Dead Center (BDC), respectively. Kinematic analysis is important to understand the position, velocity and acceleration of each linkage during the working of mechanism. The essentiality of dynamic analysis is to understand dynamic behavior of each link, during the working of mechanism. Analysis of the publications [7-15] showed that most of works focus on computational simulation and thermodynamic cycle [11, 12] or calculate the parameters of the engine with valve timing, valve-contour or contour gas distribution [13, 14]. Some other works using specialized software such as Adams, Saber, Scilab, GT-power. to simulate the entire engine [9,10] or crank mechanism [7,8]. Nonetheless, there is no a complete study of the kinetics and dynamics of the 4-stroke engine with different numbers of cylinder. In * Tel: 0912 262771, Email: tuannkcn@gmail.com the following discussion, we refer to