10 Kinematics and Kinetic Analysis of the Slider-Crank Mechanism in Otto Linear Four Cylinder Samand Engine

Samand is one of the numerous vehicles in Iran. Also this vehicle is national vehicle of Iran. According to these it is necessary doing a complete research about slider-crank mechanism because of high expensive repair and replacement of these parts and their effect on the other parts like cylinder block and piston. In this regard, this paper presents the cinematic and kinetic analyses of the crank mechanism. Besides crank mechanism cinematic analysis, kinetic analysis of the connecting rod was done with regard to the forces resulting from ignition pressure, mass distribution in the crank mechanism as well as inertia forces (reciprocating forces and rotational masses). At the end, the graphs of displacement, speed and acceleration of piston, and also the graphs of ignition pressure, forces on piston, forces on connecting rod and forces on bears in one complete cycle according to the crank angle were drown by MSC/ADAMS/ Engine software.